refactor: prune dead IPC surface and orphaned modules

Drop code that nothing consumed. Verified by full renderer+shared grep:
every removed channel had zero callers via window.agentCompany.* and
zero references from desktop-api types. No backend internal use either —
the database/API-server layers keep their methods, only the IPC exposure
goes.

Removed IPC handlers (26 total):

  Thread CRUD surface (12) — writes happen inside the backend
    createThread, listThreads, addThreadEvent,
    setThreadWaitState, resolveThreadWaitState,
    addParticipant, removeParticipant, listParticipants,
    subscribeThread, unsubscribeThread,
    listSubscriptions, listSubscribedThreads
    (kept reads: getThread, listThreadEvents, listThreadWaitStates)

  Half-implemented features (13)
    saveSecret, listComments, getAgentMetrics, getApiPort,
    listWakeupRequests, listAgentMessages, autoAssignTask,
    listRunEvents, recoveryDismiss,
    getHeartbeatPolicy, setHeartbeatPolicy,
    getRuntimeState, setRuntimeState

  Whole vertical slice: openConnectorAuthTerminal
    IPC handler + channel + preload + DesktopApi type +
    connector-auth-service function + useConnectorCallbacks
    handleLoginConnector + OnboardingContext.onLoginConnector +
    OnboardingWizard wiring. Pi-mono has no CLI auth flow;
    the no-op that "returned false for legacy UI compatibility"
    had no legacy UI left.

Orphaned modules (zero importers in repo):
  src/main/runtime-env.ts
  src/main/database-stale-recovery.ts

Dead schema files (only referenced by their own barrel re-export):
  schemas-participants, schemas-subscriptions, schemas-heartbeat,
  schemas-run-events, schemas-runtime-state, schemas-wakeup

Renderer leftovers:
  .activity-row-enter CSS + its two unreferenced keyframes
  5 orphan i18n keys (app.console, app.refresh, app.expand,
  activity.timeline, auto.trigger) left over from earlier feature
  deletions

Also update two unit tests that mocked openConnectorAuthTerminal in
the RegisterCoreHandlersDependencies pick.

src/renderer/components/company-onboarding/OnboardingContext.tsx

@@ -59,7 +59,6 @@ export interface OnboardingConnectorsContextValue {
     model: string | null,
     notes?: string,
   ) => void;
-  onLoginConnector: (connectorId: string) => void;
 
   selectedConnectorId: ConnectorId | "";
   setSelectedConnectorId: (value: ConnectorId | "") => void;

src/renderer/components/company-onboarding/OnboardingWizard.tsx

@@ -83,7 +83,7 @@ export function CompanyOnboarding({
     }
   }, [step, nodeStatus, checkNode]);
 
-  const { handleTestConnector, handleSaveConnector, handleLoginConnector, handleInstallCommand } =
+  const { handleTestConnector, handleSaveConnector, handleInstallCommand } =
     useConnectorCallbacks(connectors);
 
   const {
@@ -208,7 +208,6 @@ export function CompanyOnboarding({
       hasAtLeastOneReady,
       onTestConnector: (id) => void handleTestConnector(id),
       onSaveConnector: (id, env, model, notes) => void handleSaveConnector(id, env, model, notes),
-      onLoginConnector: (id) => void handleLoginConnector(id),
       selectedConnectorId,
       setSelectedConnectorId,
       selectedModel,
@@ -228,7 +227,6 @@ export function CompanyOnboarding({
       hasAtLeastOneReady,
       handleTestConnector,
       handleSaveConnector,
-      handleLoginConnector,
       selectedConnectorId,
       setSelectedConnectorId,
       selectedModel,

src/renderer/components/company-onboarding/useConnectorCallbacks.ts

@@ -36,30 +36,6 @@ export function useConnectorCallbacks(connectors: ProfileSnapshot["connectors"])
     }
   }, [connectors]);
 
-  const handleLoginConnector = useCallback(async (connectorId: string) => {
-    try {
-      unwrap(await window.agentCompany.openConnectorAuthTerminal(connectorId as ConnectorId));
-    } catch (error) {
-      console.warn(
-        `[onboarding/useConnectorCallbacks] openConnectorAuthTerminal(${connectorId}) failed: ${error instanceof Error ? error.message : String(error)}`,
-      );
-      return;
-    }
-    // Poll connector health after login terminal opens (same pattern as ConnectorEditor)
-    let attempts = 0;
-    const poll = setInterval(async () => {
-      attempts++;
-      if (attempts > 12) { clearInterval(poll); return; }
-      try {
-        unwrap(await window.agentCompany.testConnector(connectorId as ConnectorId));
-      } catch (error) {
-        console.warn(
-          `[onboarding/useConnectorCallbacks] post-login testConnector(${connectorId}) failed (attempt ${attempts}): ${error instanceof Error ? error.message : String(error)}`,
-        );
-      }
-    }, 5000);
-  }, []);
-
   const handleInstallCommand = useCallback(async (commandKey: z.infer<typeof openTerminalCommandSchema>["commandKey"]) => {
     try {
       unwrap(await window.agentCompany.openTerminalCommand({ commandKey }));
@@ -88,5 +64,5 @@ export function useConnectorCallbacks(connectors: ProfileSnapshot["connectors"])
     }, 5000);
   }, [connectors]);
 
-  return { handleTestConnector, handleSaveConnector, handleLoginConnector, handleInstallCommand };
+  return { handleTestConnector, handleSaveConnector, handleInstallCommand };
 }

src/renderer/i18n/en.ts

@@ -39,10 +39,7 @@ export const en: Record<string, string> = {
   "app.selectCompany": "Select company",
   "app.newCompany": "New company",
   "app.commandPalette": "Command palette",
-  "app.refresh": "Refresh",
-  "app.console": "Console",
   "app.collapse": "Collapse",
-  "app.expand": "Expand",
   "app.noResults": "No results for",
   "app.clear": "Clear",
   "app.search": "Search sections, agents, tasks, goals, projects...",
@@ -358,9 +355,6 @@ export const en: Record<string, string> = {
   "costs.recentEntries": "Recent cost entries",
   "costs.budgetPosture": "Budget posture",
 
-  // ── Activity page ──
-  "activity.timeline": "Activity timeline",
-
   // ── Workspaces page ──
   "workspaces.registry": "Workspace registry",
   "workspaces.controlCenter": "Workspace control center",
@@ -815,7 +809,6 @@ export const en: Record<string, string> = {
   "auto.newRuleTitle": "New Automation Rule",
   "auto.ruleName": "Rule Name",
   "auto.ruleDescription": "Description",
-  "auto.trigger": "Trigger",
   "auto.conditionsJson": "Conditions (JSON)",
   "auto.action": "Action",
   "auto.actionConfigJson": "Action Configuration (JSON)",

src/renderer/i18n/zh.ts

@@ -39,10 +39,7 @@ export const zh: Record<string, string> = {
   "app.selectCompany": "选择公司",
   "app.newCompany": "新建公司",
   "app.commandPalette": "命令面板",
-  "app.refresh": "刷新",
-  "app.console": "控制台",
   "app.collapse": "收起",
-  "app.expand": "展开",
   "app.noResults": "未找到匹配结果",
   "app.clear": "清除",
   "app.search": "搜索版块、智能体、任务、目标、项目...",
@@ -358,9 +355,6 @@ export const zh: Record<string, string> = {
   "costs.recentEntries": "近期费用",
   "costs.budgetPosture": "预算概况",
 
-  // ── 活动页面 ──
-  "activity.timeline": "活动时间线",
-
   // ── 工作区页面 ──
   "workspaces.registry": "工作区注册表",
   "workspaces.controlCenter": "工作区控制中心",
@@ -815,7 +809,6 @@ export const zh: Record<string, string> = {
   "auto.newRuleTitle": "新建自动化规则",
   "auto.ruleName": "规则名称",
   "auto.ruleDescription": "描述",
-  "auto.trigger": "触发器",
   "auto.conditionsJson": "条件（JSON）",
   "auto.action": "动作",
   "auto.actionConfigJson": "动作配置（JSON）",

src/renderer/styles.css

@@ -207,48 +207,6 @@
   transition: max-width 200ms cubic-bezier(0.16, 1, 0.3, 1);
 }
 
-/* Dashboard activity row entry motion */
-@keyframes dashboard-activity-enter {
-  0% {
-    opacity: 0;
-    transform: translateY(-14px) scale(0.985);
-    filter: blur(4px);
-  }
-  62% {
-    opacity: 1;
-    transform: translateY(2px) scale(1.002);
-    filter: blur(0);
-  }
-  100% {
-    opacity: 1;
-    transform: translateY(0) scale(1);
-    filter: blur(0);
-  }
-}
-
-@keyframes dashboard-activity-highlight {
-  0% {
-    box-shadow: inset 2px 0 0 var(--primary);
-    background-color: color-mix(in oklab, var(--accent) 55%, transparent);
-  }
-  100% {
-    box-shadow: inset 0 0 0 transparent;
-    background-color: transparent;
-  }
-}
-
-.activity-row-enter {
-  animation:
-    dashboard-activity-enter 520ms cubic-bezier(0.16, 1, 0.3, 1),
-    dashboard-activity-highlight 920ms cubic-bezier(0.16, 1, 0.3, 1);
-}
-
-@media (prefers-reduced-motion: reduce) {
-  .activity-row-enter {
-    animation: none;
-  }
-}
-
 /* MDXEditor theme integration */
 .paperclip-mdxeditor-scope,
 .paperclip-mdxeditor {