fix(05): clean must_haves, trailing XML, update ROADMAP to 5 plans

- Remove frontend artifacts from 05-03 must_haves (belong to 05-04)
- Remove trailing XML generation artifacts from 05-04 and 05-05
- Update ROADMAP Phase 5: 5 plans across 4 waves

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.planning/phases/05-dashboard-calendar/05-03-PLAN.md

@@ -41,15 +41,7 @@ must_haves:
       exports: ["CalendarService"]
     - path: "apps/api/src/calendar/providers/ics.provider.ts"
       provides: "ICS event fetch + parse"
-    - path: "apps/web/src/components/dashboard/widgets/calendar-widget.tsx"
-      provides: "Upcoming-events list widget"
-    - path: "apps/web/src/app/(portal)/settings/dashboard/calendar/page.tsx"
-      provides: "Calendar source management UI"
   key_links:
-    - from: "apps/web/src/components/dashboard/widgets/calendar-widget.tsx"
-      to: "/api/calendar/events"
-      via: "fetch in effect"
-      pattern: "calendar/events"
     - from: "apps/api/src/calendar/calendar.service.ts"
       to: "prisma.calendarSource"
       via: "user-scoped query with credential decryption"

.planning/phases/05-dashboard-calendar/05-04-PLAN.md

@@ -180,6 +180,3 @@ Consumed (built in 05-03, do NOT redefine): `GET /api/calendar/events`, `GET|POS
 
 <output>
 Create `.planning/phases/05-dashboard-calendar/05-04-SUMMARY.md` when done
-</output>
-</content>
-</invoke>

.planning/phases/05-dashboard-calendar/05-05-PLAN.md

@@ -126,6 +126,3 @@ No new trust boundaries — verification-only plan; all enforcement was implemen
 
 <output>
 Create `.planning/phases/05-dashboard-calendar/05-05-SUMMARY.md` when done
-</output>
-</content>
-</invoke>