Expose the named retain strategy on the MCP retain tool, matching the
HTTP API's per-item strategy support. This allows MCP clients (Claude
Code, Claude Desktop, etc.) to specify extraction behavior per memory:
strategy: "exact" → verbatim storage, no LLM processing
strategy: "verbose" → detailed extraction
strategy: "concise" → default compressed extraction
Strategies are defined in bank config under retain_strategies.
Unknown strategy names are logged and ignored (bank default applies).
Changes:
- Add strategy param to both retain function signatures (with/without bank_id)
- Add strategy to build_content_dict
- Strategy is set in the content dict, which the engine already handles per-item
Co-authored-by: Philipp <philipp@Philipps-MacBook-Pro.local>
4285e94406