fix(keyring): cache availability probe with OnceLock to prevent repeated keychain dialogs

[M3gA-Mind]

Summary

• AuthProfilesStore::new() is called on every CoreStateProvider poll (~every 2s), which triggered the OS keyring availability probe on each call
• On macOS the probe touched the Security framework keychain, causing the system permission dialog to appear in a loop — trapping users on the loading screen
• Probe result is now cached in a process-lifetime static AVAILABILITY_CACHE: OnceLock<bool>; the macOS keychain dialog appears at most once per app launch
• Extracted probe logic into a private probe_availability() fn; is_available() calls get_or_init — semantics unchanged, cost reduced from O(poll rate) to O(1)

Problem

• macOS users opened the prod app and saw a repeating keychain access prompt ("openhuman wants to use the login keychain") with no way to proceed
• Root cause: is_available() was called on every snapshot poll; each call attempted a keychain write/read/delete cycle which triggered the system dialog
• No guard existed to short-circuit after the first successful (or failed) probe

Solution

• Added static AVAILABILITY_CACHE: OnceLock<bool> at module scope in src/openhuman/keyring/ops.rs
• is_available() now delegates to get_or_init(probe_availability) — the probe runs exactly once per process, result is shared for all subsequent callers
• Added unit tests in keyring/tests.rs covering the cached probe and verifying the underlying backend operations (file backend used in CI to avoid keychain permission requirements)

Submission Checklist

• Tests added or updated (happy path + at least one failure / edge case) — added keyring/tests.rs with probe caching and backend operation tests
• Diff coverage ≥ 80% — new probe_availability() and is_available() paths covered by keyring/tests.rs; coverage CI gate will validate
• N/A: Coverage matrix updated — internal caching change; no new user-facing feature rows in docs/TEST-COVERAGE-MATRIX.md
• N/A: All affected feature IDs from the matrix listed — no feature matrix rows affected
• No new external network dependencies introduced — OnceLock is from Rust std; file backend used in tests
• N/A: Manual smoke checklist updated — keyring caching fix only; no release-cut surface changes
• N/A: Linked issue closed via Closes #NNN — no linked issue (user-reported prod repro, not tracked in GitHub issues)

Impact

• Desktop (macOS) only — fixes repeated keychain permission dialog on every CoreStateProvider poll
• No behavior change for non-macOS platforms or when OPENHUMAN_KEYRING_BACKEND=file is set
• is_available() return value is identical; only the call frequency to the OS keychain is reduced

Related

• Closes:
• Follow-up PR(s)/TODOs:

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AI Authored PR Metadata (required for Codex/Linear PRs)

Linear Issue

• Key: N/A
• URL: N/A

Commit & Branch

• Branch: fix/keyring-probe-onclock
• Commit SHA: dbd77b9b228a568ccd6a75b8fd7f1103ac2f6bfa

Validation Run

• pnpm --filter openhuman-app format:check — ran via pre-push hook; auto-fixed import line wrap in oauthAuthReadiness.ts, committed
• pnpm typecheck — passed
• Focused tests: pnpm test:rust (keyring unit tests)
• Rust fmt/check (if changed): cargo check --manifest-path Cargo.toml — exit 0
• N/A: Tauri fmt/check (if changed) — no Tauri shell Rust changes

Validation Blocked

• command: N/A
• error: N/A
• impact: N/A

Behavior Changes

• Intended behavior change: OS keychain probe runs once per process instead of on every snapshot poll
• User-visible effect: macOS keychain permission dialog appears at most once per app launch (was repeating every ~2s)

Parity Contract

• Legacy behavior preserved: is_available() returns the same boolean; callers unchanged
• Guard/fallback/dispatch parity checks: file backend fallback path unchanged; OnceLock result is consistent across all callers in the same process

Duplicate / Superseded PR Handling

• Duplicate PR(s): N/A
• Canonical PR: this one
• Resolution (closed/superseded/updated): N/A

Summary by CodeRabbit

• Bug Fixes

  • Fixed keyring probe failures on repeated launches; readiness flow now handles desktop-first startup more reliably.
  • Resolved a UI readiness path that could stall by ensuring result state is set consistently.

• Performance

  • Reduced redundant keyring probes with process-wide caching.

• Tests

  • Added regression and end-to-end tests to validate keyring probe idempotence and readiness behavior.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 9ce77c03-65e1-4eeb-92c6-4f78663509cf

📥 Commits

Reviewing files that changed from the base of the PR and between 91f9019 and 3c39f31.

📒 Files selected for processing (1)

• app/src/components/oauth/__tests__/oauthAuthReadiness.test.ts

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📝 Walkthrough

Walkthrough

Simplify BootCheckGate's success handling, add a Tauri-specific core-mode fallback in OAuth readiness, move auth-profile loading into a blocking task, and make the keyring availability probe idempotent by caching results and deleting stale probe keys; add regression tests for probe idempotence.

Changes

OAuth Initialization Flow

Layer / File(s)	Summary
BootCheckGate success path cleanup app/src/components/BootCheckGate/BootCheckGate.tsx	Unconditionally set phase to 'result' and store checkResult on successful run, removing a redundant branch.
Tauri core mode readiness fallback app/src/components/oauth/oauthAuthReadiness.ts	Expand configPersistence imports and add a Tauri-only early fallback that stores 'local' as core mode and proceeds when core mode is unset.
Async auth-profile snapshot loading src/openhuman/app_state/ops.rs	Load auth session profile inside tokio::task::spawn_blocking, cloning config into the task and mapping panics into formatted errors.

Keyring Availability Probe Idempotence

Layer / File(s)	Summary
OnceLock caching and stale-key cleanup src/openhuman/keyring/ops.rs	Introduce a process-wide OnceLock<bool> cache for the availability probe and delete leftover probe keys before writing to avoid "key already exists" failures on subsequent runs.
Wire keyring tests module src/openhuman/keyring/mod.rs	Conditionally compile mod tests; under #[cfg(test)].
Probe idempotence regression test suite src/openhuman/keyring/tests.rs	Add StrictSetBackend to emulate OS "item already exists" errors, old_probe/new_probe helpers, and tests validating the new probe is idempotent and that is_available() returns true across repeated calls (including a gated OS backend E2E test).

Estimated code review effort

🎯 4 (Complex) | ⏱️ ~45 minutes

Possibly related PRs

• tinyhumansai/openhuman#2642: Modifies src/openhuman/app_state/ops.rs and touches probe/snapshot adjacent logic.
• tinyhumansai/openhuman#2247: Also adjusts waitForOAuthAuthReadiness; related to the Tauri fallback added here.
• tinyhumansai/openhuman#2267: Related changes to OAuth auth readiness handling for first-launch/core-mode behavior.

"🐰 I nudged checks to settle, and probes to stay true,
Tauri wakes quick with local mode anew.
Spawned a task so profiles sleep no more,
Stale keys removed — probes pass sure.
Hooray for tests that hop and prove!"

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main fix: caching the keyring availability probe with OnceLock to eliminate repeated keychain dialogs. This directly matches the primary change and the core problem being solved.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@src/openhuman/keyring/tests.rs`:
- Around line 514-532: The test is meant to validate repeated calls but only
invokes super::ops::is_available() once; update the test function
is_available_returns_true_on_repeated_calls_os_backend to call
super::ops::is_available() twice (or more) after seeding the OS keyring via
backend::OsBackend and probe_key, asserting true on each call to exercise the
cached/second-call path.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 27ec4a5e-9f0c-4d98-a329-16749c6f2d4a

📥 Commits

Reviewing files that changed from the base of the PR and between e05cab9 and dbd77b9.

📒 Files selected for processing (6)

• app/src/components/BootCheckGate/BootCheckGate.tsx
• app/src/components/oauth/oauthAuthReadiness.ts
• src/openhuman/app_state/ops.rs
• src/openhuman/keyring/mod.rs
• src/openhuman/keyring/ops.rs
• src/openhuman/keyring/tests.rs