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* feat(daemon): auto-update CLI when idle (MUL-2100) Add a periodic poller that checks GitHub for a newer multica release every hour and self-updates when the daemon is idle, reusing the same brew-or-download upgrade path the Runtimes-page "Update" button already runs. - Refactor handleUpdate to call a shared runUpdate(target) helper so both server-triggered and auto-triggered upgrades go through the same brew detection + atomic replace + restart. - New autoUpdateLoop gates each tick on: opt-out flag, Desktop launch source, dev-build version, an in-flight update, and active tasks. The idle gate guarantees we never interrupt a running agent — busy ticks silently retry at the next interval. - Config: MULTICA_DAEMON_AUTO_UPDATE=false to disable (also via --no-auto-update), MULTICA_DAEMON_AUTO_UPDATE_INTERVAL to retune the poll period. - IsNewerVersion / IsReleaseVersion helpers in the cli package, with tests covering patch/minor/major bumps, dev-describe strings, and malformed input. - Daemon-side tests cover every skip path (updating, active tasks, fetch failure, no-newer) plus the success path that fires triggerRestart while keeping the updating flag held to the end. Co-authored-by: multica-agent <github@multica.ai> * fix(daemon): close idle race + verify checksum in auto-update (MUL-2100) Two issues raised in PR #2679 review: 1. The first idle check in tryAutoUpdate only ran before the release-metadata fetch, so a poller that won the claim race during the fetch could end up handing handleTask a task that triggerRestart was about to cancel via root- ctx cancellation. Add a strict claim barrier: runRuntimePoller now tryEnterClaim()s before ClaimTask, and tryAutoUpdate flips pauseClaims under claimMu only after observing claimsInFlight + activeTasks == 0. Pollers that were already mid-claim hold claimsInFlight > 0, so the barrier refuses to engage and the update defers to the next tick. 2. The direct-download path replaced the running binary with whatever bytes GitHub returned, without checking checksums.txt. Pull the manifest first, buffer the archive, and reject on SHA-256 mismatch before extraction. The GoReleaser config already publishes checksums.txt; we just consume it. Also tighten parseReleaseVersion so it stops accepting dev-describe shapes like "v0.1.13-5-gabcdef0" through the patch trim, matching its docstring. The auto-update loop already guards on IsReleaseVersion, but the lenient parser was a footgun and the existing test name even said "not newer" while asserting the opposite. Tests: - TestTryAutoUpdate_DefersWhenClaimInFlightAtBarrier (new race coverage) - TestTryAutoUpdate_HoldsBarrierAcrossRestart / ReleasesBarrierOnUpgradeFailure - TestTryEnterClaim_RespectsBarrier - TestFindChecksumManifestAsset / TestParseChecksumManifest / TestVerifyAssetSHA256 - TestIsNewerVersion: dev-describe cases now expect false (matches docstring) Co-authored-by: multica-agent <github@multica.ai> * chore(daemon): default auto-update poll interval to 6h (MUL-2100) 1h was overly chatty for a release that lands at most a few times a week. Operators who want a different cadence can still set MULTICA_DAEMON_AUTO_UPDATE_INTERVAL or --auto-update-interval. Co-authored-by: multica-agent <github@multica.ai> --------- Co-authored-by: multica-agent <github@multica.ai>