chore(M11): swap demo-active sprint from M10 to M11

M10 is gemerged en afgesloten — M11 wordt de nieuwe demo-actieve milestone
zodat get_claude_context (via MCP) ST-1101 als next-story teruggeeft.

Drie maps in parse-backlog.ts uitgebreid: M11 priority=4, goal omschrijving,
sprint_status='ACTIVE'. M10 → COMPLETED.

Vereist npx prisma db seed na deze commit zodat de live DB de nieuwe
sprint-state weerspiegelt.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

prisma/seed-data/parse-backlog.ts

@@ -46,6 +46,7 @@ const MILESTONE_PRIORITY: Record<string, 1 | 2 | 3 | 4> = {
   M8: 4,
   M9: 4,
   M10: 4,
+  M11: 4,
 }
 
 const MILESTONE_GOAL: Record<string, string> = {
@@ -61,6 +62,7 @@ const MILESTONE_GOAL: Record<string, string> = {
   M8: 'Realtime updates voor Solo Paneel',
   M9: 'Actief Product Backlog — persistent gekozen product',
   M10: 'Password-loze inlog via QR-pairing',
+  M11: 'Vraag-antwoord-kanaal Claude ↔ user',
 }
 
 const MILESTONE_SPRINT_STATUS: Record<string, ParsedMilestone['sprint_status']> = {
@@ -75,7 +77,8 @@ const MILESTONE_SPRINT_STATUS: Record<string, ParsedMilestone['sprint_status']>
   M7: 'COMPLETED',
   M8: 'COMPLETED',
   M9: 'COMPLETED',
-  M10: 'ACTIVE',
+  M10: 'COMPLETED',
+  M11: 'ACTIVE',
 }
 
 const MILESTONE_KEY = /^(?:M[\d.]+|PBI-\d+)$/