restore: bring back all custom UI enhancements from checkpoint

Restored from commit 52be710 (checkpoint before qwen oauth + todo roller):

Enhanced UI Features:
- SMART FIX button with AI code analysis
- APEX (Autonomous Programming EXecution) mode
- SHIELD (Auto-approval) mode
- MULTIX MODE multi-task pipeline interface
- Live streaming token counter
- Thinking indicator with bouncing dots animation

Components restored:
- packages/ui/src/components/chat/multi-task-chat.tsx
- packages/ui/src/components/instance/instance-shell2.tsx
- packages/ui/src/components/settings/OllamaCloudSettings.tsx
- packages/ui/src/components/settings/QwenCodeSettings.tsx
- packages/ui/src/stores/solo-store.ts
- packages/ui/src/stores/task-actions.ts
- packages/ui/src/stores/session-events.ts (autonomous mode)
- packages/server/src/integrations/ollama-cloud.ts
- packages/server/src/server/routes/ollama.ts
- packages/server/src/server/routes/qwen.ts

This ensures all custom features are preserved in source control.

packages/ui/src/stores/session-api.ts

@@ -24,6 +24,7 @@ import {
   setLoading,
   cleanupBlankSessions,
 } from "./session-state"
+import { getInstanceConfig, ensureInstanceConfigLoaded } from "./instance-config"
 import { DEFAULT_MODEL_OUTPUT_LIMIT, getDefaultModel, isModelValid } from "./session-models"
 import { normalizeMessagePart } from "./message-v2/normalizers"
 import { updateSessionInfo } from "./message-v2/session-info"
@@ -79,6 +80,11 @@ async function fetchSessions(instanceId: string): Promise<void> {
 
     const existingSessions = sessions().get(instanceId)
 
+    // Load session tasks from storage
+    await ensureInstanceConfigLoaded(instanceId)
+    const instanceData = getInstanceConfig(instanceId)
+    const sessionTasks = instanceData.sessionTasks || {}
+
     for (const apiSession of response.data) {
       const existingSession = existingSessions?.get(apiSession.id)
 
@@ -101,6 +107,7 @@ async function fetchSessions(instanceId: string): Promise<void> {
               diff: apiSession.revert.diff,
             }
           : undefined,
+        tasks: sessionTasks[apiSession.id] || [],
       })
     }
 
@@ -226,6 +233,8 @@ async function createSession(instanceId: string, agent?: string): Promise<Sessio
         inputTokens: 0,
         outputTokens: 0,
         reasoningTokens: 0,
+        cacheReadTokens: 0,
+        cacheWriteTokens: 0,
         actualUsageTokens: 0,
         modelOutputLimit: initialOutputLimit,
         contextAvailableTokens: initialContextAvailable,
@@ -284,7 +293,7 @@ async function forkSession(
     id: info.id,
     instanceId,
     title: info.title || "Forked Session",
-    parentId: info.parentID || null,
+    parentId: info.parentID || sourceSessionId,  // Fallback to source session to ensure parent-child relationship
     agent: info.agent || "",
     model: {
       providerId: info.model?.providerID || "",
@@ -329,6 +338,8 @@ async function forkSession(
       inputTokens: 0,
       outputTokens: 0,
       reasoningTokens: 0,
+      cacheReadTokens: 0,
+      cacheWriteTokens: 0,
       actualUsageTokens: 0,
       modelOutputLimit: forkOutputLimit,
       contextAvailableTokens: forkContextAvailable,