merge: integrate Prompt Museum media rendering

.project-docs/30-worklog/tasks/20260818-museum-media-integration-6b7e.md

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+# Task: Integrate Prompt Museum media fix
+
+## Identity
+
+- Task ID: 20260818-museum-media-integration-6b7e
+- Mode: Integration
+- Branch: codex/20260818-museum-media-integration-6b7e-prompt-museum-media
+- Worktree: D:\mk-integration-6b7e
+- Base commit: 11b19832a35477d2136c6ea953dd9c408fd84816
+- Owner: developer
+- Status: Completed
+
+## Scope
+
+- Fast-forward the completed Prompt Museum media-rendering source task `f8d82e6` from the current `main` tip `11b1983` into the integration line.
+- Promote the accepted durable media-boundary facts into `current-state.md`, `50-evidence/evidence-index.md`, and the existing Prompt Museum release commitment without changing the source task record.
+
+## Intent And Constraints
+
+- Preserve Main ownership of Works credentials, the fixed relative media path, one 401 refresh retry, 10 MiB/trusted-raster limits, Renderer data-URL validation, direct HTTPS behavior, and card-local failure handling.
+- Do not claim production Works/CDN availability, real-account behavior, or signed-package acceptance from local automation.
+
+## Outcome
+
+- Fast-forwarded `11b1983` to source commit `f8d82e6`, carrying the Main proxy, shared DTO, Renderer API/page behavior, focused regressions, and source task record.
+- Promoted the source task's current-state, evidence, and commitment candidates; no semantic conflicts or human decision were required.
+
+## Verification
+
+- `git merge --ff-only f8d82e6`: PASS; merge-base confirmed `11b1983` is an ancestor.
+- Source verification reviewed as read-only: 27 focused unit tests, typecheck, scoped ESLint, Vite build, targeted Electron E2E 1/1, `git diff --check`, and final Sol review PASS.
+- Integration worktree remains clean after documentation updates; task-aware drift check will run before release.
+
+## Follow-ups
+
+- Real Works account, deployed media endpoint/CDN, and signed-package smoke remain release follow-ups.
+
+## Promotion Candidates
+
+- `current-state.md`: record `f8d82e6` and the Main-owned bounded media boundary.
+- `50-evidence/evidence-index.md`: record focused 27-test/build/E2E evidence and its production limitation.
+- `80-commitments/commitments.md`: extend the existing Prompt Museum production acceptance to cover relative media proxy behavior.