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/components/agent-stream/agent-stream.component.ts

@@ -20,7 +20,7 @@ import { FormsModule } from '@angular/forms';
 import { RouterLink } from '@angular/router';
 import { HttpClient } from '@angular/common/http';
 import { AgentService, StartupProgressEvent } from '../../services/agent.service';
-import { Session } from '../../core/models/session.model';
+import { Session, ModelInfo } from '../../core/models/session.model';
 import { MarkdownSegment, MarkdownLine, NoteMilestone, ParsedNote } from '../../core/models/markdown.model';
 import { StepBlock, PhaseBlock, StepEvent, ActionParam, CheckerResult } from '../../core/models/stream.model';
 
@@ -1262,6 +1262,19 @@ export class AgentStreamComponent implements AfterViewInit {
     return '';
   }
 
+  public getArchitectureTooltip(model?: ModelInfo | null): string {
+    if (!model) return 'Agent Architecture: ARTEMIS Flash (Reactive Fast Loop)';
+    const name = this.getModelDisplayName(model.name);
+    const isPro = name.toLowerCase().includes('pro');
+    const archDesc = isPro
+      ? 'ARTEMIS Pro (Multi-Agent Cognitive State Graph)'
+      : 'ARTEMIS Flash (Reactive Fast Loop)';
+    if (model.id) {
+      return `Agent Architecture: ${archDesc} · LLM: ${model.id} (${model.provider || 'google'})`;
+    }
+    return `Agent Architecture: ${archDesc}`;
+  }
+
   public formatTokenCount(tokens?: number): string {
     return formatTokenCount(tokens);
   }