fix: make doctor platform-aware

src/server/app.test.ts

@@ -1,4 +1,4 @@
-import { mkdtemp, rm, truncate, writeFile } from "node:fs/promises";
+import { mkdtemp, realpath, rm, truncate, writeFile } from "node:fs/promises";
 import { join } from "node:path";
 import { tmpdir } from "node:os";
 import type { FastifyInstance } from "fastify";
@@ -15,7 +15,7 @@ let tempDir: string;
 let projectDir: string;
 
 beforeEach(async () => {
-  tempDir = await mkdtemp(join(tmpdir(), "pi-web-app-test-"));
+  tempDir = await realpath(await mkdtemp(join(tmpdir(), "pi-web-app-test-")));
   projectDir = join(tempDir, "project");
   app = await buildApp({
     projects: new ProjectService(new ProjectStore(join(tempDir, "projects.json"))),

src/server/diagnostics/nodePtySpawnHelper.test.ts

@@ -42,6 +42,8 @@ describe("node-pty macOS spawn-helper diagnostics", () => {
     expect(formatted.ok).toBe(false);
     expect(formatted.lines).toContain(`  PI WEB tracking issue: ${PI_WEB_SPAWN_HELPER_ISSUE_URL}`);
     expect(formatted.lines).toContain(`    chmod +x '${fixture.helperPath}'`);
+    expect(formatted.lines).toContain("  Then run `pi-web doctor` again and retry opening a terminal.");
+    expect(formatted.lines.join("\n")).not.toContain("restart");
   });
 
   it("passes when the selected helper is executable", async () => {

src/server/diagnostics/nodePtySpawnHelper.ts

@@ -98,7 +98,7 @@ export function formatNodePtyDarwinSpawnHelperCheck(check: NodePtyDarwinSpawnHel
         `  PI WEB tracking issue: ${PI_WEB_SPAWN_HELPER_ISSUE_URL}`,
         "  Proposed workaround:",
         `    ${check.fixCommand}`,
-        "  Then restart the pi-web-sessiond/pi-web-server processes.",
+        "  Then run `pi-web doctor` again and retry opening a terminal.",
       ],
     };
   }