v0.2.1

[0.2.1] — 2026-08-31

The release headline: one logical conversation, however many session
UUIDs the harness spends on it. Compaction, resume, clear and replay
each mint a new UUID, but the hooks, the wrap verdict join, and
context_served all keyed on a single one — the logical-session chain
(#183 stack, PR #203) fixes all three keying bugs, and reverses a v0.2.0
behavior along the way: SessionStart context is now served once per
session, never re-injected on resume/compact. /brief, /learn, and
weave health ride along (feature work on a patch release — a deliberate
call on the 0.x contract; the v0.3 milestone continues separately).

Changed

• Serve-once SessionStart (#175, PR #203): startup/clear serve the
  full snapshot exactly once — replay identity survives double
  registration and buffer archival; resume/compact inject nothing,
  recording a visible skipped_lifecycle event. Resume replays the
  transcript, and post-compaction retrieval is on-demand via the weave_*
  surface. Reverses v0.2.0's "resume/compact always re-inject" (#161):
  that fix ended silent holes, this one ends the ~25k-char snapshot
  re-delivery those injections cost — the biggest daily token waste in the
  system — by deletion (−585 lines), not by delta.
• Acquisition lanes tightened (#192, PR #192): event lanes gain
  freshness windows (news 7d, podcast/youtube events 14d) and the Haiku
  stage-1 funnel extends to podcast + YouTube; the repo queue actually
  dedups (url joined dedup_keys); feed_errors_detail names the
  failing feed; daily /update-hubs in cron no longer stalls on a
  question.

Added

• weave health (#120, PR #193): deterministic system-health
  collector — cron jobs joined to run evidence, per-lane queue depth,
  drain-backlog advisories (never the exit code), hook errors, digest
  freshness; --json is /brief's contract.
• /brief (#170, PR #193): daily orientation over the nightly
  digests — a watermarked deterministic collect (health, timeline,
  per-lane landings with bound cron feeders and weakest-link state,
  three-layer focus merge, attention, catalysts) rendered exactly per its
  render_plan.
• /learn (#171, PR #193): vault-grounded tutor — one retrieval
  partitioned into the user's own trajectory vs world material, test-first
  on revisit, a learn-note validator, and unanswered questions feeding the
  probe rail.
• The logical_session chain primitive (#180, PR #203): hooks stamp
  each segment note from the transcript's bridge-session row; wraps
  record a durable segments: union on the primary note; the one
  chain-membership rule (shared key or segments: match, minus siblings
  a real wrap already labeled) lives on core.vault.is_chain_sibling,
  called by both the verdict join and the RLVR exposure union.

Fixed

• Wrap verdict rail (#181, PR #203): one verdict labels exactly one
  prompt (identical-text collapse, exact match over prefix, per-channel
  label separation so re-wraps are a fixed point); events-file resolution
  matches both session identities and ranks prompt-bearing archives over
  recreated live buffers; prune can no longer GC the folder a wrap just
  wrote verdicts into; the join spans the whole compaction-segment chain.
• The probe rail actually flows (#192): wrap catch-up sees live
  buffers, not just archived ones (645 had piled up invisible); prompt
  labels reach the index (archive-before-index + explicit reprojection —
  the priority worker had been consuming pre-#101 heuristic fossils);
  the labeler's probe bar rewritten around retention.
• bin/weave no longer re-syncs (and prunes) the venv on every call
  (#164 straggler, PR #192): the silent --extra mcp sync uninstalled
  the other extras — the bug that killed the news pull for 11 days;
  weave doctor --mcp gains a venv-extras check, and the check itself
  survives absent parent packages (PR #203 pre-slice).

Internal

• Four zero-risk deletions from the purity sweep (#15, PR #197);
  dev-link upgrade docs standardize on uv sync --extra all (PR #182).