feat: AI coordination protocol and advanced audit operations

dev_docs/SESSION_STATE.md

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+# AI Session State
+
+**Status**: Active - Implementation of AI Coordination and Advanced Operations.
+**Current AI Agent**: Gemini (Antigravity)
+**Context**: 
+- Backend is initialized with FastAPI and SQLite.
+- Core Item and Operation routers are registered.
+- `AI_RULES.md` is initialized.
+
+**Specific Implementation Logic**:
+- Audit logging is central to all operations.
+- Using `html5-qrcode` for the PWA later.
+- Avoid native mobile apps, use PWA with service workers.
+
+**Handovers**:
+- Starting work on `trash` and `bulk-check-out` endpoints.
+- Coordination files being established.