refactor: Phase 2a — consolidate dashboard routes (27→22 files)

Merge related route files to reduce sprawl:
- voice.py ← voice_enhanced.py (enhanced pipeline merged in)
- swarm.py ← swarm_internal.py + swarm_ws.py (internal API + WebSocket)
- self_coding.py ← self_modify.py (self-modify endpoints merged in)
- Delete mobile_test.py route + template (test-only page, not for prod)
- Delete test_xss_prevention.py (tested the deleted mobile_test page)

Update app.py to use consolidated imports.
Update test_voice_enhanced.py patch paths.
Remove mobile_test.py from coverage omit (file deleted).

27 route files → 22. Tests: 1502 passed (1 removed with deleted page).

https://claude.ai/code/session_019oMFNvD8uSGSSmBMGkBfQN

pyproject.toml

@@ -130,7 +130,6 @@ markers = [
 source = ["src"]
 omit = [
     "*/tests/*",
-    "src/dashboard/routes/mobile_test.py",
 ]
 
 [tool.coverage.report]