Upstream Mike PR review

[github-actions]

Automated-Upstream-Mike-Sync: true
Upstream-Risk: low

Summary

Reviewed all 8 PRs in bundle order. No change qualifies for automatic adoption or adaptation, so the combined patch is empty. The working tree was not modified; .ross-upstream/ was already untracked.

Upstream classifications

• Upstream-Mike-PR: 242 — investigate — Security, SSRF, OAuth egress, dependencies, and backend production behavior are protected areas. ROSS also has a divergent MCP implementation requiring security review.
• Upstream-Mike-PR: 245 — skip — ROSS already implements a stricter runtime-configured CORS allowlist and explicit denial middleware; the upstream implementation is superseded.
• Upstream-Mike-PR: 273 — investigate — The dead abstraction still exists in ROSS, but changing request-body parsing affects backend production behavior and backend/src is excluded from the patch.
• Upstream-Mike-PR: 253 — investigate — The backend tests may be useful, but they require backend/src and test-configuration changes and depend on Mike-specific coverage assumptions.
• Upstream-Mike-PR: 255 — investigate — The bundle mechanically flags this 1,354-line change as too large; it also includes CI, dependencies, a lockfile, configuration, and API/SSE behavior tests.
• Upstream-Mike-PR: 279 — investigate — Large cryptographic and data-integrity change spanning schemas, migrations, environment configuration, exports, public endpoints, and backend production behavior.
• Upstream-Mike-PR: 280 — investigate — The UI portion depends on new backend workflow behavior, shared types, README claims, and build scripts; it is an architecture-dependent feature rather than presentation-only UI.
• Upstream-Mike-PR: 246 — skip — ROSS already has a ROSS-specific security policy and extensive controlled workflows. Mike-specific hosted-service, release, secret-scanning, and governance changes are protected and non-portable.

Safety

This is a ready numeric low-risk synchronization pull request. Only the low-risk synchronization ledger changes. Exact-head Baseline, bounded repair, review, draft, mergeability, and automatic-merge safeguards remain authoritative. This task does not merge the pull request.