Initial commit: SQL audit platform v0.1.0

FastAPI backend with auth, user, instance, ticket, query, dashboard APIs.
React + TypeScript frontend with mock data UI (10 pages).
SQLite + async SQLAlchemy, JWT auth, role-based access control.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend/app/schemas/query.py

@@ -0,0 +1,16 @@
+from typing import Optional, List, Dict, Any
+from pydantic import BaseModel, Field
+
+
+class QueryRequest(BaseModel):
+    instance_id: int
+    database: Optional[str] = None
+    sql: str = Field(..., min_length=1)
+
+
+class QueryResult(BaseModel):
+    columns: List[str]
+    rows: List[Dict[str, Any]]
+    total: int
+    elapsed_ms: int
+    truncated: bool = False