test(cli): add program context unit coverage

src/cli/program/program-context.test.ts

@@ -0,0 +1,38 @@
+import { Command } from "commander";
+import { describe, expect, it } from "vitest";
+import type { ProgramContext } from "./context.js";
+import { getProgramContext, setProgramContext } from "./program-context.js";
+
+function makeCtx(version: string): ProgramContext {
+  return {
+    programVersion: version,
+    channelOptions: ["telegram"],
+    messageChannelOptions: "telegram",
+    agentChannelOptions: "last|telegram",
+  };
+}
+
+describe("program context storage", () => {
+  it("stores and retrieves context on a command instance", () => {
+    const program = new Command();
+    const ctx = makeCtx("1.2.3");
+    setProgramContext(program, ctx);
+    expect(getProgramContext(program)).toBe(ctx);
+  });
+
+  it("returns undefined when no context was set", () => {
+    expect(getProgramContext(new Command())).toBeUndefined();
+  });
+
+  it("does not leak context between command instances", () => {
+    const programA = new Command();
+    const programB = new Command();
+    const ctxA = makeCtx("a");
+    const ctxB = makeCtx("b");
+    setProgramContext(programA, ctxA);
+    setProgramContext(programB, ctxB);
+
+    expect(getProgramContext(programA)).toBe(ctxA);
+    expect(getProgramContext(programB)).toBe(ctxB);
+  });
+});