feat: publish Sandwich Hime tooling preview

Publish the exact sanitized Agent Skill and VS Code preview source tree with independent license boundaries, deterministic provenance manifests, and no private development history. Material design and implementation assistance was provided by OpenAI Codex.

Signed-off-by: Cole Speelman <crspeelman@gmail.com>

scripts/verify.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: AGPL-3.0-only
+set -euo pipefail
+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)
+first_sbom=$(mktemp)
+second_sbom=$(mktemp)
+trap 'rm -f -- "$first_sbom" "$second_sbom"' EXIT
+node editors/vscode/scripts/sbom.js >"$first_sbom"
+node editors/vscode/scripts/sbom.js >"$second_sbom"
+cmp -s "$first_sbom" "$second_sbom"
+git diff --check