Initial commit: pygenium as git submodule

tests/extensibility.test.ts

@@ -0,0 +1,38 @@
+/**
+ * extensibility.test.ts — the registry extensibility claim (task 14).
+ *
+ * Proves a NEW check added as a file in `src/checks/` plus one `registerCheck()`
+ * entry yields a working `/pygienium-<name>` command with ZERO `index.ts`
+ * command-wiring changes. The witness is `src/checks/noop.ts`: importing it
+ * self-registers the `noop` check, after which the generic command-binding path
+ * (`registerPygieniumCommands`, the exact function `index.ts` calls) exposes
+ * `/pygienium-noop` and `/pygienium-help` lists it.
+ */
+import { describe, expect, it } from "bun:test";
+import "../src/checks/noop.js";
+import { getCheck, getAllChecks } from "../src/checks/registry.js";
+import { registerPygieniumCommands } from "../src/commands.js";
+import { buildPygieniumHelpLines } from "../src/help.js";
+
+describe("registry extensibility (task 14)", () => {
+	it("the noop check file self-registers (no index.ts edits)", () => {
+		// Importing checks/noop.ts ran its top-level registerCheck(noopCheck).
+		expect(getCheck("noop")).toBeDefined();
+		expect(getAllChecks().some((c) => c.name === "noop")).toBe(true);
+	});
+
+	it("registerPygieniumCommands exposes /pygienium-noop (zero wiring)", () => {
+		const names: string[] = [];
+		registerPygieniumCommands((name) => names.push(name));
+		expect(names).toContain("pygienium-noop");
+		// And the operator commands are still wired.
+		expect(names).toContain("pygienium-help");
+		expect(names).toContain("pygienium-all");
+	});
+
+	it("/pygienium-help lists the noop check", () => {
+		const text = buildPygieniumHelpLines().join("\n");
+		expect(text).toContain("/pygienium-noop");
+		expect(text).toContain(getCheck("noop")!.description);
+	});
+});