Add owner-assisted account recovery

CHANGELOG.md

@@ -2,6 +2,98 @@
 
 # Changelog
 
+## v0.1.0-preview.18 — 2026-09-04
+
+- Add owner-assisted account recovery for a documented human-review path when
+  normal password, passkey, and recovery-code authentication is unavailable.
+  Issuance requires an active direct organization owner and returns a bounded,
+  single-use, 15-minute secret while persisting and auditing only its digest.
+- Invalidate the recovered member's existing password, passkeys, recovery
+  codes, sessions, ceremonies, and older recovery grants when the reviewed
+  enrollment is issued. Completion atomically installs one replacement
+  password, passkey, and recovery-code set without issuing a normal session.
+- Keep identity and organization-visible recovery audits in the same SQLite
+  transactions as their credential changes, and document the application
+  boundary for fresh passkey authorization, secret-fragment delivery, and
+  human evidence review.
+
+## v0.1.0-preview.17 — 2026-09-04
+
+- Add optimistic organization-membership suspension, reactivation, and
+  removal for fresh-authentication administration flows. The exact displayed
+  membership state is rechecked after acquiring the SQLite write lock, so a
+  concurrent or stale ceremony fails without changing access or writing an
+  audit event.
+- Keep membership lifecycle consequences transactional: suspension removes
+  team membership, removal also revokes direct bindings, reactivation does not
+  silently restore former teams, and every successful change appends its
+  organization-visible audit before commit.
+- Strengthen last-owner protection to require another active direct owner
+  whose platform account is also active. Existing storage adapters retain the
+  legacy interface; security-sensitive applications fail closed unless their
+  repository implements the optimistic lifecycle extension.
+
+## v0.1.0-preview.16 — 2026-09-03
+
+- Add bounded organization-member and direct user-role listings for
+  application-owned access administration pages. Direct listings deliberately
+  exclude team and narrower resource grants rather than flattening distinct
+  authority into one apparent role.
+- Add atomic direct-role replacement with exact expected-binding checks,
+  transactional access audit, active-member validation, and final active
+  direct-owner protection. SQLite serializes competing replacements so stale
+  administration fails with a stable conflict instead of partially applying.
+- Record the Gamertan administration dogfood boundary: applications authorize
+  the route and fresh passkey assertion, while Foundations owns the reusable
+  storage transaction and invariants.
+
+## v0.1.0-preview.15 — 2026-09-03
+
+- Permit applications to opt into an exact non-default HTTPS WebAuthn origin
+  port for `localhost` and reserved `.test` relying-party IDs. The configured
+  origin remains exact, production origins remain portless by default, and
+  malformed, default, non-canonical, zero, or out-of-range ports fail closed.
+- Record the Gamertan local-Caddy dogfood pressure that required this explicit
+  development boundary without weakening cross-origin ceremony rejection.
+
+## v0.1.0-preview.14 — 2026-09-03
+
+- Reject header-only, truncated, and structurally invalid PDF uploads in the
+  bounded media preparer. Accepted attachments now require a supported PDF
+  version, terminal EOF marker, numeric in-range `startxref`, and either a
+  traditional xref/trailer or xref-stream object at the declared offset.
+- Keep PDF handling storage-neutral and non-rendering: applications still own
+  authorization, reference tracking, attachment disposition, and lifecycle.
+
+## v0.1.0-preview.13 — 2026-09-03
+
+- Complete the password-plus-recovery-code flow with a short-lived restricted
+  grant bound into a replacement-passkey ceremony. Completion atomically
+  consumes the grant, stores the verified passkey, replaces every recovery
+  code, revokes any intervening sessions and ceremonies, and records both
+  audits without issuing a normal session.
+- Keep failed completion retryable until grant expiry: a duplicate credential
+  or other transaction failure rolls back grant consumption and recovery-code
+  replacement, while a mismatched WebAuthn binding consumes only the affected
+  ceremony.
+
+## v0.1.0-preview.12 — 2026-09-03
+
+- Add a root-local bootstrap transaction that creates the first passkey-only
+  application owner, non-personal organization, active membership, direct
+  owner binding, one-time enrollment digest, and secret-free audit records
+  atomically.
+- Fail closed and roll back the entire bootstrap when the application has not
+  seeded the configured owner role. The raw enrollment token is returned only
+  after commit and never enters repository state or audit records.
+
+## v0.1.0-preview.11 — 2026-09-03
+
+- Add expected-user completion for authenticated self-service passkey
+  enrollment. A mismatched ceremony is consumed and fails before credential
+  persistence, closing an authorization seam found while dogfooding Gamertan's
+  account security page.
+
 ## v0.1.0-preview.10 — 2026-09-03
 
 - Add atomic public-account registration with required canonical email,

README.md

@@ -17,7 +17,7 @@ router, handlers, HTML, authorization decisions, cache behavior, and
 deployment. Adopt one boundary at a time; Go compiles and links only the
 packages you import.
 
-> **Public preview:** `v0.1.0-preview.10`. APIs may change before a stable
+> **Public preview:** `v0.1.0-preview.18`. APIs may change before a stable
 > release. Linux is the maintained release platform.
 
 ## Why Web Foundations?
@@ -40,7 +40,8 @@ packages you import.
 | Users, credentials, permissions, and sessions | [`auth`](auth) + [`authhttp`](authhttp) |
 | Atomic password-plus-passkey registration | [`account`](account) |
 | Passkey login and sensitive-operation step-up | [`authwebauthn`](authwebauthn) |
-| Printable single-use recovery codes | [`authrecovery`](authrecovery) |
+| Atomic first-owner and organization setup | [`bootstrap`](bootstrap) |
+| Recovery codes and owner-assisted recovery | [`authrecovery`](authrecovery) |
 | Private SQLite persistence | [`authsqlite`](authsqlite) |
 | Bounded media and private local blobs | [`media`](media) + [`medialocal`](medialocal) |
 | Organizations, teams, and invitations | [`organizations`](organizations) |
@@ -56,14 +57,14 @@ owns—and, just as importantly, what remains application policy.
 Pin the preview in an application module:
 
 ```bash
-go get gamertan.com/web@v0.1.0-preview.10
+go get gamertan.com/web@v0.1.0-preview.18
 go mod verify
 ```
 
 An application may name the first package it intends to adopt:
 
 ```bash
-go get gamertan.com/web/requestmeta@v0.1.0-preview.10
+go get gamertan.com/web/requestmeta@v0.1.0-preview.18
 ```
 
 The version belongs to the `gamertan.com/web` module. See the
@@ -101,6 +102,9 @@ JSONL logging.
   request context without owning login routes or pages.
 - [`authwebauthn`](authwebauthn) provides discoverable passkey login,
   enrollment, operation-bound fresh approval, and bounded recovery.
+- [`authrecovery`](authrecovery) supports printable self-service recovery and
+  a separate owner-assisted flow that atomically replaces compromised account
+  credentials while writing both identity and organization-visible audits.
 - [`organizations`](organizations) and [`access`](access) keep platform
   operation separate from organization-data authority while supporting teams,
   invitations, scoped roles, and audited temporary access.

access/access.go

@@ -18,8 +18,11 @@ import (
 )
 
 var (
-	idPattern   = regexp.MustCompile(`^[A-Za-z0-9_-]{8,128}$`)
+	ErrLastOwner          = errors.New("access: the last active direct owner must be preserved")
-	namePattern = regexp.MustCompile(`^[a-z][a-z0-9._-]{1,127}$`)
+	ErrRoleChangeConflict = errors.New("access: role binding changed")
+	ErrRoleUnchanged      = errors.New("access: role is unchanged")
+	idPattern             = regexp.MustCompile(`^[A-Za-z0-9_-]{8,128}$`)
+	namePattern           = regexp.MustCompile(`^[a-z][a-z0-9._-]{1,127}$`)
 )
 
 type SubjectKind string
@@ -116,6 +119,8 @@ type Repository interface {
 	Grant(context.Context, Binding) error
 	Revoke(context.Context, string, string, time.Time) error
 	EffectiveBindings(context.Context, string, string) ([]Binding, error)
+	OrganizationUserBindings(context.Context, string, int) ([]Binding, error)
+	ReplaceOrganizationUserRole(context.Context, []string, Binding, string, AuditEvent) error
 	CreateBreakGlass(context.Context, BreakGlass, AuditEvent) error
 	ActiveBreakGlass(context.Context, string, string, time.Time) ([]BreakGlass, error)
 	AppendAccessAudit(context.Context, AuditEvent) error
@@ -123,8 +128,9 @@ type Repository interface {
 }
 
 type Options struct {
-	Random io.Reader
+	Random    io.Reader
-	Now    func() time.Time
+	Now       func() time.Time
+	OwnerRole string
 }
 
 type Service struct {
@@ -132,6 +138,7 @@ type Service struct {
 	policy     Policy
 	random     io.Reader
 	now        func() time.Time
+	ownerRole  string
 }
 
 func New(repository Repository, policy Policy, options Options) (*Service, error) {
@@ -147,7 +154,12 @@ func New(repository Repository, policy Policy, options Options) (*Service, error
 	if options.Now == nil {
 		options.Now = time.Now
 	}
-	return &Service{repository: repository, policy: policy, random: options.Random, now: options.Now}, nil
+	if options.OwnerRole != "" {
+		if _, ok := policy.Roles[options.OwnerRole]; !ok {
+			return nil, errors.New("access: owner role is unknown")
+		}
+	}
+	return &Service{repository: repository, policy: policy, random: options.Random, now: options.Now, ownerRole: options.OwnerRole}, nil
 }
 
 func (service *Service) Seed(ctx context.Context) error {
@@ -183,6 +195,62 @@ func (service *Service) Grant(ctx context.Context, input Grant) (Binding, error)
 	return binding, nil
 }
 
+// OrganizationUserBindings lists active, direct, organization-wide user role
+// bindings. Team and narrower project/environment/service grants remain
+// separate because an administration screen must not silently flatten their
+// authority into one apparent role.
+func (service *Service) OrganizationUserBindings(ctx context.Context, organizationID string, limit int) ([]Binding, error) {
+	if !idPattern.MatchString(organizationID) || limit < 1 || limit > 2000 {
+		return nil, errors.New("access: invalid organization binding query")
+	}
+	return service.repository.OrganizationUserBindings(ctx, organizationID, limit)
+}
+
+type OrganizationUserRoleChange struct {
+	OrganizationID     string
+	UserID             string
+	Role               string
+	ActorUserID        string
+	RequestID          string
+	ExpectedBindingIDs []string
+}
+
+// ReplaceOrganizationUserRole atomically replaces every current direct,
+// organization-wide role for one active member with exactly one role. The
+// expected binding IDs make concurrent administration fail closed. When an
+// owner role is configured, the repository also protects the final active
+// direct owner in the same transaction.
+func (service *Service) ReplaceOrganizationUserRole(ctx context.Context, input OrganizationUserRoleChange) (Binding, error) {
+	if service.ownerRole == "" {
+		return Binding{}, errors.New("access: owner role is required for role replacement")
+	}
+	if !idPattern.MatchString(input.OrganizationID) || !idPattern.MatchString(input.UserID) || !idPattern.MatchString(input.ActorUserID) || !text(input.RequestID, 128, true) {
+		return Binding{}, errors.New("access: invalid organization role replacement")
+	}
+	if _, ok := service.policy.Roles[input.Role]; !ok {
+		return Binding{}, errors.New("access: unknown role")
+	}
+	expected, err := canonicalBindingIDs(input.ExpectedBindingIDs)
+	if err != nil {
+		return Binding{}, err
+	}
+	bindingID, err := randomID(service.random)
+	if err != nil {
+		return Binding{}, err
+	}
+	auditID, err := randomID(service.random)
+	if err != nil {
+		return Binding{}, err
+	}
+	now := service.now().UTC()
+	binding := Binding{ID: bindingID, SubjectKind: User, SubjectID: input.UserID, Role: input.Role, Scope: Scope{OrganizationID: input.OrganizationID}, GrantedBy: input.ActorUserID, GrantedAt: now}
+	audit := AuditEvent{ID: auditID, OrganizationID: input.OrganizationID, ActorUserID: input.ActorUserID, Action: "access.role.replace", ResourceType: "user", ResourceID: input.UserID, RequestID: input.RequestID, Summary: "Direct organization role replaced", CreatedAt: now}
+	if err = service.repository.ReplaceOrganizationUserRole(ctx, expected, binding, service.ownerRole, audit); err != nil {
+		return Binding{}, err
+	}
+	return binding, nil
+}
+
 type Decision struct {
 	Allowed bool
 	Source  string
@@ -265,6 +333,20 @@ func randomID(random io.Reader) (string, error) {
 	return base64.RawURLEncoding.EncodeToString(value), nil
 }
 
+func canonicalBindingIDs(values []string) ([]string, error) {
+	if len(values) > 16 {
+		return nil, errors.New("access: invalid expected role bindings")
+	}
+	result := append([]string(nil), values...)
+	sort.Strings(result)
+	for index, value := range result {
+		if !idPattern.MatchString(value) || index > 0 && result[index-1] == value {
+			return nil, errors.New("access: invalid expected role bindings")
+		}
+	}
+	return result, nil
+}
+
 func text(value string, limit int, emptyOK bool) bool {
 	return (emptyOK || value != "") && len(value) <= limit && !strings.ContainsAny(value, "\x00\r\n")
 }

access/access_test.go

@@ -4,6 +4,8 @@ package access
 
 import (
 	"context"
+	"errors"
+	"slices"
 	"strings"
 	"testing"
 	"time"
@@ -56,9 +58,57 @@ func TestScopeHierarchyAndLifetimeFailClosed(t *testing.T) {
 	}
 }
 
+func TestOrganizationUserRoleReplacementIsBoundedAndCanonical(t *testing.T) {
+	now := time.Unix(2000, 0).UTC()
+	policy := Policy{Roles: map[string]string{"owner": "Owner", "viewer": "Viewer"}, Permissions: map[string]string{"site.view": "View site"}, Grants: map[string][]string{"owner": {"site.view"}, "viewer": {"site.view"}}}
+	if _, err := New(&repositoryStub{}, policy, Options{OwnerRole: "missing"}); err == nil {
+		t.Fatal("unknown owner role accepted")
+	}
+	repository := &repositoryStub{}
+	service, err := New(repository, policy, Options{Random: strings.NewReader(strings.Repeat("r", 512)), Now: func() time.Time { return now }, OwnerRole: "owner"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	binding, err := service.ReplaceOrganizationUserRole(t.Context(), OrganizationUserRoleChange{
+		OrganizationID:     "org-12345678",
+		UserID:             "user-12345678",
+		Role:               "viewer",
+		ActorUserID:        "user-87654321",
+		RequestID:          "request-12345678",
+		ExpectedBindingIDs: []string{"binding-22222222", "binding-11111111"},
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if binding.Role != "viewer" || binding.SubjectKind != User || binding.Scope != (Scope{OrganizationID: "org-12345678"}) || binding.GrantedAt != now {
+		t.Fatalf("binding=%+v", binding)
+	}
+	if !slices.Equal(repository.replacedExpected, []string{"binding-11111111", "binding-22222222"}) || repository.replacedOwnerRole != "owner" {
+		t.Fatalf("expected=%v owner=%q", repository.replacedExpected, repository.replacedOwnerRole)
+	}
+	if repository.replacedAccessAudit.Action != "access.role.replace" || repository.replacedAccessAudit.ResourceID != "user-12345678" || repository.replacedAccessAudit.RequestID != "request-12345678" {
+		t.Fatalf("audit=%+v", repository.replacedAccessAudit)
+	}
+	if _, err = service.ReplaceOrganizationUserRole(t.Context(), OrganizationUserRoleChange{OrganizationID: "org-12345678", UserID: "user-12345678", Role: "viewer", ActorUserID: "user-87654321", ExpectedBindingIDs: []string{"binding-11111111", "binding-11111111"}}); err == nil {
+		t.Fatal("duplicate expected binding accepted")
+	}
+	serviceWithoutOwner, err := New(&repositoryStub{}, policy, Options{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err = serviceWithoutOwner.ReplaceOrganizationUserRole(t.Context(), OrganizationUserRoleChange{}); err == nil || errors.Is(err, ErrRoleChangeConflict) {
+		t.Fatalf("missing owner role err=%v", err)
+	}
+}
+
 type repositoryStub struct {
-	bindings   []Binding
+	bindings            []Binding
-	breakGlass []BreakGlass
+	breakGlass          []BreakGlass
+	organizationUser    []Binding
+	replacedExpected    []string
+	replacedBinding     Binding
+	replacedOwnerRole   string
+	replacedAccessAudit AuditEvent
 }
 
 func (*repositoryStub) SeedAccessPolicy(context.Context, Policy) error          { return nil }
@@ -67,6 +117,16 @@ func (*repositoryStub) Revoke(context.Context, string, string, time.Time) error
 func (repository *repositoryStub) EffectiveBindings(context.Context, string, string) ([]Binding, error) {
 	return repository.bindings, nil
 }
+func (repository *repositoryStub) OrganizationUserBindings(context.Context, string, int) ([]Binding, error) {
+	return repository.organizationUser, nil
+}
+func (repository *repositoryStub) ReplaceOrganizationUserRole(_ context.Context, expected []string, binding Binding, ownerRole string, audit AuditEvent) error {
+	repository.replacedExpected = append([]string(nil), expected...)
+	repository.replacedBinding = binding
+	repository.replacedOwnerRole = ownerRole
+	repository.replacedAccessAudit = audit
+	return nil
+}
 func (repository *repositoryStub) CreateBreakGlass(_ context.Context, grant BreakGlass, _ AuditEvent) error {
 	repository.breakGlass = []BreakGlass{grant}
 	return nil

authrecovery/assisted_test.go

@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: MPL-2.0
+
+package authrecovery_test
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"gamertan.com/web/access"
+	"gamertan.com/web/auth"
+	"gamertan.com/web/authrecovery"
+	"gamertan.com/web/authsqlite"
+	"gamertan.com/web/authwebauthn"
+	wa "gamertan.com/web/internal/webauthnvendored/webauthn"
+	"gamertan.com/web/organizations"
+)
+
+func TestOwnerAssistedRecoveryInvalidatesAndAtomicallyReplacesAccountCredentials(t *testing.T) {
+	now := time.Date(2026, 9, 4, 12, 0, 0, 0, time.UTC)
+	store, err := authsqlite.Open(filepath.Join(t.TempDir(), "accounts.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer store.Close()
+	random := &counterReader{}
+	authService, err := auth.New(store, auth.Options{Random: random, Now: func() time.Time { return now }})
+	if err != nil {
+		t.Fatal(err)
+	}
+	owner, err := authService.CreateUser(t.Context(), auth.CreateUser{Username: "home.owner", Email: "owner@example.test", DisplayName: "Home Owner", Password: "owner password for assisted recovery"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	target, err := authService.CreateUser(t.Context(), auth.CreateUser{Username: "recover.member", Email: "member@example.test", DisplayName: "Recover Member", Password: "old member password before recovery"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	organizationsService, err := organizations.New(store, organizations.Options{Random: random, Now: func() time.Time { return now }, OwnerRole: "owner"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	home, err := organizationsService.CreateOrganization(t.Context(), organizations.CreateOrganization{Slug: "assisted-home", Name: "Assisted Home", OwnerUserID: owner.ID})
+	if err != nil {
+		t.Fatal(err)
+	}
+	invitation, _, err := organizationsService.Invite(t.Context(), home.ID, target.Email, owner.ID, time.Hour)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err = organizationsService.AcceptInvitation(t.Context(), invitation, target.ID); err != nil {
+		t.Fatal(err)
+	}
+	policy := access.Policy{
+		Roles:       map[string]string{"owner": "Organization owner", "viewer": "Organization viewer"},
+		Permissions: map[string]string{"account.recover": "Recover an organization member"},
+		Grants:      map[string][]string{"owner": {"account.recover"}, "viewer": {}},
+	}
+	accessService, err := access.New(store, policy, access.Options{Random: random, Now: func() time.Time { return now }, OwnerRole: "owner"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err = accessService.Seed(t.Context()); err != nil {
+		t.Fatal(err)
+	}
+	if _, err = accessService.Grant(t.Context(), access.Grant{SubjectKind: access.User, SubjectID: owner.ID, Role: "owner", Scope: access.Scope{OrganizationID: home.ID}, GrantedBy: owner.ID}); err != nil {
+		t.Fatal(err)
+	}
+	if _, err = accessService.Grant(t.Context(), access.Grant{SubjectKind: access.User, SubjectID: target.ID, Role: "viewer", Scope: access.Scope{OrganizationID: home.ID}, GrantedBy: owner.ID}); err != nil {
+		t.Fatal(err)
+	}
+
+	existingID := bytes.Repeat([]byte{7}, 32)
+	existingJSON, err := json.Marshal(wa.Credential{ID: existingID, PublicKey: []byte{1, 2, 3}})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err = store.SaveCredential(t.Context(), authwebauthn.Credential{ID: existingID, UserID: target.ID, Label: "Old passkey", Data: existingJSON, CreatedAt: now}, auth.AuditEvent{ID: "old-passkey-audit-id", ActorUserID: target.ID, Action: "auth.passkey.add", ResourceType: "passkey", ResourceID: base64.RawURLEncoding.EncodeToString(existingID), Summary: "Old passkey fixture", CreatedAt: now}); err != nil {
+		t.Fatal(err)
+	}
+	passkeys := &passkeyRecoveryStub{now: now, credentialID: bytes.Repeat([]byte{8}, 32)}
+	recovery, err := authrecovery.New(store, authService, authrecovery.Options{Random: random, Now: func() time.Time { return now }, Passkeys: passkeys, OwnerRole: "owner"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	oldCodes, err := recovery.ReplaceCodes(t.Context(), target.ID, target.ID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	oldSession, _, err := authService.IssueSession(t.Context(), target.ID, time.Hour)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if _, _, err = recovery.IssueAssistedRecovery(t.Context(), authrecovery.AssistedIssue{OrganizationID: home.ID, ActorUserID: target.ID, TargetUserID: owner.ID, RequestID: "request-denied-123", Reason: "Target asked for recovery after identity review"}); !errors.Is(err, authrecovery.ErrAssistedDenied) {
+		t.Fatalf("non-owner assisted recovery err=%v", err)
+	}
+	if _, err = authService.VerifyPassword(t.Context(), target.Email, "old member password before recovery"); err != nil {
+		t.Fatalf("denied recovery changed password: %v", err)
+	}
+
+	loaded, grant, err := recovery.IssueAssistedRecovery(t.Context(), authrecovery.AssistedIssue{OrganizationID: home.ID, ActorUserID: owner.ID, TargetUserID: target.ID, RequestID: "request-assisted-123", Reason: "Member verified ownership through the documented support review"})
+	if err != nil || loaded.ID != target.ID || grant == "" {
+		t.Fatalf("loaded=%+v grant_present=%v err=%v", loaded, grant != "", err)
+	}
+	if _, err = authService.Session(t.Context(), oldSession); !errors.Is(err, auth.ErrSessionNotFound) {
+		t.Fatalf("old session survived assisted recovery issue: %v", err)
+	}
+	if _, err = authService.VerifyPassword(t.Context(), target.Email, "old member password before recovery"); !errors.Is(err, auth.ErrInvalidCredentials) {
+		t.Fatalf("old password survived assisted recovery issue: %v", err)
+	}
+	credentials, err := store.CredentialsByUserID(t.Context(), target.ID)
+	if err != nil || len(credentials) != 0 {
+		t.Fatalf("old passkeys survived issue: credentials=%+v err=%v", credentials, err)
+	}
+	if _, _, err = recovery.Begin(t.Context(), target.Email, "old member password before recovery", oldCodes[1]); !errors.Is(err, auth.ErrInvalidCredentials) {
+		t.Fatalf("old recovery path survived issue: %v", err)
+	}
+
+	begin, err := recovery.BeginAssistedPasskey(t.Context(), grant, "Recovered passkey")
+	if err != nil || begin.CeremonyToken == "" || passkeys.userID != target.ID || passkeys.beginBinding != grant {
+		t.Fatalf("begin=%+v passkeys=%+v err=%v", begin, passkeys, err)
+	}
+	result, err := recovery.FinishAssistedRecovery(t.Context(), grant, begin.CeremonyToken, "new member password after recovery", []byte(`{"fixture":true}`))
+	if err != nil || len(result.RecoveryCodes) != authrecovery.DefaultCodeCount {
+		t.Fatalf("result=%+v err=%v", result, err)
+	}
+	if _, err = authService.VerifyPassword(t.Context(), target.Email, "new member password after recovery"); err != nil {
+		t.Fatalf("replacement password unavailable: %v", err)
+	}
+	credentials, err = store.CredentialsByUserID(t.Context(), target.ID)
+	if err != nil || len(credentials) != 1 || !bytes.Equal(credentials[0].ID, passkeys.credentialID) {
+		t.Fatalf("replacement credentials=%+v err=%v", credentials, err)
+	}
+	if _, err = recovery.BeginAssistedPasskey(t.Context(), grant, "Replay"); !errors.Is(err, authrecovery.ErrAssistedNotFound) {
+		t.Fatalf("assisted grant replay err=%v", err)
+	}
+	if _, nextGrant, beginErr := recovery.Begin(t.Context(), target.Email, "new member password after recovery", result.RecoveryCodes[0]); beginErr != nil || nextGrant == "" {
+		t.Fatalf("replacement recovery material unavailable: grant_present=%v err=%v", nextGrant != "", beginErr)
+	}
+	audits, err := accessService.Audit(t.Context(), home.ID, 20)
+	if err != nil {
+		t.Fatal(err)
+	}
+	seenIssue, seenComplete := false, false
+	for _, audit := range audits {
+		seenIssue = seenIssue || audit.Action == "access.account-recovery.issue" && audit.ActorUserID == owner.ID && audit.ResourceID == target.ID && audit.RequestID == "request-assisted-123"
+		seenComplete = seenComplete || audit.Action == "access.account-recovery.complete" && audit.ActorUserID == target.ID && audit.ResourceID == target.ID
+	}
+	if !seenIssue || !seenComplete {
+		t.Fatalf("organization recovery audits issue=%v complete=%v events=%+v", seenIssue, seenComplete, audits)
+	}
+}

authrecovery/recovery.go

@@ -16,14 +16,19 @@ import (
 	"strings"
 	"time"
 
+	"gamertan.com/web/access"
 	"gamertan.com/web/auth"
+	"gamertan.com/web/authwebauthn"
 )
 
 const DefaultCodeCount = 10
 
 var (
-	ErrCodeNotFound  = errors.New("authrecovery: recovery code not found")
+	ErrCodeNotFound       = errors.New("authrecovery: recovery code not found")
-	ErrGrantNotFound = errors.New("authrecovery: recovery grant not found")
+	ErrGrantNotFound      = errors.New("authrecovery: recovery grant not found")
+	ErrAssistedNotFound   = errors.New("authrecovery: assisted recovery grant not found")
+	ErrAssistedDenied     = errors.New("authrecovery: assisted recovery is not authorized")
+	ErrPasskeyUnavailable = errors.New("authrecovery: passkey recovery is unavailable")
 )
 
 type Grant struct {
@@ -39,24 +44,103 @@ type Repository interface {
 	TakeRecoveryGrant(context.Context, [32]byte, time.Time) (auth.User, error)
 }
 
+// PasskeyRepository adds the transactional boundary required to finish a
+// password-plus-recovery-code flow without issuing a normal session.
+type PasskeyRepository interface {
+	Repository
+	RecoveryGrant(context.Context, [32]byte, time.Time) (auth.User, error)
+	CompletePasskeyRecovery(context.Context, PasskeyCompletion) error
+}
+
+// AssistedGrant is the digest-only authority created by an organization
+// owner after a human recovery review. The plaintext token is returned once
+// to the caller and never persisted or audited.
+type AssistedGrant struct {
+	Digest                 [32]byte
+	OrganizationID, UserID string
+	IssuedByUserID         string
+	CreatedAt, ExpiresAt   time.Time
+}
+
+// AssistedIssue binds an owner-reviewed recovery to one organization member.
+// Reason is deliberately bounded and must not contain credential material.
+type AssistedIssue struct {
+	OrganizationID, ActorUserID, TargetUserID, RequestID, Reason string
+}
+
+// AssistedRepository provides the two transactional boundaries for delegated
+// recovery. Issuance invalidates all existing account authenticators and
+// sessions while recording both identity and organization-visible audits.
+// Completion consumes the grant exactly once and installs the replacement
+// password, passkey, and recovery-code set atomically.
+type AssistedRepository interface {
+	Repository
+	IssueAssistedRecovery(context.Context, AssistedGrant, string, auth.AuditEvent, access.AuditEvent) (auth.User, error)
+	AssistedRecoveryGrant(context.Context, [32]byte, time.Time) (AssistedGrant, auth.User, error)
+	CompleteAssistedRecovery(context.Context, AssistedCompletion) error
+}
+
+// AssistedCompletion contains only the password hash, public passkey
+// credential, digest-only recovery codes, and secret-free audit material.
+type AssistedCompletion struct {
+	GrantDigest     [32]byte
+	Credential      authwebauthn.Credential
+	PasswordHash    string
+	RecoveryDigests [][32]byte
+	PasskeyAudit    auth.AuditEvent
+	RecoveryAudit   auth.AuditEvent
+	AccessAudit     access.AuditEvent
+	CompletedAt     time.Time
+}
+
+// Passkeys performs recovery-bound WebAuthn registration ceremonies.
+type Passkeys interface {
+	BeginRecoveryRegistration(context.Context, string, string, []byte) (authwebauthn.BeginResult, error)
+	FinishRecoveryRegistration(context.Context, string, []byte, []byte, authwebauthn.RegistrationCommit) (authwebauthn.Credential, error)
+}
+
+// PasskeyCompletion contains the public credential, digest-only replacement
+// codes, and secret-free audits committed after a recovery ceremony.
+type PasskeyCompletion struct {
+	GrantDigest     [32]byte
+	Credential      authwebauthn.Credential
+	RecoveryDigests [][32]byte
+	PasskeyAudit    auth.AuditEvent
+	RecoveryAudit   auth.AuditEvent
+	CompletedAt     time.Time
+}
+
+// PasskeyFinishResult returns the verified credential and the new plaintext
+// recovery codes. Applications must display the codes once and retain none.
+type PasskeyFinishResult struct {
+	Credential    authwebauthn.Credential
+	RecoveryCodes []string
+}
+
 type PasswordVerifier interface {
 	VerifyPassword(context.Context, string, string) (auth.User, error)
 }
 
 type Options struct {
-	Random        io.Reader
+	Random                io.Reader
-	Now           func() time.Time
+	Now                   func() time.Time
-	CodeCount     int
+	CodeCount             int
-	GrantLifetime time.Duration
+	GrantLifetime         time.Duration
+	AssistedGrantLifetime time.Duration
+	OwnerRole             string
+	Passkeys              Passkeys
 }
 
 type Service struct {
-	repository Repository
+	repository  Repository
-	passwords  PasswordVerifier
+	passwords   PasswordVerifier
-	random     io.Reader
+	random      io.Reader
-	now        func() time.Time
+	now         func() time.Time
-	count      int
+	count       int
-	grantTTL   time.Duration
+	grantTTL    time.Duration
+	assistedTTL time.Duration
+	ownerRole   string
+	passkeys    Passkeys
 }
 
 func New(repository Repository, passwords PasswordVerifier, options Options) (*Service, error) {
@@ -75,10 +159,120 @@ func New(repository Repository, passwords PasswordVerifier, options Options) (*S
 	if options.GrantLifetime == 0 {
 		options.GrantLifetime = 10 * time.Minute
 	}
-	if options.CodeCount < 5 || options.CodeCount > 20 || options.GrantLifetime < 2*time.Minute || options.GrantLifetime > 30*time.Minute {
+	if options.AssistedGrantLifetime == 0 {
+		options.AssistedGrantLifetime = 15 * time.Minute
+	}
+	if options.CodeCount < 5 || options.CodeCount > 20 || options.GrantLifetime < 2*time.Minute || options.GrantLifetime > 30*time.Minute || options.AssistedGrantLifetime < 5*time.Minute || options.AssistedGrantLifetime > 30*time.Minute || options.OwnerRole != "" && !safeRole(options.OwnerRole) {
 		return nil, errors.New("authrecovery: invalid recovery policy")
 	}
-	return &Service{repository: repository, passwords: passwords, random: options.Random, now: options.Now, count: options.CodeCount, grantTTL: options.GrantLifetime}, nil
+	return &Service{repository: repository, passwords: passwords, random: options.Random, now: options.Now, count: options.CodeCount, grantTTL: options.GrantLifetime, assistedTTL: options.AssistedGrantLifetime, ownerRole: options.OwnerRole, passkeys: options.Passkeys}, nil
+}
+
+// IssueAssistedRecovery creates one owner-authorized, single-use recovery
+// token. The repository immediately invalidates the target's previous
+// password, passkeys, recovery codes, sessions, and pending ceremonies so the
+// reviewed recovery cannot race an older authenticator.
+func (service *Service) IssueAssistedRecovery(ctx context.Context, input AssistedIssue) (auth.User, string, error) {
+	repository, ok := service.repository.(AssistedRepository)
+	input.OrganizationID = strings.TrimSpace(input.OrganizationID)
+	input.ActorUserID = strings.TrimSpace(input.ActorUserID)
+	input.TargetUserID = strings.TrimSpace(input.TargetUserID)
+	input.RequestID = strings.TrimSpace(input.RequestID)
+	input.Reason = strings.TrimSpace(input.Reason)
+	if !ok || service.passkeys == nil || service.ownerRole == "" {
+		return auth.User{}, "", ErrPasskeyUnavailable
+	}
+	if !opaqueID(input.OrganizationID) || !opaqueID(input.ActorUserID) || !opaqueID(input.TargetUserID) || input.RequestID != "" && !opaqueID(input.RequestID) || len(input.Reason) < 8 || len(input.Reason) > 240 || strings.ContainsAny(input.Reason, "\x00\r\n") {
+		return auth.User{}, "", errors.New("authrecovery: invalid assisted recovery request")
+	}
+	raw, err := token(service.random, 32)
+	if err != nil {
+		return auth.User{}, "", err
+	}
+	now := service.now().UTC()
+	grant := AssistedGrant{Digest: sha256.Sum256([]byte(raw)), OrganizationID: input.OrganizationID, UserID: input.TargetUserID, IssuedByUserID: input.ActorUserID, CreatedAt: now, ExpiresAt: now.Add(service.assistedTTL)}
+	authAuditID, err := token(service.random, 18)
+	if err != nil {
+		return auth.User{}, "", err
+	}
+	accessAuditID, err := token(service.random, 18)
+	if err != nil {
+		return auth.User{}, "", err
+	}
+	summary := "Owner-assisted account recovery issued after human review. Reason: " + input.Reason
+	authAudit := auth.AuditEvent{ID: authAuditID, ActorUserID: input.ActorUserID, Action: "auth.assisted-recovery.issue", ResourceType: "user", ResourceID: input.TargetUserID, RequestID: input.RequestID, Summary: summary, CreatedAt: now}
+	accessAudit := access.AuditEvent{ID: accessAuditID, OrganizationID: input.OrganizationID, ActorUserID: input.ActorUserID, Action: "access.account-recovery.issue", ResourceType: "user", ResourceID: input.TargetUserID, RequestID: input.RequestID, Summary: summary, CreatedAt: now}
+	user, err := repository.IssueAssistedRecovery(ctx, grant, service.ownerRole, authAudit, accessAudit)
+	if err != nil {
+		return auth.User{}, "", err
+	}
+	return user, raw, nil
+}
+
+// BeginAssistedPasskey starts a replacement ceremony without issuing a normal
+// session. The grant remains reusable for ceremony restart until completion or
+// expiry; only completion consumes it.
+func (service *Service) BeginAssistedPasskey(ctx context.Context, rawGrant, label string) (authwebauthn.BeginResult, error) {
+	repository, ok := service.repository.(AssistedRepository)
+	if !ok || service.passkeys == nil {
+		return authwebauthn.BeginResult{}, ErrPasskeyUnavailable
+	}
+	digest, err := grantDigest(rawGrant)
+	if err != nil {
+		return authwebauthn.BeginResult{}, ErrAssistedNotFound
+	}
+	_, user, err := repository.AssistedRecoveryGrant(ctx, digest, service.now().UTC())
+	if err != nil {
+		return authwebauthn.BeginResult{}, err
+	}
+	return service.passkeys.BeginRecoveryRegistration(ctx, user.ID, label, []byte(rawGrant))
+}
+
+// FinishAssistedRecovery consumes a reviewed grant only inside the transaction
+// that installs every replacement credential and both audit trails. No normal
+// session is issued; the recovered user signs in with the new credentials.
+func (service *Service) FinishAssistedRecovery(ctx context.Context, rawGrant, ceremonyToken, password string, response []byte) (PasskeyFinishResult, error) {
+	repository, ok := service.repository.(AssistedRepository)
+	if !ok || service.passkeys == nil {
+		return PasskeyFinishResult{}, ErrPasskeyUnavailable
+	}
+	digest, err := grantDigest(rawGrant)
+	if err != nil {
+		return PasskeyFinishResult{}, ErrAssistedNotFound
+	}
+	grant, user, err := repository.AssistedRecoveryGrant(ctx, digest, service.now().UTC())
+	if err != nil {
+		return PasskeyFinishResult{}, err
+	}
+	passwordHash, err := auth.HashPasswordWithRandom(password, service.random)
+	if err != nil {
+		return PasskeyFinishResult{}, err
+	}
+	codes, digests, err := GenerateCodeSet(service.random, service.count)
+	if err != nil {
+		return PasskeyFinishResult{}, err
+	}
+	credential, err := service.passkeys.FinishRecoveryRegistration(ctx, ceremonyToken, []byte(rawGrant), response, func(commitContext context.Context, verified authwebauthn.Credential, passkeyAudit auth.AuditEvent) error {
+		if verified.UserID != user.ID {
+			return errors.New("authrecovery: assisted recovery identity mismatch")
+		}
+		completedAt := service.now().UTC()
+		recoveryAuditID, auditErr := token(service.random, 18)
+		if auditErr != nil {
+			return auditErr
+		}
+		accessAuditID, auditErr := token(service.random, 18)
+		if auditErr != nil {
+			return auditErr
+		}
+		recoveryAudit := auth.AuditEvent{ID: recoveryAuditID, ActorUserID: user.ID, Action: "auth.assisted-recovery.complete", ResourceType: "user", ResourceID: user.ID, Summary: "Owner-assisted recovery replaced the password, passkeys, recovery codes, and sessions.", CreatedAt: completedAt}
+		accessAudit := access.AuditEvent{ID: accessAuditID, OrganizationID: grant.OrganizationID, ActorUserID: user.ID, Action: "access.account-recovery.complete", ResourceType: "user", ResourceID: user.ID, Summary: "The organization member completed owner-assisted account recovery.", CreatedAt: completedAt}
+		return repository.CompleteAssistedRecovery(commitContext, AssistedCompletion{GrantDigest: digest, Credential: verified, PasswordHash: passwordHash, RecoveryDigests: digests, PasskeyAudit: passkeyAudit, RecoveryAudit: recoveryAudit, AccessAudit: accessAudit, CompletedAt: completedAt})
+	})
+	if err != nil {
+		return PasskeyFinishResult{}, err
+	}
+	return PasskeyFinishResult{Credential: credential, RecoveryCodes: codes}, nil
 }
 
 // ReplaceCodes creates a complete new recovery-code set. Codes are returned
@@ -133,10 +327,74 @@ func (service *Service) Begin(ctx context.Context, identifier, password, code st
 }
 
 func (service *Service) TakeGrant(ctx context.Context, raw string) (auth.User, error) {
-	if len(raw) < 32 || len(raw) > 128 {
+	digest, err := grantDigest(raw)
-		return auth.User{}, ErrGrantNotFound
+	if err != nil {
+		return auth.User{}, err
 	}
-	return service.repository.TakeRecoveryGrant(ctx, sha256.Sum256([]byte(raw)), service.now().UTC())
+	return service.repository.TakeRecoveryGrant(ctx, digest, service.now().UTC())
+}
+
+// BeginPasskey starts a ceremony only for a live restricted recovery grant.
+// The raw grant remains application-held so a failed or interrupted ceremony
+// can be restarted until the grant expires.
+func (service *Service) BeginPasskey(ctx context.Context, rawGrant, label string) (authwebauthn.BeginResult, error) {
+	repository, ok := service.repository.(PasskeyRepository)
+	if !ok || service.passkeys == nil {
+		return authwebauthn.BeginResult{}, ErrPasskeyUnavailable
+	}
+	digest, err := grantDigest(rawGrant)
+	if err != nil {
+		return authwebauthn.BeginResult{}, err
+	}
+	user, err := repository.RecoveryGrant(ctx, digest, service.now().UTC())
+	if err != nil {
+		return authwebauthn.BeginResult{}, err
+	}
+	return service.passkeys.BeginRecoveryRegistration(ctx, user.ID, label, []byte(rawGrant))
+}
+
+// FinishPasskey consumes the grant only inside the transaction that stores the
+// verified passkey and a fresh recovery-code set. It never issues a session.
+func (service *Service) FinishPasskey(ctx context.Context, rawGrant, ceremonyToken string, response []byte) (PasskeyFinishResult, error) {
+	repository, ok := service.repository.(PasskeyRepository)
+	if !ok || service.passkeys == nil {
+		return PasskeyFinishResult{}, ErrPasskeyUnavailable
+	}
+	digest, err := grantDigest(rawGrant)
+	if err != nil {
+		return PasskeyFinishResult{}, err
+	}
+	user, err := repository.RecoveryGrant(ctx, digest, service.now().UTC())
+	if err != nil {
+		return PasskeyFinishResult{}, err
+	}
+	codes, digests, err := GenerateCodeSet(service.random, service.count)
+	if err != nil {
+		return PasskeyFinishResult{}, err
+	}
+	credential, err := service.passkeys.FinishRecoveryRegistration(ctx, ceremonyToken, []byte(rawGrant), response, func(commitContext context.Context, verified authwebauthn.Credential, passkeyAudit auth.AuditEvent) error {
+		if verified.UserID != user.ID {
+			return errors.New("authrecovery: recovery identity mismatch")
+		}
+		completedAt := service.now().UTC()
+		auditID, auditErr := token(service.random, 18)
+		if auditErr != nil {
+			return auditErr
+		}
+		recoveryAudit := auth.AuditEvent{ID: auditID, ActorUserID: user.ID, Action: "auth.recovery.complete", ResourceType: "user", ResourceID: user.ID, Summary: "Account recovery enrolled a replacement passkey and replaced the recovery-code set.", CreatedAt: completedAt}
+		return repository.CompletePasskeyRecovery(commitContext, PasskeyCompletion{
+			GrantDigest:     digest,
+			Credential:      verified,
+			RecoveryDigests: digests,
+			PasskeyAudit:    passkeyAudit,
+			RecoveryAudit:   recoveryAudit,
+			CompletedAt:     completedAt,
+		})
+	})
+	if err != nil {
+		return PasskeyFinishResult{}, err
+	}
+	return PasskeyFinishResult{Credential: credential, RecoveryCodes: codes}, nil
 }
 
 func GenerateCodeSet(random io.Reader, count int) ([]string, [][32]byte, error) {
@@ -173,6 +431,16 @@ func DigestCode(code string) ([32]byte, error) {
 	return sha256.Sum256(append([]byte("gamertan-web-recovery-code-v1\x00"), decoded...)), nil
 }
 
+func grantDigest(raw string) ([32]byte, error) {
+	if len(raw) < 32 || len(raw) > 128 {
+		return [32]byte{}, ErrGrantNotFound
+	}
+	if _, err := base64.RawURLEncoding.DecodeString(raw); err != nil {
+		return [32]byte{}, ErrGrantNotFound
+	}
+	return sha256.Sum256([]byte(raw)), nil
+}
+
 func token(random io.Reader, size int) (string, error) {
 	value := make([]byte, size)
 	if _, err := io.ReadFull(random, value); err != nil {
@@ -180,3 +448,29 @@ func token(random io.Reader, size int) (string, error) {
 	}
 	return base64.RawURLEncoding.EncodeToString(value), nil
 }
+
+func opaqueID(value string) bool {
+	if len(value) < 8 || len(value) > 128 {
+		return false
+	}
+	for _, character := range value {
+		if character == '-' || character == '_' || character >= 'a' && character <= 'z' || character >= 'A' && character <= 'Z' || character >= '0' && character <= '9' {
+			continue
+		}
+		return false
+	}
+	return true
+}
+
+func safeRole(value string) bool {
+	if len(value) < 1 || len(value) > 96 {
+		return false
+	}
+	for _, character := range value {
+		if character == '-' || character == '_' || character == '.' || character >= 'a' && character <= 'z' || character >= '0' && character <= '9' {
+			continue
+		}
+		return false
+	}
+	return true
+}

authrecovery/recovery_test.go

@@ -3,6 +3,10 @@
 package authrecovery_test
 
 import (
+	"bytes"
+	"context"
+	"encoding/base64"
+	"encoding/json"
 	"errors"
 	"path/filepath"
 	"strings"
@@ -12,6 +16,8 @@ import (
 	"gamertan.com/web/auth"
 	"gamertan.com/web/authrecovery"
 	"gamertan.com/web/authsqlite"
+	"gamertan.com/web/authwebauthn"
+	wa "gamertan.com/web/internal/webauthnvendored/webauthn"
 )
 
 func TestRecoveryCodeIsSingleUseAndRevokesSessions(t *testing.T) {
@@ -61,6 +67,112 @@ func TestRecoveryCodeIsSingleUseAndRevokesSessions(t *testing.T) {
 	}
 }
 
+func TestPasskeyRecoveryAtomicallyReplacesCodesWithoutIssuingSession(t *testing.T) {
+	now := time.Date(2026, 9, 3, 13, 0, 0, 0, time.UTC)
+	store, err := authsqlite.Open(filepath.Join(t.TempDir(), "accounts.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer store.Close()
+	random := &counterReader{}
+	authService, err := auth.New(store, auth.Options{Random: random, Now: func() time.Time { return now }})
+	if err != nil {
+		t.Fatal(err)
+	}
+	user, err := authService.CreateUser(t.Context(), auth.CreateUser{Username: "recover.passkey", Email: "recover-passkey@example.test", DisplayName: "Recover Passkey", Password: "correct horse battery staple"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	existingID := bytes.Repeat([]byte{7}, 32)
+	existingJSON, err := json.Marshal(wa.Credential{ID: existingID, PublicKey: []byte{1, 2, 3}})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err = store.SaveCredential(t.Context(), authwebauthn.Credential{ID: existingID, UserID: user.ID, Label: "Existing passkey", Data: existingJSON, CreatedAt: now}, auth.AuditEvent{ID: "existing-passkey-audit", ActorUserID: user.ID, Action: "auth.passkey.add", ResourceType: "passkey", ResourceID: base64.RawURLEncoding.EncodeToString(existingID), Summary: "Existing passkey fixture.", CreatedAt: now}); err != nil {
+		t.Fatal(err)
+	}
+	passkeys := &passkeyRecoveryStub{now: now, credentialID: existingID}
+	recovery, err := authrecovery.New(store, authService, authrecovery.Options{Random: random, Now: func() time.Time { return now }, Passkeys: passkeys})
+	if err != nil {
+		t.Fatal(err)
+	}
+	oldCodes, err := recovery.ReplaceCodes(t.Context(), user.ID, user.ID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	_, grant, err := recovery.Begin(t.Context(), user.Email, "correct horse battery staple", oldCodes[0])
+	if err != nil {
+		t.Fatal(err)
+	}
+	begin, err := recovery.BeginPasskey(t.Context(), grant, "Replacement passkey")
+	if err != nil || begin.CeremonyToken == "" || passkeys.userID != user.ID || passkeys.beginBinding != grant {
+		t.Fatalf("begin=%+v passkeys=%+v err=%v", begin, passkeys, err)
+	}
+	if _, err = recovery.FinishPasskey(t.Context(), grant, begin.CeremonyToken, []byte(`{"fixture":true}`)); err == nil {
+		t.Fatal("duplicate credential unexpectedly committed")
+	}
+	if _, err = recovery.BeginPasskey(t.Context(), grant, "Retry replacement"); err != nil {
+		t.Fatalf("failed completion consumed recovery grant: %v", err)
+	}
+	lateSession, _, err := authService.IssueSession(t.Context(), user.ID, time.Hour)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	passkeys.credentialID = bytes.Repeat([]byte{8}, 32)
+	result, err := recovery.FinishPasskey(t.Context(), grant, "retry-ceremony-token", []byte(`{"fixture":true}`))
+	if err != nil || len(result.RecoveryCodes) != authrecovery.DefaultCodeCount || !bytes.Equal(result.Credential.ID, passkeys.credentialID) {
+		t.Fatalf("result=%+v err=%v", result, err)
+	}
+	if passkeys.finishBinding != grant {
+		t.Fatal("finish ceremony was not bound to the restricted recovery grant")
+	}
+	if _, err = recovery.TakeGrant(t.Context(), grant); !errors.Is(err, authrecovery.ErrGrantNotFound) {
+		t.Fatalf("completed grant replay err=%v", err)
+	}
+	if _, err = authService.Session(t.Context(), lateSession); !errors.Is(err, auth.ErrSessionNotFound) {
+		t.Fatalf("session created during recovery survived completion: %v", err)
+	}
+	if _, _, err = recovery.Begin(t.Context(), user.Email, "correct horse battery staple", oldCodes[1]); !errors.Is(err, auth.ErrInvalidCredentials) {
+		t.Fatalf("old recovery-code set survived completion: %v", err)
+	}
+	if _, newGrant, beginErr := recovery.Begin(t.Context(), user.Email, "correct horse battery staple", result.RecoveryCodes[0]); beginErr != nil || newGrant == "" {
+		t.Fatalf("new recovery code unavailable: grant=%q err=%v", newGrant, beginErr)
+	}
+	credentials, err := store.CredentialsByUserID(t.Context(), user.ID)
+	if err != nil || len(credentials) != 2 {
+		t.Fatalf("credentials=%+v err=%v", credentials, err)
+	}
+}
+
+type passkeyRecoveryStub struct {
+	now           time.Time
+	userID        string
+	credentialID  []byte
+	beginBinding  string
+	finishBinding string
+}
+
+func (stub *passkeyRecoveryStub) BeginRecoveryRegistration(_ context.Context, userID, _ string, binding []byte) (authwebauthn.BeginResult, error) {
+	stub.userID = userID
+	stub.beginBinding = string(binding)
+	return authwebauthn.BeginResult{CeremonyToken: "recovery-ceremony-token", PublicKey: json.RawMessage(`{"challenge":"fixture"}`), ExpiresAt: stub.now.Add(5 * time.Minute)}, nil
+}
+
+func (stub *passkeyRecoveryStub) FinishRecoveryRegistration(ctx context.Context, _ string, binding, _ []byte, commit authwebauthn.RegistrationCommit) (authwebauthn.Credential, error) {
+	stub.finishBinding = string(binding)
+	encoded, err := json.Marshal(wa.Credential{ID: stub.credentialID, PublicKey: []byte{1, 2, 3}})
+	if err != nil {
+		return authwebauthn.Credential{}, err
+	}
+	credential := authwebauthn.Credential{ID: append([]byte(nil), stub.credentialID...), UserID: stub.userID, Label: "Replacement passkey", Data: encoded, CreatedAt: stub.now}
+	audit := auth.AuditEvent{ID: "recovery-passkey-audit", ActorUserID: stub.userID, Action: "auth.recovery.passkey", ResourceType: "passkey", ResourceID: base64.RawURLEncoding.EncodeToString(stub.credentialID), Summary: "A replacement passkey was enrolled during account recovery.", CreatedAt: stub.now}
+	if err = commit(ctx, credential, audit); err != nil {
+		return authwebauthn.Credential{}, err
+	}
+	return credential, nil
+}
+
 type counterReader struct{ value byte }
 
 func (reader *counterReader) Read(target []byte) (int, error) {

authsqlite/access.go

@@ -6,6 +6,7 @@ import (
 	"context"
 	"database/sql"
 	"errors"
+	"slices"
 	"time"
 
 	"gamertan.com/web/access"
@@ -134,6 +135,159 @@ func (store *Store) EffectiveBindings(ctx context.Context, organizationID, userI
 	return result, rows.Err()
 }
 
+func (store *Store) OrganizationUserBindings(ctx context.Context, organizationID string, limit int) ([]access.Binding, error) {
+	if !opaqueID(organizationID) || limit < 1 || limit > 2000 {
+		return nil, errors.New("authsqlite: invalid organization binding query")
+	}
+	rows, err := store.db.QueryContext(ctx, `SELECT b.id,b.subject_id,b.role_name,b.granted_by_user_id,b.granted_at
+		FROM gwf_access_bindings b
+		JOIN gwf_organization_memberships m ON m.organization_id=b.organization_id AND m.user_id=b.subject_id
+		WHERE b.organization_id=? AND b.subject_kind='user'
+		AND b.project_id IS NULL AND b.environment_id IS NULL AND b.service_id IS NULL
+		AND b.revoked_at IS NULL
+		ORDER BY b.subject_id,b.role_name,b.id
+		LIMIT ?`, organizationID, limit)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	result := make([]access.Binding, 0)
+	for rows.Next() {
+		var binding access.Binding
+		var granted int64
+		if err = rows.Scan(&binding.ID, &binding.SubjectID, &binding.Role, &binding.GrantedBy, &granted); err != nil {
+			return nil, err
+		}
+		binding.SubjectKind = access.User
+		binding.Scope = access.Scope{OrganizationID: organizationID}
+		binding.GrantedAt = time.Unix(granted, 0).UTC()
+		result = append(result, binding)
+	}
+	return result, rows.Err()
+}
+
+func (store *Store) ReplaceOrganizationUserRole(ctx context.Context, expected []string, replacement access.Binding, ownerRole string, audit access.AuditEvent) error {
+	if !validOrganizationRoleReplacement(expected, replacement, ownerRole, audit) {
+		return errors.New("authsqlite: invalid organization role replacement")
+	}
+	tx, err := store.db.BeginTx(ctx, nil)
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+
+	// Acquire the SQLite write lock before reading the optimistic binding set.
+	// This serializes competing role replacements so the loser observes the
+	// committed binding IDs and returns ErrRoleChangeConflict instead of an
+	// ambiguous busy-snapshot error.
+	result, err := tx.ExecContext(ctx, `UPDATE gwf_organization_memberships SET status=status
+		WHERE organization_id=? AND user_id=? AND status='active'
+		AND EXISTS (SELECT 1 FROM gwf_organizations o WHERE o.id=? AND o.status='active')
+		AND EXISTS (SELECT 1 FROM gwf_users u WHERE u.id=? AND u.status='active')`, replacement.Scope.OrganizationID, replacement.GrantedBy, replacement.Scope.OrganizationID, replacement.GrantedBy)
+	if err != nil {
+		return err
+	}
+	if changed, _ := result.RowsAffected(); changed != 1 {
+		return errors.New("authsqlite: role grantor is not active in organization")
+	}
+
+	var active int
+	if err = tx.QueryRowContext(ctx, `SELECT COUNT(*)
+		FROM gwf_organization_memberships m
+		JOIN gwf_organizations o ON o.id=m.organization_id AND o.status='active'
+		JOIN gwf_users u ON u.id=m.user_id AND u.status='active'
+		WHERE m.organization_id=? AND m.user_id=? AND m.status='active'`, replacement.Scope.OrganizationID, replacement.SubjectID).Scan(&active); err != nil {
+		return err
+	}
+	if active != 1 {
+		return errors.New("authsqlite: access subject is not active in organization")
+	}
+
+	rows, err := tx.QueryContext(ctx, `SELECT id,role_name FROM gwf_access_bindings
+		WHERE organization_id=? AND subject_kind='user' AND subject_id=?
+		AND project_id IS NULL AND environment_id IS NULL AND service_id IS NULL
+		AND revoked_at IS NULL ORDER BY id`, replacement.Scope.OrganizationID, replacement.SubjectID)
+	if err != nil {
+		return err
+	}
+	var currentIDs []string
+	var currentRoles []string
+	for rows.Next() {
+		var id, role string
+		if err = rows.Scan(&id, &role); err != nil {
+			rows.Close()
+			return err
+		}
+		currentIDs = append(currentIDs, id)
+		currentRoles = append(currentRoles, role)
+	}
+	if err = rows.Err(); err != nil {
+		rows.Close()
+		return err
+	}
+	if err = rows.Close(); err != nil {
+		return err
+	}
+	if !slices.Equal(currentIDs, expected) {
+		return access.ErrRoleChangeConflict
+	}
+	if len(currentRoles) == 1 && currentRoles[0] == replacement.Role {
+		return access.ErrRoleUnchanged
+	}
+	if replacement.Role != ownerRole && slices.Contains(currentRoles, ownerRole) {
+		var otherOwners int
+		if err = tx.QueryRowContext(ctx, `SELECT COUNT(DISTINCT b.subject_id)
+			FROM gwf_access_bindings b
+			JOIN gwf_organization_memberships m ON m.organization_id=b.organization_id AND m.user_id=b.subject_id AND m.status='active'
+			JOIN gwf_users u ON u.id=m.user_id AND u.status='active'
+			WHERE b.organization_id=? AND b.subject_kind='user' AND b.subject_id<>? AND b.role_name=?
+			AND b.project_id IS NULL AND b.environment_id IS NULL AND b.service_id IS NULL
+			AND b.revoked_at IS NULL`, replacement.Scope.OrganizationID, replacement.SubjectID, ownerRole).Scan(&otherOwners); err != nil {
+			return err
+		}
+		if otherOwners == 0 {
+			return access.ErrLastOwner
+		}
+	}
+
+	if _, err = tx.ExecContext(ctx, `UPDATE gwf_access_bindings SET revoked_by_user_id=?,revoked_at=?
+		WHERE organization_id=? AND subject_kind='user' AND subject_id=?
+		AND project_id IS NULL AND environment_id IS NULL AND service_id IS NULL
+		AND revoked_at IS NULL`, replacement.GrantedBy, replacement.GrantedAt.Unix(), replacement.Scope.OrganizationID, replacement.SubjectID); err != nil {
+		return err
+	}
+	result, err = tx.ExecContext(ctx, `INSERT INTO gwf_access_bindings(id,organization_id,subject_kind,subject_id,role_name,project_id,environment_id,service_id,granted_by_user_id,granted_at)
+		SELECT ?,?,'user',?,?,NULL,NULL,NULL,?,? FROM gwf_access_roles WHERE name=?`, replacement.ID, replacement.Scope.OrganizationID, replacement.SubjectID, replacement.Role, replacement.GrantedBy, replacement.GrantedAt.Unix(), replacement.Role)
+	if err != nil {
+		return err
+	}
+	if changed, _ := result.RowsAffected(); changed != 1 {
+		return errors.New("authsqlite: replacement role has not been seeded")
+	}
+	if err = appendAccessAudit(ctx, tx, audit); err != nil {
+		return err
+	}
+	return tx.Commit()
+}
+
+func validOrganizationRoleReplacement(expected []string, replacement access.Binding, ownerRole string, audit access.AuditEvent) bool {
+	if !safeName(ownerRole) || !opaqueID(replacement.ID) || replacement.SubjectKind != access.User || !opaqueID(replacement.SubjectID) || !safeName(replacement.Role) || replacement.Scope.Validate() != nil || replacement.Scope.ProjectID != "" || replacement.Scope.EnvironmentID != "" || replacement.Scope.ServiceID != "" || !opaqueID(replacement.GrantedBy) || replacement.GrantedAt.IsZero() {
+		return false
+	}
+	if !validAccessAudit(audit) || audit.OrganizationID != replacement.Scope.OrganizationID || audit.ActorUserID != replacement.GrantedBy || audit.Action != "access.role.replace" || audit.ResourceType != "user" || audit.ResourceID != replacement.SubjectID || !audit.CreatedAt.Equal(replacement.GrantedAt) {
+		return false
+	}
+	if len(expected) > 16 || !slices.IsSorted(expected) {
+		return false
+	}
+	for index, id := range expected {
+		if !opaqueID(id) || index > 0 && expected[index-1] == id {
+			return false
+		}
+	}
+	return true
+}
+
 func (store *Store) CreateBreakGlass(ctx context.Context, grant access.BreakGlass, audit access.AuditEvent) error {
 	if !validBreakGlass(grant) || !validAccessAudit(audit) || audit.OrganizationID != grant.OrganizationID || audit.ActorUserID != grant.UserID {
 		return errors.New("authsqlite: invalid break-glass event")

authsqlite/assisted_recovery.go

@@ -0,0 +1,190 @@
+// SPDX-License-Identifier: MPL-2.0
+
+package authsqlite
+
+import (
+	"context"
+	"database/sql"
+	"encoding/base64"
+	"errors"
+	"time"
+
+	"gamertan.com/web/access"
+	"gamertan.com/web/auth"
+	"gamertan.com/web/authrecovery"
+)
+
+func (store *Store) IssueAssistedRecovery(ctx context.Context, grant authrecovery.AssistedGrant, ownerRole string, authAudit auth.AuditEvent, accessAudit access.AuditEvent) (auth.User, error) {
+	if !validAssistedGrant(grant) || !safeName(ownerRole) || !validAuditEvent(authAudit) || authAudit.ActorUserID != grant.IssuedByUserID || authAudit.Action != "auth.assisted-recovery.issue" || authAudit.ResourceType != "user" || authAudit.ResourceID != grant.UserID || !authAudit.CreatedAt.Equal(grant.CreatedAt) || !validAccessAudit(accessAudit) || accessAudit.OrganizationID != grant.OrganizationID || accessAudit.ActorUserID != grant.IssuedByUserID || accessAudit.Action != "access.account-recovery.issue" || accessAudit.ResourceType != "user" || accessAudit.ResourceID != grant.UserID || !accessAudit.CreatedAt.Equal(grant.CreatedAt) {
+		return auth.User{}, errors.New("authsqlite: invalid assisted recovery issue")
+	}
+	tx, err := store.db.BeginTx(ctx, nil)
+	if err != nil {
+		return auth.User{}, err
+	}
+	defer tx.Rollback()
+
+	// Take the SQLite write lock before checking owner authority so a role or
+	// membership mutation cannot race the reviewed recovery decision.
+	result, err := tx.ExecContext(ctx, `UPDATE gwf_organization_memberships SET status=status
+		WHERE organization_id=? AND user_id=? AND status='active'
+		AND EXISTS (SELECT 1 FROM gwf_organizations o WHERE o.id=? AND o.status='active')
+		AND EXISTS (SELECT 1 FROM gwf_users u WHERE u.id=? AND u.status='active' AND u.registration_pending=0)
+		AND EXISTS (SELECT 1 FROM gwf_access_bindings b WHERE b.organization_id=? AND b.subject_kind='user' AND b.subject_id=? AND b.role_name=? AND b.project_id IS NULL AND b.environment_id IS NULL AND b.service_id IS NULL AND b.revoked_at IS NULL)`, grant.OrganizationID, grant.IssuedByUserID, grant.OrganizationID, grant.IssuedByUserID, grant.OrganizationID, grant.IssuedByUserID, ownerRole)
+	if err != nil {
+		return auth.User{}, err
+	}
+	if changed, _ := result.RowsAffected(); changed != 1 {
+		return auth.User{}, authrecovery.ErrAssistedDenied
+	}
+
+	user, err := scanPasskeyUser(tx.QueryRowContext(ctx, `SELECT u.id,u.username,u.email,u.display_name,u.status,u.password_change_required,u.registration_pending,u.created_at,u.updated_at
+		FROM gwf_users u JOIN gwf_organization_memberships m ON m.user_id=u.id
+		WHERE u.id=? AND u.status='active' AND u.registration_pending=0 AND m.organization_id=? AND m.status='active'`, grant.UserID, grant.OrganizationID))
+	if errors.Is(err, auth.ErrUserNotFound) {
+		return auth.User{}, authrecovery.ErrAssistedDenied
+	}
+	if err != nil {
+		return auth.User{}, err
+	}
+
+	for _, statement := range []string{
+		`DELETE FROM gwf_auth_sessions WHERE user_id=?`,
+		`DELETE FROM gwf_passkey_ceremonies WHERE user_id=?`,
+		`DELETE FROM gwf_passkey_enrollment_tokens WHERE user_id=?`,
+		`DELETE FROM gwf_recovery_grants WHERE user_id=?`,
+		`DELETE FROM gwf_assisted_recovery_grants WHERE user_id=?`,
+		`DELETE FROM gwf_password_credentials WHERE user_id=?`,
+		`DELETE FROM gwf_passkey_credentials WHERE user_id=?`,
+		`DELETE FROM gwf_recovery_codes WHERE user_id=?`,
+	} {
+		if _, err = tx.ExecContext(ctx, statement, grant.UserID); err != nil {
+			return auth.User{}, err
+		}
+	}
+	if _, err = tx.ExecContext(ctx, `INSERT INTO gwf_assisted_recovery_grants(token_hash,user_id,organization_id,issued_by_user_id,created_at,expires_at) VALUES(?,?,?,?,?,?)`, grant.Digest[:], grant.UserID, grant.OrganizationID, grant.IssuedByUserID, grant.CreatedAt.Unix(), grant.ExpiresAt.Unix()); err != nil {
+		return auth.User{}, err
+	}
+	if err = appendAudit(ctx, tx, authAudit); err != nil {
+		return auth.User{}, err
+	}
+	if err = appendAccessAudit(ctx, tx, accessAudit); err != nil {
+		return auth.User{}, err
+	}
+	if err = tx.Commit(); err != nil {
+		return auth.User{}, err
+	}
+	return user, nil
+}
+
+func (store *Store) AssistedRecoveryGrant(ctx context.Context, digest [32]byte, now time.Time) (authrecovery.AssistedGrant, auth.User, error) {
+	if zeroDigest(digest) || now.IsZero() {
+		return authrecovery.AssistedGrant{}, auth.User{}, authrecovery.ErrAssistedNotFound
+	}
+	var grant authrecovery.AssistedGrant
+	var user auth.User
+	var created, expires, userCreated, userUpdated int64
+	var passwordChangeRequired, registrationPending int
+	err := store.db.QueryRowContext(ctx, `SELECT g.user_id,g.organization_id,g.issued_by_user_id,g.created_at,g.expires_at,u.username,u.email,u.display_name,u.status,u.password_change_required,u.registration_pending,u.created_at,u.updated_at
+		FROM gwf_assisted_recovery_grants g
+		JOIN gwf_users u ON u.id=g.user_id AND u.status='active' AND u.registration_pending=0
+		JOIN gwf_organizations o ON o.id=g.organization_id AND o.status='active'
+		JOIN gwf_organization_memberships m ON m.organization_id=g.organization_id AND m.user_id=g.user_id AND m.status='active'
+		WHERE g.token_hash=? AND g.expires_at>?`, digest[:], now.Unix()).Scan(&grant.UserID, &grant.OrganizationID, &grant.IssuedByUserID, &created, &expires, &user.Username, &user.Email, &user.DisplayName, &user.Status, &passwordChangeRequired, &registrationPending, &userCreated, &userUpdated)
+	if errors.Is(err, sql.ErrNoRows) {
+		return authrecovery.AssistedGrant{}, auth.User{}, authrecovery.ErrAssistedNotFound
+	}
+	if err != nil {
+		return authrecovery.AssistedGrant{}, auth.User{}, err
+	}
+	grant.Digest, grant.CreatedAt, grant.ExpiresAt = digest, time.Unix(created, 0).UTC(), time.Unix(expires, 0).UTC()
+	user.ID, user.PasswordChangeRequired, user.RegistrationPending = grant.UserID, passwordChangeRequired == 1, registrationPending == 1
+	user.CreatedAt, user.UpdatedAt = time.Unix(userCreated, 0).UTC(), time.Unix(userUpdated, 0).UTC()
+	return grant, user, nil
+}
+
+func (store *Store) CompleteAssistedRecovery(ctx context.Context, completion authrecovery.AssistedCompletion) error {
+	credential := completion.Credential
+	credentialResource := base64.RawURLEncoding.EncodeToString(credential.ID)
+	if zeroDigest(completion.GrantDigest) || !validCredential(credential, true) || !text(completion.PasswordHash, 1024, false) || len(completion.RecoveryDigests) < 5 || len(completion.RecoveryDigests) > 20 || completion.CompletedAt.IsZero() || !validAuditEvent(completion.PasskeyAudit) || completion.PasskeyAudit.ActorUserID != credential.UserID || completion.PasskeyAudit.Action != "auth.recovery.passkey" || completion.PasskeyAudit.ResourceType != "passkey" || completion.PasskeyAudit.ResourceID != credentialResource || !validAuditEvent(completion.RecoveryAudit) || completion.RecoveryAudit.ActorUserID != credential.UserID || completion.RecoveryAudit.Action != "auth.assisted-recovery.complete" || completion.RecoveryAudit.ResourceType != "user" || completion.RecoveryAudit.ResourceID != credential.UserID || !completion.RecoveryAudit.CreatedAt.Equal(completion.CompletedAt) || !validAccessAudit(completion.AccessAudit) || completion.AccessAudit.ActorUserID != credential.UserID || completion.AccessAudit.Action != "access.account-recovery.complete" || completion.AccessAudit.ResourceType != "user" || completion.AccessAudit.ResourceID != credential.UserID || !completion.AccessAudit.CreatedAt.Equal(completion.CompletedAt) {
+		return errors.New("authsqlite: invalid assisted recovery completion")
+	}
+	seen := make(map[[32]byte]struct{}, len(completion.RecoveryDigests))
+	for _, digest := range completion.RecoveryDigests {
+		if zeroDigest(digest) {
+			return errors.New("authsqlite: invalid assisted recovery-code digest")
+		}
+		if _, duplicate := seen[digest]; duplicate {
+			return errors.New("authsqlite: duplicate assisted recovery-code digest")
+		}
+		seen[digest] = struct{}{}
+	}
+	tx, err := store.db.BeginTx(ctx, nil)
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+	var userID, organizationID string
+	err = tx.QueryRowContext(ctx, `DELETE FROM gwf_assisted_recovery_grants WHERE token_hash=? AND expires_at>? RETURNING user_id,organization_id`, completion.GrantDigest[:], completion.CompletedAt.Unix()).Scan(&userID, &organizationID)
+	if errors.Is(err, sql.ErrNoRows) {
+		return authrecovery.ErrAssistedNotFound
+	}
+	if err != nil {
+		return err
+	}
+	if userID != credential.UserID || organizationID != completion.AccessAudit.OrganizationID {
+		return errors.New("authsqlite: assisted recovery identity mismatch")
+	}
+	var active int
+	if err = tx.QueryRowContext(ctx, `SELECT COUNT(*) FROM gwf_users u
+		JOIN gwf_organization_memberships m ON m.user_id=u.id AND m.organization_id=? AND m.status='active'
+		JOIN gwf_organizations o ON o.id=m.organization_id AND o.status='active'
+		WHERE u.id=? AND u.status='active' AND u.registration_pending=0`, organizationID, userID).Scan(&active); err != nil {
+		return err
+	}
+	if active != 1 {
+		return auth.ErrInactiveUser
+	}
+	for _, statement := range []string{
+		`DELETE FROM gwf_auth_sessions WHERE user_id=?`,
+		`DELETE FROM gwf_passkey_ceremonies WHERE user_id=?`,
+		`DELETE FROM gwf_passkey_enrollment_tokens WHERE user_id=?`,
+		`DELETE FROM gwf_recovery_grants WHERE user_id=?`,
+		`DELETE FROM gwf_assisted_recovery_grants WHERE user_id=?`,
+		`DELETE FROM gwf_password_credentials WHERE user_id=?`,
+		`DELETE FROM gwf_passkey_credentials WHERE user_id=?`,
+		`DELETE FROM gwf_recovery_codes WHERE user_id=?`,
+	} {
+		if _, err = tx.ExecContext(ctx, statement, userID); err != nil {
+			return err
+		}
+	}
+	if _, err = tx.ExecContext(ctx, `INSERT INTO gwf_password_credentials(user_id,password_hash,changed_at) VALUES(?,?,?)`, userID, completion.PasswordHash, completion.CompletedAt.Unix()); err != nil {
+		return err
+	}
+	if _, err = tx.ExecContext(ctx, `INSERT INTO gwf_passkey_credentials(credential_id,user_id,label,credential_json,created_at,last_used_at) VALUES(?,?,?,?,?,NULL)`, credential.ID, userID, credential.Label, []byte(credential.Data), credential.CreatedAt.Unix()); err != nil {
+		return err
+	}
+	for _, digest := range completion.RecoveryDigests {
+		if _, err = tx.ExecContext(ctx, `INSERT INTO gwf_recovery_codes(user_id,code_hash,created_at,used_at) VALUES(?,?,?,NULL)`, userID, digest[:], completion.CompletedAt.Unix()); err != nil {
+			return err
+		}
+	}
+	if _, err = tx.ExecContext(ctx, `UPDATE gwf_users SET password_change_required=0,updated_at=? WHERE id=?`, completion.CompletedAt.Unix(), userID); err != nil {
+		return err
+	}
+	if err = appendAudit(ctx, tx, completion.PasskeyAudit); err != nil {
+		return err
+	}
+	if err = appendAudit(ctx, tx, completion.RecoveryAudit); err != nil {
+		return err
+	}
+	if err = appendAccessAudit(ctx, tx, completion.AccessAudit); err != nil {
+		return err
+	}
+	return tx.Commit()
+}
+
+func validAssistedGrant(grant authrecovery.AssistedGrant) bool {
+	return !zeroDigest(grant.Digest) && opaqueID(grant.OrganizationID) && opaqueID(grant.UserID) && opaqueID(grant.IssuedByUserID) && !grant.CreatedAt.IsZero() && grant.ExpiresAt.After(grant.CreatedAt) && grant.ExpiresAt.Sub(grant.CreatedAt) >= 5*time.Minute && grant.ExpiresAt.Sub(grant.CreatedAt) <= 30*time.Minute
+}

authsqlite/bootstrap.go

@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: MPL-2.0
+
+package authsqlite
+
+import (
+	"context"
+	"errors"
+
+	"gamertan.com/web/bootstrap"
+)
+
+// CreateInitialOwner commits the root-local bootstrap across identity,
+// enrollment, organization, membership, owner access, and all audit records.
+func (store *Store) CreateInitialOwner(ctx context.Context, setup bootstrap.Setup) error {
+	user := setup.User
+	organization := setup.Organization
+	membership := setup.Membership
+	binding := setup.OwnerBinding
+	if !validPasskeyUser(user) || !validEnrollment(setup.Enrollment) || setup.Enrollment.UserID != user.ID ||
+		!validOrganization(organization) || organization.Personal || organization.Status != "active" || organization.Revision != 1 ||
+		membership.OrganizationID != organization.ID || membership.UserID != user.ID || membership.Status != "active" || membership.JoinedAt.IsZero() ||
+		!validOwnerBinding(binding, organization.ID, user.ID) ||
+		!validAuditEvent(setup.AuthAudit) || setup.AuthAudit.ActorUserID != user.ID || setup.AuthAudit.Action != "auth.passkey.bootstrap" || setup.AuthAudit.ResourceType != "user" || setup.AuthAudit.ResourceID != user.ID ||
+		!validOrganizationAudit(setup.OrganizationAudit, organization.ID) || setup.OrganizationAudit.ActorUserID != user.ID || setup.OrganizationAudit.Action != "organization.bootstrap" || setup.OrganizationAudit.ResourceType != "organization" || setup.OrganizationAudit.ResourceID != organization.ID ||
+		!validAccessAudit(setup.AccessAudit) || setup.AccessAudit.OrganizationID != organization.ID || setup.AccessAudit.ActorUserID != user.ID || setup.AccessAudit.Action != "access.binding.grant" || setup.AccessAudit.ResourceType != "binding" || setup.AccessAudit.ResourceID != binding.ID {
+		return errors.New("authsqlite: invalid initial owner bootstrap")
+	}
+	tx, err := store.db.BeginTx(ctx, nil)
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+	if _, err = tx.ExecContext(ctx, `INSERT INTO gwf_users(id,username,username_normalized,email,email_normalized,display_name,status,password_change_required,registration_pending,created_at,updated_at) VALUES(?,?,?,?,?,?,?,?,?,?,?)`, user.ID, user.Username, normalize(user.Username), user.Email, normalize(user.Email), user.DisplayName, user.Status, 0, 0, user.CreatedAt.Unix(), user.UpdatedAt.Unix()); err != nil {
+		return err
+	}
+	if _, err = tx.ExecContext(ctx, `INSERT INTO gwf_passkey_enrollment_tokens(token_hash,user_id,created_at,expires_at) VALUES(?,?,?,?)`, setup.Enrollment.Digest[:], user.ID, setup.Enrollment.CreatedAt.Unix(), setup.Enrollment.ExpiresAt.Unix()); err != nil {
+		return err
+	}
+	if _, err = tx.ExecContext(ctx, `INSERT INTO gwf_organizations(id,slug,name,personal,personal_owner_user_id,created_at,status,revision,updated_at) VALUES(?,?,?,0,NULL,?,?,?,?)`, organization.ID, organization.Slug, organization.Name, organization.CreatedAt.Unix(), organization.Status, organization.Revision, organization.UpdatedAt.Unix()); err != nil {
+		return err
+	}
+	if _, err = tx.ExecContext(ctx, `INSERT INTO gwf_organization_memberships(organization_id,user_id,status,joined_at) VALUES(?,?,?,?)`, organization.ID, user.ID, membership.Status, membership.JoinedAt.Unix()); err != nil {
+		return err
+	}
+	result, err := tx.ExecContext(ctx, `INSERT INTO gwf_access_bindings(id,organization_id,subject_kind,subject_id,role_name,project_id,environment_id,service_id,granted_by_user_id,granted_at) SELECT ?,?,'user',?,?,NULL,NULL,NULL,?,? FROM gwf_access_roles WHERE name=?`, binding.ID, organization.ID, user.ID, binding.Role, user.ID, binding.GrantedAt.Unix(), binding.Role)
+	if err != nil {
+		return err
+	}
+	if changed, rowsErr := result.RowsAffected(); rowsErr != nil || changed != 1 {
+		if rowsErr != nil {
+			return rowsErr
+		}
+		return errors.New("authsqlite: initial owner role has not been seeded")
+	}
+	if err = appendAudit(ctx, tx, setup.AuthAudit); err != nil {
+		return err
+	}
+	if err = appendOrganizationAudit(ctx, tx, setup.OrganizationAudit); err != nil {
+		return err
+	}
+	if err = appendAccessAudit(ctx, tx, setup.AccessAudit); err != nil {
+		return err
+	}
+	return tx.Commit()
+}
+
+var _ bootstrap.Repository = (*Store)(nil)

authsqlite/bootstrap_test.go

@@ -0,0 +1,108 @@
+// SPDX-License-Identifier: MPL-2.0
+
+package authsqlite
+
+import (
+	"errors"
+	"testing"
+	"time"
+
+	"gamertan.com/web/access"
+	"gamertan.com/web/auth"
+	"gamertan.com/web/authwebauthn"
+	"gamertan.com/web/bootstrap"
+)
+
+func TestInitialOwnerBootstrapCommitsEveryBoundary(t *testing.T) {
+	store, err := Open(t.TempDir() + "/bootstrap.db")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer store.Close()
+	policy := access.Policy{Roles: map[string]string{"home.owner": "Own the home organization"}, Permissions: map[string]string{"home.manage": "Manage the home organization"}, Grants: map[string][]string{"home.owner": {"home.manage"}}}
+	accessService, err := access.New(store, policy, access.Options{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err = accessService.Seed(t.Context()); err != nil {
+		t.Fatal(err)
+	}
+	now := time.Date(2026, 9, 3, 19, 0, 0, 0, time.UTC)
+	service, err := bootstrap.New(store, bootstrap.Options{OwnerRole: "home.owner", Now: func() time.Time { return now }})
+	if err != nil {
+		t.Fatal(err)
+	}
+	created, err := service.Start(t.Context(), bootstrap.Input{Username: "cole.owner", Email: "cole@example.test", DisplayName: "Cole Speelman", OrganizationSlug: "gamertan", OrganizationName: "Gamertan"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	user, err := store.UserByID(t.Context(), created.User.ID)
+	if err != nil || user.Email != "cole@example.test" {
+		t.Fatalf("user=%+v err=%v", user, err)
+	}
+	organization, err := store.OrganizationByID(t.Context(), created.Organization.ID)
+	if err != nil || organization.Personal || organization.Slug != "gamertan" {
+		t.Fatalf("organization=%+v err=%v", organization, err)
+	}
+	memberships, err := store.MembershipsForUser(t.Context(), user.ID)
+	if err != nil || len(memberships) != 1 || memberships[0].OrganizationID != organization.ID {
+		t.Fatalf("memberships=%+v err=%v", memberships, err)
+	}
+	decision, err := accessService.Authorize(t.Context(), user.ID, access.Scope{OrganizationID: organization.ID}, "home.manage")
+	if err != nil || !decision.Allowed || decision.Role != "home.owner" {
+		t.Fatalf("decision=%+v err=%v", decision, err)
+	}
+	passkeyService := testBootstrapPasskeyService(t, store, now)
+	begin, err := passkeyService.BeginEnrollment(t.Context(), created.EnrollmentToken, "Initial passkey")
+	if err != nil || begin.CeremonyToken == "" {
+		t.Fatalf("begin=%+v err=%v", begin, err)
+	}
+	if _, err = passkeyService.BeginEnrollment(t.Context(), created.EnrollmentToken, "Replay"); !errors.Is(err, authwebauthn.ErrEnrollmentNotFound) {
+		t.Fatalf("enrollment replay err=%v", err)
+	}
+	var authAudits, accessAudits int
+	if err = store.db.QueryRow(`SELECT COUNT(*) FROM gwf_audit_events WHERE resource_id=?`, user.ID).Scan(&authAudits); err != nil {
+		t.Fatal(err)
+	}
+	if err = store.db.QueryRow(`SELECT COUNT(*) FROM gwf_access_audit_events WHERE organization_id=?`, organization.ID).Scan(&accessAudits); err != nil {
+		t.Fatal(err)
+	}
+	if authAudits != 1 || accessAudits != 2 {
+		t.Fatalf("auth audits=%d access audits=%d", authAudits, accessAudits)
+	}
+}
+
+func TestInitialOwnerBootstrapRollsBackWithoutSeededRole(t *testing.T) {
+	store, err := Open(t.TempDir() + "/bootstrap.db")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer store.Close()
+	now := time.Date(2026, 9, 3, 19, 0, 0, 0, time.UTC)
+	service, err := bootstrap.New(store, bootstrap.Options{OwnerRole: "home.owner", Now: func() time.Time { return now }})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err = service.Start(t.Context(), bootstrap.Input{Username: "cole.owner", Email: "cole@example.test", DisplayName: "Cole Speelman", OrganizationSlug: "gamertan", OrganizationName: "Gamertan"}); err == nil {
+		t.Fatal("bootstrap succeeded without seeded role")
+	}
+	for _, table := range []string{"gwf_users", "gwf_organizations", "gwf_organization_memberships", "gwf_access_bindings", "gwf_passkey_enrollment_tokens", "gwf_audit_events", "gwf_access_audit_events"} {
+		var count int
+		if queryErr := store.db.QueryRow(`SELECT COUNT(*) FROM ` + table).Scan(&count); queryErr != nil || count != 0 {
+			t.Fatalf("table=%s count=%d err=%v", table, count, queryErr)
+		}
+	}
+}
+
+func testBootstrapPasskeyService(t *testing.T, store *Store, now time.Time) *authwebauthn.Service {
+	t.Helper()
+	authService, err := auth.New(store, auth.Options{Now: func() time.Time { return now }})
+	if err != nil {
+		t.Fatal(err)
+	}
+	service, err := authwebauthn.New(store, authService, authwebauthn.Config{RPID: "example.test", RPDisplayName: "Example", Origin: "https://example.test", Now: func() time.Time { return now }})
+	if err != nil {
+		t.Fatal(err)
+	}
+	return service
+}

authsqlite/organizations.go

@@ -261,6 +261,34 @@ func (store *Store) MembershipsForUser(ctx context.Context, userID string) ([]or
 	return result, rows.Err()
 }
 
+func (store *Store) OrganizationMemberships(ctx context.Context, organizationID string, limit int) ([]organizations.Membership, error) {
+	if !opaqueID(organizationID) || limit < 1 || limit > 2000 {
+		return nil, errors.New("authsqlite: invalid organization member query")
+	}
+	rows, err := store.db.QueryContext(ctx, `SELECT m.user_id,m.status,m.joined_at
+		FROM gwf_organization_memberships m
+		JOIN gwf_organizations o ON o.id=m.organization_id
+		WHERE m.organization_id=?
+		ORDER BY m.joined_at,m.user_id
+		LIMIT ?`, organizationID, limit)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	result := make([]organizations.Membership, 0)
+	for rows.Next() {
+		var membership organizations.Membership
+		var joined int64
+		if err = rows.Scan(&membership.UserID, &membership.Status, &joined); err != nil {
+			return nil, err
+		}
+		membership.OrganizationID = organizationID
+		membership.JoinedAt = time.Unix(joined, 0).UTC()
+		result = append(result, membership)
+	}
+	return result, rows.Err()
+}
+
 func (store *Store) TeamsForUser(ctx context.Context, organizationID, userID string) ([]organizations.Team, error) {
 	if !opaqueID(organizationID) || !opaqueID(userID) {
 		return nil, errors.New("authsqlite: invalid team query")
@@ -425,6 +453,48 @@ func (store *Store) SetMembershipStatus(ctx context.Context, organizationID, use
 	return tx.Commit()
 }
 
+func (store *Store) ChangeMembershipStatus(ctx context.Context, input organizations.MembershipStatusChange, ownerRole string, audit organizations.AuditEvent) error {
+	if !validMembershipStatusChange(input, ownerRole, audit) {
+		return organizations.ErrMembershipNotFound
+	}
+	tx, err := store.db.BeginTx(ctx, nil)
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+	if err = lockActiveMembershipActor(ctx, tx, input.OrganizationID, input.ActorUserID); err != nil {
+		return err
+	}
+	current, err := membershipStatus(ctx, tx, input.OrganizationID, input.UserID)
+	if err != nil {
+		return err
+	}
+	if current != input.ExpectedStatus {
+		return organizations.ErrRevisionConflict
+	}
+	if input.Status == "suspended" {
+		if err = protectLastOwner(ctx, tx, input.OrganizationID, input.UserID, ownerRole); err != nil {
+			return err
+		}
+	}
+	result, err := tx.ExecContext(ctx, `UPDATE gwf_organization_memberships SET status=? WHERE organization_id=? AND user_id=? AND status=?`, input.Status, input.OrganizationID, input.UserID, input.ExpectedStatus)
+	if err != nil {
+		return err
+	}
+	if changed, _ := result.RowsAffected(); changed != 1 {
+		return organizations.ErrRevisionConflict
+	}
+	if input.Status == "suspended" {
+		if _, err = tx.ExecContext(ctx, `DELETE FROM gwf_team_members WHERE user_id=? AND team_id IN (SELECT id FROM gwf_teams WHERE organization_id=?)`, input.UserID, input.OrganizationID); err != nil {
+			return err
+		}
+	}
+	if err = appendOrganizationAudit(ctx, tx, audit); err != nil {
+		return err
+	}
+	return tx.Commit()
+}
+
 func (store *Store) RemoveMembership(ctx context.Context, organizationID, userID, ownerRole string, audit organizations.AuditEvent) error {
 	if !opaqueID(organizationID) || !opaqueID(userID) || !safeName(ownerRole) || !validOrganizationAudit(audit, organizationID) {
 		return organizations.ErrMembershipNotFound
@@ -456,6 +526,77 @@ func (store *Store) RemoveMembership(ctx context.Context, organizationID, userID
 	return tx.Commit()
 }
 
+func (store *Store) RemoveMembershipIfCurrent(ctx context.Context, input organizations.MembershipRemoval, ownerRole string, audit organizations.AuditEvent) error {
+	if !validMembershipRemoval(input, ownerRole, audit) {
+		return organizations.ErrMembershipNotFound
+	}
+	tx, err := store.db.BeginTx(ctx, nil)
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+	if err = lockActiveMembershipActor(ctx, tx, input.OrganizationID, input.ActorUserID); err != nil {
+		return err
+	}
+	current, err := membershipStatus(ctx, tx, input.OrganizationID, input.UserID)
+	if err != nil {
+		return err
+	}
+	if current != input.ExpectedStatus {
+		return organizations.ErrRevisionConflict
+	}
+	if err = protectLastOwner(ctx, tx, input.OrganizationID, input.UserID, ownerRole); err != nil {
+		return err
+	}
+	if _, err = tx.ExecContext(ctx, `DELETE FROM gwf_team_members WHERE user_id=? AND team_id IN (SELECT id FROM gwf_teams WHERE organization_id=?)`, input.UserID, input.OrganizationID); err != nil {
+		return err
+	}
+	if _, err = tx.ExecContext(ctx, `UPDATE gwf_access_bindings SET revoked_by_user_id=?,revoked_at=? WHERE organization_id=? AND subject_kind='user' AND subject_id=? AND revoked_at IS NULL`, audit.ActorUserID, audit.CreatedAt.Unix(), input.OrganizationID, input.UserID); err != nil {
+		return err
+	}
+	result, err := tx.ExecContext(ctx, `DELETE FROM gwf_organization_memberships WHERE organization_id=? AND user_id=? AND status=?`, input.OrganizationID, input.UserID, input.ExpectedStatus)
+	if err != nil {
+		return err
+	}
+	if changed, _ := result.RowsAffected(); changed != 1 {
+		return organizations.ErrRevisionConflict
+	}
+	if err = appendOrganizationAudit(ctx, tx, audit); err != nil {
+		return err
+	}
+	return tx.Commit()
+}
+
+func lockActiveMembershipActor(ctx context.Context, tx *sql.Tx, organizationID, actorUserID string) error {
+	// Acquire the SQLite write lock before reading the optimistic state. This
+	// makes a competing lifecycle transaction observe the committed winner.
+	result, err := tx.ExecContext(ctx, `UPDATE gwf_organization_memberships SET status=status
+		WHERE organization_id=? AND user_id=? AND status='active'
+		AND EXISTS (SELECT 1 FROM gwf_organizations o WHERE o.id=? AND o.status='active')
+		AND EXISTS (SELECT 1 FROM gwf_users u WHERE u.id=? AND u.status='active')`, organizationID, actorUserID, organizationID, actorUserID)
+	if err != nil {
+		return err
+	}
+	if changed, _ := result.RowsAffected(); changed != 1 {
+		return organizations.ErrMembershipNotFound
+	}
+	return nil
+}
+
+func membershipStatus(ctx context.Context, tx *sql.Tx, organizationID, userID string) (string, error) {
+	var status string
+	if err := tx.QueryRowContext(ctx, `SELECT status FROM gwf_organization_memberships WHERE organization_id=? AND user_id=?`, organizationID, userID).Scan(&status); err != nil {
+		if errors.Is(err, sql.ErrNoRows) {
+			return "", organizations.ErrMembershipNotFound
+		}
+		return "", err
+	}
+	if status != "active" && status != "suspended" {
+		return "", errors.New("authsqlite: stored membership status is invalid")
+	}
+	return status, nil
+}
+
 func protectLastOwner(ctx context.Context, tx *sql.Tx, organizationID, userID, ownerRole string) error {
 	var targetIsOwner int
 	if err := tx.QueryRowContext(ctx, `SELECT COUNT(*) FROM gwf_access_bindings WHERE organization_id=? AND subject_kind='user' AND subject_id=? AND role_name=? AND project_id IS NULL AND environment_id IS NULL AND service_id IS NULL AND revoked_at IS NULL`, organizationID, userID, ownerRole).Scan(&targetIsOwner); err != nil {
@@ -464,16 +605,37 @@ func protectLastOwner(ctx context.Context, tx *sql.Tx, organizationID, userID, o
 	if targetIsOwner == 0 {
 		return nil
 	}
-	var activeOwners int
+	var otherActiveOwners int
-	if err := tx.QueryRowContext(ctx, `SELECT COUNT(DISTINCT b.subject_id) FROM gwf_access_bindings b JOIN gwf_organization_memberships m ON m.organization_id=b.organization_id AND m.user_id=b.subject_id AND m.status='active' WHERE b.organization_id=? AND b.subject_kind='user' AND b.role_name=? AND b.project_id IS NULL AND b.environment_id IS NULL AND b.service_id IS NULL AND b.revoked_at IS NULL`, organizationID, ownerRole).Scan(&activeOwners); err != nil {
+	if err := tx.QueryRowContext(ctx, `SELECT COUNT(DISTINCT b.subject_id)
+		FROM gwf_access_bindings b
+		JOIN gwf_organization_memberships m ON m.organization_id=b.organization_id AND m.user_id=b.subject_id AND m.status='active'
+		JOIN gwf_users u ON u.id=m.user_id AND u.status='active'
+		WHERE b.organization_id=? AND b.subject_kind='user' AND b.subject_id<>? AND b.role_name=?
+		AND b.project_id IS NULL AND b.environment_id IS NULL AND b.service_id IS NULL
+		AND b.revoked_at IS NULL`, organizationID, userID, ownerRole).Scan(&otherActiveOwners); err != nil {
 		return err
 	}
-	if activeOwners <= 1 {
+	if otherActiveOwners == 0 {
 		return organizations.ErrLastOwner
 	}
 	return nil
 }
 
+func validMembershipStatusChange(input organizations.MembershipStatusChange, ownerRole string, audit organizations.AuditEvent) bool {
+	return opaqueID(input.OrganizationID) && opaqueID(input.UserID) && opaqueID(input.ActorUserID) && safeName(ownerRole) &&
+		(input.ExpectedStatus == "active" || input.ExpectedStatus == "suspended") &&
+		(input.Status == "active" || input.Status == "suspended") && input.ExpectedStatus != input.Status &&
+		validOrganizationAudit(audit, input.OrganizationID) && audit.ActorUserID == input.ActorUserID &&
+		audit.Action == "membership."+input.Status && audit.ResourceType == "membership" && audit.ResourceID == input.UserID && audit.RequestID == input.RequestID
+}
+
+func validMembershipRemoval(input organizations.MembershipRemoval, ownerRole string, audit organizations.AuditEvent) bool {
+	return opaqueID(input.OrganizationID) && opaqueID(input.UserID) && opaqueID(input.ActorUserID) && safeName(ownerRole) &&
+		(input.ExpectedStatus == "active" || input.ExpectedStatus == "suspended") &&
+		validOrganizationAudit(audit, input.OrganizationID) && audit.ActorUserID == input.ActorUserID &&
+		audit.Action == "membership.remove" && audit.ResourceType == "membership" && audit.ResourceID == input.UserID && audit.RequestID == input.RequestID
+}
+
 func (store *Store) Invitations(ctx context.Context, organizationID string, limit int) ([]organizations.Invitation, error) {
 	if !opaqueID(organizationID) || limit < 1 || limit > 1000 {
 		return nil, errors.New("authsqlite: invalid invitation query")

authsqlite/recovery.go

@@ -3,8 +3,10 @@
 package authsqlite
 
 import (
+	"bytes"
 	"context"
 	"database/sql"
+	"encoding/base64"
 	"errors"
 	"time"
 
@@ -38,6 +40,100 @@ func (store *Store) ReplaceRecoveryCodes(ctx context.Context, userID string, dig
 	return tx.Commit()
 }
 
+func (store *Store) RecoveryGrant(ctx context.Context, digest [32]byte, now time.Time) (auth.User, error) {
+	if zeroDigest(digest) || now.IsZero() {
+		return auth.User{}, authrecovery.ErrGrantNotFound
+	}
+	user, err := scanPasskeyUser(store.db.QueryRowContext(ctx, `SELECT u.id,u.username,u.email,u.display_name,u.status,u.password_change_required,u.registration_pending,u.created_at,u.updated_at FROM gwf_recovery_grants g JOIN gwf_users u ON u.id=g.user_id WHERE g.token_hash=? AND g.expires_at>?`, digest[:], now.Unix()))
+	if errors.Is(err, auth.ErrUserNotFound) {
+		return auth.User{}, authrecovery.ErrGrantNotFound
+	}
+	return user, err
+}
+
+func (store *Store) CompletePasskeyRecovery(ctx context.Context, completion authrecovery.PasskeyCompletion) error {
+	credential := completion.Credential
+	credentialResource := base64.RawURLEncoding.EncodeToString(credential.ID)
+	if zeroDigest(completion.GrantDigest) || !validCredential(credential, true) || len(completion.RecoveryDigests) < 5 || len(completion.RecoveryDigests) > 20 || completion.CompletedAt.IsZero() || !validAuditEvent(completion.PasskeyAudit) || !validAuditEvent(completion.RecoveryAudit) || completion.PasskeyAudit.ActorUserID != credential.UserID || completion.PasskeyAudit.Action != "auth.recovery.passkey" || completion.PasskeyAudit.ResourceType != "passkey" || completion.PasskeyAudit.ResourceID != credentialResource || completion.RecoveryAudit.ActorUserID != credential.UserID || completion.RecoveryAudit.Action != "auth.recovery.complete" || completion.RecoveryAudit.ResourceType != "user" || completion.RecoveryAudit.ResourceID != credential.UserID {
+		return errors.New("authsqlite: invalid passkey recovery completion")
+	}
+	seen := make(map[[32]byte]struct{}, len(completion.RecoveryDigests))
+	for _, digest := range completion.RecoveryDigests {
+		if zeroDigest(digest) {
+			return errors.New("authsqlite: invalid recovery-code digest")
+		}
+		if _, exists := seen[digest]; exists {
+			return errors.New("authsqlite: duplicate recovery-code digest")
+		}
+		seen[digest] = struct{}{}
+	}
+	tx, err := store.db.BeginTx(ctx, nil)
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+	var userID string
+	err = tx.QueryRowContext(ctx, `DELETE FROM gwf_recovery_grants WHERE token_hash=? AND expires_at>? RETURNING user_id`, completion.GrantDigest[:], completion.CompletedAt.Unix()).Scan(&userID)
+	if errors.Is(err, sql.ErrNoRows) {
+		return authrecovery.ErrGrantNotFound
+	}
+	if err != nil {
+		return err
+	}
+	if userID != credential.UserID {
+		return errors.New("authsqlite: passkey recovery identity mismatch")
+	}
+	var active, pending int
+	if err = tx.QueryRowContext(ctx, `SELECT status='active',registration_pending FROM gwf_users WHERE id=?`, userID).Scan(&active, &pending); err != nil || active != 1 || pending != 0 {
+		if err != nil && !errors.Is(err, sql.ErrNoRows) {
+			return err
+		}
+		return auth.ErrInactiveUser
+	}
+	existing, err := tx.QueryContext(ctx, `SELECT credential_id FROM gwf_passkey_credentials WHERE user_id=?`, userID)
+	if err != nil {
+		return err
+	}
+	for existing.Next() {
+		var id []byte
+		if err = existing.Scan(&id); err != nil {
+			existing.Close()
+			return err
+		}
+		if bytes.Equal(id, credential.ID) {
+			existing.Close()
+			return errors.New("authsqlite: passkey credential already exists")
+		}
+	}
+	if err = existing.Close(); err != nil {
+		return err
+	}
+	if _, err = tx.ExecContext(ctx, `INSERT INTO gwf_passkey_credentials(credential_id,user_id,label,credential_json,created_at,last_used_at) VALUES(?,?,?,?,?,NULL)`, credential.ID, userID, credential.Label, []byte(credential.Data), credential.CreatedAt.Unix()); err != nil {
+		return err
+	}
+	if _, err = tx.ExecContext(ctx, `DELETE FROM gwf_recovery_codes WHERE user_id=?`, userID); err != nil {
+		return err
+	}
+	for _, digest := range completion.RecoveryDigests {
+		if _, err = tx.ExecContext(ctx, `INSERT INTO gwf_recovery_codes(user_id,code_hash,created_at,used_at) VALUES(?,?,?,NULL)`, userID, digest[:], completion.CompletedAt.Unix()); err != nil {
+			return err
+		}
+	}
+	if _, err = tx.ExecContext(ctx, `DELETE FROM gwf_auth_sessions WHERE user_id=?`, userID); err != nil {
+		return err
+	}
+	if _, err = tx.ExecContext(ctx, `DELETE FROM gwf_passkey_ceremonies WHERE user_id=?`, userID); err != nil {
+		return err
+	}
+	if err = appendAudit(ctx, tx, completion.PasskeyAudit); err != nil {
+		return err
+	}
+	if err = appendAudit(ctx, tx, completion.RecoveryAudit); err != nil {
+		return err
+	}
+	return tx.Commit()
+}
+
 func (store *Store) ConsumeRecoveryCodeAndCreateGrant(ctx context.Context, userID string, codeDigest [32]byte, grant authrecovery.Grant, audit auth.AuditEvent) error {
 	if !opaqueID(userID) || zeroDigest(codeDigest) || grant.UserID != userID || zeroDigest(grant.Digest) || grant.CreatedAt.IsZero() || !grant.ExpiresAt.After(grant.CreatedAt) || grant.ExpiresAt.Sub(grant.CreatedAt) > 30*time.Minute || !validAuditEvent(audit) || audit.ResourceID != userID {
 		return errors.New("authsqlite: invalid recovery attempt")

authsqlite/store.go

@@ -77,7 +77,7 @@ func OpenWithOptions(path string, options OpenOptions) (*Store, error) {
 	return store, nil
 }
 
-const SchemaVersion = 8
+const SchemaVersion = 9
 
 func (store *Store) CurrentSchema(ctx context.Context) (int, error) {
 	var exists int
@@ -136,6 +136,8 @@ func (store *Store) Migrate(ctx context.Context) error {
 		`CREATE TABLE IF NOT EXISTS gwf_recovery_codes (user_id TEXT NOT NULL REFERENCES gwf_users(id) ON DELETE CASCADE, code_hash BLOB NOT NULL, created_at INTEGER NOT NULL, used_at INTEGER, PRIMARY KEY(user_id,code_hash))`,
 		`CREATE TABLE IF NOT EXISTS gwf_recovery_grants (token_hash BLOB PRIMARY KEY, user_id TEXT NOT NULL REFERENCES gwf_users(id) ON DELETE CASCADE, created_at INTEGER NOT NULL, expires_at INTEGER NOT NULL)`,
 		`CREATE INDEX IF NOT EXISTS gwf_recovery_grants_expiry ON gwf_recovery_grants(expires_at)`,
+		`CREATE TABLE IF NOT EXISTS gwf_assisted_recovery_grants (token_hash BLOB PRIMARY KEY, user_id TEXT NOT NULL REFERENCES gwf_users(id) ON DELETE CASCADE, organization_id TEXT NOT NULL REFERENCES gwf_organizations(id) ON DELETE CASCADE, issued_by_user_id TEXT NOT NULL REFERENCES gwf_users(id), created_at INTEGER NOT NULL, expires_at INTEGER NOT NULL)`,
+		`CREATE INDEX IF NOT EXISTS gwf_assisted_recovery_grants_expiry ON gwf_assisted_recovery_grants(expires_at)`,
 		`CREATE TABLE IF NOT EXISTS gwf_account_registrations (token_hash BLOB PRIMARY KEY, user_id TEXT NOT NULL UNIQUE REFERENCES gwf_users(id) ON DELETE CASCADE, created_at INTEGER NOT NULL, expires_at INTEGER NOT NULL)`,
 		`CREATE INDEX IF NOT EXISTS gwf_account_registrations_expiry ON gwf_account_registrations(expires_at)`,
 		`CREATE TABLE IF NOT EXISTS gwf_organizations (id TEXT PRIMARY KEY, slug TEXT NOT NULL UNIQUE, name TEXT NOT NULL, personal INTEGER NOT NULL CHECK(personal IN (0,1)), personal_owner_user_id TEXT UNIQUE REFERENCES gwf_users(id) ON DELETE CASCADE, status TEXT NOT NULL DEFAULT 'active' CHECK(status IN ('active','archived')), revision INTEGER NOT NULL DEFAULT 1 CHECK(revision > 0), created_at INTEGER NOT NULL, updated_at INTEGER NOT NULL)`,
@@ -234,6 +236,9 @@ func (store *Store) Migrate(ctx context.Context) error {
 	if _, err = tx.ExecContext(ctx, `INSERT OR IGNORE INTO gamertan_web_migrations(version,applied_at) VALUES(8,?)`, time.Now().UTC().Unix()); err != nil {
 		return err
 	}
+	if _, err = tx.ExecContext(ctx, `INSERT OR IGNORE INTO gamertan_web_migrations(version,applied_at) VALUES(9,?)`, time.Now().UTC().Unix()); err != nil {
+		return err
+	}
 	return tx.Commit()
 }
 

authsqlite/store_test.go

@@ -438,7 +438,7 @@ func TestInvitationAccessLifecycleAndLastOwnerProtection(t *testing.T) {
 	if _, err = accessService.Grant(t.Context(), access.Grant{SubjectKind: access.User, SubjectID: owner.ID, Role: "organization.owner", Scope: access.Scope{OrganizationID: organization.ID}, GrantedBy: owner.ID}); err != nil {
 		t.Fatal(err)
 	}
-	if err = organizationService.SetMembershipStatus(t.Context(), organization.ID, owner.ID, "suspended", owner.ID, "request-last-owner"); !errors.Is(err, organizations.ErrLastOwner) {
+	if err = organizationService.ChangeMembershipStatus(t.Context(), organizations.MembershipStatusChange{OrganizationID: organization.ID, UserID: owner.ID, ExpectedStatus: "active", Status: "suspended", ActorUserID: owner.ID, RequestID: "request-last-owner"}); !errors.Is(err, organizations.ErrLastOwner) {
 		t.Fatalf("last-owner suspension err=%v", err)
 	}
 	team, err := organizationService.CreateTeam(t.Context(), organizations.CreateTeam{OrganizationID: organization.ID, Slug: "operators", Name: "Operators", ActorUserID: owner.ID})
@@ -463,10 +463,10 @@ func TestInvitationAccessLifecycleAndLastOwnerProtection(t *testing.T) {
 	if err != nil || len(teams) != 1 || teams[0].ID != team.ID {
 		t.Fatalf("member teams=%+v err=%v", teams, err)
 	}
-	if err = organizationService.SetMembershipStatus(t.Context(), organization.ID, owner.ID, "suspended", owner.ID, "request-suspend-owner"); err != nil {
+	if err = organizationService.ChangeMembershipStatus(t.Context(), organizations.MembershipStatusChange{OrganizationID: organization.ID, UserID: owner.ID, ExpectedStatus: "active", Status: "suspended", ActorUserID: owner.ID, RequestID: "request-suspend-owner"}); err != nil {
 		t.Fatal(err)
 	}
-	if err = organizationService.RemoveMembership(t.Context(), organization.ID, member.ID, member.ID, "request-last-member"); !errors.Is(err, organizations.ErrLastOwner) {
+	if err = organizationService.RemoveMembershipIfCurrent(t.Context(), organizations.MembershipRemoval{OrganizationID: organization.ID, UserID: member.ID, ExpectedStatus: "active", ActorUserID: member.ID, RequestID: "request-last-member"}); !errors.Is(err, organizations.ErrLastOwner) {
 		t.Fatalf("sole active owner removal err=%v", err)
 	}
 	if _, err = organizationService.SetOrganizationStatus(t.Context(), organizations.SetOrganizationStatus{ID: organization.ID, Status: "archived", ActorUserID: member.ID, ExpectedRevision: organization.Revision, RequestID: "request-archive"}); err != nil {
@@ -477,3 +477,276 @@ func TestInvitationAccessLifecycleAndLastOwnerProtection(t *testing.T) {
 		t.Fatalf("archived organization decision=%+v err=%v", decision, err)
 	}
 }
+
+func TestOrganizationRoleAdministrationIsAtomicAndProtectsOwners(t *testing.T) {
+	store, err := Open(filepath.Join(t.TempDir(), "accounts.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer store.Close()
+	now := time.Date(2026, 9, 3, 16, 0, 0, 0, time.UTC)
+	authService, err := auth.New(store, auth.Options{Now: func() time.Time { return now }})
+	if err != nil {
+		t.Fatal(err)
+	}
+	owner, err := authService.CreateUser(t.Context(), auth.CreateUser{Username: "access.owner", Email: "access-owner@example.test", DisplayName: "Access Owner", Password: "correct horse battery staple"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	member, err := authService.CreateUser(t.Context(), auth.CreateUser{Username: "access.member", Email: "access-member@example.test", DisplayName: "Access Member", Password: "correct horse battery staple"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	organizationService, err := organizations.New(store, organizations.Options{Now: func() time.Time { return now }, OwnerRole: "owner"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	organization, err := organizationService.CreateOrganization(t.Context(), organizations.CreateOrganization{Slug: "access-admin", Name: "Access Admin", OwnerUserID: owner.ID})
+	if err != nil {
+		t.Fatal(err)
+	}
+	raw, _, err := organizationService.Invite(t.Context(), organization.ID, member.Email, owner.ID, time.Hour)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err = organizationService.AcceptInvitation(t.Context(), raw, member.ID); err != nil {
+		t.Fatal(err)
+	}
+	policy := access.Policy{
+		Roles:       map[string]string{"owner": "Owner", "viewer": "Viewer"},
+		Permissions: map[string]string{"site.view": "View site"},
+		Grants:      map[string][]string{"owner": {"site.view"}, "viewer": {"site.view"}},
+	}
+	accessService, err := access.New(store, policy, access.Options{Now: func() time.Time { return now }, OwnerRole: "owner"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err = accessService.Seed(t.Context()); err != nil {
+		t.Fatal(err)
+	}
+	ownerBinding, err := accessService.Grant(t.Context(), access.Grant{SubjectKind: access.User, SubjectID: owner.ID, Role: "owner", Scope: access.Scope{OrganizationID: organization.ID}, GrantedBy: owner.ID})
+	if err != nil {
+		t.Fatal(err)
+	}
+	memberBinding, err := accessService.Grant(t.Context(), access.Grant{SubjectKind: access.User, SubjectID: member.ID, Role: "viewer", Scope: access.Scope{OrganizationID: organization.ID}, GrantedBy: owner.ID})
+	if err != nil {
+		t.Fatal(err)
+	}
+	project, err := organizationService.CreateProject(t.Context(), organizations.CreateProject{OrganizationID: organization.ID, Slug: "narrow", Name: "Narrow"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err = accessService.Grant(t.Context(), access.Grant{SubjectKind: access.User, SubjectID: member.ID, Role: "viewer", Scope: access.Scope{OrganizationID: organization.ID, ProjectID: project.ID}, GrantedBy: owner.ID}); err != nil {
+		t.Fatal(err)
+	}
+
+	members, err := organizationService.Members(t.Context(), organization.ID, 10)
+	if err != nil || len(members) != 2 || !membershipPresent(members, owner.ID, "active") || !membershipPresent(members, member.ID, "active") {
+		t.Fatalf("members=%+v err=%v", members, err)
+	}
+	direct, err := accessService.OrganizationUserBindings(t.Context(), organization.ID, 10)
+	if err != nil || len(direct) != 2 {
+		t.Fatalf("direct=%+v err=%v", direct, err)
+	}
+
+	type replacementResult struct {
+		binding access.Binding
+		err     error
+	}
+	start := make(chan struct{})
+	results := make(chan replacementResult, 2)
+	for _, requestID := range []string{"request-member-owner-one", "request-member-owner-two"} {
+		requestID := requestID
+		go func() {
+			<-start
+			binding, replaceErr := accessService.ReplaceOrganizationUserRole(t.Context(), access.OrganizationUserRoleChange{OrganizationID: organization.ID, UserID: member.ID, Role: "owner", ActorUserID: owner.ID, RequestID: requestID, ExpectedBindingIDs: []string{memberBinding.ID}})
+			results <- replacementResult{binding: binding, err: replaceErr}
+		}()
+	}
+	close(start)
+	var memberOwner access.Binding
+	var successful, conflicted int
+	for range 2 {
+		result := <-results
+		switch {
+		case result.err == nil:
+			successful++
+			memberOwner = result.binding
+		case errors.Is(result.err, access.ErrRoleChangeConflict):
+			conflicted++
+		default:
+			t.Fatalf("concurrent replacement err=%v", result.err)
+		}
+	}
+	if successful != 1 || conflicted != 1 {
+		t.Fatalf("concurrent replacements success=%d conflict=%d", successful, conflicted)
+	}
+	if _, err = accessService.ReplaceOrganizationUserRole(t.Context(), access.OrganizationUserRoleChange{OrganizationID: organization.ID, UserID: member.ID, Role: "viewer", ActorUserID: owner.ID, RequestID: "request-stale", ExpectedBindingIDs: []string{memberBinding.ID}}); !errors.Is(err, access.ErrRoleChangeConflict) {
+		t.Fatalf("stale replacement err=%v", err)
+	}
+	if _, err = accessService.ReplaceOrganizationUserRole(t.Context(), access.OrganizationUserRoleChange{OrganizationID: organization.ID, UserID: member.ID, Role: "owner", ActorUserID: owner.ID, RequestID: "request-unchanged", ExpectedBindingIDs: []string{memberOwner.ID}}); !errors.Is(err, access.ErrRoleUnchanged) {
+		t.Fatalf("unchanged replacement err=%v", err)
+	}
+	ownerViewer, err := accessService.ReplaceOrganizationUserRole(t.Context(), access.OrganizationUserRoleChange{OrganizationID: organization.ID, UserID: owner.ID, Role: "viewer", ActorUserID: member.ID, RequestID: "request-owner-viewer", ExpectedBindingIDs: []string{ownerBinding.ID}})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err = accessService.ReplaceOrganizationUserRole(t.Context(), access.OrganizationUserRoleChange{OrganizationID: organization.ID, UserID: member.ID, Role: "viewer", ActorUserID: member.ID, RequestID: "request-last-owner", ExpectedBindingIDs: []string{memberOwner.ID}}); !errors.Is(err, access.ErrLastOwner) {
+		t.Fatalf("last-owner demotion err=%v", err)
+	}
+	if _, err = accessService.ReplaceOrganizationUserRole(t.Context(), access.OrganizationUserRoleChange{OrganizationID: organization.ID, UserID: owner.ID, Role: "owner", ActorUserID: member.ID, RequestID: "request-restore-owner", ExpectedBindingIDs: []string{ownerViewer.ID}}); err != nil {
+		t.Fatal(err)
+	}
+	if err = organizationService.SetMembershipStatus(t.Context(), organization.ID, member.ID, "suspended", owner.ID, "request-suspend"); err != nil {
+		t.Fatal(err)
+	}
+	members, err = organizationService.Members(t.Context(), organization.ID, 10)
+	if err != nil || len(members) != 2 || !membershipPresent(members, member.ID, "suspended") {
+		t.Fatalf("suspended members=%+v err=%v", members, err)
+	}
+	if _, err = accessService.ReplaceOrganizationUserRole(t.Context(), access.OrganizationUserRoleChange{OrganizationID: organization.ID, UserID: member.ID, Role: "viewer", ActorUserID: owner.ID, RequestID: "request-suspended", ExpectedBindingIDs: []string{memberOwner.ID}}); err == nil {
+		t.Fatal("suspended member role was replaced")
+	}
+	if err = organizationService.SetMembershipStatus(t.Context(), organization.ID, member.ID, "active", owner.ID, "request-reactivate"); err != nil {
+		t.Fatal(err)
+	}
+
+	duplicateAudit := access.AuditEvent{ID: "audit-duplicate-1234", OrganizationID: organization.ID, ActorUserID: owner.ID, Action: "access.role.replace", ResourceType: "user", ResourceID: member.ID, RequestID: "request-rollback", Summary: "Direct organization role replaced", CreatedAt: now}
+	if err = store.AppendAccessAudit(t.Context(), duplicateAudit); err != nil {
+		t.Fatal(err)
+	}
+	replacement := access.Binding{ID: "binding-rollback-1234", SubjectKind: access.User, SubjectID: member.ID, Role: "viewer", Scope: access.Scope{OrganizationID: organization.ID}, GrantedBy: owner.ID, GrantedAt: now}
+	if err = store.ReplaceOrganizationUserRole(t.Context(), []string{memberOwner.ID}, replacement, "owner", duplicateAudit); err == nil {
+		t.Fatal("audit failure did not roll back role replacement")
+	}
+	direct, err = store.OrganizationUserBindings(t.Context(), organization.ID, 10)
+	if err != nil {
+		t.Fatal(err)
+	}
+	var memberRoles []string
+	for _, binding := range direct {
+		if binding.SubjectID == member.ID {
+			memberRoles = append(memberRoles, binding.ID+":"+binding.Role)
+		}
+	}
+	if len(memberRoles) != 1 || memberRoles[0] != memberOwner.ID+":owner" {
+		t.Fatalf("rollback member roles=%v", memberRoles)
+	}
+	assertCount(t, store, `SELECT COUNT(*) FROM gwf_access_bindings WHERE id=?`, replacement.ID, 0)
+}
+
+func TestOptimisticMembershipLifecycleIsSerializedAndAtomic(t *testing.T) {
+	store, err := Open(filepath.Join(t.TempDir(), "accounts.db"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer store.Close()
+	now := time.Date(2026, 9, 4, 9, 0, 0, 0, time.UTC)
+	authService, err := auth.New(store, auth.Options{Now: func() time.Time { return now }})
+	if err != nil {
+		t.Fatal(err)
+	}
+	owner, err := authService.CreateUser(t.Context(), auth.CreateUser{Username: "lifecycle.owner", Email: "lifecycle-owner@example.test", DisplayName: "Lifecycle Owner", Password: "correct horse battery staple"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	member, err := authService.CreateUser(t.Context(), auth.CreateUser{Username: "lifecycle.member", Email: "lifecycle-member@example.test", DisplayName: "Lifecycle Member", Password: "correct horse battery staple"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	organizationService, err := organizations.New(store, organizations.Options{Now: func() time.Time { return now }, OwnerRole: "owner"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	organization, err := organizationService.CreateOrganization(t.Context(), organizations.CreateOrganization{Slug: "optimistic-lifecycle", Name: "Optimistic Lifecycle", OwnerUserID: owner.ID})
+	if err != nil {
+		t.Fatal(err)
+	}
+	policy := access.Policy{Roles: map[string]string{"owner": "Owner", "viewer": "Viewer"}, Permissions: map[string]string{"telemetry.read": "Read"}, Grants: map[string][]string{"owner": {"telemetry.read"}, "viewer": {"telemetry.read"}}}
+	accessService, err := access.New(store, policy, access.Options{Now: func() time.Time { return now }, OwnerRole: "owner"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err = accessService.Seed(t.Context()); err != nil {
+		t.Fatal(err)
+	}
+	if _, err = accessService.Grant(t.Context(), access.Grant{SubjectKind: access.User, SubjectID: owner.ID, Role: "owner", Scope: access.Scope{OrganizationID: organization.ID}, GrantedBy: owner.ID}); err != nil {
+		t.Fatal(err)
+	}
+	team, err := organizationService.CreateTeam(t.Context(), organizations.CreateTeam{OrganizationID: organization.ID, Slug: "operators", Name: "Operators", ActorUserID: owner.ID})
+	if err != nil {
+		t.Fatal(err)
+	}
+	raw, _, err := organizationService.InviteWithAccess(t.Context(), organizations.InviteWithAccess{OrganizationID: organization.ID, Email: member.Email, InvitedByUserID: owner.ID, DirectRole: "viewer", TeamIDs: []string{team.ID}, Lifetime: 24 * time.Hour})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err = organizationService.AcceptInvitation(t.Context(), raw, member.ID); err != nil {
+		t.Fatal(err)
+	}
+
+	start := make(chan struct{})
+	results := make(chan error, 2)
+	for _, requestID := range []string{"request-suspend-one", "request-suspend-two"} {
+		requestID := requestID
+		go func() {
+			<-start
+			results <- organizationService.ChangeMembershipStatus(t.Context(), organizations.MembershipStatusChange{OrganizationID: organization.ID, UserID: member.ID, ExpectedStatus: "active", Status: "suspended", ActorUserID: owner.ID, RequestID: requestID})
+		}()
+	}
+	close(start)
+	var successful, conflicted int
+	for range 2 {
+		switch lifecycleErr := <-results; {
+		case lifecycleErr == nil:
+			successful++
+		case errors.Is(lifecycleErr, organizations.ErrRevisionConflict):
+			conflicted++
+		default:
+			t.Fatalf("concurrent membership suspension err=%v", lifecycleErr)
+		}
+	}
+	if successful != 1 || conflicted != 1 {
+		t.Fatalf("concurrent membership suspension success=%d conflict=%d", successful, conflicted)
+	}
+	assertCount(t, store, `SELECT COUNT(*) FROM gwf_access_audit_events WHERE action='membership.suspended' AND resource_id=?`, member.ID, 1)
+	assertCount(t, store, `SELECT COUNT(*) FROM gwf_team_members WHERE user_id=?`, member.ID, 0)
+	decision, err := accessService.Authorize(t.Context(), member.ID, access.Scope{OrganizationID: organization.ID}, "telemetry.read")
+	if err != nil || decision.Allowed {
+		t.Fatalf("suspended member decision=%+v err=%v", decision, err)
+	}
+	if err = organizationService.RemoveMembershipIfCurrent(t.Context(), organizations.MembershipRemoval{OrganizationID: organization.ID, UserID: member.ID, ExpectedStatus: "active", ActorUserID: owner.ID, RequestID: "request-stale-remove"}); !errors.Is(err, organizations.ErrRevisionConflict) {
+		t.Fatalf("stale membership removal err=%v", err)
+	}
+	assertCount(t, store, `SELECT COUNT(*) FROM gwf_access_audit_events WHERE request_id=?`, "request-stale-remove", 0)
+	assertCount(t, store, `SELECT COUNT(*) FROM gwf_organization_memberships WHERE user_id=?`, member.ID, 1)
+
+	if err = organizationService.ChangeMembershipStatus(t.Context(), organizations.MembershipStatusChange{OrganizationID: organization.ID, UserID: member.ID, ExpectedStatus: "suspended", Status: "active", ActorUserID: owner.ID, RequestID: "request-reactivate"}); err != nil {
+		t.Fatal(err)
+	}
+	assertCount(t, store, `SELECT COUNT(*) FROM gwf_team_members WHERE user_id=?`, member.ID, 0)
+	if err = organizationService.ChangeMembershipStatus(t.Context(), organizations.MembershipStatusChange{OrganizationID: organization.ID, UserID: member.ID, ExpectedStatus: "suspended", Status: "active", ActorUserID: owner.ID, RequestID: "request-stale-reactivate"}); !errors.Is(err, organizations.ErrRevisionConflict) {
+		t.Fatalf("stale membership reactivation err=%v", err)
+	}
+	assertCount(t, store, `SELECT COUNT(*) FROM gwf_access_audit_events WHERE request_id=?`, "request-stale-reactivate", 0)
+
+	if err = organizationService.RemoveMembershipIfCurrent(t.Context(), organizations.MembershipRemoval{OrganizationID: organization.ID, UserID: member.ID, ExpectedStatus: "active", ActorUserID: owner.ID, RequestID: "request-remove-member"}); err != nil {
+		t.Fatal(err)
+	}
+	assertCount(t, store, `SELECT COUNT(*) FROM gwf_organization_memberships WHERE user_id=?`, member.ID, 0)
+	assertCount(t, store, `SELECT COUNT(*) FROM gwf_access_bindings WHERE subject_id=? AND revoked_at IS NOT NULL`, member.ID, 1)
+	assertCount(t, store, `SELECT COUNT(*) FROM gwf_access_audit_events WHERE request_id=?`, "request-remove-member", 1)
+	decision, err = accessService.Authorize(t.Context(), member.ID, access.Scope{OrganizationID: organization.ID}, "telemetry.read")
+	if err != nil || decision.Allowed {
+		t.Fatalf("removed member decision=%+v err=%v", decision, err)
+	}
+}
+
+func membershipPresent(values []organizations.Membership, userID, status string) bool {
+	for _, value := range values {
+		if value.UserID == userID && value.Status == status {
+			return true
+		}
+	}
+	return false
+}

authwebauthn/service.go

@@ -12,8 +12,10 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"net"
 	"net/url"
 	"regexp"
+	"strconv"
 	"strings"
 	"time"
 
@@ -36,9 +38,14 @@ const (
 var accountNamePattern = regexp.MustCompile(`^[A-Za-z0-9][A-Za-z0-9_.-]{2,63}$`)
 
 type Config struct {
-	RPID                    string
+	RPID          string
-	RPDisplayName           string
+	RPDisplayName string
-	Origin                  string
+	Origin        string
+	// AllowDevelopmentPort permits an explicit non-default HTTPS port only
+	// for localhost or a reserved .test relying-party ID. Production origins
+	// remain portless, while local applications can terminate trusted HTTPS
+	// without requiring a privileged listener.
+	AllowDevelopmentPort    bool
 	EnrollmentLifetime      time.Duration
 	RegistrationTTL         time.Duration
 	LoginTTL                time.Duration
@@ -66,7 +73,7 @@ func New(repository Repository, authService *auth.Service, config Config) (*Serv
 	if repository == nil || authService == nil {
 		return nil, errors.New("authwebauthn: repository and auth service are required")
 	}
-	if err := validateOrigin(config.RPID, config.Origin); err != nil {
+	if err := validateOrigin(config.RPID, config.Origin, config.AllowDevelopmentPort); err != nil {
 		return nil, err
 	}
 	if strings.TrimSpace(config.RPDisplayName) == "" || len(config.RPDisplayName) > 80 {
@@ -218,6 +225,23 @@ func (service *Service) BeginAccountRegistration(ctx context.Context, userID, la
 	return service.beginRegistration(ctx, user, label, CeremonyRegistration, BindingDigest(binding), true)
 }
 
+// BeginRecoveryRegistration starts a replacement-passkey ceremony bound to a
+// short-lived recovery grant selected by the application. The grant itself is
+// never persisted in ceremony state; only its digest is retained.
+func (service *Service) BeginRecoveryRegistration(ctx context.Context, userID, label string, binding []byte) (BeginResult, error) {
+	if len(binding) < 16 || len(binding) > 4096 {
+		return BeginResult{}, ErrOperationBinding
+	}
+	user, err := service.repository.UserByID(ctx, strings.TrimSpace(userID))
+	if err != nil {
+		return BeginResult{}, err
+	}
+	if user.RegistrationPending || user.Status != "active" {
+		return BeginResult{}, auth.ErrInactiveUser
+	}
+	return service.beginRegistration(ctx, user, label, CeremonyRegistration, BindingDigest(binding), false)
+}
+
 // BeginPasswordMigration starts registration for an already authenticated
 // password-backed user. Completion atomically retires the password and revokes
 // all sessions, including the session that authorized this ceremony.
@@ -262,7 +286,19 @@ func (service *Service) beginRegistration(ctx context.Context, user auth.User, l
 }
 
 func (service *Service) FinishRegistration(ctx context.Context, ceremonyToken string, response []byte) (Credential, error) {
-	return service.finishRegistration(ctx, ceremonyToken, CeremonyRegistration, [32]byte{}, response, false, false, nil)
+	return service.finishRegistration(ctx, ceremonyToken, CeremonyRegistration, "", [32]byte{}, response, false, false, nil)
+}
+
+// FinishRegistrationForUser verifies an ordinary self-service enrollment only
+// when the ceremony belongs to the authenticated user selected by the
+// application. The ceremony is consumed on mismatch so a leaked token cannot
+// be retried through another account session.
+func (service *Service) FinishRegistrationForUser(ctx context.Context, ceremonyToken, expectedUserID string, response []byte) (Credential, error) {
+	expectedUserID = strings.TrimSpace(expectedUserID)
+	if expectedUserID == "" {
+		return Credential{}, ErrOperationBinding
+	}
+	return service.finishRegistration(ctx, ceremonyToken, CeremonyRegistration, expectedUserID, [32]byte{}, response, false, false, nil)
 }
 
 // FinishAccountRegistration verifies an initial credential and delegates its
@@ -274,7 +310,21 @@ func (service *Service) FinishAccountRegistration(ctx context.Context, ceremonyT
 	if len(binding) < 16 || len(binding) > 4096 || commit == nil {
 		return Credential{}, ErrOperationBinding
 	}
-	return service.finishRegistration(ctx, ceremonyToken, CeremonyRegistration, BindingDigest(binding), response, false, true, commit)
+	return service.finishRegistration(ctx, ceremonyToken, CeremonyRegistration, "", BindingDigest(binding), response, false, true, commit)
+}
+
+// FinishRecoveryRegistration verifies a replacement passkey and delegates its
+// persistence to commit so recovery-grant consumption, credential storage, and
+// recovery-code replacement can share one transaction.
+func (service *Service) FinishRecoveryRegistration(ctx context.Context, ceremonyToken string, binding, response []byte, commit RegistrationCommit) (Credential, error) {
+	if len(binding) < 16 || len(binding) > 4096 || commit == nil {
+		return Credential{}, ErrOperationBinding
+	}
+	return service.finishRegistration(ctx, ceremonyToken, CeremonyRegistration, "", BindingDigest(binding), response, false, false, func(commitContext context.Context, credential Credential, audit auth.AuditEvent) error {
+		audit.Action = "auth.recovery.passkey"
+		audit.Summary = "A replacement passkey was enrolled during account recovery."
+		return commit(commitContext, credential, audit)
+	})
 }
 
 // FinishPasswordMigration verifies the new passkey and persists it together
@@ -287,11 +337,14 @@ func (service *Service) FinishPasswordMigration(ctx context.Context, ceremonyTok
 	return service.finishRegistrationCeremony(ctx, ceremony, passwordMigrationBinding(ceremony.UserID), response, true, false, nil)
 }
 
-func (service *Service) finishRegistration(ctx context.Context, ceremonyToken, kind string, expectedBinding [32]byte, response []byte, retirePassword, allowPending bool, commit RegistrationCommit) (Credential, error) {
+func (service *Service) finishRegistration(ctx context.Context, ceremonyToken, kind, expectedUserID string, expectedBinding [32]byte, response []byte, retirePassword, allowPending bool, commit RegistrationCommit) (Credential, error) {
 	ceremony, err := service.takeCeremony(ctx, ceremonyToken, kind)
 	if err != nil {
 		return Credential{}, err
 	}
+	if expectedUserID != "" && ceremony.UserID != expectedUserID {
+		return Credential{}, ErrOperationBinding
+	}
 	return service.finishRegistrationCeremony(ctx, ceremony, expectedBinding, response, retirePassword, allowPending, commit)
 }
 
@@ -679,12 +732,24 @@ func passwordMigrationBinding(userID string) [32]byte {
 	return BindingDigest([]byte("gamertan-web/password-to-passkey/v1\x00" + userID))
 }
 
-func validateOrigin(rpID, rawOrigin string) error {
+func validateOrigin(rpID, rawOrigin string, allowDevelopmentPort bool) error {
 	if strings.TrimSpace(rpID) == "" || strings.TrimSpace(rawOrigin) == "" {
 		return errors.New("authwebauthn: relying-party ID and origin are required")
 	}
 	origin, err := url.Parse(rawOrigin)
-	if err != nil || origin.Scheme != "https" || origin.Hostname() != rpID || origin.Port() != "" || origin.User != nil || origin.Path != "" || origin.RawQuery != "" || origin.Fragment != "" {
+	if err != nil || origin.Scheme != "https" || origin.Hostname() != rpID || origin.User != nil || origin.Path != "" || origin.RawQuery != "" || origin.Fragment != "" {
+		return errors.New("authwebauthn: origin must be the exact HTTPS relying-party origin")
+	}
+	port := origin.Port()
+	if port == "" {
+		if origin.Host != rpID {
+			return errors.New("authwebauthn: origin must be the exact HTTPS relying-party origin")
+		}
+		return nil
+	}
+	developmentRP := rpID == "localhost" || strings.HasSuffix(rpID, ".test")
+	value, portErr := strconv.ParseUint(port, 10, 16)
+	if !allowDevelopmentPort || !developmentRP || portErr != nil || value == 0 || value == 443 || strconv.FormatUint(value, 10) != port || origin.Host != net.JoinHostPort(rpID, port) {
 		return errors.New("authwebauthn: origin must be the exact HTTPS relying-party origin")
 	}
 	return nil

authwebauthn/service_test.go

@@ -4,6 +4,7 @@ package authwebauthn_test
 
 import (
 	"bytes"
+	"context"
 	"crypto/sha256"
 	"encoding/json"
 	"errors"
@@ -53,6 +54,12 @@ func TestBootstrapEnrollmentAndApprovalPolicy(t *testing.T) {
 	if !begin.ExpiresAt.Equal(now.Add(5 * time.Minute)) {
 		t.Fatalf("registration expiry=%v", begin.ExpiresAt)
 	}
+	if _, err = service.FinishRegistrationForUser(t.Context(), begin.CeremonyToken, "another-user", []byte(`{}`)); !errors.Is(err, authwebauthn.ErrOperationBinding) {
+		t.Fatalf("cross-account registration completion err=%v", err)
+	}
+	if _, err = service.FinishRegistrationForUser(t.Context(), begin.CeremonyToken, user.ID, []byte(`{}`)); !errors.Is(err, authwebauthn.ErrCeremonyNotFound) {
+		t.Fatalf("mismatched completion did not consume ceremony: %v", err)
+	}
 
 	if err = service.RequireReady(t.Context(), user.ID); !errors.Is(err, authwebauthn.ErrPasskeyReadiness) {
 		t.Fatalf("readiness without credentials err=%v", err)
@@ -141,6 +148,30 @@ func TestRecoveryRevokesSessionsAndIssuesSingleUseEnrollment(t *testing.T) {
 	}
 }
 
+func TestRecoveryRegistrationIsBoundAndConsumesMismatchedCeremony(t *testing.T) {
+	now := time.Date(2026, 9, 3, 13, 0, 0, 0, time.UTC)
+	store, authService, service := newService(t, &now, &counterReader{})
+	defer store.Close()
+	user, err := authService.CreateUser(t.Context(), auth.CreateUser{Username: "recover.bound", Email: "recover-bound@example.test", DisplayName: "Recover Bound", Password: "correct horse battery staple"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	binding := bytes.Repeat([]byte("restricted recovery grant "), 2)
+	begin, err := service.BeginRecoveryRegistration(t.Context(), user.ID, "Replacement passkey", binding)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err = service.FinishRecoveryRegistration(t.Context(), begin.CeremonyToken, append([]byte(nil), binding[:len(binding)-1]...), []byte(`{}`), func(context.Context, authwebauthn.Credential, auth.AuditEvent) error { return nil }); !errors.Is(err, authwebauthn.ErrOperationBinding) {
+		t.Fatalf("tampered recovery binding err=%v", err)
+	}
+	if _, err = service.FinishRecoveryRegistration(t.Context(), begin.CeremonyToken, binding, []byte(`{}`), func(context.Context, authwebauthn.Credential, auth.AuditEvent) error { return nil }); !errors.Is(err, authwebauthn.ErrCeremonyNotFound) {
+		t.Fatalf("mismatched completion did not consume recovery ceremony: %v", err)
+	}
+	if _, err = service.BeginRecoveryRegistration(t.Context(), user.ID, "Replacement passkey", []byte("short")); !errors.Is(err, authwebauthn.ErrOperationBinding) {
+		t.Fatalf("short recovery binding err=%v", err)
+	}
+}
+
 func TestPasswordMigrationCeremonyIsBoundAndUnavailableAfterRetirement(t *testing.T) {
 	now := time.Date(2026, 8, 27, 12, 0, 0, 0, time.UTC)
 	store, err := authsqlite.Open(t.TempDir() + "/auth.db")
@@ -200,11 +231,25 @@ func TestConfigurationAndEntropyFailures(t *testing.T) {
 		{RPID: "tend.gamertan.com", RPDisplayName: "Tend", Origin: "http://tend.gamertan.com"},
 		{RPID: "tend.gamertan.com", RPDisplayName: "Tend", Origin: "https://other.gamertan.com"},
 		{RPID: "tend.gamertan.com", RPDisplayName: "Tend", Origin: "https://tend.gamertan.com/path"},
+		{RPID: "localhost", RPDisplayName: "Tend", Origin: "https://localhost:8443"},
+		{RPID: "tend.gamertan.com", RPDisplayName: "Tend", Origin: "https://tend.gamertan.com:8443", AllowDevelopmentPort: true},
+		{RPID: "localhost", RPDisplayName: "Tend", Origin: "https://localhost:443", AllowDevelopmentPort: true},
+		{RPID: "localhost", RPDisplayName: "Tend", Origin: "https://localhost:08443", AllowDevelopmentPort: true},
+		{RPID: "localhost", RPDisplayName: "Tend", Origin: "https://localhost:0", AllowDevelopmentPort: true},
 	} {
 		if _, err = authwebauthn.New(store, authService, config); err == nil {
 			t.Fatalf("accepted config=%+v", config)
 		}
 	}
+	for _, config := range []authwebauthn.Config{
+		{RPID: "localhost", RPDisplayName: "Tend Local", Origin: "https://localhost:8443", AllowDevelopmentPort: true},
+		{RPID: "tend.test", RPDisplayName: "Tend Local", Origin: "https://tend.test:8443", AllowDevelopmentPort: true},
+	} {
+		configured, configureErr := authwebauthn.New(store, authService, config)
+		if configureErr != nil || configured == nil {
+			t.Fatalf("development config=%+v service=%v err=%v", config, configured, configureErr)
+		}
+	}
 	service, err := authwebauthn.New(store, authService, authwebauthn.Config{RPID: "tend.gamertan.com", RPDisplayName: "Tend", Origin: "https://tend.gamertan.com", Random: failingReader{}})
 	if err != nil {
 		t.Fatal(err)

bootstrap/bootstrap.go

@@ -0,0 +1,174 @@
+// SPDX-License-Identifier: MPL-2.0
+
+// Package bootstrap creates the first application owner and non-personal
+// organization as one storage transaction. It is intended for a root-local
+// operator command, not for public registration or a network administration
+// endpoint.
+package bootstrap
+
+import (
+	"context"
+	"crypto/rand"
+	"crypto/sha256"
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"io"
+	"net/mail"
+	"regexp"
+	"strings"
+	"time"
+
+	"gamertan.com/web/access"
+	"gamertan.com/web/auth"
+	"gamertan.com/web/authwebauthn"
+	"gamertan.com/web/organizations"
+)
+
+const defaultEnrollmentLifetime = 15 * time.Minute
+
+var (
+	identifierPattern = regexp.MustCompile(`^[A-Za-z0-9][A-Za-z0-9_.-]{2,63}$`)
+	slugPattern       = regexp.MustCompile(`^[a-z0-9][a-z0-9-]{1,62}$`)
+	rolePattern       = regexp.MustCompile(`^[a-z][a-z0-9._-]{1,127}$`)
+)
+
+// Input is the reviewed, non-secret identity and organization metadata from a
+// local operator command.
+type Input struct {
+	Username         string
+	Email            string
+	DisplayName      string
+	OrganizationSlug string
+	OrganizationName string
+}
+
+// Setup is the complete secret-free state a repository must commit atomically.
+// Enrollment contains only a digest; the raw token remains in the Result.
+type Setup struct {
+	User              auth.User
+	Enrollment        authwebauthn.EnrollmentToken
+	Organization      organizations.Organization
+	Membership        organizations.Membership
+	OwnerBinding      access.Binding
+	AuthAudit         auth.AuditEvent
+	OrganizationAudit organizations.AuditEvent
+	AccessAudit       access.AuditEvent
+}
+
+// Result contains the created public records and the one-time enrollment
+// secret. Applications must deliver EnrollmentToken through a private channel
+// and must never log it.
+type Result struct {
+	User            auth.User
+	Organization    organizations.Organization
+	EnrollmentToken string
+	ExpiresAt       time.Time
+}
+
+// Repository owns the single transaction spanning identity, enrollment,
+// organization membership, owner access, and their audit events.
+type Repository interface {
+	CreateInitialOwner(context.Context, Setup) error
+}
+
+type Options struct {
+	OwnerRole          string
+	EnrollmentLifetime time.Duration
+	Random             io.Reader
+	Now                func() time.Time
+}
+
+type Service struct {
+	repository         Repository
+	ownerRole          string
+	enrollmentLifetime time.Duration
+	random             io.Reader
+	now                func() time.Time
+}
+
+func New(repository Repository, options Options) (*Service, error) {
+	if repository == nil {
+		return nil, errors.New("bootstrap: repository is required")
+	}
+	if !rolePattern.MatchString(options.OwnerRole) {
+		return nil, errors.New("bootstrap: owner role is invalid")
+	}
+	if options.EnrollmentLifetime == 0 {
+		options.EnrollmentLifetime = defaultEnrollmentLifetime
+	}
+	if options.EnrollmentLifetime < time.Minute || options.EnrollmentLifetime > time.Hour {
+		return nil, errors.New("bootstrap: enrollment lifetime is invalid")
+	}
+	if options.Random == nil {
+		options.Random = rand.Reader
+	}
+	if options.Now == nil {
+		options.Now = time.Now
+	}
+	return &Service{repository: repository, ownerRole: options.OwnerRole, enrollmentLifetime: options.EnrollmentLifetime, random: options.Random, now: options.Now}, nil
+}
+
+// Start atomically creates one active passkey-only owner, one active
+// non-personal organization, direct owner access, and a single-use enrollment
+// token. It does not create a session or expose a network bootstrap surface.
+func (service *Service) Start(ctx context.Context, input Input) (Result, error) {
+	input.Username = strings.TrimSpace(input.Username)
+	input.Email = strings.ToLower(strings.TrimSpace(input.Email))
+	input.DisplayName = strings.TrimSpace(input.DisplayName)
+	input.OrganizationSlug = strings.ToLower(strings.TrimSpace(input.OrganizationSlug))
+	input.OrganizationName = strings.TrimSpace(input.OrganizationName)
+	if !identifierPattern.MatchString(input.Username) || !canonicalEmail(input.Email) || !bounded(input.DisplayName, 128) || !slugPattern.MatchString(input.OrganizationSlug) || !bounded(input.OrganizationName, 128) {
+		return Result{}, errors.New("bootstrap: invalid owner or organization")
+	}
+	values, err := service.randomValues(7)
+	if err != nil {
+		return Result{}, err
+	}
+	now := service.now().UTC()
+	userID, organizationID, bindingID := values[0], values[1], values[2]
+	rawToken := values[3]
+	user := auth.User{ID: userID, Username: input.Username, Email: input.Email, DisplayName: input.DisplayName, Status: "active", CreatedAt: now, UpdatedAt: now}
+	organization := organizations.Organization{ID: organizationID, Slug: input.OrganizationSlug, Name: input.OrganizationName, Status: "active", Revision: 1, CreatedAt: now, UpdatedAt: now}
+	enrollment := authwebauthn.EnrollmentToken{Digest: sha256.Sum256([]byte(rawToken)), UserID: userID, CreatedAt: now, ExpiresAt: now.Add(service.enrollmentLifetime)}
+	membership := organizations.Membership{OrganizationID: organizationID, UserID: userID, Status: "active", JoinedAt: now}
+	binding := access.Binding{ID: bindingID, SubjectKind: access.User, SubjectID: userID, Role: service.ownerRole, Scope: access.Scope{OrganizationID: organizationID}, GrantedBy: userID, GrantedAt: now}
+	setup := Setup{
+		User:              user,
+		Enrollment:        enrollment,
+		Organization:      organization,
+		Membership:        membership,
+		OwnerBinding:      binding,
+		AuthAudit:         auth.AuditEvent{ID: values[4], ActorUserID: userID, Action: "auth.passkey.bootstrap", ResourceType: "user", ResourceID: userID, Summary: "A local operator created the initial passkey-only owner and one-time enrollment token.", CreatedAt: now},
+		OrganizationAudit: organizations.AuditEvent{ID: values[5], OrganizationID: organizationID, ActorUserID: userID, Action: "organization.bootstrap", ResourceType: "organization", ResourceID: organizationID, Summary: "A local operator created the initial organization.", CreatedAt: now},
+		AccessAudit:       access.AuditEvent{ID: values[6], OrganizationID: organizationID, ActorUserID: userID, Action: "access.binding.grant", ResourceType: "binding", ResourceID: bindingID, Summary: "The initial owner received direct organization access.", CreatedAt: now},
+	}
+	if err = service.repository.CreateInitialOwner(ctx, setup); err != nil {
+		return Result{}, err
+	}
+	return Result{User: user, Organization: organization, EnrollmentToken: rawToken, ExpiresAt: enrollment.ExpiresAt}, nil
+}
+
+func (service *Service) randomValues(count int) ([]string, error) {
+	values := make([]string, count)
+	for index := range values {
+		bytes := make([]byte, 24)
+		if _, err := io.ReadFull(service.random, bytes); err != nil {
+			return nil, fmt.Errorf("bootstrap: secure randomness unavailable: %w", err)
+		}
+		values[index] = base64.RawURLEncoding.EncodeToString(bytes)
+	}
+	return values, nil
+}
+
+func canonicalEmail(value string) bool {
+	if value == "" || len(value) > 320 || strings.ContainsAny(value, "\x00\r\n") {
+		return false
+	}
+	address, err := mail.ParseAddress(value)
+	return err == nil && address.Name == "" && address.Address == value
+}
+
+func bounded(value string, maximum int) bool {
+	return value != "" && len(value) <= maximum && !strings.ContainsAny(value, "\x00\r\n")
+}

bootstrap/bootstrap_test.go

@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: MPL-2.0
+
+package bootstrap
+
+import (
+	"context"
+	"errors"
+	"testing"
+	"time"
+)
+
+type recordingRepository struct {
+	setup Setup
+	err   error
+}
+
+func (repository *recordingRepository) CreateInitialOwner(_ context.Context, setup Setup) error {
+	repository.setup = setup
+	return repository.err
+}
+
+func TestStartBuildsAtomicInitialOwnerSetup(t *testing.T) {
+	repository := new(recordingRepository)
+	now := time.Date(2026, 9, 3, 18, 0, 0, 0, time.UTC)
+	service, err := New(repository, Options{OwnerRole: "home.owner", Now: func() time.Time { return now }})
+	if err != nil {
+		t.Fatal(err)
+	}
+	result, err := service.Start(t.Context(), Input{Username: "cole.owner", Email: "COLE@EXAMPLE.TEST", DisplayName: "Cole Speelman", OrganizationSlug: "Gamertan", OrganizationName: "Gamertan"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	setup := repository.setup
+	if result.EnrollmentToken == "" || setup.Enrollment.Digest == [32]byte{} || result.User.Email != "cole@example.test" || result.Organization.Personal || result.Organization.Status != "active" {
+		t.Fatalf("result=%+v setup=%+v", result, setup)
+	}
+	if setup.Membership.UserID != result.User.ID || setup.Membership.OrganizationID != result.Organization.ID || setup.OwnerBinding.Role != "home.owner" || setup.OwnerBinding.GrantedBy != result.User.ID {
+		t.Fatalf("membership=%+v binding=%+v", setup.Membership, setup.OwnerBinding)
+	}
+	if setup.AuthAudit.ID == setup.OrganizationAudit.ID || setup.OrganizationAudit.ID == setup.AccessAudit.ID || setup.AuthAudit.Summary == "" || setup.AccessAudit.ResourceID != setup.OwnerBinding.ID {
+		t.Fatalf("audits=%+v %+v %+v", setup.AuthAudit, setup.OrganizationAudit, setup.AccessAudit)
+	}
+	if !result.ExpiresAt.Equal(now.Add(15 * time.Minute)) {
+		t.Fatalf("expires=%v", result.ExpiresAt)
+	}
+}
+
+func TestStartRejectsUnsafeInputAndDoesNotCommit(t *testing.T) {
+	repository := new(recordingRepository)
+	service, err := New(repository, Options{OwnerRole: "home.owner"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, input := range []Input{
+		{Username: "x", Email: "owner@example.test", DisplayName: "Owner", OrganizationSlug: "gamertan", OrganizationName: "Gamertan"},
+		{Username: "owner.user", Email: "Owner <owner@example.test>", DisplayName: "Owner", OrganizationSlug: "gamertan", OrganizationName: "Gamertan"},
+		{Username: "owner.user", Email: "owner@example.test", DisplayName: "Owner", OrganizationSlug: "bad/slug", OrganizationName: "Gamertan"},
+	} {
+		if _, startErr := service.Start(t.Context(), input); startErr == nil {
+			t.Fatalf("unsafe input accepted: %+v", input)
+		}
+	}
+	if repository.setup.User.ID != "" {
+		t.Fatal("repository was called for rejected input")
+	}
+}
+
+func TestStartDoesNotReturnSecretAfterRepositoryFailure(t *testing.T) {
+	repository := &recordingRepository{err: errors.New("commit failed")}
+	service, err := New(repository, Options{OwnerRole: "home.owner"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	result, err := service.Start(t.Context(), Input{Username: "owner.user", Email: "owner@example.test", DisplayName: "Owner", OrganizationSlug: "gamertan", OrganizationName: "Gamertan"})
+	if err == nil || result.EnrollmentToken != "" {
+		t.Fatalf("result=%+v err=%v", result, err)
+	}
+}

docs/DOGFOOD.md

@@ -34,3 +34,42 @@ application concern belongs in the shared module.
   explicit operator command.
 - Commerce remains a separately versioned nested module so payment-provider
   policy and catalog evolution do not enlarge the authentication core.
+- Self-service enrollment exposed an authorization seam: completing a valid
+  ceremony and checking its user only after persistence is too late.
+  `FinishRegistrationForUser` now consumes mismatched ceremonies and checks
+  the application-authenticated user before storing a credential.
+- First-owner provisioning exposed another cross-package transaction boundary.
+  `bootstrap` now commits the passkey-only user, enrollment digest,
+  non-personal organization, membership, direct owner binding, and audits
+  together. Applications must seed their owner role first and must write the
+  returned raw token only to a newly created private file.
+- Recovery-code consumption alone is not a complete recovery path. The
+  restricted grant must survive an interrupted authenticator prompt yet be
+  consumed in the same transaction that stores the verified replacement
+  passkey and replacement code digests. `authrecovery.BeginPasskey` and
+  `FinishPasskey` now provide that boundary without creating an authenticated
+  session; Gamertan keeps the raw grant only in a short-lived HttpOnly cookie.
+- A portless-only WebAuthn origin rule made an unprivileged local HTTPS
+  exercise impossible even though WebAuthn origins include ports. The passkey
+  service now permits an explicit development port only when applications opt
+  in and the RP ID is `localhost` or reserved `.test`; production origins keep
+  the original portless default.
+- Gamertan's staff-access page exposed a dangerous composition gap between
+  individual grant/revoke calls. Foundations now owns one optimistic,
+  transactional direct-role replacement that preserves the final active
+  owner and appends its audit before commit. The application still owns route
+  authorization, role presentation, CSRF, and the exact fresh-passkey
+  operation binding.
+- Extending that page to membership suspension, reactivation, and removal
+  exposed the same time-of-check gap in the older lifecycle methods. The new
+  optimistic extension serializes on the active administrator membership,
+  rechecks the exact state bound into the passkey assertion, applies team and
+  direct-binding consequences, and writes the audit in one transaction.
+- Human-assisted recovery cannot safely be expressed as a root command behind
+  an HTTP button. Preview 18 adds a distinct owner-assisted protocol: the
+  application performs the human review and fresh operation-bound passkey
+  ceremony, while the SQLite transaction rechecks an active direct owner,
+  invalidates every old account authenticator, stores only the grant digest,
+  and writes identity plus organization audits. Grant completion installs the
+  replacement password, passkey, and recovery-code set atomically and never
+  issues a session.

docs/GETTING_STARTED.md

@@ -19,13 +19,14 @@ install an imagined framework lifecycle around it.
 | SQLite persistence for `auth` | `authsqlite` | Database placement, backup, migration approval, and recovery |
 | One account across organizations and teams | `organizations`, `authsqlite` | Invitation UX, organization naming, and lifecycle policy |
 | Organization-scoped authorization | `access`, `authsqlite` | Role definitions, resource ownership, and route enforcement |
+| First passkey-only owner and home organization | `bootstrap`, `authsqlite` | Root-local command, private token file, enrollment page, and owner-role policy |
 | Aggregate projections over request records | `analytics` | Collection policy, access control, report UI, and retention |
 
 The packages are ordinary Go imports. Pin the current preview and verify its
 module checksum:
 
 ```bash
-go get gamertan.com/web/requestmeta@v0.1.0-preview.10
+go get gamertan.com/web/requestmeta@v0.1.0-preview.18
 go mod verify
 ```
 
@@ -61,6 +62,17 @@ quietly changing identity or policy.
 
 ## Bootstrap an account without inventing a permanent password
 
+For the first application owner, prefer `bootstrap.Start`. After explicitly
+seeding the application's access policy, it creates the active passkey-only
+user, non-personal home organization, membership, direct owner binding,
+enrollment digest, and audit events in one repository transaction. A missing
+owner role or duplicate identity rolls back every row. The application-owned
+root-local command writes the returned raw enrollment token once to an
+exclusive mode-`0600` file and must never print or log it.
+
+For applications that still require a temporary password bootstrap,
+`auth.GenerateTemporaryPassword` remains available:
+
 `auth.GenerateTemporaryPassword` returns 256 bits of URL-safe cryptographic
 entropy. An application can store that value in a newly created private file
 and provision an account with `RequirePasswordChange: true`. The library does

docs/MODULES.md

@@ -18,7 +18,7 @@ import "gamertan.com/web/requestmeta"
 and request the containing module at an exact version:
 
 ```bash
-go get gamertan.com/web/requestmeta@v0.1.0-preview.10
+go get gamertan.com/web/requestmeta@v0.1.0-preview.18
 ```
 
 Only imported packages are compiled and linked. The packages nevertheless

docs/ORGANIZATIONS.md

@@ -22,6 +22,27 @@ team membership can be removed independently. Configure `OwnerRole` when
 constructing the service before exposing membership-removal operations. The
 SQLite adapter then refuses to suspend or remove the final active direct owner.
 
+Fresh-authentication administration pages should use
+`ChangeMembershipStatus` and `RemoveMembershipIfCurrent`, passing the exact
+displayed state as `ExpectedStatus`. The SQLite adapter acquires its write lock
+before checking that state, verifies the actor is still an active member of an
+active organization, and commits the lifecycle effects and audit together.
+Suspension removes team memberships; reactivation does not infer or restore
+them. Removal also revokes current direct bindings. A repository without the
+optimistic extension fails closed instead of falling back to a stale mutation.
+
+For a reviewed access-administration page, use `organizations.Members` to list
+bounded active and suspended memberships, and
+`access.OrganizationUserBindings` to list only current direct,
+organization-wide user roles. The latter intentionally excludes team grants
+and project, environment, or service bindings. Replace a member's direct role
+with `access.ReplaceOrganizationUserRole`, passing the exact displayed binding
+IDs as `ExpectedBindingIDs`. The SQLite adapter serializes that replacement,
+rejects stale state, writes the new binding and audit event atomically, and
+will not demote the final active direct owner. The application must still
+authorize the administrator and bind any required fresh passkey assertion to
+the organization, target user, target role, and expected IDs.
+
 `access.Service` evaluates a permission against a complete resource scope:
 
 ```go
@@ -43,6 +64,15 @@ grant organization-data access. If an operator must inspect tenant data during
 an incident, use a reasoned break-glass grant. It expires within one hour and
 creates an append-only audit event in the same transaction.
 
+An application that offers owner-assisted account recovery must not infer that
+authority from a broad administration page. Use the dedicated
+`authrecovery.IssueAssistedRecovery` boundary after an operation-bound passkey
+assertion. The SQLite adapter requires a current active direct owner binding
+and active target membership in the same transaction that invalidates the old
+credentials and records the organization-visible recovery audit. Team,
+break-glass, platform, and merely descriptive roles do not satisfy this owner
+check.
+
 The SQLite adapter namespaces all tables, enforces active organization and team
 membership plus resource ancestry before accepting or evaluating a binding,
 and keeps invitations and sessions as digests. Applications remain responsible

docs/PASSKEYS.md

@@ -9,6 +9,11 @@ authorization decisions, session cookie, HTML, and local recovery command.
 ## Fixed security policy
 
 - Use an exact HTTPS origin whose hostname equals the relying-party ID.
+- Keep production origins portless. For local development only,
+  `AllowDevelopmentPort` permits one explicit non-default port when the RP ID
+  is exactly `localhost` or beneath the reserved `.test` top-level domain. The
+  configured origin, browser `Origin`, and WebAuthn verifier origin must still
+  match exactly.
 - Reject cross-origin ceremonies.
 - Require discoverable credentials and user verification.
 - Request no attestation conveyance.
@@ -26,12 +31,17 @@ timestamp, UUID, or counter for the random challenge.
 
 ## Application flow
 
-1. A local command calls `Bootstrap` or `Recover` and writes the returned
+1. A local command calls `authwebauthn.Bootstrap`, `authwebauthn.Recover`, or
-   enrollment token once to a newly created mode-`0600` file.
+   `bootstrap.Start` and writes the returned enrollment token once to a newly
+   created mode-`0600` file. Use `bootstrap.Start` for the first application
+   owner so identity, organization membership, direct owner access, and audits
+   cannot be partially committed.
 2. A server-rendered enrollment page calls `BeginEnrollment`; the browser uses
    `navigator.credentials.create` with the returned `public_key` value.
 3. The browser posts the credential and opaque ceremony token to a bounded JSON
-   endpoint; `FinishRegistration` verifies and stores the public credential.
+   endpoint; authenticated self-service flows use
+   `FinishRegistrationForUser` so the application session's user ID is checked
+   before any public credential is stored.
 4. Login uses `BeginLogin`, `navigator.credentials.get`, and `FinishLogin`.
    The successful result contains an ordinary opaque `auth` session token.
 5. Sensitive operations call `BeginApproval` with a canonical application
@@ -51,13 +61,46 @@ JavaScript, or set sessions automatically.
 
 ## Recovery and credential lifecycle
 
-Recovery is deliberately host-local and should never be reachable through an
+Administrator-assisted `authwebauthn.Recover` is deliberately host-local and
-HTTP handler. It revokes all user sessions and pending ceremonies, replaces
+must never be reachable through an HTTP handler. It revokes all user sessions
-prior enrollment tokens, appends a secret-free audit event, and returns one
+and pending ceremonies, replaces prior enrollment tokens, appends a
-15-minute token. It does not delete existing passkeys. After enrolling a
+secret-free audit event, and returns one 15-minute token. It does not delete
-replacement, the operator reviews credential labels and removes lost keys with
+existing passkeys. After enrolling a replacement, the operator reviews
-a fresh passkey-bound removal ceremony. The final passkey cannot be removed
+credential labels and removes lost keys with a fresh passkey-bound removal
-remotely.
+ceremony. The final passkey cannot be removed remotely.
+
+An account may separately expose self-service password-plus-recovery-code
+recovery through `authrecovery`. `Begin` verifies the password, consumes one
+printable code, revokes sessions, and returns a short-lived grant—not a normal
+session. Keep that grant in a narrowly scoped, Secure, HttpOnly, SameSite cookie
+and never place it in a URL. `BeginPasskey` binds its digest into the WebAuthn
+ceremony. `FinishPasskey` atomically consumes the grant, stores the verified
+replacement passkey, replaces the entire recovery-code set, revokes any
+sessions or ceremonies created during recovery, and returns the new plaintext
+codes exactly once. It does not issue a session; return the user to normal
+login after displaying and saving the new codes.
+
+A failed storage commit leaves the restricted grant available for a fresh
+ceremony until expiry. A binding mismatch consumes the mismatched ceremony.
+Applications must use generic failure responses and the same credential-attempt
+rate limiting as login.
+
+Owner-assisted recovery is a third, deliberately separate path. Configure
+`authrecovery.Options.OwnerRole`, authorize an active direct organization owner,
+and bind that owner's fresh passkey assertion to the exact organization,
+target user, request identifier, and bounded human-review reason before calling
+`IssueAssistedRecovery`. The SQLite transaction rechecks the active direct
+owner and target membership, invalidates the target's password, passkeys,
+recovery codes, sessions, and pending ceremonies, then stores only a digest of
+the 15-minute grant with identity and organization-visible audits.
+
+Deliver the returned grant exactly once in a URL fragment. A public recovery
+page can pass it to `BeginAssistedPasskey` and `FinishAssistedRecovery` while
+keeping it out of request URLs, referrers, and access logs. Completion consumes
+the grant atomically with one replacement password, passkey, recovery-code set,
+and both audit trails. It issues no session. Losing the fragment after issuance
+requires another reviewed owner or root-local recovery; old authenticators
+must not become valid again as a fallback.
 
 Before enabling production mutations, applications should require at least two
 independent passkeys and complete a local recovery drill.

media/media.go

@@ -20,6 +20,7 @@ import (
 	"mime"
 	"net/http"
 	"path/filepath"
+	"strconv"
 	"strings"
 	"time"
 	"unicode/utf8"
@@ -121,7 +122,7 @@ func Prepare(reader io.Reader, originalName string, limits Limits) (Prepared, er
 	}
 
 	detected := http.DetectContentType(data)
-	if detected == "application/pdf" && bytes.HasPrefix(data, []byte("%PDF-")) {
+	if detected == "application/pdf" && validPDF(data) {
 		result := Prepared{Data: append([]byte(nil), data...), MediaType: "application/pdf", Kind: KindAttachment, OriginalName: name}
 		result.Digest = sha256.Sum256(result.Data)
 		return result, nil
@@ -156,6 +157,61 @@ func Prepare(reader io.Reader, originalName string, limits Limits) (Prepared, er
 	return result, nil
 }
 
+// validPDF performs a deliberately bounded structural check without trying to
+// render or interpret document content. It rejects header-only spoofing and
+// truncated uploads by requiring a supported header, terminal EOF marker, a
+// numeric startxref offset, and either a traditional xref table with trailer
+// or an xref-stream object at that offset.
+func validPDF(data []byte) bool {
+	if len(data) < 32 || !bytes.HasPrefix(data, []byte("%PDF-")) {
+		return false
+	}
+	headerEnd := bytes.IndexAny(data, "\r\n")
+	if headerEnd < 8 || headerEnd > 32 {
+		return false
+	}
+	header := string(bytes.TrimSpace(data[:headerEnd]))
+	if header != "%PDF-1.0" && header != "%PDF-1.1" && header != "%PDF-1.2" && header != "%PDF-1.3" && header != "%PDF-1.4" && header != "%PDF-1.5" && header != "%PDF-1.6" && header != "%PDF-1.7" && header != "%PDF-2.0" {
+		return false
+	}
+	trimmed := bytes.TrimRight(data, "\x00\t\n\f\r ")
+	if !bytes.HasSuffix(trimmed, []byte("%%EOF")) {
+		return false
+	}
+	eof := len(trimmed) - len("%%EOF")
+	start := bytes.LastIndex(trimmed[:eof], []byte("startxref"))
+	if start < headerEnd {
+		return false
+	}
+	cursor := start + len("startxref")
+	for cursor < eof && (trimmed[cursor] == ' ' || trimmed[cursor] == '\t' || trimmed[cursor] == '\r' || trimmed[cursor] == '\n' || trimmed[cursor] == '\f') {
+		cursor++
+	}
+	digits := cursor
+	for cursor < eof && trimmed[cursor] >= '0' && trimmed[cursor] <= '9' && cursor-digits < 20 {
+		cursor++
+	}
+	if cursor == digits {
+		return false
+	}
+	if len(bytes.TrimSpace(trimmed[cursor:eof])) != 0 {
+		return false
+	}
+	offset, err := strconv.ParseInt(string(trimmed[digits:cursor]), 10, 64)
+	if err != nil || offset < int64(headerEnd+1) || offset >= int64(start) {
+		return false
+	}
+	target := trimmed[int(offset):start]
+	if bytes.HasPrefix(target, []byte("xref")) {
+		return bytes.Contains(target, []byte("trailer"))
+	}
+	lineEnd := bytes.IndexByte(target, '\n')
+	if lineEnd < 5 || lineEnd > 80 || !bytes.Contains(target[:lineEnd], []byte(" obj")) {
+		return false
+	}
+	return bytes.Contains(target, []byte("/Type /XRef")) || bytes.Contains(target, []byte("/Type/XRef"))
+}
+
 func Extension(mediaType string) string {
 	switch mediaType {
 	case "image/jpeg":

media/media_test.go

@@ -5,6 +5,7 @@ package media
 import (
 	"bytes"
 	"errors"
+	"fmt"
 	"image"
 	"image/color"
 	"image/jpeg"
@@ -33,7 +34,8 @@ func TestPrepareReencodesRasterAndStripsTrailingData(t *testing.T) {
 }
 
 func TestPreparePDFIsAttachment(t *testing.T) {
-	prepared, err := Prepare(strings.NewReader("%PDF-1.7\nsmall fixture"), "guide.pdf", Limits{})
+	pdf := minimalPDF()
+	prepared, err := Prepare(bytes.NewReader(pdf), "guide.pdf", Limits{})
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -42,6 +44,18 @@ func TestPreparePDFIsAttachment(t *testing.T) {
 	}
 }
 
+func TestPrepareRejectsMalformedPDF(t *testing.T) {
+	for _, source := range []string{
+		"%PDF-1.7\nsmall fixture",
+		"%PDF-9.9\nxref\ntrailer\nstartxref\n9\n%%EOF",
+		"%PDF-1.7\nxref\ntrailer\nstartxref\n999999\n%%EOF",
+	} {
+		if _, err := Prepare(strings.NewReader(source), "broken.pdf", Limits{}); !errors.Is(err, ErrInvalidMedia) {
+			t.Fatalf("malformed PDF error=%v source=%q", err, source)
+		}
+	}
+}
+
 func TestPrepareRejectsActiveAndOversizedInput(t *testing.T) {
 	if _, err := Prepare(strings.NewReader("<svg><script/></svg>"), "bad.svg", Limits{}); !errors.Is(err, ErrInvalidMedia) {
 		t.Fatalf("svg err=%v", err)
@@ -50,3 +64,9 @@ func TestPrepareRejectsActiveAndOversizedInput(t *testing.T) {
 		t.Fatalf("large err=%v", err)
 	}
 }
+
+func minimalPDF() []byte {
+	prefix := []byte("%PDF-1.7\n1 0 obj\n<< /Type /Catalog >>\nendobj\n")
+	offset := len(prefix)
+	return append(prefix, []byte(fmt.Sprintf("xref\n0 2\n0000000000 65535 f \n0000000009 00000 n \ntrailer\n<< /Size 2 /Root 1 0 R >>\nstartxref\n%d\n%%%%EOF\n", offset))...)
+}

medialocal/store_test.go

@@ -5,6 +5,7 @@ package medialocal
 import (
 	"bytes"
 	"errors"
+	"fmt"
 	"io"
 	"os"
 	"path/filepath"
@@ -20,7 +21,9 @@ func TestStoreRoundTripAndIdempotentPut(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	prepared, err := media.Prepare(bytes.NewReader([]byte("%PDF-1.7\nfixture")), "fixture.pdf", media.Limits{})
+	prefix := []byte("%PDF-1.7\n1 0 obj\n<< /Type /Catalog >>\nendobj\n")
+	pdf := append(prefix, []byte(fmt.Sprintf("xref\n0 2\n0000000000 65535 f \n0000000009 00000 n \ntrailer\n<< /Size 2 /Root 1 0 R >>\nstartxref\n%d\n%%%%EOF\n", len(prefix)))...)
+	prepared, err := media.Prepare(bytes.NewReader(pdf), "fixture.pdf", media.Limits{})
 	if err != nil {
 		t.Fatal(err)
 	}

organizations/organizations.go

@@ -19,15 +19,16 @@ import (
 )
 
 var (
-	ErrInvitationNotFound   = errors.New("organizations: invitation not found")
+	ErrInvitationNotFound             = errors.New("organizations: invitation not found")
-	ErrMembershipNotFound   = errors.New("organizations: membership not found")
+	ErrMembershipNotFound             = errors.New("organizations: membership not found")
-	ErrOrganizationNotFound = errors.New("organizations: organization not found")
+	ErrMembershipLifecycleUnsupported = errors.New("organizations: optimistic membership lifecycle is unsupported")
-	ErrTeamNotFound         = errors.New("organizations: team not found")
+	ErrOrganizationNotFound           = errors.New("organizations: organization not found")
-	ErrRevisionConflict     = errors.New("organizations: revision conflict")
+	ErrTeamNotFound                   = errors.New("organizations: team not found")
-	ErrPersonalOrganization = errors.New("organizations: personal organization lifecycle is fixed")
+	ErrRevisionConflict               = errors.New("organizations: revision conflict")
-	ErrLastOwner            = errors.New("organizations: the last active direct owner must be preserved")
+	ErrPersonalOrganization           = errors.New("organizations: personal organization lifecycle is fixed")
-	slugPattern             = regexp.MustCompile(`^[a-z0-9][a-z0-9-]{1,62}$`)
+	ErrLastOwner                      = errors.New("organizations: the last active direct owner must be preserved")
-	idPattern               = regexp.MustCompile(`^[A-Za-z0-9_-]{8,128}$`)
+	slugPattern                       = regexp.MustCompile(`^[a-z0-9][a-z0-9-]{1,62}$`)
+	idPattern                         = regexp.MustCompile(`^[A-Za-z0-9_-]{8,128}$`)
 )
 
 type Organization struct {
@@ -107,10 +108,21 @@ type Repository interface {
 	Invitations(context.Context, string, int) ([]Invitation, error)
 	RevokeInvitation(context.Context, string, string, time.Time, AuditEvent) error
 	AcceptInvitation(context.Context, [32]byte, string, time.Time, AuditEvent) error
+	OrganizationMemberships(context.Context, string, int) ([]Membership, error)
 	MembershipsForUser(context.Context, string) ([]Membership, error)
 	TeamsForUser(context.Context, string, string) ([]Team, error)
 }
 
+// OptimisticMembershipRepository is implemented by repositories that can
+// bind a membership lifecycle mutation to the exact state authorized by the
+// caller. Services deliberately do not fall back to the older lifecycle
+// methods: a stale fresh-authentication ceremony must fail instead of acting
+// on a membership that changed while the ceremony was in progress.
+type OptimisticMembershipRepository interface {
+	ChangeMembershipStatus(context.Context, MembershipStatusChange, string, AuditEvent) error
+	RemoveMembershipIfCurrent(context.Context, MembershipRemoval, string, AuditEvent) error
+}
+
 type Options struct {
 	Random    io.Reader
 	Now       func() time.Time
@@ -331,6 +343,16 @@ func (service *Service) Memberships(ctx context.Context, userID string) ([]Membe
 	return service.repository.MembershipsForUser(ctx, userID)
 }
 
+// Members returns a bounded, stable list of active and suspended memberships
+// for one organization. Authorization remains an application concern because
+// the same storage primitive serves different organization policies.
+func (service *Service) Members(ctx context.Context, organizationID string, limit int) ([]Membership, error) {
+	if !idPattern.MatchString(organizationID) || limit < 1 || limit > 2000 {
+		return nil, errors.New("organizations: invalid member query")
+	}
+	return service.repository.OrganizationMemberships(ctx, organizationID, limit)
+}
+
 func (service *Service) Teams(ctx context.Context, organizationID, userID string) ([]Team, error) {
 	if !idPattern.MatchString(organizationID) || !idPattern.MatchString(userID) {
 		return nil, errors.New("organizations: invalid team query")
@@ -453,6 +475,34 @@ func (service *Service) SetMembershipStatus(ctx context.Context, organizationID,
 	return service.repository.SetMembershipStatus(ctx, organizationID, userID, status, service.ownerRole, audit)
 }
 
+// MembershipStatusChange describes an exact active-to-suspended or
+// suspended-to-active transition. ExpectedStatus is part of the authorized
+// operation and is checked again inside the repository transaction.
+type MembershipStatusChange struct {
+	OrganizationID, UserID, ExpectedStatus, Status, ActorUserID, RequestID string
+}
+
+func (service *Service) ChangeMembershipStatus(ctx context.Context, input MembershipStatusChange) error {
+	if !idPattern.MatchString(input.OrganizationID) || !idPattern.MatchString(input.UserID) || !idPattern.MatchString(input.ActorUserID) ||
+		(input.ExpectedStatus != "active" && input.ExpectedStatus != "suspended") ||
+		(input.Status != "active" && input.Status != "suspended") || input.Status == input.ExpectedStatus ||
+		!boundedOptional(input.RequestID, 128) {
+		return errors.New("organizations: invalid membership status change")
+	}
+	if service.ownerRole == "" {
+		return errors.New("organizations: owner role is required for membership lifecycle changes")
+	}
+	repository, ok := service.repository.(OptimisticMembershipRepository)
+	if !ok {
+		return ErrMembershipLifecycleUnsupported
+	}
+	audit, err := service.auditWithRequest(input.ActorUserID, input.OrganizationID, "membership."+input.Status, "membership", input.UserID, input.RequestID, "Organization membership set to "+input.Status)
+	if err != nil {
+		return err
+	}
+	return repository.ChangeMembershipStatus(ctx, input, service.ownerRole, audit)
+}
+
 func (service *Service) RemoveMembership(ctx context.Context, organizationID, userID, actorUserID, requestID string) error {
 	if !idPattern.MatchString(organizationID) || !idPattern.MatchString(userID) || !idPattern.MatchString(actorUserID) || !boundedOptional(requestID, 128) {
 		return errors.New("organizations: invalid membership removal")
@@ -467,6 +517,31 @@ func (service *Service) RemoveMembership(ctx context.Context, organizationID, us
 	return service.repository.RemoveMembership(ctx, organizationID, userID, service.ownerRole, audit)
 }
 
+// MembershipRemoval binds removal to the exact membership state observed by
+// the caller before fresh authentication began.
+type MembershipRemoval struct {
+	OrganizationID, UserID, ExpectedStatus, ActorUserID, RequestID string
+}
+
+func (service *Service) RemoveMembershipIfCurrent(ctx context.Context, input MembershipRemoval) error {
+	if !idPattern.MatchString(input.OrganizationID) || !idPattern.MatchString(input.UserID) || !idPattern.MatchString(input.ActorUserID) ||
+		(input.ExpectedStatus != "active" && input.ExpectedStatus != "suspended") || !boundedOptional(input.RequestID, 128) {
+		return errors.New("organizations: invalid membership removal")
+	}
+	if service.ownerRole == "" {
+		return errors.New("organizations: owner role is required for membership lifecycle changes")
+	}
+	repository, ok := service.repository.(OptimisticMembershipRepository)
+	if !ok {
+		return ErrMembershipLifecycleUnsupported
+	}
+	audit, err := service.auditWithRequest(input.ActorUserID, input.OrganizationID, "membership.remove", "membership", input.UserID, input.RequestID, "Organization membership removed")
+	if err != nil {
+		return err
+	}
+	return repository.RemoveMembershipIfCurrent(ctx, input, service.ownerRole, audit)
+}
+
 func (service *Service) Invitations(ctx context.Context, organizationID string, limit int) ([]Invitation, error) {
 	if !idPattern.MatchString(organizationID) || limit < 1 || limit > 1000 {
 		return nil, errors.New("organizations: invalid invitation query")

organizations/organizations_test.go

@@ -47,11 +47,25 @@ func TestInvitationFailsClosed(t *testing.T) {
 	}
 }
 
+func TestOptimisticMembershipLifecycleFailsClosedWithoutRepositorySupport(t *testing.T) {
+	service, err := New(&repositoryStub{}, Options{OwnerRole: "organization.owner"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err = service.ChangeMembershipStatus(t.Context(), MembershipStatusChange{OrganizationID: "organization-1234", UserID: "user-12345678", ExpectedStatus: "active", Status: "suspended", ActorUserID: "user-87654321", RequestID: "request-suspend"}); !errors.Is(err, ErrMembershipLifecycleUnsupported) {
+		t.Fatalf("status change err=%v", err)
+	}
+	if err = service.RemoveMembershipIfCurrent(t.Context(), MembershipRemoval{OrganizationID: "organization-1234", UserID: "user-12345678", ExpectedStatus: "active", ActorUserID: "user-87654321", RequestID: "request-remove"}); !errors.Is(err, ErrMembershipLifecycleUnsupported) {
+		t.Fatalf("removal err=%v", err)
+	}
+}
+
 type repositoryStub struct {
 	organization  Organization
 	invitation    Invitation
 	invitationErr error
 	acceptedUser  string
+	members       []Membership
 }
 
 func (repository *repositoryStub) CreateOrganization(_ context.Context, organization Organization, _ Membership, _ AuditEvent) error {
@@ -109,4 +123,7 @@ func (repository *repositoryStub) AcceptInvitation(_ context.Context, _ [32]byte
 func (*repositoryStub) MembershipsForUser(context.Context, string) ([]Membership, error) {
 	return nil, nil
 }
+func (repository *repositoryStub) OrganizationMemberships(context.Context, string, int) ([]Membership, error) {
+	return repository.members, nil
+}
 func (*repositoryStub) TeamsForUser(context.Context, string, string) ([]Team, error) { return nil, nil }

scripts/public-snapshot.allow

@@ -30,6 +30,7 @@ auth/password.go
 auth/password_test.go
 authrecovery/recovery.go
 authrecovery/recovery_test.go
+authrecovery/assisted_test.go
 auth/service_test.go
 authhttp/authhttp.go
 authhttp/authhttp_test.go
@@ -40,6 +41,9 @@ authsqlite/store_test.go
 authsqlite/account.go
 authsqlite/account_test.go
 authsqlite/access.go
+authsqlite/assisted_recovery.go
+authsqlite/bootstrap.go
+authsqlite/bootstrap_test.go
 authsqlite/organizations.go
 authsqlite/passkey.go
 authsqlite/passkey_test.go
@@ -48,6 +52,8 @@ authwebauthn/fuzz_test.go
 authwebauthn/service.go
 authwebauthn/service_test.go
 authwebauthn/types.go
+bootstrap/bootstrap.go
+bootstrap/bootstrap_test.go
 media/media.go
 media/media_test.go
 medialocal/store.go