fix: update setup/config UI for local browser mode

- tools_config.py: Add 'Local Browser' as first provider option
  (no API keys needed, same npm install for agent-browser)
- setup.py: Show 'Browser Automation (local)' when agent-browser
  CLI is found but no Browserbase key is set
- config.py: Mark BROWSERBASE_* descriptions as optional
- status.py: Note that local browser works without Browserbase

hermes_cli/config.py

@@ -273,7 +273,7 @@ OPTIONAL_ENV_VARS = {
         "advanced": True,
     },
     "BROWSERBASE_API_KEY": {
-        "description": "Browserbase API key for browser automation",
+        "description": "Browserbase API key for cloud browser (optional — local browser works without this)",
         "prompt": "Browserbase API key",
         "url": "https://browserbase.com/",
         "tools": ["browser_navigate", "browser_click"],
@@ -281,7 +281,7 @@ OPTIONAL_ENV_VARS = {
         "category": "tool",
     },
     "BROWSERBASE_PROJECT_ID": {
-        "description": "Browserbase project ID",
+        "description": "Browserbase project ID (optional — only needed for cloud browser)",
         "prompt": "Browserbase project ID",
         "url": "https://browserbase.com/",
         "tools": ["browser_navigate", "browser_click"],