Load this project's compressed long-term memory. CALL THIS FIRST, at the very start of every session, before doing anything else. Returns architectural blueprints, file-coordinate anchors, and lessons learned from previous sessions so you regain full context at near-zero token cost.

Compress the current session and merge it into long-term memory. CALL THIS when the user signals they are done (exit/quit/goodbye/wrap up) OR when you sense your context window is nearing capacity. Provide your work as structured sections: blueprints (verbatim architecture/schemas/decisions), anchors (file coordinates instead of raw code), and lessons (distilled bug fixes). Never include raw code blocks — use anchors.

Stage incremental progress for crash-safety. Call this PERIODICALLY during a session — after each meaningful unit of work (a feature wired up, a bug fixed, a decision made) — so that an abrupt exit (Ctrl+C, a closed terminal, a crash) never loses more than the last few steps. It is cheap and does NOT finalize the session: pass the same structured fields as save_and_compact (blueprints/anchors/lessons + a running summary). The data is buffered durably and folded into memory automatically on the next session if the current one ends without a clean compaction.