Modernize agent hook lifecycle reporting

[vaayne]

Summary

• migrate Codex status integration from legacy config.toml notify to low-noise UserPromptSubmit and Stop hooks in ~/.codex/hooks.json
• preserve unrelated JSON hooks, TOML notify entries, Codex Computer Use --previous-notify wrappers, and symlinked config files during migration and uninstall
• report Pi as waiting only after agent_settled, avoiding false idle states before retries, compaction retries, or queued follow-ups
• remove obsolete Mori-owned PreToolUse registrations for Claude Code and Droid without touching third-party commands
• update hook settings copy, localization, documentation, and changelogs

Verification

• mise run test
• swift build -c release --product Mori
• swift build --build-path .build-cli -c release --product mori
• CI=1 bash scripts/bundle.sh
• temporary-home integration probes for Codex install/migration/uninstall, wrapped legacy notify migration, symlink preservation, and Claude/Droid mixed-hook cleanup
• Pi extension lifecycle probe under Node 24 TypeScript stripping
• shell syntax checks and git diff --check

Notes

The bundled-app launch check was not run because the installed Mori app was already active and single-instance enforcement would terminate the test build; the existing instance was left undisturbed.