feat(swift): E2 Intent Classification voltooid

Epic 2 - Intent Classification (10 SP):
- E2.S1: Local classifier met regex patterns (<50ms)
- E2.S2: Entity extraction (patientName, category, content)
- E2.S3: AI fallback met Claude Haiku bij confidence <0.8
- E2.S4: POST /api/intent/classify API route

Two-tier systeem:
1. Lokale regex classificatie (snel, offline)
2. AI fallback voor lage confidence of complexe input

Bouwplan bijgewerkt naar v1.4 (31/68 SP, 46% done)

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

Co-Authored-By: Colin Lit <colin@example.com>

lib/swift/index.ts

@@ -4,3 +4,6 @@
 
 export * from './types';
 export * from './use-swift-voice';
+export * from './intent-classifier';
+export * from './intent-classifier-ai';
+export * from './entity-extractor';