feat(service): Windows lifecycle integration candidate (SCM host + graceful stop)

.github/workflows/ci.yml

@@ -206,7 +206,7 @@ jobs:
 
       - name: Check Rust formatting
         run: |
-          for crate in resource-monitor kde-snap-shot hyprland-snap-shot; do
+          for crate in resource-monitor kde-snap-shot hyprland-snap-shot windows-service-host; do
             cargo fmt --manifest-path "native/$crate/Cargo.toml" -- --check
           done
 
@@ -216,6 +216,14 @@ jobs:
             cargo test --locked --manifest-path "native/$crate/Cargo.toml"
           done
 
+      - name: Check portable Windows service host
+        run: cargo test --locked --features test-child --manifest-path native/windows-service-host/Cargo.toml
+
+      - name: Check Windows service host target
+        run: |
+          rustup target add x86_64-pc-windows-gnu
+          cargo check --locked --target x86_64-pc-windows-gnu --manifest-path native/windows-service-host/Cargo.toml
+
   # The static analysis below needs a macOS runner, which bills ~6.7x a Linux
   # minute, so gate it on the native sources it actually lints instead of paying
   # for it on every push. Detection is API-only (no checkout) and fails open: if

apps/server/src/cli/service.test.ts

@@ -23,11 +23,17 @@ import {
 afterEach(() => vi.restoreAllMocks());
 
 const status = {
+  schemaVersion: BootService.BOOT_SERVICE_STATUS_SCHEMA_VERSION,
   supported: true,
+  manager: "systemd",
   installed: true,
+  enabled: "enabled",
+  running: "running",
   current: true,
+  configuredVersion: "0.0.29",
   unitPath: "/home/me/.config/systemd/user/t3code.service",
   logPath: "/home/me/.t3/userdata/logs/boot-service.log",
+  observedAt: "2026-09-26T00:00:00.000Z",
 } as const;
 
 it("reports the installed service version and host paths", () => {
@@ -95,6 +101,114 @@ it("reports a newer installed service and tells the CLI to catch up to it", () =
   assert.notInclude(output, "npx");
 });
 
+const observation = {
+  manager: "systemd",
+  source: "systemctl --user show t3code.service",
+  observedAt: "2026-09-26T00:00:00.000Z",
+  reachable: true,
+  enabled: "enabled",
+  running: "running",
+  state: "active",
+  subState: "running",
+  processId: 4321,
+  configuredProgramPath: "/home/me/.t3/runtime/versions/0.0.29/t3",
+  configuredVersion: "0.0.29",
+  restartCount: 0,
+  lastResult: "success",
+} satisfies BootService.BootServiceManagerObservation;
+
+it("emits the versioned machine-readable status contract with --json", () => {
+  const parsed = JSON.parse(
+    formatServiceStatus({ ...status, observation }, "0.0.29", { json: true }),
+  ) as Record<string, unknown>;
+
+  expect(parsed.schemaVersion).toBe(BootService.BOOT_SERVICE_STATUS_SCHEMA_VERSION);
+  expect(parsed.schemaVersion).toBe(2);
+  expect(parsed.manager).toBe("systemd");
+  expect(parsed.running).toBe("running");
+  expect(parsed.cliVersion).toBe("0.0.29");
+  expect(parsed.unitPath).toBe(status.unitPath);
+  // Configured launch metadata is separate and there is no observed running
+  // server version in this contract.
+  expect(parsed.configuredVersion).toBe("0.0.29");
+  expect("runningVersion" in parsed).toBe(false);
+  const observationJson = parsed.observation as Record<string, unknown>;
+  expect(observationJson.configuredVersion).toBe("0.0.29");
+  expect(observationJson.configuredProgramPath).toBe("/home/me/.t3/runtime/versions/0.0.29/t3");
+  expect("runningVersion" in observationJson).toBe(false);
+});
+
+it("keeps human status output and adds manager observation lines", () => {
+  const output = formatServiceStatus({ ...status, observation }, "0.0.29");
+
+  expect(output).toContain("Status: installed · t3@0.0.29");
+  expect(output).toContain("Manager: systemd · running running");
+  expect(output).toContain("Configured launcher: t3@0.0.29");
+  expect(output).toContain("Manager state: active/running");
+  expect(output).toContain("Enabled: enabled");
+  expect(output).toContain(
+    "Observed: 2026-09-26T00:00:00.000Z (systemctl --user show t3code.service)",
+  );
+  expect(output).not.toContain("Note:");
+  expect(output).not.toContain("t3@0.0.29 (running)");
+});
+
+it("does not report a non-running manager observation as healthy", () => {
+  const output = formatServiceStatus(
+    {
+      ...status,
+      running: "not-loaded",
+      observation: { ...observation, running: "not-loaded", detail: "launch-agent-not-loaded" },
+    },
+    "0.0.29",
+  );
+
+  expect(output).toContain("Manager: systemd · running not loaded");
+  expect(output).toContain("Manager detail: launch-agent-not-loaded");
+  expect(output).toContain("that is a manager observation, not application health");
+});
+
+it("reports a transitioning manager state without calling it stopped or healthy", () => {
+  const output = formatServiceStatus(
+    {
+      ...status,
+      running: "transitioning",
+      observation: {
+        ...observation,
+        running: "transitioning",
+        state: "deactivating",
+        subState: "stop-sigterm",
+      },
+    },
+    "0.0.29",
+  );
+
+  expect(output).toContain("Manager: systemd · running changing state");
+  expect(output).toContain("Manager state: deactivating/stop-sigterm");
+  expect(output).toContain("that is a manager observation, not application health");
+  expect(output).not.toContain("running stopped");
+});
+
+it("shows the configured program path when it carries no exact version", () => {
+  const {
+    configuredVersion: _configuredVersion,
+    configuredProgramPath: _configuredProgramPath,
+    ...observationWithoutBinding
+  } = observation;
+  const output = formatServiceStatus(
+    {
+      ...status,
+      observation: {
+        ...observationWithoutBinding,
+        configuredProgramPath: "/home/me/.t3/runtime/versions/nightly/t3",
+      },
+    },
+    "0.0.29",
+  );
+
+  expect(output).toContain("Configured launcher: /home/me/.t3/runtime/versions/nightly/t3");
+});
+
 const newerServiceStatus = { ...status, current: false, installedVersion: "999.0.0" };
 
 function makeTestService(serviceStatus: BootService.BootServiceStatus) {

apps/server/src/cli/service.ts

@@ -2,6 +2,7 @@ import { HostProcessPlatform } from "@t3tools/shared/hostProcess";
 import * as Console from "effect/Console";
 import * as Effect from "effect/Effect";
 import * as Layer from "effect/Layer";
+import * as References from "effect/References";
 import * as Terminal from "effect/Terminal";
 import { Command, Flag, GlobalFlag, Prompt } from "effect/unstable/cli";
 import { FetchHttpClient } from "effect/unstable/http";
@@ -66,9 +67,13 @@ export const reconcileService = Effect.fn("cli.service.reconcile")(function* (op
 export function formatServiceStatus(
   status: BootService.BootServiceStatus,
   cliVersion: string,
+  options?: { readonly json?: boolean },
 ): string {
+  if (options?.json) {
+    return JSON.stringify({ ...status, cliVersion }, null, 2);
+  }
   if (!status.supported) {
-    return "T3 Code service\n  Status: unavailable on this machine\n  Supported on: Linux with systemd, macOS with launchd";
+    return "T3 Code service\n  Status: unavailable on this machine\n  Supported on: Linux with systemd, macOS with launchd, and Windows with the T3 service host and an explicit service account";
   }
   if (!status.installed) {
     return "T3 Code service\n  Status: not installed\n  Next: Run `t3 service install`.";
@@ -77,6 +82,8 @@ export function formatServiceStatus(
   const problems = (status.problems ?? []).map(
     (problem) => `  [${problem}] ${BootService.formatBootServiceProblem(problem)}`,
   );
+  const observationLines = formatServiceObservation(status);
+  const warning = formatServiceObservationWarning(status);
   if (
     !status.current &&
     status.installedVersion !== undefined &&
@@ -87,7 +94,9 @@ export function formatServiceStatus(
       `  Status: installed · t3@${installedVersion} (newer than this t3@${cliVersion} CLI)`,
       `  Unit: ${status.unitPath}`,
       `  Logs: ${status.logPath}`,
+      ...observationLines,
       ...problems,
+      ...warning,
       `  Next: Run \`t3 update ${installedVersion}\` to match it, or pass \`--allow-downgrade\` to \`t3 service install\` explicitly.`,
     ].join("\n");
   }
@@ -96,20 +105,88 @@ export function formatServiceStatus(
     `  Status: ${status.current ? `installed · t3@${installedVersion}` : "needs an update or repair"}`,
     `  Unit: ${status.unitPath}`,
     `  Logs: ${status.logPath}`,
+    ...observationLines,
     ...problems,
+    ...warning,
     ...(status.current ? [] : ["  Next: Run `t3 service install` to repair it."]),
   ].join("\n");
 }
 
+/** Manager observation lines. Additive: absent when no live observation exists. */
+function formatServiceObservation(status: BootService.BootServiceStatus): ReadonlyArray<string> {
+  const observation = status.observation;
+  if (observation === undefined) return [];
+  const running =
+    observation.running === "running"
+      ? "running"
+      : observation.running === "stopped"
+        ? "stopped"
+        : observation.running === "transitioning"
+          ? "changing state"
+          : observation.running === "not-loaded"
+            ? "not loaded"
+            : "unknown";
+  const configured =
+    observation.configuredVersion !== undefined
+      ? `t3@${observation.configuredVersion}`
+      : observation.configuredProgramPath;
+  const rawState =
+    observation.state === undefined
+      ? undefined
+      : observation.subState === undefined
+        ? observation.state
+        : `${observation.state}/${observation.subState}`;
+  return [
+    `  Manager: ${observation.manager} · running ${running}`,
+    `  Enabled: ${observation.enabled}`,
+    ...(configured === undefined ? [] : [`  Configured launcher: ${configured}`]),
+    ...(rawState === undefined ? [] : [`  Manager state: ${rawState}`]),
+    ...(observation.restartCount === undefined
+      ? []
+      : [`  Restarts (systemd, monotonic since start): ${observation.restartCount}`]),
+    ...(observation.lastResult === undefined ? [] : [`  Last result: ${observation.lastResult}`]),
+    ...(observation.detail === undefined ? [] : [`  Manager detail: ${observation.detail}`]),
+    `  Observed: ${observation.observedAt} (${observation.source})`,
+  ];
+}
+
+/**
+ * A non-running manager observation must not read as healthy, but a state file
+ * and `current` cannot prove the server answers either. Keep both claims
+ * separate and say which one the note is based on.
+ */
+function formatServiceObservationWarning(
+  status: BootService.BootServiceStatus,
+): ReadonlyArray<string> {
+  const observation = status.observation;
+  if (observation === undefined || observation.running === "running") return [];
+  return [
+    `  Note: the service manager reports the job as '${observation.running}'; that is a manager observation, not application health.`,
+  ];
+}
+
 const runServiceCommand = Effect.fn("cli.service.run")(function* <A, E>(
   flags: { readonly baseDir: Parameters<typeof resolveCliAuthConfig>[0]["baseDir"] },
   run: Effect.Effect<A, E, BootService.BootService>,
+  options?: { readonly quietLogs?: boolean },
 ) {
   const logLevel = yield* GlobalFlag.LogLevel;
   const config = yield* resolveCliAuthConfig(flags, logLevel);
-  return yield* run.pipe(Effect.provide(bootServiceLayer(config)));
+  const minimumLogLevel = options?.quietLogs ? "Error" : config.logLevel;
+  return yield* run.pipe(
+    Effect.provide(
+      bootServiceLayer(config).pipe(
+        Layer.provide(Layer.succeed(References.MinimumLogLevel, minimumLogLevel)),
+      ),
+    ),
+  );
 });
 
+const jsonFlag = Flag.Boolean("json").pipe(
+  Flag.withDescription("Emit JSON instead of human-readable output."),
+  Flag.withDefault(false),
+);
+
 const serviceReconcileFlags = {
   ...projectLocationFlags,
   allowDowngrade: Flag.Boolean("allow-downgrade").pipe(
@@ -201,15 +278,20 @@ const serviceUninstallCommand = Command.make("uninstall", projectLocationFlags).
   ),
 );
 
-const serviceStatusCommand = Command.make("status", projectLocationFlags).pipe(
+const serviceStatusCommand = Command.make("status", {
+  ...projectLocationFlags,
+  json: jsonFlag,
+}).pipe(
   Command.withDescription("Show whether the T3 Code background service is installed."),
   Command.withHandler((flags) =>
     runServiceCommand(
       flags,
       Effect.gen(function* () {
         const service = yield* BootService.BootService;
-        yield* Console.log(formatServiceStatus(yield* service.status, packageJson.version));
+        const status = yield* service.status;
+        yield* Console.log(formatServiceStatus(status, packageJson.version, { json: flags.json }));
       }),
+      { quietLogs: flags.json },
     ),
   ),
 );