Add link understanding tool support (#1637)

* Add

* Fix

---------

Co-authored-by: Richard <dasilva333@DESKTOP-74E3GJO.localdomain>

src/config/types.tools.ts

@@ -102,6 +102,30 @@ export type MediaUnderstandingConfig = {
   models?: MediaUnderstandingModelConfig[];
 };
 
+export type LinkModelConfig = {
+  /** Use a CLI command for link processing. */
+  type?: "cli";
+  /** CLI binary (required when type=cli). */
+  command: string;
+  /** CLI args (template-enabled). */
+  args?: string[];
+  /** Optional timeout override (seconds) for this model entry. */
+  timeoutSeconds?: number;
+};
+
+export type LinkToolsConfig = {
+  /** Enable link understanding when models are configured. */
+  enabled?: boolean;
+  /** Optional scope gating for understanding. */
+  scope?: MediaUnderstandingScopeConfig;
+  /** Max number of links to process per message. */
+  maxLinks?: number;
+  /** Default timeout (seconds). */
+  timeoutSeconds?: number;
+  /** Ordered model list (fallbacks in order). */
+  models?: LinkModelConfig[];
+};
+
 export type MediaToolsConfig = {
   /** Shared model list applied across image/audio/video. */
   models?: MediaUnderstandingModelConfig[];
@@ -347,6 +371,7 @@ export type ToolsConfig = {
     };
   };
   media?: MediaToolsConfig;
+  links?: LinkToolsConfig;
   /** Message tool configuration. */
   message?: {
     /**