feat: AI coordination protocol and advanced audit operations

dev_docs/ARCHIVE_LOGS.md

@@ -29,3 +29,14 @@ Each entry MUST be formatted chronologically.
 - `backend/routers/items.py` (NEW)
 - `backend/routers/operations.py` (NEW)
 - `backend/main.py` (UPDATED)
+
+### [2026-04-10 13:58] AI Coordination & Bulk Operations (Phase 3)
+**Purpose:** Established Multi-AI handover protocol with archival logic. Extended backend to support bulk check-outs and trash operations with mandatory audit logging.
+**Modified Files:**
+- `dev_docs/SESSION_STATE.md` (NEW)
+- `dev_docs/SESSION_HISTORY.md` (NEW)
+- `AI_RULES.md` (UPDATED)
+- `backend/schemas.py` (UPDATED)
+- `backend/routers/operations.py` (UPDATED)
+
+**Test Results:** Scheme support bulk and trash objects. Logging logic verified in code for session state compliance.

dev_docs/SESSION_HISTORY.md

@@ -0,0 +1,6 @@
+# AI Session History
+
+Archive of previous AI handover notes from `SESSION_STATE.md`.
+Entries are added here when a new AI session starts.
+
+---

dev_docs/SESSION_STATE.md

@@ -0,0 +1,17 @@
+# 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.