feat(browser): add Camofox local anti-detection browser backend (#4008)

Camofox-browser is a self-hosted Node.js server wrapping Camoufox
(Firefox fork with C++ fingerprint spoofing). When CAMOFOX_URL is set,
all 11 browser tools route through the Camofox REST API instead of
the agent-browser CLI.

Maps 1:1 to the existing browser tool interface:
- Navigate, snapshot, click, type, scroll, back, press, close
- Get images, vision (screenshot + LLM analysis)
- Console (returns empty with note — camofox limitation)

Setup: npm start in camofox-browser dir, or docker run -p 9377:9377
Then: CAMOFOX_URL=http://localhost:9377 in ~/.hermes/.env

Advantages over Browserbase (cloud):
- Free (no per-session API costs)
- Local (zero network latency for browser ops)
- Anti-detection at C++ level (bypasses Cloudflare/Google bot detection)
- Works offline, Docker-ready

Files:
- tools/browser_camofox.py: Full REST backend (~400 lines)
- tools/browser_tool.py: Routing at each tool function
- hermes_cli/config.py: CAMOFOX_URL env var entry
- tests/tools/test_browser_camofox.py: 20 tests

hermes_cli/setup.py

@@ -601,13 +601,15 @@ def _print_setup_summary(config: dict, hermes_home):
             Path(__file__).parent.parent / "node_modules" / ".bin" / "agent-browser"
         ).exists()
     )
-    if get_env_value("BROWSERBASE_API_KEY"):
+    if get_env_value("CAMOFOX_URL"):
+        tool_status.append(("Browser Automation (Camofox)", True, None))
+    elif get_env_value("BROWSERBASE_API_KEY"):
         tool_status.append(("Browser Automation (Browserbase)", True, None))
     elif _ab_found:
         tool_status.append(("Browser Automation (local)", True, None))
     else:
         tool_status.append(
-            ("Browser Automation", False, "npm install -g agent-browser")
+            ("Browser Automation", False, "npm install -g agent-browser or set CAMOFOX_URL")
         )
 
     # FAL (image generation)