Add SqliteSaver-based checkpointing so crashed analyses resume from the
last successful graph node instead of restarting from scratch.
- checkpointer.py: get_checkpointer(), thread_id(), has/clear_checkpoint()
- --checkpoint flag (default: off for backward compatibility)
- --clear-checkpoints flag to force fresh start
- Per-ticker SQLite DBs for parallel worker safety
- Logs 'Resuming from step N' vs 'Starting fresh'
- Clears checkpoint on successful completion (no stale state)
- Tests: crash resume + different date starts fresh
Apply review suggestions: use concise `or` pattern for API key
resolution, consolidate tests into parameterized subTest, move
import to module level per PEP 8.
GoogleClient now accepts the unified `api_key` parameter used by
OpenAI and Anthropic clients, mapping it to the provider-specific
`google_api_key` that ChatGoogleGenerativeAI expects. Legacy
`google_api_key` still works for backward compatibility.
Resolves TODO.md item #2 (inconsistent parameter handling).
- Added support for running CLI and Ollama server via Docker
- Introduced tests for local embeddings model and standalone Docker setup
- Enabled conditional Ollama server launch via LLM_PROVIDER
Clayton Brown
Yijia Xiao
CadeYu
javierdejesusda
Geeta Chauhan