feat: Add DevLoop automation and HTML Reports

## DevLoop - Closed-Loop Development System
- Orchestrator for plan → build → test → analyze cycle
- Gemini planning via OpenCode CLI
- Claude implementation via CLI bridge
- Playwright browser testing integration
- Test runner with API, filesystem, and browser tests
- Persistent state in .devloop/ directory
- CLI tool: tools/devloop_cli.py

Usage:
  python tools/devloop_cli.py start 'Create new feature'
  python tools/devloop_cli.py plan 'Fix bug in X'
  python tools/devloop_cli.py test --study support_arm
  python tools/devloop_cli.py browser --level full

## HTML Reports (optimization_engine/reporting/)
- Interactive Plotly-based reports
- Convergence plot, Pareto front, parallel coordinates
- Parameter importance analysis
- Self-contained HTML (offline-capable)
- Tailwind CSS styling

## Playwright E2E Tests
- Home page tests
- Test results in test-results/

## LAC Knowledge Base Updates
- Session insights (failures, workarounds, patterns)
- Optimization memory for arm support study

.devloop/browser_test_results.json

@@ -0,0 +1,33 @@
+{
+  "timestamp": "2026-01-22T18:13:30.884945",
+  "scenarios": [
+    {
+      "scenario_id": "browser_home_stats",
+      "scenario_name": "Home page shows statistics",
+      "passed": true,
+      "duration_ms": 1413.166,
+      "error": null,
+      "details": {
+        "navigated_to": "http://localhost:3003/",
+        "found_selector": "text=Total Trials"
+      }
+    },
+    {
+      "scenario_id": "browser_expand_folder",
+      "scenario_name": "Topic folder expands on click",
+      "passed": true,
+      "duration_ms": 2785.3219999999997,
+      "error": null,
+      "details": {
+        "navigated_to": "http://localhost:3003/",
+        "found_selector": "span:has-text('completed'), span:has-text('running'), span:has-text('paused')",
+        "clicked": "button:has-text('trials')"
+      }
+    }
+  ],
+  "summary": {
+    "passed": 2,
+    "failed": 0,
+    "total": 2
+  }
+}