feat: add cookie support to kijiji scraper

Add optional cookie parameter to bypass bot detection (403 errors).
Cookies can be provided via parameter, KIJIJI_COOKIE env var, or
cookies/kijiji.json file. Supports both JSON array and string formats.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/mcp-server/src/protocol/handler.ts

@@ -115,6 +115,7 @@ export async function handleMcpRequest(req: Request): Promise<Response> {
             params.append("priceMin", args.priceMin.toString());
           if (args.priceMax)
             params.append("priceMax", args.priceMax.toString());
+          if (args.cookies) params.append("cookies", args.cookies);
 
           console.log(
             `[MCP] Calling Kijiji API: ${API_BASE_URL}/kijiji?${params.toString()}`,

packages/mcp-server/src/protocol/tools.ts

@@ -52,6 +52,11 @@ export const tools = [
           type: "number",
           description: "Maximum price in cents",
         },
+        cookies: {
+          type: "string",
+          description:
+            "Optional: Kijiji session cookies to bypass bot detection (JSON array or 'name1=value1; name2=value2')",
+        },
       },
       required: ["query"],
     },