docs: finalize feat_overnight_studies_summary_card (PR #444 merged)

[SoundMindsAI]

Summary

Finalization for feat_overnight_studies_summary_card (merged ba1e6d68).

• Moves the feature folder 02_mvp2/feat_overnight_studies_summary_card → implemented_features/2026_06_04_feat_overnight_studies_summary_card (no phase idea files — full folder travels).
• pipeline_status.md: Implementation → Complete; adds Release: mvp2 marker so the dashboard classifier keeps it in MVP2 after the bucket-less move.
• implementation_plan.md: Status → Complete (PR feat: "Ran while you were away" card on /studies (feat_overnight_studies_summary_card) #444, merged 2026-06-04).
• state.md: new merge prepended to "Last 5 merges"; infra_generated_artifact_freshness_gate PR infra(freshness-gate): CI gates for generated artifacts (copy-docs + openapi.json + types.ts) #433 dropped to the older-entries reference line; branch / active-feature / in-flight / queued sections refreshed. (26 KB, under the 60 KB gate.)
• state_history.md: full merge narrative prepended.
• Dashboards regenerated by the pre-commit hook.

Test plan

• Docs-only change — no code touched.
• Pre-commit hooks pass (dashboard regen, state.md size gate, SPDX, secrets).

🤖 Generated with Claude Code

[gemini-code-assist]

Code Review

This pull request updates several documentation files, project dashboards, and state tracking files to mark the 'Overnight Studies Summary Card' feature (PR #444) as completed and merged under MVP2. The updates include progress metrics, pipeline statuses, and a detailed implementation narrative in the state history. The single review comment was removed because it incorrectly flagged a typo regarding the 'useState' initializer pattern that was already correct in the proposed changes, leaving no further feedback to address.

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