fix: resolve agent card URL for A2A client initialization

ClientFactory.createFromUrl expects the full agent card URL
(/.well-known/agent-card.json), not just the base server URL.
Also adds CHAT_BRIDGE_A2A_URL to k8s deployment and test script.

packages/a2a-server/k8s/deployment.yaml

@@ -34,6 +34,8 @@ spec:
                   key: api-key
             - name: GEMINI_YOLO_MODE
               value: "true"
+            - name: CHAT_BRIDGE_A2A_URL
+              value: "http://localhost:8080"
             - name: NODE_ENV
               value: "production"
           resources:

packages/a2a-server/src/chat-bridge/a2a-bridge-client.ts

@@ -87,9 +87,10 @@ export function extractAllParts(result: A2AResponse): Part[] {
 export function extractTextFromParts(parts: Part[]): string {
   return parts
     .filter((p) => p.kind === 'text')
-    .map((p) => 
-      // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
-       (p as unknown as { text: string }).text
+    .map(
+      (p) =>
+        // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
+        (p as unknown as { text: string }).text,
     )
     .filter(Boolean)
     .join('\n');
@@ -151,7 +152,10 @@ export class A2ABridgeClient {
     );
 
     const factory = new ClientFactory(options);
-    this.client = await factory.createFromUrl(this.agentUrl, '');
+    // createFromUrl expects the agent card URL, not just the base URL
+    const agentCardUrl =
+      this.agentUrl.replace(/\/$/, '') + '/.well-known/agent-card.json';
+    this.client = await factory.createFromUrl(agentCardUrl, '');
 
     const card = await this.client.getAgentCard();
     logger.info(

packages/a2a-server/test-chat-bridge.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+# Test script for the Google Chat bridge webhook endpoint.
+# Simulates Google Chat events to verify the bridge works.
+#
+# Usage: ./test-chat-bridge.sh [PORT]
+# Default port: 9090 (for kubectl port-forward)
+
+PORT=${1:-9090}
+BASE_URL="http://localhost:${PORT}"
+
+echo "Testing chat bridge at ${BASE_URL}..."
+
+# 1. Test health endpoint
+echo -e "\n--- Health Check ---"
+curl -s "${BASE_URL}/chat/health" | jq .
+
+# 2. Test ADDED_TO_SPACE event
+echo -e "\n--- ADDED_TO_SPACE ---"
+curl -s -X POST "${BASE_URL}/chat/webhook" \
+  -H "Content-Type: application/json" \
+  -d '{
+    "type": "ADDED_TO_SPACE",
+    "eventTime": "2026-01-01T00:00:00Z",
+    "space": { "name": "spaces/test123", "type": "DM" },
+    "user": { "name": "users/123", "displayName": "Test User" }
+  }' | jq .
+
+# 3. Test MESSAGE event
+echo -e "\n--- MESSAGE (Hello) ---"
+curl -s -X POST "${BASE_URL}/chat/webhook" \
+  -H "Content-Type: application/json" \
+  -d '{
+    "type": "MESSAGE",
+    "eventTime": "2026-01-01T00:01:00Z",
+    "message": {
+      "name": "spaces/test123/messages/msg1",
+      "sender": { "name": "users/123", "displayName": "Test User" },
+      "createTime": "2026-01-01T00:01:00Z",
+      "text": "Hello, write me a python hello world",
+      "argumentText": "Hello, write me a python hello world",
+      "thread": { "name": "spaces/test123/threads/thread1" },
+      "space": { "name": "spaces/test123", "type": "DM" }
+    },
+    "space": { "name": "spaces/test123", "type": "DM" },
+    "user": { "name": "users/123", "displayName": "Test User" }
+  }' | jq .
+
+echo -e "\nDone."