docs(cortex): herstructureer documentatie in 6 aparte secties

Vervangt de enkele "Cortex Command Center" pagina door 6 gerichte documenten:
- Overzicht: introductie, basis gebruik, context bar
- Intent Systeem: Reflex Arc, Orchestrator, intent types
- Blocks: Dagnotitie, Zoeken, Overdracht, Patient Dashboard
- @Mention Systeem: mentions, sidebar, context-aware selectie
- Keyboard Shortcuts: alle sneltoetsen per context
- Proactieve Suggesties: Nudge systeem en protocollen

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

content/nl/documentatie/_index.json

@@ -18,17 +18,23 @@
       "description": "EPD functionaliteit",
       "order": 3
     },
+    {
+      "id": "cortex",
+      "title": "Cortex Intent Driven EPD",
+      "description": "AI-gestuurd commandocentrum met natuurlijke taal interface",
+      "order": 4
+    },
     {
       "id": "infrastructure",
       "title": "Infrastructure",
       "description": "Ondersteunende systemen",
-      "order": 4
+      "order": 5
     },
     {
       "id": "bugs",
       "title": "Bugs & Fixes",
       "description": "Opgeloste bugs en troubleshooting",
-      "order": 5
+      "order": 6
     }
   ],
   "categories": [
@@ -155,6 +161,14 @@
       "order": 13,
       "status": "completed"
     },
+    {
+      "slug": "cortex-command-center",
+      "title": "Cortex Command Center",
+      "group": "cortex",
+      "description": "AI-gestuurd commandocentrum voor spraak- en tekstopdrachten met multi-intent support",
+      "order": 1,
+      "status": "active"
+    },
     {
       "slug": "voice-controlled-reporting",
       "title": "Spraakgestuurd Rapporteren (v2)",