Bootstrap project and safe work-item workflow

delivery_backlog/stories/US05-01-upload-preflight.md

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+# US05-01 — Validate Credentials and Upload Readiness
+
+Epic: [E05](../E05-immich-upload.md)
+
+As a user, I want upload blockers and scope validated before execution so unverified or
+changed files never reach Immich accidentally.
+
+## Acceptance criteria
+
+- Preflight checks credentials without exposing them, server reachability, selected
+  album scope, canonical/safety/analysis/EXIF readiness, and current byte hashes.
+- The redacted command preview shows exact folders, album mapping, and asset counts.
+- Partial scope and every blocker require explicit resolution or approved policy.
+- Preflight produces a versioned token invalidated by relevant changes.
+
+## Automated tests
+
+- Integration tests cover valid, missing/invalid credential, blocked stage, changed
+  bytes, partial album, stale token, and secret redaction.
+
+## Dependencies
+
+- E04 complete