feat: move color themes into a bundled themes plugin

scripts/check-core-plugin-ids.cjs

@@ -34,6 +34,7 @@ const OFFICIAL_IDS = [
   "alerts",
   "automations",
   "classic-layout",
+  "classic-themes",
   "docker",
   "file-manager",
   "fleets",

scripts/plugin-build.test.ts

@@ -35,6 +35,42 @@ function fixturePlugin(): string {
 }
 
 describe("termix-plugin build", () => {
+  it("builds a theme only plugin with an empty backend and no source", async () => {
+    vi.spyOn(console, "log").mockImplementation(() => {});
+    const dir = fs.mkdtempSync(path.join(os.tmpdir(), "termix-build-"));
+    cleanups.push(() => fs.rmSync(dir, { recursive: true, force: true }));
+    fs.writeFileSync(
+      path.join(dir, "manifest.json"),
+      JSON.stringify({
+        id: "theme-fixture",
+        capabilities: ["ui:theme"],
+        contributes: { themes: [{ id: "paper" }] },
+      }),
+    );
+
+    await build({ cwd: dir });
+
+    expect(
+      fs.readFileSync(path.join(dir, "dist", "backend.js"), "utf8"),
+    ).toContain("export function activate()");
+    expect(fs.existsSync(path.join(dir, "dist", "frontend.js"))).toBe(false);
+  });
+
+  it("still needs a backend entry once a plugin holds more than themes", async () => {
+    const dir = fs.mkdtempSync(path.join(os.tmpdir(), "termix-build-"));
+    cleanups.push(() => fs.rmSync(dir, { recursive: true, force: true }));
+    fs.writeFileSync(
+      path.join(dir, "manifest.json"),
+      JSON.stringify({
+        id: "mixed-fixture",
+        capabilities: ["ui:theme", "ui:layout"],
+        contributes: { themes: [{ id: "paper" }] },
+      }),
+    );
+
+    await expect(build({ cwd: dir })).rejects.toThrow("no backend entry");
+  });
+
   it("marks dist as ESM so Node loads backend.js without reparsing", async () => {
     vi.spyOn(console, "log").mockImplementation(() => {});
     const dir = fixturePlugin();

scripts/plugin-validate.test.ts

@@ -99,3 +99,48 @@ describe("termix-plugin validate themes", () => {
     expect(output).not.toContain("theme paper");
   });
 });
+
+describe("termix-plugin validate layouts and capabilities", () => {
+  function withManifest(extra: Record<string, unknown>) {
+    const root = plugin([]);
+    fs.writeFileSync(
+      path.join(root, "manifest.json"),
+      JSON.stringify({ id: "fixture", version: "1.0.0", ...extra }),
+    );
+    return root;
+  }
+
+  it("flags ui:theme with no themes and ui:layout with no layouts", async () => {
+    const output = await problems(
+      withManifest({ capabilities: ["ui:theme", "ui:layout"] }),
+    );
+    expect(output).toContain(
+      '"ui:theme" is declared but contributes.themes is empty',
+    );
+    expect(output).toContain(
+      '"ui:layout" is declared but contributes.layouts is empty',
+    );
+  });
+
+  it("flags a layout plugin with no frontend source", async () => {
+    const output = await problems(
+      withManifest({
+        capabilities: ["ui:layout"],
+        contributes: { layouts: [{ id: "wide", label: "Wide" }] },
+      }),
+    );
+    expect(output).toContain("contributes.layouts needs a frontend");
+  });
+
+  it("accepts a layout plugin that has a frontend entry", async () => {
+    const root = withManifest({
+      capabilities: ["ui:layout"],
+      contributes: { layouts: [{ id: "wide", label: "Wide" }] },
+    });
+    fs.mkdirSync(path.join(root, "src", "frontend"), { recursive: true });
+    fs.writeFileSync(path.join(root, "src", "frontend", "index.tsx"), "");
+    const output = await problems(root);
+    expect(output).not.toContain("contributes.layouts needs a frontend");
+    expect(output).not.toContain("is declared but");
+  });
+});