chore: rename to agent-call and finalize mock-first delivery plan

deploy/aliyun.example.json

@@ -1,7 +1,7 @@
 {
   "region": "cn-beijing",
   "public_ip": "123.56.71.98",
-  "project_tag": "ai-call",
+  "project_tag": "agent-call",
   "profile": null,
   "adopt_instance_id": null,
   "image_id": "",

deploy/render_asterisk.py

@@ -98,7 +98,7 @@ def render(cfg, env):
         raise ValueError(
             "primary and backup targets must be distinct; shared failure domains still require validation"
         )
-    transport = f"[global]\ntype=global\nuser_agent=ai-call\n\n[transport-udp]\ntype=transport\nprotocol=udp\nbind=0.0.0.0:5060\nlocal_net={network}\nexternal_signaling_address={PUBLIC_IP}\nexternal_media_address={PUBLIC_IP}\n\n"
+    transport = f"[global]\ntype=global\nuser_agent=agent-call\n\n[transport-udp]\ntype=transport\nprotocol=udp\nbind=0.0.0.0:5060\nlocal_net={network}\nexternal_signaling_address={PUBLIC_IP}\nexternal_media_address={PUBLIC_IP}\n\n"
     return {
         "http.conf": f"[general]\nenabled=yes\nbindaddr={bind}\nbindport=8088\n",
         "ari.conf": f"[general]\nenabled=yes\npretty=no\n\n[outbound]\ntype=user\nread_only=no\npassword={password}\n",