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/solo-store.ts

@@ -0,0 +1,77 @@
+import { createSignal } from "solid-js"
+import { getLogger } from "../lib/logger"
+
+const log = getLogger("solo")
+
+export interface SoloState {
+  isAutonomous: boolean
+  autoApproval: boolean
+  maxSteps: number
+  currentStep: number
+  activeTaskId: string | null
+  taskQueue: string[]
+}
+
+const [soloStates, setSoloStates] = createSignal<Map<string, SoloState>>(new Map())
+
+export function getSoloState(instanceId: string): SoloState {
+  const state = soloStates().get(instanceId)
+  if (!state) {
+    return {
+      isAutonomous: false,
+      autoApproval: false,
+      maxSteps: 50,
+      currentStep: 0,
+      activeTaskId: null,
+      taskQueue: [],
+    }
+  }
+  return state
+}
+
+export function setSoloState(instanceId: string, partial: Partial<SoloState>) {
+  setSoloStates((prev) => {
+    const next = new Map(prev)
+    const current = getSoloState(instanceId)
+    next.set(instanceId, { ...current, ...partial })
+    return next
+  })
+}
+
+export function toggleAutonomous(instanceId: string) {
+  const current = getSoloState(instanceId)
+  setSoloState(instanceId, { isAutonomous: !current.isAutonomous })
+  log.info(`Autonomous mode ${!current.isAutonomous ? "enabled" : "disabled"} for ${instanceId}`)
+}
+
+export function toggleAutoApproval(instanceId: string) {
+  const current = getSoloState(instanceId)
+  setSoloState(instanceId, { autoApproval: !current.autoApproval })
+  log.info(`Auto-approval ${!current.autoApproval ? "enabled" : "disabled"} for ${instanceId}`)
+}
+
+export function incrementStep(instanceId: string) {
+  const state = getSoloState(instanceId)
+  setSoloState(instanceId, { currentStep: state.currentStep + 1 })
+}
+
+export function resetSteps(instanceId: string) {
+  setSoloState(instanceId, { currentStep: 0 })
+}
+
+export function setActiveTaskId(instanceId: string, taskId: string | null) {
+  setSoloState(instanceId, { activeTaskId: taskId })
+}
+
+export function addToTaskQueue(instanceId: string, taskId: string) {
+  const current = getSoloState(instanceId)
+  setSoloState(instanceId, { taskQueue: [...current.taskQueue, taskId] })
+}
+
+export function popFromTaskQueue(instanceId: string): string | null {
+  const current = getSoloState(instanceId)
+  if (current.taskQueue.length === 0) return null
+  const [next, ...rest] = current.taskQueue
+  setSoloState(instanceId, { taskQueue: rest })
+  return next
+}