Bootstrap project and safe work-item workflow

delivery_backlog/stories/US03-03-proposal-generation.md

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+# US03-03 — Generate and Persist Versioned Proposals
+
+Epic: [E03](../E03-album-proposals.md)
+
+As a user, I want AI-assisted album proposals with rationale and confidence so I can
+evaluate suggestions before approving them.
+
+## Acceptance criteria
+
+- A provider adapter receives only the minimum aggregated evidence and returns a
+  validated structured proposal.
+- Proposal, evidence version, model/prompt version, rationale, confidence, edits, and
+  approval state are durable.
+- Malformed, rate-limited, failed, duplicate, and stale responses are explicit and
+  safely retryable.
+- Approval validates the latest proposal version and performs no rename.
+
+## Automated tests
+
+- Deterministic fake-provider tests cover success, malformed output, retry, and failure.
+- API tests cover creation, edits, optimistic conflicts, approval, and restart.
+
+## Dependencies
+
+- US03-01, US03-02