Replaces the O(N) database operations in the `TradeExecutor`'s
`execute_decisions` SELL loop with a single `batch_remove_holdings`
call to the repository. The new repository method calculates updates
in memory, resolves duplicate operations on the same ticker, and issues
the updates via newly implemented `psycopg2.extras.execute_batch`
routines on the `SupabaseClient`.
Co-authored-by: aguzererler <6199053+aguzererler@users.noreply.github.com>
This commit optimizes `PortfolioSnapshot` instantiation when loaded from the DB or JSON dictionaries by removing the immediate `json.loads(holdings_snapshot)` parsing inside the `from_dict` constructor. Instead, it overrides `__getattribute__` to implement a lazy-loading pattern, where the `holdings_snapshot` string is only parsed into a Python dictionary the very first time the field is accessed.
This optimization ensures that parsing large JSON payloads doesn't block the instantiation of snapshots, which is particularly beneficial in workflows that load a large historical series of snapshots but never access their `holdings_snapshot` field.
Co-authored-by: aguzererler <6199053+aguzererler@users.noreply.github.com>
- tradingagents/portfolio/risk_metrics.py: pure-Python computation of
Sharpe, Sortino, VaR, max drawdown, beta, sector concentration from
PortfolioSnapshot NAV history — no LLM, no external dependencies
- tradingagents/portfolio/__init__.py: export compute_risk_metrics
- tradingagents/agents/utils/portfolio_tools.py: 4 LangChain tools
wrapping Holding.enrich, Portfolio.enrich, ReportStore APIs, and
compute_risk_metrics so agents can access portfolio data without
reimplementing computations
- tests/portfolio/test_risk_metrics.py: 48 tests for risk metrics
- tests/unit/test_portfolio_tools.py: 19 tests for portfolio tools
- tests/portfolio/test_repository.py: fix pre-existing import error
Co-authored-by: aguzererler <6199053+aguzererler@users.noreply.github.com>
Replace supabase-py stubs with working psycopg2 implementation using
Supabase pooler connection string. Implement full business logic in
repository (avg cost basis, cash accounting, trade recording, snapshots).
Add 12 unit tests + 4 integration tests (51 total portfolio tests pass).
Fix cash_pct bug in models.py, update docs for psycopg2 + pooler pattern.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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