diff --git a/PUBLIC-SNAPSHOT.json b/PUBLIC-SNAPSHOT.json
index 06a26aa..91ae111 100644
--- a/PUBLIC-SNAPSHOT.json
+++ b/PUBLIC-SNAPSHOT.json
@@ -1 +1 @@
-{"schema_version":1,"project":"sandwich-hime-tooling","export_policy":"exact-allowlist-v1","file_count":49,"allowlist_sha256":"4da693e4f51767697cf3d7f45c6484430f5e3e59d7ddad6d0c7ed97646832f7e","manifest_sha256":"fdc76d7dc395da5cfdd449bbc2573880a219967213a47ec835a7bb819e19fbf7"}
+{"schema_version":1,"project":"sandwich-hime-tooling","export_policy":"exact-allowlist-v1","file_count":49,"allowlist_sha256":"4da693e4f51767697cf3d7f45c6484430f5e3e59d7ddad6d0c7ed97646832f7e","manifest_sha256":"60b66bf42fe429ab09020090c250a1ff289f56194e20bdcaaf550022507b87ef"}
diff --git a/PUBLIC-SNAPSHOT.sha256 b/PUBLIC-SNAPSHOT.sha256
index e4436e5..86c1984 100644
--- a/PUBLIC-SNAPSHOT.sha256
+++ b/PUBLIC-SNAPSHOT.sha256
@@ -5,8 +5,8 @@ f27a706c17beb73d496ae90ce3b1e7e4968ba4db6f4737ebfc7f46aa8bde1b46  ./.gitattribut
 f7ac75b443f4ca16b503241344b41aeff9503b0c30bedc2b119551d83cb0fa90  ./DCO.txt
 0d96a4ff68ad6d4b6f1f30f713b18d5184912ba8dd389f86aa7710db079abcb0  ./LICENSE
 e6fdaaaedda9371adbc7cb20dd5fb9a3f6e13a094727eb6b40008254369d4015  ./LICENSES.md
-bd19444f2c5f6d5c6e035a9d7248db8a3a18d66e99c107666eb7441ff8d17d03  ./README.md
-894e33af0a69d7552e96677be6fdac50c61896c4dfa99aad140d38bbf0c18e17  ./RELEASE.md
+a71cbb946a4fee1bff61565b5c4ff75c372d50e2c5d0b8cbc019363bf4ebe444  ./README.md
+af254c44840c44942d967829d6a840862ea98ca73af263464f2633a9cf918d63  ./RELEASE.md
 b6bc2f2dedd9050e34cbdf8ffba4966fb4d96d906ce63b480a7686409674291c  ./SECURITY.md
 7bdf5534cf4642602ab8ad23029ccc57c222f7df7029a5852df55e588611a2b9  ./editors/vscode/.vscodeignore
 e141e6fce7dd83f14143b644eb2b5398d96898deac48627a4701d05cc62f8618  ./editors/vscode/LICENSE
@@ -27,8 +27,8 @@ e8e928d4a94882b21be37dea78a6b379fd9dea6b1691034017ae11f4496333dc  ./editors/vsco
 8c684739f5cca1f5ff7467edd99618e0236e4d08567042d35fa59929c0ea2726  ./editors/vscode/syntaxes/sando.tmLanguage.json
 a7c3f1040e6bb0faed5e48be7e1800297a29ab3793de60055e6b53561ae9bdef  ./editors/vscode/test/grammar/fixtures/mixed.sando
 864f61630baaa97553baee26d90d81b9c8ae1a35d68cde0cf202785a0c71c0a8  ./editors/vscode/test/grammar/grammar.test.js
-6426be921591d001439248babd77fd8c8c390ea4b0f5a7fdb97a22cbf5c9b834  ./editors/vscode/test/integration/run.js
-fe5c4ea75c1de12a78047b9a1437de92b905b2adf8fe7a237723edf08438b4dd  ./editors/vscode/test/integration/suite/index.js
+22c576b68370ee966bbd65d901f9654df85c990671cb37f2b31906598b9476b0  ./editors/vscode/test/integration/run.js
+1fc5d43e52c341d2ea145f60317cda0ea59c801955aeb559dc6727e823fcf857  ./editors/vscode/test/integration/suite/index.js
 6c6378093bab47920a4e8a95188f5d41471d799f21363a4106c8b3f495a6c940  ./editors/vscode/test/unit/core.test.js
 4911677ce39e9a3ebd7c0f9e37c3b1009734c8b522dcbadf8cac59946add8250  ./editors/vscode/test/workspace/cards/badge.sando
 ede0ed96329bc4e05865c9c975fce0a7438c237f16b4900d06a2039b091a2a44  ./editors/vscode/test/workspace/go.mod
@@ -41,7 +41,7 @@ e4870eb4ff4c73bd52603a5fe1fadf3ddfc8a71c43c6e4a790bf8e3ec38a6c36  ./scripts/pack
 e9e1c8b23d4abe63ed4e3eee8151cb713233009a1b88f61ff177ad14efd7c41d  ./scripts/test-public-snapshot.sh
 651937f5625497ce09b06a0232a80de0bf4cee7316aa788eeb9e637018d71fbf  ./scripts/validate-skill.js
 6bd74a6b8e2204967ca6bd2a5e81dcd738034a91eec0c7e97f7ba42c0f033376  ./scripts/verify.ps1
-b4edf786e30b221f95e49d2ccdda1419c0e6583f8b7bde834af686a4e674988b  ./scripts/verify.sh
+83cea91f14297d49134a984e274c170cca14266558a642b0bfd5c85be75bc1a7  ./scripts/verify.sh
 a0e144decd47d1b87623ae6224e5d4c4b3957768179a7c7933a93ec4f5b316c4  ./skills/sandwich-hime/LICENSE
 4f8080d5983a4af57e87e49633cfca189b3d08711715337ad05d7718735fa609  ./skills/sandwich-hime/SKILL.md
 ebaaa8b75f3d5666000d9add3bc9e89a53635c233f7a9703bc925139b056d727  ./skills/sandwich-hime/agents/openai.yaml
diff --git a/README.md b/README.md
index 62843d5..0950d9e 100644
--- a/README.md
+++ b/README.md
@@ -25,12 +25,14 @@ It does not download, install, upgrade, or phone home.
   advertised `lsp-stdio` feature.
 - Sando runtime remains independently versioned; Beta 2 tooling is compatible
   with `sando/v1.0.0-beta.1`.
+- The unchanged Skill and VS Code preview are verified compatible with the
+  compiler and runtime `v1.0.0-rc.1` release candidate.
 
 Exact pinned installation order:
 
 ```sh
-go get gamertan.com/sandwich-hime/sando@v1.0.0-beta.1
-go install gamertan.com/sandwich-hime/cmd/himesan@v1.0.0-beta.2
+go get gamertan.com/sandwich-hime/sando@v1.0.0-rc.1
+go install gamertan.com/sandwich-hime/cmd/himesan@v1.0.0-rc.1
 ```
 
 ## Install the portable skill
@@ -58,8 +60,9 @@ code --install-extension sandwich-hime-0.1.0-preview.1.vsix
 ```
 
 The extension supplies syntax highlighting without trust. Its executable
-features require a trusted workspace and the separately installed Beta 2
-compiler; it never downloads Hime-san for you.
+features require a trusted workspace and a separately installed compatible
+compiler; it never downloads Hime-san for you. The current release-candidate
+installation is Hime-san `v1.0.0-rc.1`.
 
 ## Canonical project
 
diff --git a/RELEASE.md b/RELEASE.md
index e6c54d4..afdc911 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -14,7 +14,8 @@ the 0BSD license.
 `vscode/v0.1.0-preview.1` is a signed annotated tag from the reviewed canonical
 public commit. Its Gitea prerelease contains the exact VSIX, detached signature,
 SHA-256, CycloneDX SBOM, and license/audit evidence. It requires compiler
-`v1.0.0-beta.2`; it is not published to Visual Studio Marketplace or Open VSX.
+`v1.0.0-beta.2` or newer and has been verified against `v1.0.0-rc.1`; it is not
+published to Visual Studio Marketplace or Open VSX.
 
 The first registry release is manual and may occur only after classroom and
 community feedback covers installation, live diagnostics, component
diff --git a/editors/vscode/test/integration/run.js b/editors/vscode/test/integration/run.js
index 1c6e5a6..e6150fe 100644
--- a/editors/vscode/test/integration/run.js
+++ b/editors/vscode/test/integration/run.js
@@ -8,8 +8,14 @@ const {downloadAndUnzipVSCode, runTests} = require('@vscode/test-electron');
 (async () => {
   const extensionDevelopmentPath = path.resolve(__dirname, '..', '..');
   const sourceWorkspace = path.join(extensionDevelopmentPath, 'test', 'workspace');
-  const temporary = fs.mkdtempSync(path.join(os.tmpdir(), 'himesan-vscode-integration-'));
+  // macOS exposes its temporary tree through /var, which is a symlink to
+  // /private/var. Hime-san intentionally rejects user-supplied workspace roots
+  // reached through symlinks, so make this test-owned path physical before it
+  // crosses the LSP boundary.
+  const temporaryRoot = process.platform === 'darwin' ? '/private/tmp' : fs.realpathSync(os.tmpdir());
+  const temporary = fs.realpathSync(fs.mkdtempSync(path.join(temporaryRoot, 'himesan-vscode-integration-')));
   const workspace = path.join(temporary, 'project [safe]');
+  const userData = path.join(temporary, 'user-data');
   fs.cpSync(sourceWorkspace, workspace, {recursive: true});
   try {
     const vscodeExecutablePath = await downloadAndUnzipVSCode('1.96.4');
@@ -17,7 +23,7 @@ const {downloadAndUnzipVSCode, runTests} = require('@vscode/test-electron');
       vscodeExecutablePath,
       extensionDevelopmentPath,
       extensionTestsPath: path.join(__dirname, 'suite', 'index.js'),
-      launchArgs: [workspace, '--disable-extensions', '--disable-gpu', '--skip-welcome', '--skip-release-notes'],
+      launchArgs: [workspace, `--user-data-dir=${userData}`, '--disable-extensions', '--disable-gpu', '--skip-welcome', '--skip-release-notes'],
       extensionTestsEnv: {HIMESAN_TEST_BINARY: process.env.HIMESAN_TEST_BINARY || ''},
     });
   } finally {
diff --git a/editors/vscode/test/integration/suite/index.js b/editors/vscode/test/integration/suite/index.js
index a04c0a8..309bc4d 100644
--- a/editors/vscode/test/integration/suite/index.js
+++ b/editors/vscode/test/integration/suite/index.js
@@ -7,7 +7,7 @@ const vscode = require('vscode');
 
 async function run() {
   const binary = process.env.HIMESAN_TEST_BINARY;
-  assert.ok(binary && path.isAbsolute(binary), 'HIMESAN_TEST_BINARY must be an absolute Beta 2 candidate path');
+  assert.ok(binary && path.isAbsolute(binary), 'HIMESAN_TEST_BINARY must be an absolute compatible compiler path');
   const folder = vscode.workspace.workspaceFolders?.[0];
   assert.ok(folder, 'integration workspace missing');
   await vscode.workspace.getConfiguration('sandwichHime', folder.uri).update('himesanPath', binary, vscode.ConfigurationTarget.WorkspaceFolder);
diff --git a/scripts/verify.sh b/scripts/verify.sh
index bac1698..e07fe77 100755
--- a/scripts/verify.sh
+++ b/scripts/verify.sh
@@ -5,7 +5,7 @@ root=$(CDPATH= cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)
 cd "$root"
 node scripts/validate-skill.js
 go run ./scripts/package-skill.go
-(cd editors/vscode && npm run verify)
+(cd editors/vscode && npm ci && npm run verify)
 first_sbom=$(mktemp)
 second_sbom=$(mktemp)
 trap 'rm -f -- "$first_sbom" "$second_sbom"' EXIT