docs: finalize infra_generated_artifact_freshness_gate (PR #433 merged)

[SoundMindsAI]

Summary

Finalization for #433 (infra_generated_artifact_freshness_gate, squash-merged c5c36c65). Docs-only — no source changes.

• Move the feature folder planned_features/02_mvp2/infra_generated_artifact_freshness_gate/ → implemented_features/2026_06_03_infra_generated_artifact_freshness_gate/ (flat, date-prefixed).
• Retire the standalone Phase-2 record planned_features/02_mvp2/infra_openapi_types_freshness_gate/ — both phases shipped together in infra(freshness-gate): CI gates for generated artifacts (copy-docs + openapi.json + types.ts) #433, so the "discoverable-if-Phase-2-ships-alone" folder is no longer needed.
• pipeline_status.md: Implementation → Complete + Release: mvp2 marker (the durable release signal once the folder leaves the 02_mvp2/ bucket so the dashboard classifier doesn't fall back to MVP1).
• implementation_plan.md: Status → Complete (PR infra(freshness-gate): CI gates for generated artifacts (copy-docs + openapi.json + types.ts) #433, c5c36c65).
• Regenerate DASHBOARD.md, MVP2_DASHBOARD.md, the *.html views, and website/docs/roadmap.md via the dashboard-regen pre-commit hook.

Test plan

• Pre-commit hooks pass (reuse-lint, secrets, dashboard-regen lockstep)
• No source changes — docs/dashboards only

🤖 Generated with Claude Code

[gemini-code-assist]

Code Review

This pull request updates the project's documentation, dashboards, and roadmap to reflect the completion and merge of the 'Generated Artifact Freshness Gate' (infra_generated_artifact_freshness_gate) infrastructure feature (PR #433). Key updates include moving this feature from planned to completed, retiring the standalone 'OpenAPI Types Freshness Gate' idea folder, and adjusting the overall MVP2 progress metrics and dependency graphs accordingly. Additionally, a new planned chore, 'PR Yml Parallelize Backend Job', has been added to the roadmap. There are no review comments on these changes, so no further feedback is provided.

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