fix: rename OMX_OPENCLAW env vars to OMO_OPENCLAW

Renames all environment variable gates from the old oh-my-codex (OMX) prefix
to the correct oh-my-openagent (OMO) prefix:

- OMX_OPENCLAW -> OMO_OPENCLAW
- OMX_OPENCLAW_COMMAND -> OMO_OPENCLAW_COMMAND
- OMX_OPENCLAW_DEBUG -> OMO_OPENCLAW_DEBUG
- OMX_OPENCLAW_COMMAND_TIMEOUT_MS -> OMO_OPENCLAW_COMMAND_TIMEOUT_MS

Adds TDD tests verifying:
- OMO_OPENCLAW=1 is required for activation
- Old OMX_OPENCLAW env var is not accepted

src/openclaw/__tests__/client.test.ts

@@ -1,5 +1,5 @@
-import { describe, it, expect } from "bun:test";
-import { resolveGateway } from "../client";
+import { describe, it, expect, beforeEach, afterEach } from "bun:test";
+import { resolveGateway, wakeOpenClaw } from "../client";
 import { type OpenClawConfig } from "../types";
 
 describe("OpenClaw Client", () => {
@@ -38,4 +38,61 @@ describe("OpenClaw Client", () => {
       expect(result).toBeNull();
     });
   });
+
+  describe("wakeOpenClaw env gate", () => {
+    let oldEnv: string | undefined;
+
+    beforeEach(() => {
+      oldEnv = process.env.OMO_OPENCLAW;
+    });
+
+    afterEach(() => {
+      if (oldEnv === undefined) {
+        delete process.env.OMO_OPENCLAW;
+      } else {
+        process.env.OMO_OPENCLAW = oldEnv;
+      }
+    });
+
+    it("returns null when OMO_OPENCLAW is not set", async () => {
+      delete process.env.OMO_OPENCLAW;
+      const config: OpenClawConfig = {
+        enabled: true,
+        gateways: { gw: { type: "command", command: "echo test" } },
+        hooks: {
+          "session-start": { gateway: "gw", instruction: "hi", enabled: true },
+        },
+      };
+      const result = await wakeOpenClaw("session-start", { projectPath: "/tmp" }, config);
+      expect(result).toBeNull();
+    });
+
+    it("returns null when OMO_OPENCLAW is not '1'", async () => {
+      process.env.OMO_OPENCLAW = "0";
+      const config: OpenClawConfig = {
+        enabled: true,
+        gateways: { gw: { type: "command", command: "echo test" } },
+        hooks: {
+          "session-start": { gateway: "gw", instruction: "hi", enabled: true },
+        },
+      };
+      const result = await wakeOpenClaw("session-start", { projectPath: "/tmp" }, config);
+      expect(result).toBeNull();
+    });
+
+    it("does not use OMX_OPENCLAW (old env var)", async () => {
+      delete process.env.OMO_OPENCLAW;
+      process.env.OMX_OPENCLAW = "1";
+      const config: OpenClawConfig = {
+        enabled: true,
+        gateways: { gw: { type: "command", command: "echo test" } },
+        hooks: {
+          "session-start": { gateway: "gw", instruction: "hi", enabled: true },
+        },
+      };
+      const result = await wakeOpenClaw("session-start", { projectPath: "/tmp" }, config);
+      expect(result).toBeNull();
+      delete process.env.OMX_OPENCLAW;
+    });
+  });
 });

src/openclaw/__tests__/dispatcher.test.ts

@@ -63,8 +63,8 @@ describe("OpenClaw Dispatcher", () => {
 
   describe("wakeCommandGateway", () => {
     it("rejects if disabled via env", async () => {
-      const oldEnv = process.env.OMX_OPENCLAW_COMMAND;
-      process.env.OMX_OPENCLAW_COMMAND = "0";
+      const oldEnv = process.env.OMO_OPENCLAW_COMMAND;
+      process.env.OMO_OPENCLAW_COMMAND = "0";
       const config: OpenClawCommandGatewayConfig = {
         type: "command",
         command: "echo hi",
@@ -72,7 +72,7 @@ describe("OpenClaw Dispatcher", () => {
       const result = await wakeCommandGateway("test", config, {});
       expect(result.success).toBe(false);
       expect(result.error).toContain("disabled");
-      process.env.OMX_OPENCLAW_COMMAND = oldEnv;
+      process.env.OMO_OPENCLAW_COMMAND = oldEnv;
     });
   });
 });