feat(plugin): persist tenant-scoped installation authority

[seonghobae]

Buyer/security outcome

Rebuild the durable plugin-installation persistence slice from current protected main (0d8c86e6a19a16448ded0cc88a54d4b1e1a7ba2e) so #130 can advance without carrying stale/conflicted ancestry.

Preservation proof

main -> this head contains exactly the same 11 semantic paths owned by the superseded #156 lane: CI/turbo integration-database propagation, current-main CHANGELOG plus two plugin entries, the plugin_integration.plugin_installation_record migration, migration/repository/tenant/user regressions, PostgresPluginInstallationStore, installer-scoped application authority, and the standards note. No current protected Gateway/Calendar/Integration event-authority files are overwritten.

Durable authority contract

• opaque UUIDv4 installation/workspace/installer identity;
• exact manifest SHA-256 plus normalized explicit grant subset;
• no plaintext secret/token/credential/password column;
• fixed parameterized SQL;
• create replay winner bounded by exact installation+workspace+installer authority;
• lookup and revocation scoped simultaneously by installation, workspace and installing user;
• atomic active -> revoked transition with fail-closed replay/corruption handling;
• real PostgreSQL constraints and persistence evidence through INTEGRATION_DATABASE_URL.

Scope

This is still only the restart-safe installation-authority persistence foundation. Plugin KMS/secret lifecycle, outbound HTTPS/SSRF-safe delivery, retry/dead-letter evidence, operator/public APIs and runtime composition remain later #130 slices.

Merge gate

Merge only after the unchanged exact head passes package tests/typecheck/build, exact configured coverage/docstrings, CI, AppGuardrail, SAST Semgrep, Security Scan, Commercial Readiness, all current review findings and current-live-base compatibility without administrative bypass.

Supersedes #156; refs #130 and protected #151.

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📥 Commits

Reviewing files that changed from the base of the PR and between 0d8c86e and 61e9859.

📒 Files selected for processing (11)

• .github/workflows/ci.yml
• CHANGELOG.md
• apps/integration-service/migrations/0001_plugin_installation_record.sql
• apps/integration-service/src/plugin-installation-migration.test.ts
• apps/integration-service/src/plugin-installation-repository.test.ts
• apps/integration-service/src/plugin-installation-repository.ts
• apps/integration-service/src/plugin-installation-tenant-lookup.test.ts
• apps/integration-service/src/plugin-installation-user-authority.test.ts
• apps/integration-service/src/plugin-installation.ts
• docs/research/2026-08-10-plugin-installation-authority-standards.md
• turbo.json

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