feat(dashboard): add performance and operations slices

tests/dashboard/live-console-model.test.ts

@@ -0,0 +1,41 @@
+import { describe, expect, it } from 'vitest';
+import {
+  createLiveConsoleState,
+  reduceLiveConsoleState,
+  selectVisibleConsoleEntries,
+} from '../../apps/dashboard/src/features/operations/live-console-model.js';
+
+function entry(id: string, level: 'debug' | 'info' | 'warn' | 'error', message: string) {
+  return { id, occurredAt: '2026-08-08T12:00:00.000Z', level, message };
+}
+
+describe('live console state', () => {
+  it('bounds entries, rejects duplicate IDs, and filters by level and search', () => {
+    let state = createLiveConsoleState(2);
+    state = reduceLiveConsoleState(state, { type: 'append', entry: entry('1', 'info', 'Sync started') });
+    state = reduceLiveConsoleState(state, { type: 'append', entry: entry('2', 'error', 'Matrix failed') });
+    state = reduceLiveConsoleState(state, { type: 'append', entry: entry('2', 'error', 'duplicate') });
+    state = reduceLiveConsoleState(state, { type: 'append', entry: entry('3', 'warn', 'Sync slow') });
+    state = reduceLiveConsoleState(state, { type: 'set-level', level: 'warn' });
+    state = reduceLiveConsoleState(state, { type: 'set-search', search: 'sync' });
+
+    expect(state.entries.map(({ id }) => id)).toEqual(['2', '3']);
+    expect(selectVisibleConsoleEntries(state).map(({ id }) => id)).toEqual(['3']);
+  });
+
+  it('holds bounded pending entries while paused and merges them on resume', () => {
+    let state = createLiveConsoleState(2);
+    state = reduceLiveConsoleState(state, { type: 'append', entry: entry('1', 'info', 'one') });
+    state = reduceLiveConsoleState(state, { type: 'set-paused', paused: true });
+    state = reduceLiveConsoleState(state, { type: 'append', entry: entry('2', 'info', 'two') });
+    state = reduceLiveConsoleState(state, { type: 'append', entry: entry('3', 'info', 'three') });
+    state = reduceLiveConsoleState(state, { type: 'append', entry: entry('4', 'info', 'four') });
+
+    expect(state.entries.map(({ id }) => id)).toEqual(['1']);
+    expect(state.pendingEntries.map(({ id }) => id)).toEqual(['3', '4']);
+
+    state = reduceLiveConsoleState(state, { type: 'set-paused', paused: false });
+    expect(state.entries.map(({ id }) => id)).toEqual(['3', '4']);
+    expect(state.pendingEntries).toEqual([]);
+  });
+});