feat: ship host metrics as a first-party in-process plugin

src/backend/tests/plugins/first-party.test.ts

@@ -39,16 +39,18 @@ function manifest(overrides: Record<string, unknown> = {}) {
 }
 
 describe("first-party allowlist", () => {
-  it("contains only ssh-terminal and docker", () => {
+  it("contains only ssh-terminal, docker and host-metrics", () => {
     expect([...FIRST_PARTY_PLUGIN_IDS].sort()).toEqual([
       "docker",
+      "host-metrics",
       "ssh-terminal",
     ]);
   });
 
-  it("recognises ssh-terminal and docker and nothing else", () => {
+  it("recognises ssh-terminal, docker and host-metrics and nothing else", () => {
     expect(isFirstParty("ssh-terminal")).toBe(true);
     expect(isFirstParty("docker")).toBe(true);
+    expect(isFirstParty("host-metrics")).toBe(true);
     expect(isFirstParty("ssh-terminal-pro")).toBe(false);
     expect(isFirstParty("community-plugin")).toBe(false);
     expect(isFirstParty("")).toBe(false);
@@ -61,11 +63,15 @@ describe("runsInProcess", () => {
       true,
     );
     expect(runsInProcess("docker", [TRANSPORT_OWNER_CAPABILITY])).toBe(true);
+    expect(runsInProcess("host-metrics", [TRANSPORT_OWNER_CAPABILITY])).toBe(
+      true,
+    );
 
     // On the list but not asking for it: stays in a worker, so the manifest
     // remains an honest description of what the plugin does.
     expect(runsInProcess("ssh-terminal", ["hosts.read"])).toBe(false);
     expect(runsInProcess("docker", ["hosts.read"])).toBe(false);
+    expect(runsInProcess("host-metrics", ["hosts.read"])).toBe(false);
 
     // Asking for it but not on the list.
     expect(
@@ -121,6 +127,18 @@ describe("manifest gate on the reserved capability", () => {
     expect(parsed?.id).toBe("docker");
   });
 
+  it("allows it for host-metrics", () => {
+    const { manifest: parsed, errors } = parseManifest(
+      manifest({
+        id: "host-metrics",
+        permissions: [TRANSPORT_OWNER_CAPABILITY],
+      }),
+    );
+
+    expect(errors).toEqual([]);
+    expect(parsed?.id).toBe("host-metrics");
+  });
+
   it("still accepts an ordinary manifest that never mentions it", () => {
     const { manifest: parsed, errors } = parseManifest(
       manifest({ permissions: ["hosts.read"] }),