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/test_results.json

@@ -0,0 +1,64 @@
+{
+  "timestamp": "2026-01-22T21:10:54.742272",
+  "scenarios": [
+    {
+      "scenario_id": "test_study_dir",
+      "scenario_name": "Study directory exists: stage_3_arm",
+      "passed": true,
+      "duration_ms": 0.0,
+      "error": null,
+      "details": {
+        "path": "C:\\Users\\antoi\\Atomizer\\studies\\Stage3\\stage_3_arm",
+        "exists": true
+      }
+    },
+    {
+      "scenario_id": "test_spec",
+      "scenario_name": "AtomizerSpec is valid JSON",
+      "passed": true,
+      "duration_ms": 1.045,
+      "error": null,
+      "details": {
+        "valid_json": true
+      }
+    },
+    {
+      "scenario_id": "test_readme",
+      "scenario_name": "README exists",
+      "passed": true,
+      "duration_ms": 0.0,
+      "error": null,
+      "details": {
+        "path": "C:\\Users\\antoi\\Atomizer\\studies\\Stage3\\stage_3_arm\\README.md",
+        "exists": true
+      }
+    },
+    {
+      "scenario_id": "test_run_script",
+      "scenario_name": "run_optimization.py exists",
+      "passed": true,
+      "duration_ms": 0.0,
+      "error": null,
+      "details": {
+        "path": "C:\\Users\\antoi\\Atomizer\\studies\\Stage3\\stage_3_arm\\run_optimization.py",
+        "exists": true
+      }
+    },
+    {
+      "scenario_id": "test_model_dir",
+      "scenario_name": "Model directory exists",
+      "passed": true,
+      "duration_ms": 0.0,
+      "error": null,
+      "details": {
+        "path": "C:\\Users\\antoi\\Atomizer\\studies\\Stage3\\stage_3_arm\\1_setup\\model",
+        "exists": true
+      }
+    }
+  ],
+  "summary": {
+    "passed": 5,
+    "failed": 0,
+    "total": 5
+  }
+}