The #351 merge landed before the force-push with full commands.
This adds the missing subcommands:
- mosaic coord {init,status,mission,continue,run,smoke,resume}
→ delegates to tools/orchestrator/*.sh with --claude/--codex/--pi/--yolo
- mosaic prdy {init,update,validate,status}
→ delegates to tools/prdy/*.sh with --claude/--codex/--pi
- mosaic seq {check,fix,start}
→ sequential-thinking MCP management (native TS)
- mosaic upgrade {release,check,project}
→ delegates to tools/_scripts/mosaic-release-upgrade and mosaic-upgrade
Also removes duplicate prdy registration (was in both launch.ts and
the old registerPrdyCommand — now only in launch.ts).
ea9782b2dc