docs(11-01): complete mobile responsiveness and MD3 focus indicators plan

- 11-01-SUMMARY.md: execution summary for POLISH-01/POLISH-02
- STATE.md: position advanced to phase 11 plan 01 complete, decisions added
- ROADMAP.md: phase 11 progress updated (1/2 plans complete)
- REQUIREMENTS.md: POLISH-01 and POLISH-02 marked complete

.planning/ROADMAP.md

@@ -98,7 +98,7 @@ Plans:
   2. Every interactive element shows a visible 3px MD3 focus outline when navigated via keyboard (using `focus-visible`)
   3. Step transitions use a subtle fade/slide animation that is suppressed when the user has `prefers-reduced-motion` enabled
   4. When form validation fails, the view auto-scrolls to the first field with an error
-**Plans:** 2 plans
+**Plans:** 1/2 plans executed
 Plans:
 - [ ] 11-01-PLAN.md — Mobile responsive layout + MD3 focus-visible indicators
 - [ ] 11-02-PLAN.md — Step transition animation + auto-scroll to first error
@@ -117,4 +117,4 @@ Plans:
 | 8. Theme Foundation | v1.2 | 2/2 | Complete | 2026-04-01 |
 | 9. MD3 Components | v1.2 | 5/5 | Complete | 2026-04-01 |
 | 10. Content & Clarity | v1.2 | 3/3 | Complete | 2026-04-01 |
-| 11. Polish & Responsiveness | v1.2 | 0/2 | Not started | - |
+| 11. Polish & Responsiveness | 1/2 | In Progress|  | - |