Module progress 

Durable, compaction-safe progress ledger.

Long-horizon agent capability requires a persistent signal of goal progress that survives compaction, fork, and resume. The live conversation is never reloaded into context from disk, but the progress ledger is a tiny derived artifact (like manifest.json) that the harness can read on each turn to decide whether work is actually advancing toward completion.

The ledger is stored under <session_dir>/derived/progress.json and overwritten on each update — it is a single mutable summary, not an append-only log, which keeps reads O(1) and cheap.

Structs

Milestone

A single tracked milestone derived from the task tracker / plan.

ProgressLedger

Compact, durable progress signal for one session.

Enums

MilestoneStatus

Lifecycle status of a single milestone toward the session goal.

Functions

load_progress

Load the progress ledger for a session, if one has been persisted.

progress_path

Resolve the on-disk path of the progress ledger for a session.

save_progress

Persist the progress ledger for a session, creating derived/ if needed.