feat: implement robust multi-tier text input architecture and ADB diagnostics

- Android Text Input & IME Normalization:
  - Implement progressive 3-tier input architecture in AndroidAdbDriver and AndroidDeviceController:
    - Tier 1 (Primary): Zero-dependency clipboard injection + KEYCODE_PASTE (immune to IME Pinyin interception, full Unicode/Emoji support, preserves multiline formatting).
    - Tier 2 (Broadcast): Base64 broadcast injection when ADBKeyboard is active.
    - Tier 3 (Fallback): Native ADB physical keyevent fallback.
  - Add literal newline normalization (\r\n, \n, \r) to prevent JSON escape string corruption (e.g. '10086\n' -> '10086、n').
  - Add set_clipboard method to UIAutomatorClient without auxiliary APK requirements.

- Diagnostics & System Probes:
  - Add adb_keys diagnostics probe for ADB key auth checks.
  - Integrate diagnostics into CLI doctor command.

- Admin Console & Showcase UI:
  - Improve model service and system router in admin console.
  - Enhance workspace stream view and session state in showcase UI.

apps/showcase_ui/src/app/pages/home/home.component.html

@@ -1576,13 +1576,14 @@
           <!-- Composer Bottom Action Bar -->
           <div class="composer-action-bar">
             <div class="bar-left">
-              <!-- Frosted Glass Model Toggle Capsule -->
+              <!-- Frosted Glass Architecture Toggle Capsule -->
               <div class="model-toggle-capsule">
                 <button
                   type="button"
                   class="model-toggle-btn btn-flash"
                   [class.active]="selectedProfile() === 'flash'"
                   (click)="setProfile('flash')"
+                  title="Flash: Reactive fast-loop architecture for standard app workflows (3–5s/step)"
                 >
                   <span class="material-symbols-outlined btn-icon">bolt</span>
                   <span class="btn-text">Flash</span>
@@ -1592,6 +1593,7 @@
                   class="model-toggle-btn btn-pro"
                   [class.active]="selectedProfile() === 'pro'"
                   (click)="setProfile('pro')"
+                  title="Pro: Multi-agent graph architecture with planner & closed-loop verification for complex tasks"
                 >
                   <span class="material-symbols-outlined btn-icon">psychology</span>
                   <span class="btn-text">Pro</span>
@@ -1745,7 +1747,8 @@
                     <span class="app-names-label">{{ getAppNamesDisplay(item.apps) }}</span>
                   </div>
 
-                  <span class="mode-badge" [class.mode-pro]="item.profile === 'pro'" [class.mode-flash]="item.profile === 'flash'">
+                  <span class="mode-badge" [class.mode-pro]="item.profile === 'pro'" [class.mode-flash]="item.profile === 'flash'"
+                    [title]="item.profile === 'pro' ? 'Uses ARTEMIS Pro (Multi-Agent Cognitive State Graph)' : 'Uses ARTEMIS Flash (Reactive Fast Loop)'">
                     {{ item.profile === 'pro' ? 'Pro' : 'Flash' }}
                   </span>
                 </div>

apps/showcase_ui/src/app/pages/workspace/workspace.component.html

@@ -103,8 +103,8 @@
                   rows="1"
                   [disabled]="isSubmitting"
                   [placeholder]="selectedProfile() === 'pro' 
-                    ? 'Pro: Best for complex long-running tasks, deep reasoning & video analysis' 
-                    : 'Flash: Fast execution for direct actions and tasks within 25 steps'"
+                    ? 'Pro: Multi-agent cognitive graph architecture for complex multi-step tasks' 
+                    : 'Flash: Reactive fast loop for standard app workflows within 25 steps'"
                   class="dock-textarea"
                   spellcheck="false"
                 ></textarea>
@@ -141,17 +141,17 @@
             <!-- Bottom Segmented Controls Row -->
             <div class="card-footer-row">
               <div class="footer-left-group">
-                <!-- Segmented Model Toggle (Flash / Pro) -->
-                <div class="model-profile-toggle" role="group" aria-label="Select AI Model">
+                <!-- Segmented Architecture Toggle (Flash / Pro) -->
+                <div class="model-profile-toggle" role="group" aria-label="Select Agent Architecture">
                   <button type="button" class="profile-toggle-pill" [class.active]="selectedProfile() === 'flash'"
                     (mousedown)="$event.preventDefault()" (click)="setProfile('flash', $event)"
-                    title="Flash: Fast execution for standard app workflows">
+                    title="Flash: Reactive fast-loop architecture for standard app workflows (3–5s/step)">
                     <span class="material-symbols-outlined pill-icon icon-flash">bolt</span>
                     <span class="pill-label">Flash</span>
                   </button>
                   <button type="button" class="profile-toggle-pill" [class.active]="selectedProfile() === 'pro'"
                     (mousedown)="$event.preventDefault()" (click)="setProfile('pro', $event)"
-                    title="Pro: Deep multimodal reasoning for complex multi-step tasks">
+                    title="Pro: Multi-agent cognitive graph architecture with planner & closed-loop verification for complex tasks">
                     <span class="material-symbols-outlined pill-icon icon-pro">psychology</span>
                     <span class="pill-label">Pro</span>
                   </button>

apps/showcase_ui/src/app/pages/workspace/workspace.component.ts

@@ -64,7 +64,7 @@ export class WorkspaceComponent implements OnInit {
   }
 
   /**
-   * Set model profile ('flash' vs 'pro')
+   * Set agent architecture profile ('flash' vs 'pro')
    */
   public setProfile(profile: 'flash' | 'pro', event?: MouseEvent): void {
     if (event) {