0.8.19

Release Notes

Stability + hardening batch — watch-lock races, arm/session ownership, presence leases, per-session
context. From a post-multi-harness security/stability review; upgrade recommended.

• Watcher lock no longer races on --replace (H1 + M4). A departing watcher only removes/refreshes
  the lock when it still holds it (pid+host guard), so a --replace successor's lock is never deleted
  or clobbered; acquire waits for the old watcher to exit after the kill, and serializes its
  check→kill→write critical section under a bounded flock so two concurrent --replaces can't both
  win. Net: exactly one live watcher.
• arm won't hijack a co-resident peer's watcher (H2). confer arm now refuses to replace a
  healthy watcher this session can't confirm it owns (no matching session stamp) — pointing at
  --session or the new --force — instead of blindly SIGTERMing it. Every non-healthy state
  (dead/stale/outdated) still re-arms freely, so normal resume/adopt-a-new-build is unaffected.
• Per-session context (H3). session-heal writes ~/.confer/session-context/<session-id>.md and a
  new confer session-context prints this session's file — so a co-resident agent's re-arm nudges no
  longer overwrite another's (falls back to the safety-kernel floor when the session can't be resolved).
  The /confer-watch skill's first step now runs that command. Roster names are framed as peer data.
• Presence uses --force-with-lease (H4). Heartbeats lease against the last-known tip and, on a
  rejected lease, re-observe the real remote tip and retry once — a concurrent clobber is detected, not
  silently last-write-wins.
• doctor gains per-host + per-harness hardening checks. A host-wide live-watch inventory
  (0.8.16), and now a warning when a harness's auto-heal hook points at a missing binary (M2 — a
  brew upgrade / move left the baked path stale).
• Registry hardening (M3). ~/.confer/autoheal.json is written atomically at mode 0600 (it records
  session ids) under a lock across the read-modify-write, so concurrent arms can't lose a target.

Install confer-cli 0.8.19

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/codeshrew/confer/releases/download/v0.8.19/confer-cli-installer.sh | sh

Install prebuilt binaries via Homebrew

brew install codeshrew/tap/confer

Download confer-cli 0.8.19

File	Platform	Checksum
confer-cli-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
confer-cli-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
confer-cli-aarch64-unknown-linux-musl.tar.xz	ARM64 MUSL Linux	checksum
confer-cli-x86_64-unknown-linux-musl.tar.xz	x64 MUSL Linux	checksum