feat(cli): add mops deployed post-deploy hook + init bootstrap

[Kamirus]

What

Implements the mops deployed spec (the specs/mops-deployed.md draft is removed in this PR now that the command exists).

After a successful deploy, mops deployed promotes the just-built .most into a committed deployed/<name>.most so mops check-stable compares against the deployed version on the next build. Closes the manual gap that today silently rots the stable-check baseline whenever someone forgets to copy the file.

CLI surface

mops deployed [canisters...]      # post-deploy hook: copy <build-dir>/<name>.most → <dir>/<name>.most
mops deployed init [canisters...] # one-time bootstrap: empty-actor baseline + sets [check-stable].path

• Source: [build].outputDir (default .mops/.build); override with --build-dir.
• Destination: new [deployed].dir config (default deployed); override with --dir.
• Canister selection mirrors mops build / mops check.
• Missing source → error, never regenerates.
• Warns when [check-stable].path doesn't point at <dir>/<name>.most so silent baseline drift is visible.
• init is idempotent and only rewrites mops.toml when something actually changes.

Lifecycle

mops deployed init backend     # once, before first deploy
mops check backend             # every change
mops build backend
icp deploy
  mops deployed backend        # post-deploy hook
git add deployed/ && git commit

Skill docs (closes #558)

Updates the mops-cli skill to cover the three gaps from #558: why check-stable matters (a local pre-deploy version of ICP's upgrade-time compatibility check), the per-deploy .most maintenance workflow (now mops deployed), and how to bootstrap the baseline for both new and already-deployed canisters.

Out of scope

• .did handling — interface-change-driven, lives in mops generate candid.
• Per-canister directory override, per-environment dirs, deployed-manifest fields — possible v2 follow-ups.

Closes #558

[github-actions]

Cursor AI review

👍 APPROVE — looks safe to merge

Category	Assessment	Details
Summary	✅	Adds mops deployed (post-deploy .most promotion) and mops deployed init (empty-actor baseline + [check-stable].path wiring), with [deployed].dir config and docs/skills/changelog updates.
Code Quality	✅	Reuses resolveCanisters helpers and extracts shared resolveBuildOutputDir; useTempFixtures consolidates temp-fixture setup used by migrate tests.
Consistency	✅	Canister selection matches mops build/check; CLI docs, 09-mops.toml.md, changelog, and skill are in sync.
Security	✅	Local file copy/write only; no chain reads, identity, or package-registry surface.
Tests	✅	Broad coverage (init idempotency, overrides, warnings, multi-canister, E2E with check-stable); snapshot for main init path, targeted assertions for errors.
Maintainability	✅	Clear separation in deployed.ts; draft specs/*.md removed after implementation (candid spec paired with already-shipped mops generate candid).

Verdict

Decision: APPROVE
Risk: Low
Reason: The new command is additive, well-tested, and follows existing CLI/config patterns with no correctness or regression issues identified relative to the base SHA. Draft spec cleanup is intentional housekeeping, not a behavioral change.

---

Generated for commit 7d1271b