docs: sync CLAUDE.md and AGENTS.md with current codebase

[slittycode]

$(cat <<'EOF'

Summary

Documentation audit against the live codebase revealed five items that exist in the repo but were absent from CLAUDE.md and apps/backend/AGENTS.md:

• phase2_provider.py + moss_sidecar/ — added as numbered item feat(ui): re-analyze CTA for legacy Session Musician runs #24 in the backend core files section of CLAUDE.md and to the File Map in apps/backend/AGENTS.md. This is the selectable Phase 2 interpretation provider (default-off experiment; real-model path is a 501 licence-gated stub).
• phase2_provider_evaluation.py — added to the eval harnesses list (item 16) in CLAUDE.md and to the operator scripts section of AGENTS.md.
• evaluate_phase2_providers.py (runner script in apps/backend/scripts/) — added to the backend scripts listing in both files, with its wiring to phase2_provider_evaluation.py noted.
• docs/PHASE2_PROVIDER.md — added to the docs/ key contents in the repo layout section (was already referenced in the ENV vars section but missing from the inventory).
• incorporations/msst-separation-licence-gate-2026-06-05.md — added to the incorporations/ example list.

No code changes. All additions are accurate reflections of already-merged, already-working code.

Test plan

• Verify CLAUDE.md diff — five targeted insertions, no deletions of existing content
• Verify apps/backend/AGENTS.md diff — two targeted insertions matching CLAUDE.md

https://claude.ai/code/session_0159nkJoHK5shz8USWWpiwrf
EOF
)

---

Generated by Claude Code

[slittycode]

Verdict: APPROVE

Summary

Docs-only sync: five targeted insertions into CLAUDE.md and apps/backend/AGENTS.md covering phase2_provider.py + moss_sidecar/, phase2_provider_evaluation.py, evaluate_phase2_providers.py, docs/PHASE2_PROVIDER.md, and incorporations/msst-separation-licence-gate-2026-06-05.md. Every file referenced in the additions was verified to exist on disk. No existing content deleted; numbering and cross-references are internally consistent.

Findings

None.

Test results

N/A — docs only.

Phase boundary check

Clean. No code touched.

---

Generated by Claude Code

[slittycode]

Verdict: APPROVE (posted as COMMENT — can't self-approve)

Summary

Docs-only sync adding five missing entries to CLAUDE.md and apps/backend/AGENTS.md: phase2_provider.py + moss_sidecar/, phase2_provider_evaluation.py, evaluate_phase2_providers.py (script), docs/PHASE2_PROVIDER.md, and incorporations/msst-separation-licence-gate-2026-06-05.md. All three CI checks pass. Every referenced file was verified to exist in the repo on this branch, including tests/test_phase2_provider.py (cited in the AGENTS.md entry).

Findings

None.

Test results

Frontend ✓ / Backend ✓ / Loudness WASM ✓. No test changes; no tests required for docs.

Phase boundary check

Clean. No code touched.

---

Generated by Claude Code