docs: update SESSION_STATE for Phase 3 Task 3 completion

dev_docs/SESSION_STATE.md

@@ -1,9 +1,89 @@
 # CURRENT AI WORKING SESSION — HANDOVER
 
 **Active AI:** Claude Haiku 4.5
-**Last Updated:** 2026-04-21 (Session 22 - Phase 3 Task 2 Complete)
-**Current Version:** v1.13.1 (Auto-photo-save helper + Phase 3 Task 2 complete)
-**Branch:** dev (All changes committed, ready for Phase 3 Task 3)
+**Last Updated:** 2026-04-21 (Session 23 - Phase 3 Task 3 Complete)
+**Current Version:** v1.13.1 (Auto-photo-save integration + Phase 3 Task 3 complete)
+**Branch:** dev (All changes committed, ready for Phase 3 Task 4)
+
+---
+
+## SESSION 23 SUMMARY — Phase 3 Task 3: Integrate Auto-Save into Item Creation Flow
+
+### What Was Done
+
+**Phase 3 Task 3: Integrate auto-photo-save into item creation endpoint — COMPLETE ✅**
+
+1. ✅ **Extended ItemCreate schema** (`backend/schemas/items.py`)
+   - Added `extracted_image_bytes: Optional[str] = None` — Base64-encoded image data from AI extraction
+   - Added `image_processing: Optional[Dict[str, Any]] = None` — {crop_bounds, rotation_degrees, confidence} from AI
+   - Both fields optional for full backward compatibility
+
+2. ✅ **Updated create_item endpoint** (`backend/routers/items.py`)
+   - Exclude image fields from database item creation using `model_dump(exclude={...})`
+   - After item committed, check if BOTH extracted_image_bytes AND image_processing provided
+   - Decode base64 to bytes and call `_auto_save_photo_from_extraction` helper
+   - Helper call includes: item_id, image_bytes, crop_bounds, rotation_degrees, db session
+   - If photo save succeeds: refresh item from DB to load updated photo fields
+   - If photo save fails: log warning, don't block item creation
+   - Exception handling: catch all errors, log them, don't fail item creation
+
+3. ✅ **Comprehensive integration tests** (`backend/tests/test_items.py`)
+   - Test 1: Create item WITH image_processing → photo auto-saved ✅
+   - Test 2: Create item WITHOUT image_processing → no photo, backward compatible ✅
+   - Test 3: Create item WITH invalid image_processing → item created, photo skipped ✅
+   - Test 4: Create item WITH crop_bounds=None → item created, photo skipped ✅
+   - Test 5: Create item WITH bytes but NO processing → item created, photo skipped ✅
+   - All 5 new tests passing ✅
+   - All 8 existing item tests still passing ✅
+   - Total: 13/13 item tests passing
+
+4. ✅ **Full test suite validation**
+   - Backend: 158/159 tests passing (1 pre-existing failure in test_schema.py, unrelated)
+   - Zero regressions introduced
+   - All photo creation logic working correctly
+
+### Key Implementation Details
+
+**Schema Changes:**
+```python
+class ItemCreate(ItemBase):
+    extracted_image_bytes: Optional[str] = None  # Base64-encoded image
+    image_processing: Optional[Dict[str, Any]] = None  # {crop_bounds, rotation_degrees, confidence}
+```
+
+**Endpoint Integration:**
+- Exclude image fields before item creation: `model_dump(exclude={"extracted_image_bytes", "image_processing"})`
+- Both fields required to trigger auto-save (not just one)
+- Base64 decode with error handling
+- Call helper with: `_auto_save_photo_from_extraction(item_id, image_bytes, crop_bounds, rotation_degrees, db)`
+- Refresh item to load updated photo_path, photo_thumbnail_path, photo_upload_date
+- Photo save failures don't block item creation (graceful fallback)
+
+**Backward Compatibility:**
+- Old clients without image_processing fields work unchanged
+- New fields are optional (default to None)
+- Both fields must be present to trigger auto-save
+- Missing fields result in graceful skip (no exceptions)
+- Existing item creation flow completely preserved
+
+### Test Results
+- **New Tests:** 5/5 passing ✅
+- **Existing Tests:** 8/8 still passing ✅
+- **Backend Suite:** 158/159 passing (1 pre-existing failure) ✅
+- **Commit:** `4f63b3b9` (feat: integrate auto-photo-save into item creation endpoint)
+
+### Files Modified
+- `backend/schemas/items.py` — Extended ItemCreate with optional image fields
+- `backend/routers/items.py` — Updated create_item endpoint with auto-save integration
+- `backend/tests/test_items.py` — Added 5 comprehensive integration tests
+
+### What's Next (Phase 3 Task 4+)
+- Task 4: Store extracted image in useAIExtraction hook
+- Task 5: Auto-upload photo in useItemCreate hook
+- Task 6: Update AIOnboarding component
+- Task 7: Backend integration tests (full flow)
+- Task 8: Frontend E2E test
+- Task 9: Documentation update
 
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