claude@clouddev1
67d68db5f8
Closes out track 2's ADR-0015 backlog. * `--resume` CLI flag (L1a, ADR-0015 §7) opens the most- recently-used project, tracked in <data-root>/last_project. Mutually exclusive with a positional <project-path>; errors cleanly to stderr (above the shell prompt) on missing file or stale recorded path. last_project is rewritten on every successful project open (startup, load, new, save as, import). * Persistent input history (I2-persist, ADR-0015 §12). On project open, the in-memory navigable history is hydrated from the tail of history.log (capped at the in-memory cap). ProjectSwitched gains a `history_entries` payload field; App::seed_history is the entry point. Pipes inside source text round-trip via splitn(3); unknown escape sequences are passed through literally. * Migration framework scaffold (F3, ADR-0015 §9). New persistence::migrations module with MigratorRegistry + migrate_to_latest + ensure_project_yaml_migrated. Empty in v1 (production registry has no migrators); the loader runs through it on every project open and is exercised by tests with a fake v1→v2 migrator. Writes project.yaml.v<N>.bak before any migrator runs; verifies each step bumps the version field. Refreshes docs/requirements.md (A1 / I2 / F3 / E1 / L1a / test baseline) and adds docs/handoff/20260508-handoff-3.md covering both Iter 5 and Iter 6. Total tests: 408 passing, 0 failing, 0 skipped (up from 345 at handoff-2). Clippy clean.