feat(tools): add Firecrawl cloud browser provider (#5628)

* feat(tools): add Firecrawl cloud browser provider

Adds Firecrawl (https://firecrawl.dev) as a cloud browser provider
alongside Browserbase and Browser Use. All browser tools route through
Firecrawl's cloud browser via CDP when selected.

- tools/browser_providers/firecrawl.py — FirecrawlProvider
- tools/browser_tool.py — register in _PROVIDER_REGISTRY
- hermes_cli/tools_config.py — add to onboarding provider picker
- hermes_cli/setup.py — add to setup summary
- hermes_cli/config.py — add FIRECRAWL_BROWSER_TTL config
- website/docs/ — browser docs and env var reference

Based on #4490 by @developersdigest.

Co-Authored-By: Developers Digest <124798203+developersdigest@users.noreply.github.com>

* refactor: simplify FirecrawlProvider.emergency_cleanup

Use self._headers() and self._api_url() instead of duplicating
env-var reads and header construction.

* fix: recognize Firecrawl in subscription browser detection

_resolve_browser_feature_state() now handles "firecrawl" as a direct
browser provider (same pattern as "browser-use"), so hermes setup
summary correctly shows "Browser Automation (Firecrawl)" instead of
misreporting as "Local browser".

Also fixes test_config_version_unchanged assertion (11 → 12).

---------

Co-authored-by: Developers Digest <124798203+developersdigest@users.noreply.github.com>

hermes_cli/setup.py

@@ -657,7 +657,7 @@ def _print_setup_summary(config: dict, hermes_home):
     else:
         tool_status.append(("Web Search & Extract", False, "EXA_API_KEY, PARALLEL_API_KEY, FIRECRAWL_API_KEY/FIRECRAWL_API_URL, or TAVILY_API_KEY"))
 
-    # Browser tools (local Chromium, Camofox, Browserbase, or Browser Use)
+    # Browser tools (local Chromium, Camofox, Browserbase, Browser Use, or Firecrawl)
     browser_provider = subscription_features.browser.current_provider
     if subscription_features.browser.managed_by_nous:
         tool_status.append(("Browser Automation (Nous Browserbase)", True, None))