# Documentation Update Summary - Issue #6: Trade Model (DB-5)

## Objective

Update documentation to reflect the implementation of the Trade model with Capital Gains Tax (CGT) tracking support for Australian tax compliance.

## Files Modified

### 1. CHANGELOG.md
**Location**: `/Users/andrewkaszubski/Dev/Spektiv/CHANGELOG.md`
**Section**: `## [Unreleased] ### Added`

Added comprehensive 34-line entry with 14 detailed feature points:
- Trade model with BUY/SELL sides and execution status tracking
- TradeSide, TradeStatus, TradeOrderType enums for type-safe operations
- Capital Gains Tax (CGT) support for Australian tax compliance
- 50% CGT discount eligibility for holdings >12 months
- Australian financial year (FY) calculation (July-June)
- Multi-currency support with FX rate to AUD conversion
- Database migration 005_add_trade_model.py
- Comprehensive validators and event listeners
- Unit test suite (65 tests, 2054 lines)
- Integration test suite (22 tests, 1235 lines)
- Total: 87 tests added

### 2. PROJECT.md
**Location**: `/Users/andrewkaszubski/Dev/Spektiv/PROJECT.md`
**Section**: `Active Work → Phase 1: Database (Issues #2-7)`

Marked Phase 1 Database issues as completed:
- [x] #2 Database setup - SQLAlchemy + PostgreSQL/SQLite
- [x] #3 User model - profiles, tax jurisdiction
- [x] #4 Portfolio model - live, paper, backtest
- [x] #5 Settings model - risk profiles, alerts
- [x] #6 Trade model - CGT tracking
- [ ] #7 Alembic migrations (pending)

## Content Verification

### File Existence
- [x] `/Users/andrewkaszubski/Dev/Spektiv/spektiv/api/models/trade.py` (20.9 KB)
- [x] `/Users/andrewkaszubski/Dev/Spektiv/migrations/versions/005_add_trade_model.py` (11.2 KB)
- [x] `/Users/andrewkaszubski/Dev/Spektiv/tests/unit/api/test_trade_model.py` (75.7 KB, 65 tests)
- [x] `/Users/andrewkaszubski/Dev/Spektiv/tests/integration/api/test_trade_integration.py` (47.0 KB, 22 tests)

### Code Cross-references
- [x] Trade model exports: `spektiv/api/models/__init__.py`
  - Trade, TradeSide, TradeStatus, TradeOrderType all exported
- [x] Portfolio trades relationship: `spektiv/api/models/portfolio.py:202-205`
  - Cascade delete configured correctly
  - Proper back_populates reference

### Line Number Validation in CHANGELOG
All file:line references verified:
- Line 86: TradeSide enum definition
- Line 201-305: CGT field definitions
- Line 306-325: Currency field definitions
- Line 418-441: tax_year property
- Line 443-475: Trade property methods
- Line 477-585: Comprehensive validators
- Line 596-665: Event listener validation
- Portfolio line 202-205: trades relationship with cascade delete

### Test Count Verification
- [x] Unit tests: 65 confirmed (grep "def test_" count)
- [x] Integration tests: 22 confirmed
- [x] Total: 87 tests (65 + 22)

## Documentation Standards Compliance

- Format: Follows Keep a Changelog conventions
- Cross-references: File paths with line:ranges (e.g., `[file:spektiv/api/models/trade.py:86-137]`)
- Test documentation: Includes file locations with test counts and line counts
- Migration documentation: References migration file with version number (005)
- Absolute paths: All paths use absolute form starting from project root

## Scope & Architecture Alignment

### SCOPE Section
PROJECT.md already includes:
- "Australian CGT calculations" with 50% discount for >12 month holdings
- "Portfolio tracking with mark-to-market valuation"
- "User database for profiles, portfolios, settings"

Trade model directly supports all these in-scope requirements.

### ARCHITECTURE Section
PROJECT.md directory structure already lists:
```
database/
  models/
    trade.py  (✓ Implemented)
```

Trade model fully implements the portfolio layer as documented.

## Summary of Changes

Documentation successfully updated for Issue #6 implementation:

1. **CHANGELOG.md**: 34-line entry with 14 feature points and proper file:line references
2. **PROJECT.md**: Issue tracking updated to reflect 5 completed database issues
3. **Validation**: All file paths, line numbers, and test counts verified
4. **Standards**: Follow Keep a Changelog conventions with proper cross-referencing

No additional documentation was needed because:
- SCOPE section already covers CGT requirements
- ARCHITECTURE section already lists trade.py
- API documentation will be auto-generated from docstrings
- Test documentation integrated into CHANGELOG with full coverage details

### Final Statistics
- Files updated: 2
- Files created: 1 (this summary)
- Issues marked completed: 5 (#2-#6)
- Total tests documented: 87 (65 unit + 22 integration)
- Cross-references verified: 11 file:line locations
- All validations: Passed