feat(desktop): report Zotero desktop presence and wait for it - #49
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… polling `zotio desktop status` reports whether Zotero desktop runs from two signals kept apart: the profile lock (an fcntl write lock on .parentlock on macOS and Linux, probed read-only with F_GETLK; an exclusive, delete-on-close parent.lock handle on Windows, probed with a share-mode open) says the process is up, and one /connector/ping says the connector accepts requests, which imports need. running = lock held or connector answered; connector_reachable = the ping answered; state is ready, starting (process up, connector silent: the start-up window, or a disabled connector) or stopped. It exits 0 whatever it finds. `zotio desktop wait` returns at once when the connector answers, and otherwise sleeps on filesystem notifications for the profile and data directories, probing only after a change settles. Once the lock is seen held it re-checks the connector on a capped backoff (250ms..2s) for up to 2 minutes, because the connector listens seconds after the lock and its start writes no file; after that only events cause probes. --timeout exits 14 (new code: a bounded wait ran out), no discoverable profile exits 9, and --watch-stdin exits when a supervisor's pipe closes. It is mcp:hidden because it blocks, like watch and tail. Profile discovery reuses zoteroprefs: Profiles() exposes the existing profiles.ini discovery (ZOTERO_PROFILE_DIR pin included) and DataDir() mirrors Zotero.DataDirectory.init (dataDir only under useDataDir, else <home>/Zotero, with the Snap/Flatpak home on Linux). prefs.js reading is factored into readPrefs so both paths share the bounded, UTF-8-checked reader. New dependency github.com/fsnotify/fsnotify v1.10.1 (BSD-3-Clause; inotify, kqueue, ReadDirectoryChangesW). Its only dependency, golang.org/x/sys, was already linked. THIRD_PARTY_LICENSES.txt, the command/capability reference and the MCP surface golden are regenerated.
A Zotero that holds its profile lock but whose connector cannot take requests was reported as "starting" forever, so a caller told the user to wait, or to open a Zotero that was already open. Seen live: the process held its lock for 1h40m while /connector/ping accepted the connection and never answered, and the window's accessibility tree failed too. "starting" now lasts only for a 2-minute startup window measured from the lock time. Mozilla's lock open truncates .parentlock, so its mtime is the lock time (measured 3s after process start on a file created years earlier); Windows recreates parent.lock at each launch. Past the window the state is "unresponsive" when the connector port accepts and does not answer usefully (timeout, reset, non-200), or "connector_off" when the dial is refused. profiles[].lock_since reports the lock time. desktop wait no longer goes silent after its confirm window: when Zotero is, or becomes, unresponsive or connector_off it returns at once with exit 15 and that state as outcome, because no filesystem change announces a recovery; the caller tells the user and re-waits. Closed Zotero still sleeps on events with no polling.
…nsive One 3s ping timeout past the startup window was enough to report "unresponsive", but Zotero's connector runs on its main thread, which a large sync can hold for seconds; papio would then tell the user to restart a Zotero that was only busy. A one-shot check past the window now reports "busy" for a connector that accepts and does not answer. "unresponsive" is reported only by desktop wait, after the connector stayed silent for at least 60s across 3 or more checks (re-checked every 20s with a 10s ping); any answer in between ends the wait as ready. Wait results carry stalled_since. Refusal is weak evidence too. Measured against the hung Zotero: it listened on 127.0.0.1 only, [::1] refused, and Go reports the first address's error, so the ping said "connection refused" for a held port; 127.0.0.1 also refused some back-to-back connects. connector_off now needs every resolved address to refuse repeated dials (desktop.ListeningOn), and in wait the whole stall span; a stall in which any check found a listener is unresponsive. While starting or busy, the re-check timer alone drives probes, so a sync's constant WAL writes no longer turn into extra pings. Closed Zotero still sleeps on filesystem events with no polling.
The exit-code table now names `desktop wait` (exits 14 and 15), so the SKILL drift test scopes the table's bare flags to that command and rejects --fail-on and --fail-on-unknown. Name the commands that own them: library health and items bibcheck.
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📝 WalkthroughWalkthroughAdds ChangesDesktop presence and readiness
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~60 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant DesktopCLI
participant Wait
participant fsnotify
participant Prober
participant Connector
DesktopCLI->>Wait: Start wait with watch directories
Wait->>fsnotify: Watch profile and data directories
Wait->>Prober: Run initial presence probe
Prober->>Connector: Ping local connector
Connector-->>Prober: Return response or connection error
fsnotify-->>Wait: Report filesystem event
Wait->>Prober: Recheck presence
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 60.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 75 functions across 18 files. (9 skipped: 9 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Inline comments:
In `@internal/cli/desktop.go`:
- Line 271: Update the connector timeout passed to connector.New in the probe
setup so it uses the largest probe bound, allowing the per-probe context
deadline to control longer stall re-checks. Also update the CLI help text to
state that pings are bounded to 3 seconds initially and 10 seconds after the
startup window, then regenerate the command reference documentation.
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CHANGELOG.mdREADME.mdSKILL.mdTHIRD_PARTY_LICENSES.txtdev/zotero-api-coverage.mddocs/reference/capabilities.mddocs/reference/commands.mdgo.modinternal/cli/desktop.gointernal/cli/desktop_test.gointernal/cli/group_fanout.gointernal/cli/helpers.gointernal/cli/root.gointernal/cli/which.gointernal/desktop/helper_test.gointernal/desktop/lock_other.gointernal/desktop/lock_unix.gointernal/desktop/lock_windows.gointernal/desktop/lockhold_unix_test.gointernal/desktop/lockhold_windows_test.gointernal/desktop/presence.gointernal/desktop/presence_test.gointernal/desktop/wait.gointernal/desktop/wait_test.gointernal/mcp/testdata/surface_mirror.golden.jsoninternal/zoteroprefs/presence_discovery_test.gointernal/zoteroprefs/zoteroprefs.go
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The prober's connector client carried a 3s http.Client timeout, which caps a request regardless of its context deadline. desktop wait gives each stall re-check a 10s ping, so every re-check was cut at 3s and a Zotero answering in 4s during a sync counted as silent toward exit 15. The client now allows the longest probe bound and each probe's context deadline governs. Help text states both bounds. Found by CodeRabbit on #49.
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Actioned the CodeRabbit finding in 1f0928b: the prober's connector client timeout capped every 10s stall re-check at 3s. The client now allows the longest probe bound, and each probe's context deadline governs. The new regression test fails on the old code ( |
enieuwy
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Sep 24, 2026
Two additions, no breaking entries: desktop status and desktop wait, with new exit codes 14 (a bounded wait timed out) and 15 (Zotero open, connector hung or off). Both codes belong to desktop wait alone, so no existing command changes its exit code, JSON shape or behaviour. CodeRabbit on #49 found one defect before merge: the connector client timeout capped the 10s stall re-check ping at 3s. Fixed with a fail-first regression test. papio is unaffected: the one command it runs, items tags add|remove, is unchanged.
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zotio desktop statusandzotio desktop wait.desktop statusreads the profile lock of each discovered Zotero profile and pings the local connector once.stateisready,starting,busy,connector_offorstopped. It exits 0 whatever it finds.desktop waitreturns when the connector answers. While Zotero is closed it sleeps on filesystem notifications (fsnotify) instead of polling. A connector silent for 60s across 3+ checks ends the wait with exit 15 andoutcomeunresponsiveorconnector_off.github.com/fsnotify/fsnotifyv1.10.1 (BSD-3-Clause);THIRD_PARTY_LICENSES.txt, command reference and MCP golden regenerated.desktop waitis hidden from MCP because it blocks.desktop wait.Local gates: tidy, lockstep, format, lint, race tests per package, six-target cross-build, docs-drift, notices-drift, registry-manifest, secrets. Smoke:
desktop statusanddesktop wait --timeout 2sagainst a running Zotero 7 reportreadyand exit 0.Summary by CodeRabbit
zotio desktop statusto report whether Zotero is running and whether its connector is reachable.zotio desktop waitto wait for connector readiness, with timeout and stdin-close options.