Default new OpenCode agents to Paperclip Runner (#17120)

Default new OpenCode agents to Paperclip Runner on qualified macOS and Linux x64 targets. Preserve saved runner choices, explicit Legacy selection, and unsupported-target fallback. Pi remains a separate change.

Verified the complete browser path with a real OpenRouter connection: create the new agent, assign a task, observe its response and Done status, and reload to confirm persistence. CI passes and Greptile is 5/5 with no unresolved findings.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

server/src/services/native-runtime/runtime-mode.test.ts

@@ -90,11 +90,17 @@ describe("resolveNativeRuntimeMode", () => {
     })).toMatchObject({ kind: "native", profile: { backend: "grok_bot_mcp" } });
   });
 
-  it("still rejects experimental providers while the rollout flag is disabled", () => {
+  it("admits OpenCode without the experimental flag", () => {
+    expect(resolveNativeRuntimeMode({ ...eligible, enabled: false,
+      adapterConfig: { provider: "opencode", model: "openrouter/anthropic/claude-sonnet-4.6" },
+    })).toMatchObject({ kind: "native", profile: { backend: "opencode_server" } });
+  });
+
+  it("still rejects Pi while the rollout flag is disabled", () => {
     expect(() => resolveNativeRuntimeMode({
       ...eligible,
       enabled: false,
-      adapterConfig: { provider: "opencode", model: "openrouter/deepseek/deepseek-v4-flash-0731" },
+      adapterConfig: { provider: "acpx", acpxAgent: "pi", model: "openrouter/deepseek/deepseek-v4-flash-0731" },
     })).toThrow(expect.objectContaining({
       code: "paperclip_runner_rollout_disabled",
     }));
@@ -244,7 +250,7 @@ describe("resolveNativeRuntimeMode", () => {
 
   it("keeps a persisted experimental run native while the flag rejects a fresh start", () => {
     const disabled = { ...eligible, enabled: false,
-      adapterConfig: { provider: "opencode", model: "openrouter/deepseek/deepseek-v4-flash-0731" },
+      adapterConfig: { provider: "acpx", acpxAgent: "pi", model: "openrouter/deepseek/deepseek-v4-flash-0731" },
     };
     expect(resolveHeartbeatNativeRuntimeMode({
       ...disabled,
@@ -252,7 +258,7 @@ describe("resolveNativeRuntimeMode", () => {
         runtimeMode: "native",
         runtimeModeReason: "eligible_opt_in",
         runtimeModeResolvedAt: new Date(),
-        driverKind: "opencode_server",
+        driverKind: "acpx_runtime",
       },
     })).toEqual(expect.objectContaining({
       kind: "native",
@@ -516,7 +522,7 @@ describe("resolveHeartbeatRuntimeMode compatibility", () => {
       ...compatibilityInput,
       enabled: false,
       adapterType: "paperclip_runner",
-      adapterConfig: { provider: "opencode", model: "opencode/gpt-5" },
+      adapterConfig: { provider: "acpx", acpxAgent: "pi", model: "openrouter/anthropic/claude-sonnet-4.6" },
     })).toThrow(NativeRunnerSelectionError);
   });
   it("admits native Claude without enabling other ACPX providers", () => {

server/src/services/native-runtime/runtime-mode.ts

@@ -138,7 +138,7 @@ export function resolveNativeRuntimeMode(input: {
     if (input.dotEnabled !== true) throw ineligible("paperclip_runner_dot_disabled", "Enable OpenAI Dot and Assistant connections (MCP) in experimental settings before assigning new work.");
   } else if (runnerProfile.provider === "grok_bot" && (input.grokEnabled !== true || !input.enabled)) {
     throw ineligible("paperclip_runner_grok_disabled", "Enable Grok Bot, Paperclip Runner, and Assistant connections (MCP) before assigning new work.");
-  } else if (runnerProfile.provider !== "codex"
+  } else if (runnerProfile.provider !== "codex" && runnerProfile.provider !== "opencode"
     && !(runnerProfile.provider === "acpx"
       && (runnerProfile.acpxAgent === "claude" || runnerProfile.acpxAgent === "copilot"))
     && !input.enabled) {