Update TASK.md with completed tasks

Task List Updates:
- Marked Phase 1 tasks as completed (database, classes, implementation)
- Marked Phase 2 configuration tasks as completed
- Added new Phase 1.5 section for MVP implementation and bug fixes
- Updated CA-3 line references to match Notice 4722 structure
- Added completion status indicators (✅ COMPLETED)

The task list now accurately reflects our current progress!

TASK.md

@@ -11,21 +11,21 @@
 ## Phase 1: Foundation & Database (Week 1-2)
 
 ### 1.1 Database Schema Design
-- [ ] **Task 1.1.1**: Design database schema for PCG account mappings
+- [x] **Task 1.1.1**: Design database schema for PCG account mappings ✅ **COMPLETED**
   - Create `llx_declarationtva_config` table structure
-  - Define fields for CA-3 box mappings (01, 02, 03, 05, 08)
+  - Define fields for CA-3 box mappings (A1-A5, 08, 09, 9B, 17, 20, 21, 22, 25, 26, 28, 29)
   - Add support for multiple VAT rates (20%, 10%, 5.5%, 2.1%)
   - **Estimated**: 4 hours
   - **Dependencies**: None
 
-- [ ] **Task 1.1.2**: Design declaration storage schema
+- [x] **Task 1.1.2**: Design declaration storage schema ✅ **COMPLETED**
   - Create `llx_declarationtva_declarations` table
   - Add period management fields
   - Include status tracking (draft, submitted, approved)
   - **Estimated**: 3 hours
   - **Dependencies**: Task 1.1.1
 
-- [ ] **Task 1.1.3**: Create period management table
+- [x] **Task 1.1.3**: Create period management table ✅ **COMPLETED**
   - Design `llx_declarationtva_periods` table
   - Support quarterly and monthly periods
   - Add period status and validation
@@ -33,21 +33,21 @@
   - **Dependencies**: None
 
 ### 1.2 Core Class Structure
-- [ ] **Task 1.2.1**: Create DeclarationTVA main class
+- [x] **Task 1.2.1**: Create DeclarationTVA main class ✅ **COMPLETED**
   - File: `core/class/declarationtva.class.php`
   - Basic CRUD operations
   - Period management methods
   - **Estimated**: 6 hours
   - **Dependencies**: Task 1.1.1, 1.1.2
 
-- [ ] **Task 1.2.2**: Create DeclarationTVA_Config class
+- [x] **Task 1.2.2**: Create DeclarationTVA_Config class ✅ **COMPLETED**
   - File: `core/class/declarationtva_config.class.php`
   - PCG account mapping management
   - Validation methods
   - **Estimated**: 4 hours
   - **Dependencies**: Task 1.1.1
 
-- [ ] **Task 1.2.3**: Create DeclarationTVA_Period class
+- [x] **Task 1.2.3**: Create DeclarationTVA_Period class ✅ **COMPLETED**
   - File: `core/class/declarationtva_period.class.php`
   - Period creation and validation
   - Date range management
@@ -55,14 +55,14 @@
   - **Dependencies**: Task 1.1.3
 
 ### 1.3 Database Implementation
-- [ ] **Task 1.3.1**: Update SQL schema file
+- [x] **Task 1.3.1**: Update SQL schema file ✅ **COMPLETED**
   - File: `sql/dolibarr_allversions.sql`
   - Add all table creation statements
   - Include indexes and constraints
   - **Estimated**: 2 hours
   - **Dependencies**: Tasks 1.1.1, 1.1.2, 1.1.3
 
-- [ ] **Task 1.3.2**: Create database migration scripts
+- [x] **Task 1.3.2**: Create database migration scripts ✅ **COMPLETED**
   - Handle version upgrades
   - Data migration procedures
   - **Estimated**: 3 hours
@@ -70,17 +70,57 @@
 
 ---
 
+## Phase 1.5: MVP Implementation & Bug Fixes ✅ **COMPLETED**
+
+### 1.5.1 Database Issues Resolution
+- [x] **Task 1.5.1**: Fix database column name issues ✅ **COMPLETED**
+  - Fixed 'Unknown column id' error by using 'rowid' instead of 'id'
+  - Updated all SQL queries to use correct column names
+  - **Estimated**: 2 hours
+  - **Dependencies**: Task 1.3.1
+
+- [x] **Task 1.5.2**: Fix duplicate entry constraints ✅ **COMPLETED**
+  - Resolved duplicate entry constraint violations
+  - Implemented proper handling of existing inactive records
+  - Added reactivation logic for existing mappings
+  - **Estimated**: 3 hours
+  - **Dependencies**: Task 1.5.1
+
+- [x] **Task 1.5.3**: Implement automatic table creation ✅ **COMPLETED**
+  - Added fallback table creation in setup page
+  - Ensures tables exist even if module activation fails
+  - Silent table creation without user intervention
+  - **Estimated**: 2 hours
+  - **Dependencies**: Task 1.5.2
+
+### 1.5.2 Form Processing & Data Persistence
+- [x] **Task 1.5.4**: Fix form submission processing ✅ **COMPLETED**
+  - Resolved account mapping save/load issues
+  - Fixed multi-select form data handling
+  - Implemented proper form validation
+  - **Estimated**: 4 hours
+  - **Dependencies**: Task 1.5.2
+
+- [x] **Task 1.5.5**: Clean up debug code and messages ✅ **COMPLETED**
+  - Removed all debugging output from production code
+  - Cleaned up user interface
+  - Streamlined database operations
+  - **Estimated**: 1 hour
+  - **Dependencies**: Task 1.5.4
+
+---
+
 ## Phase 2: Configuration Interface (Week 3-4)
 
 ### 2.1 Setup Page Enhancement
-- [ ] **Task 2.1.1**: Redesign admin setup page
-  - File: `admin/setup.php`
+- [x] **Task 2.1.1**: Redesign admin setup page ✅ **COMPLETED**
+  - File: `admin/setup_mvp.php`
   - Replace generic parameters with CA-3 specific configuration
   - Add PCG account selection interface
   - **Estimated**: 8 hours
   - **Dependencies**: Task 1.2.2
 
-- [ ] **Task 2.1.2**: Create PCG account mapping interface
+- [x] **Task 2.1.2**: Create PCG account mapping interface ✅ **COMPLETED**
   - Multi-select dropdown for each CA-3 line
   - Account search and filtering from Dolibarr's chart of accounts
   - Account validation against existing accounts
@@ -89,7 +129,7 @@
   - **Estimated**: 15 hours
   - **Dependencies**: Task 2.1.1
 
-- [ ] **Task 2.1.3**: Implement multiple account selection
+- [x] **Task 2.1.3**: Implement multiple account selection ✅ **COMPLETED**
   - Connect to Dolibarr's `llx_accounting_account` table
   - Multi-select interface with search functionality
   - Account preview with current balances