docs(05): create phase plan

Phase 05: CLI Scaffolding
- 2 plans in 2 waves
- Wave 1: CLI framework + plugin scaffolding (05-01)
- Wave 2: Theme + component scaffolding (05-02)
- Ready for execution

.planning/ROADMAP.md

@@ -99,11 +99,11 @@ Plans:
   2. Developer can run CLI command to scaffold a new theme with structure
   3. Developer can run CLI command to scaffold a component within a plugin
   4. Generated scaffolds follow project conventions and are immediately usable
-**Plans**: TBD
+**Plans**: 2 plans
 
 Plans:
-- [ ] 05-01: CLI framework and plugin scaffolding
-- [ ] 05-02: Theme and component scaffolding
+- [ ] 05-01-PLAN.md - CLI framework setup with ZIO CLI and plugin scaffolding command
+- [ ] 05-02-PLAN.md - Theme scaffolding (blank/starter templates) and component scaffolding
 
 ### Phase 6: Backend Authentication
 **Goal**: Secure admin backend with user accounts and role-based access
@@ -210,7 +210,7 @@ Phases execute in numeric order: 1 -> 2 -> 3 -> 4 -> 5 -> 6 -> 7 -> 8 -> 9 -> 10
 | 2. Plugin System | 0/3 | Planned | - |
 | 3. Component System | 0/2 | Planned | - |
 | 4. Theme Engine | 0/2 | Planned | - |
-| 5. CLI Scaffolding | 0/2 | Not started | - |
+| 5. CLI Scaffolding | 0/2 | Planned | - |
 | 6. Backend Authentication | 0/3 | Not started | - |
 | 7. Admin Forms & Lists | 0/3 | Not started | - |
 | 8. Admin Dashboard | 0/2 | Not started | - |