feat(api, web): implement short install link functionality for agents

- Added new API endpoints for creating, retrieving, and revoking install links for agents.
- Enhanced the agent installation process with short links accessible via `/agent-install/:id` and `/:slug`.
- Updated the README and documentation to reflect the new installation method and usage instructions.
- Refactored relevant components in the web application to support the new install link feature.
- Improved error handling and validation for install link operations.

Co-authored-by: Cursor <[email protected]>

README.md

@@ -22,7 +22,15 @@ pnpm --filter @evofw/api dev   # :8080
 pnpm --filter @evofw/web dev   # :5177
 ```
 
-Linux agent:
+Linux agent (short link из UI `/agents` → Добавить агента):
+
+```bash
+curl -fsSL http://localhost:8080/agent-install/<id> | bash
+# или:
+curl -fsSL http://localhost:8080/<slug> | bash
+```
+
+Legacy one-liner:
 
 ```bash
 curl -fsSL http://localhost:8080/v1/agent/install.sh | \