Update architecture plan: Item #1 in progress

Documentation updates:
- Mark Item #1 as "IN PROGRESS - Phase 1 Setup Complete"
- Add implementation progress section showing ~5% complete
- Document completed infrastructure:
  - blueprint-refactoring-guide.md created
  - routes/ directory and __init__.py created
  - utils/category_utils.py extracted
- Outline next steps for Phase 1

Status: 2 of 10 items completed, 1 in progress

Generated with Claude Code

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

Author: ChefJulio

docs/systems/architecture-refactoring-plan.md

@@ -2,7 +2,7 @@
 **Master Architect Review - Top 10 Efficiency & DRY Improvements**
 
 Date: 2025-10-15
-Status: In Progress - 2 of 10 items completed (20%)
+Status: In Progress - 2 of 10 items completed, 1 in progress (20%)
 
 ---
 
@@ -30,6 +30,8 @@ This document outlines the top 10 architectural improvements identified during a
 
 ### 1. Monolithic app.py - 3,562 Lines is Unmaintainable ⭐⭐⭐⭐⭐
 
+**Status: 🔄 IN PROGRESS (2025-10-15) - Phase 1 Setup Complete**
+
 **Problem:**
 - All 45+ routes crammed into one file
 - Already have `social_routes.py`, `chat_routes.py`, etc., but 90% of routes still in `app.py`
@@ -81,6 +83,29 @@ utils/
 - [ ] No import errors
 - [ ] Performance unchanged
 
+**Implementation Progress:**
+
+**Phase 1 Setup (Completed 2025-10-15):**
+- ✅ Created comprehensive refactoring guide: `docs/systems/blueprint-refactoring-guide.md`
+  - Current state analysis (3,613 lines in app.py)
+  - Blueprint organization plan (12 route modules)
+  - Utils organization plan (5 utility modules)
+  - Implementation strategy and risk mitigation
+- ✅ Created routes/ directory structure
+  - `routes/__init__.py`: Blueprint registration infrastructure
+- ✅ Extracted first utility module:
+  - `utils/category_utils.py`: Category management functions
+  - Moved LEGACY_CATEGORIES and DEFAULT_CATEGORY_COLORS
+  - Functions: get_all_categories(), get_all_category_colors(), get_category_color()
+
+**Next Steps:**
+- Extract remaining utils (rrule, hybrid_storage, entry_helpers, date)
+- Update app.py imports to use new utils
+- Create and test initial blueprints (api, calendar)
+- Systematically move remaining routes to blueprints
+
+**Progress:** ~5% complete (infrastructure setup done, extraction in progress)
+
 ---
 
 ### 2. Duplicate User Authorization Checks - NO Query Middleware ⭐⭐⭐⭐⭐