Phase 1 MVP - Complete implementation

- Auth: register, login, JWT with refresh tokens, blocklist
- Projects/Folders/Documents CRUD with soft deletes
- Tags CRUD and assignment
- FTS5 search with highlights and tag filtering
- ADR-001, ADR-002, ADR-003 compliant
- Security fixes applied (JWT_SECRET_KEY, exception handler, cookie secure)
- 25 tests passing

app/schemas/search.py

@@ -0,0 +1,18 @@
+from datetime import datetime
+
+from pydantic import BaseModel
+
+from app.schemas.document import TagInfo
+
+
+class SearchResult(BaseModel):
+    id: str
+    title: str
+    excerpt: str
+    project_id: str
+    tags: list[TagInfo] = []
+    score: float
+
+
+class SearchResponse(BaseModel):
+    results: list[SearchResult]