fix: remove Caddy from testnet compose (nginx handles proxy)

Dev VM uses nginx as reverse proxy, Caddy was conflicting on port 80/443.
Remove Caddy service and related volumes from testnet compose file.
Also remove Caddyfile from deploy workflow source files.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: JOY

.github/workflows/deploy-config.yml

@@ -99,7 +99,6 @@ jobs:
           key: ${{ secrets.SSH_PRIVATE_KEY }}
           source: >-
             docker-compose/docker-compose-testnet.yml,
-            docker-compose/Caddyfile-testnet,
             docker-compose/envs/common-frontend-testnet.env,
             docker-compose/envs/common-smart-contract-verifier.env,
             docker-compose/envs/common-visualizer.env
@@ -118,7 +117,6 @@ jobs:
             SRC=/tmp/doscan-deploy
 
             cp $SRC/docker-compose-testnet.yml $DEPLOY_PATH/docker-compose.yml
-            cp $SRC/Caddyfile-testnet $DEPLOY_PATH/Caddyfile-testnet
             cp $SRC/envs/common-frontend-testnet.env $DEPLOY_PATH/envs/common-frontend-testnet.env
             cp $SRC/envs/common-smart-contract-verifier.env $DEPLOY_PATH/envs/common-smart-contract-verifier.env
             cp $SRC/envs/common-visualizer.env $DEPLOY_PATH/envs/common-visualizer.env

docker-compose/docker-compose-testnet.yml

@@ -241,29 +241,9 @@ services:
     ports:
       - "127.0.0.1:8052:8050"
 
-  # ==========================================================================
-  # Caddy - Reverse Proxy with Auto SSL
-  # ==========================================================================
-  caddy:
-    depends_on:
-      - backend
-      - frontend
-    image: caddy:latest
-    container_name: caddy
-    restart: always
-    extra_hosts:
-      - 'host.docker.internal:host-gateway'
-    volumes:
-      - ./Caddyfile-testnet:/etc/caddy/Caddyfile
-      - caddy_data:/data
-      - caddy_config:/config
-    ports:
-      - "80:80"
-      - "443:443"
+  # Note: Caddy removed - dev VM uses nginx as reverse proxy
 
 volumes:
   postgres_data:
   redis_data:
   avago_data:
-  caddy_data:
-  caddy_config: