feat: add opencode to CI matrix and Helm chart

- Add opencode variant to build.yml (build-image, merge-manifests, promote-stable)
- Add opencode to docker-smoke-test.yml
- Add commented-out opencode preset example in Helm values.yaml

Author: pahud

.github/workflows/build.yml

@@ -70,6 +70,7 @@ jobs:
           - { suffix: "-claude", dockerfile: "Dockerfile.claude", artifact: "claude" }
           - { suffix: "-gemini", dockerfile: "Dockerfile.gemini", artifact: "gemini" }
           - { suffix: "-copilot", dockerfile: "Dockerfile.copilot", artifact: "copilot" }
+          - { suffix: "-opencode", dockerfile: "Dockerfile.opencode", artifact: "opencode" }
         platform:
           - { os: linux/amd64, runner: ubuntu-latest }
           - { os: linux/arm64, runner: ubuntu-24.04-arm }
@@ -131,6 +132,7 @@ jobs:
           - { suffix: "-claude", artifact: "claude" }
           - { suffix: "-gemini", artifact: "gemini" }
           - { suffix: "-copilot", artifact: "copilot" }
+          - { suffix: "-opencode", artifact: "opencode" }
     runs-on: ubuntu-latest
     permissions:
       contents: read
@@ -179,6 +181,7 @@ jobs:
           - { suffix: "-claude" }
           - { suffix: "-gemini" }
           - { suffix: "-copilot" }
+          - { suffix: "-opencode" }
     runs-on: ubuntu-latest
     permissions:
       contents: read

.github/workflows/docker-smoke-test.yml

@@ -18,6 +18,7 @@ jobs:
           - { dockerfile: Dockerfile.codex, suffix: "-codex", agent: "codex-acp", agent_args: "" }
           - { dockerfile: Dockerfile.gemini, suffix: "-gemini", agent: "gemini", agent_args: "--acp" }
           - { dockerfile: Dockerfile.copilot, suffix: "-copilot", agent: "copilot", agent_args: "--acp" }
+          - { dockerfile: Dockerfile.opencode, suffix: "-opencode", agent: "opencode", agent_args: "acp" }
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6

charts/openab/values.yaml

@@ -53,6 +53,33 @@ agents:
     #   tolerations: []
     #   affinity: {}
     #   image: "ghcr.io/openabdev/openab-claude:latest"
+    # opencode:
+    #   command: opencode
+    #   args:
+    #     - acp
+    #   discord:
+    #     botToken: ""
+    #     allowedChannels:
+    #       - "YOUR_CHANNEL_ID"
+    #     allowedUsers: []
+    #     allowBotMessages: "off"
+    #     trustedBotIds: []
+    #   workingDir: /home/node
+    #   env: {}
+    #   envFrom: []
+    #   pool:
+    #     maxSessions: 10
+    #     sessionTtlHours: 24
+    #   reactions:
+    #     enabled: true
+    #     removeAfterReply: false
+    #   persistence:
+    #     enabled: true
+    #     storageClass: ""
+    #     size: 1Gi
+    #   agentsMd: ""
+    #   resources: {}
+    #   image: "ghcr.io/openabdev/openab-opencode:latest"
     image: ""
     command: kiro-cli
     args: