fix opencode and gitea integration

.opencode-sandbox/docker-compose.yml

@@ -9,12 +9,11 @@ services:
       - NET_ADMIN   # required for iptables in entrypoint
       - NET_RAW
     volumes:
-      # Your monorepo — opencode's working directory
+      # Your monorepo
       - /home/ga/workspace:/workspace
-      # SSH key for Gitea auth
-      - ~/.ssh/id_ed25519:/root/.ssh/id_ed25519
-      - ~/.ssh/known_hosts:/root/.ssh/known_hosts:ro
-      # Persist opencode auth so you don't re-login every time
+      # Mount entire SSH directory from host
+      - /home/ga/.ssh:/root/.ssh
+      # Persist opencode auth
       - opencode-auth:/root/.local/share/opencode
     environment:
       - OPENCODE_API_KEY=${OPENCODE_API_KEY}