feat(desktop): add live tasks sidebar view

[tomscherrer]

Summary

• add a new Live tasks entry to the Hermes Desktop left sidebar
• wire a /tasks route into the desktop router and lazy-load the new page
• surface live todo, session, and subagent state in a dedicated dashboard

Testing

• npm run typecheck
• npx eslint src/app/tasks/index.tsx src/app/routes.ts src/app/types.ts src/app/chat/sidebar/index.tsx src/app/desktop-controller.tsx src/i18n/en.ts
• npm run build

[tomscherrer]

Follow-up fix pushed for the review findings.

What changed:

• normalized Live Tasks aggregation onto stored session IDs when runtime→stored mapping is known
• kept runtime IDs only for live todo/subagent lookups
• stopped routing "Open session" through raw runtime IDs
• fixed recency sorting to use consistent millisecond timestamps instead of mixing last_active seconds with Date.now()

Re-verified:

• npm run typecheck
• npx eslint src/app/tasks/index.tsx src/store/session.ts src/app/session/hooks/use-session-state-cache.ts
• npm run build

[teknium1]

Thanks for the Live Tasks view and for the follow-up identity normalization. The feature is not already present on current main: apps/desktop/src/app/routes.ts:10-53 provides /agents but no /tasks route.

Problems

• apps/desktop/src/app/tasks/index.tsx:205-209 aggregates every key in the runtime todo/subagent stores. Current apps/desktop/src/store/gateway-switch.ts:39-55 clears session lists and foreground state on a soft gateway switch, but does not clear those runtime stores or the new mapping introduced in apps/desktop/src/store/session.ts:231. A previous gateway's live rows can therefore be rendered after re-home.
• The PR adds the aggregation and mapping without tests; no changed PR file is a test/spec file. Please cover identity normalization and gateway-switch isolation.

Suggested changes

• Reset or scope the mapping plus todo/subagent live state at the same gateway/profile boundary used by wipeSessionListsForGatewaySwitch().
• Add focused aggregation tests for mapped and unmapped runtime ids, plus the reset path.

Automated hermes-sweeper review.

[teknium1]

This aggregates every runtime todo/subagent entry, but the soft gateway reset in store/gateway-switch.ts currently clears neither those stores nor the new stored→runtime mapping. Please scope or clear all three at the re-home boundary so a task from the prior gateway/profile cannot appear here.

[tomscherrer]

Implemented the requested follow-up and force-updated this PR onto current main.

Key changes:

• Live Tasks now uses the current $sessionStates stored/runtime identity source, preserving mapped runtime IDs and unmapped-runtime fallback behavior.
• Gateway/profile switches clear session projections, hook-owned runtime mappings, todos and their timers, subagents, watchdogs, and settle state.
• A generation guard prevents in-flight resume/create/branch/hydration work from repopulating state after a gateway reset.
• Multi-runtime snapshots are merged by durable session identity, deduplicating todos/subagents and canonicalizing compressed lineage continuations.
• /tasks is registered for both the main surface and split-pane route rendering.

Regression coverage now includes mapped and unmapped runtime IDs, runtime-only busy/attention state, overlapping runtimes, lineage continuations, stale async completion after reset, cache cleanup, gateway-switch cleanup, and split-pane routing.

Fresh verification on the updated branch:

• 220 test files passed
• 1,849 tests passed, 1 skipped
• TypeScript typecheck passed
• Desktop packaging tests passed
• Production build and macOS DMG passed
• ESLint: 0 errors (10 unrelated existing warnings)
• git diff --check passed

Ready for re-review.

[tomscherrer]

Resolved the two reported conflicts by rebasing onto current upstream main and preserving both sides of the newer resume-session changes:

• use-session-actions/index.ts: retained upstream's selected-session transcript reconciliation/activation behavior and integrated the gateway-generation invalidation guards, including the warm-cache activation update.
• use-session-actions.test.tsx: retained upstream's selected-session/on-state-update harness additions and integrated the stale-generation test override.

Fresh post-rebase verification:

• 231 test files passed
• 1,965 tests passed, 2 skipped
• TypeScript typecheck passed
• Desktop packaging tests passed
• Production build and macOS DMG passed
• ESLint: 0 errors
• git diff --check passed

GitHub now reports the PR as mergeable (mergeable: true); the remaining blocked state is not a merge conflict.