feat(tools): add support for self-hosted firecrawl

Adds optional FIRECRAWL_API_URL environment variable to support
self-hosted Firecrawl deployments alongside the cloud service.

- Add FIRECRAWL_API_URL to optional env vars in hermes_cli/config.py
- Update _get_firecrawl_client() in tools/web_tools.py to accept custom API URL
- Add tests for client initialization with/without URL
- Document new env var in installation and config guides

website/docs/getting-started/installation.md

@@ -164,6 +164,7 @@ OPENROUTER_API_KEY=sk-or-v1-your-key-here
 
 # Optional — enable additional tools:
 FIRECRAWL_API_KEY=fc-your-key          # Web search & scraping
+FIRECRAWL_API_URL=http://localhost:3002  # Self-hosted Firecrawl (optional)
 FAL_KEY=your-fal-key                   # Image generation (FLUX)
 ```
 

website/docs/reference/environment-variables.md

@@ -35,6 +35,7 @@ All variables go in `~/.hermes/.env`. You can also set them with `hermes config
 | Variable | Description |
 |----------|-------------|
 | `FIRECRAWL_API_KEY` | Web scraping ([firecrawl.dev](https://firecrawl.dev/)) |
+| `FIRECRAWL_API_URL` | Custom Firecrawl API endpoint for self-hosted instances (optional) |
 | `BROWSERBASE_API_KEY` | Browser automation ([browserbase.com](https://browserbase.com/)) |
 | `BROWSERBASE_PROJECT_ID` | Browserbase project ID |
 | `BROWSER_INACTIVITY_TIMEOUT` | Browser session inactivity timeout in seconds |

website/docs/user-guide/configuration.md

@@ -79,6 +79,7 @@ Even when using Nous Portal, Codex, or a custom endpoint, some tools (vision, we
 | Feature | Provider | Env Variable |
 |---------|----------|--------------|
 | Web scraping | [Firecrawl](https://firecrawl.dev/) | `FIRECRAWL_API_KEY` |
+| Web scraping (self-hosted) | Firecrawl | `FIRECRAWL_API_URL` |
 | Browser automation | [Browserbase](https://browserbase.com/) | `BROWSERBASE_API_KEY`, `BROWSERBASE_PROJECT_ID` |
 | Image generation | [FAL](https://fal.ai/) | `FAL_KEY` |
 | Premium TTS voices | [ElevenLabs](https://elevenlabs.io/) | `ELEVENLABS_API_KEY` |