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/tools_config.py

@@ -273,6 +273,16 @@ TOOL_CATEGORIES = {
                 "browser_provider": "browser-use",
                 "post_setup": "browserbase",
             },
+            {
+                "name": "Camofox",
+                "tag": "Local anti-detection browser (Firefox/Camoufox)",
+                "env_vars": [
+                    {"key": "CAMOFOX_URL", "prompt": "Camofox server URL", "default": "http://localhost:9377",
+                     "url": "https://github.com/jo-inc/camofox-browser"},
+                ],
+                "browser_provider": "camofox",
+                "post_setup": "camofox",
+            },
         ],
     },
     "homeassistant": {
@@ -337,6 +347,28 @@ def _run_post_setup(post_setup_key: str):
         elif not node_modules.exists():
             _print_warning("    Node.js not found - browser tools require: npm install (in hermes-agent directory)")
 
+    elif post_setup_key == "camofox":
+        camofox_dir = PROJECT_ROOT / "node_modules" / "@askjo" / "camoufox-browser"
+        if not camofox_dir.exists() and shutil.which("npm"):
+            _print_info("    Installing Camofox browser server...")
+            import subprocess
+            result = subprocess.run(
+                ["npm", "install", "--silent"],
+                capture_output=True, text=True, cwd=str(PROJECT_ROOT)
+            )
+            if result.returncode == 0:
+                _print_success("    Camofox installed")
+            else:
+                _print_warning("    npm install failed - run manually: npm install")
+        if camofox_dir.exists():
+            _print_info("    Start the Camofox server:")
+            _print_info("      npx @askjo/camoufox-browser")
+            _print_info("    First run downloads the Camoufox engine (~300MB)")
+            _print_info("    Or use Docker: docker run -p 9377:9377 jo-inc/camofox-browser")
+        elif not shutil.which("npm"):
+            _print_warning("    Node.js not found. Install Camofox via Docker:")
+            _print_info("      docker run -p 9377:9377 jo-inc/camofox-browser")
+
     elif post_setup_key == "rl_training":
         try:
             __import__("tinker_atropos")