fix(server): strip positions from file manager targets

apps/server/src/process/externalLauncher.test.ts

@@ -94,6 +94,48 @@ it.effect("launches the default browser through the platform command", () => {
   );
 });
 
+it.effect("strips line and column positions from file manager targets", () =>
+  Effect.gen(function* () {
+    const fileSystem = yield* FileSystem.FileSystem;
+    const path = yield* Path.Path;
+    const binDir = yield* fileSystem.makeTempDirectoryScoped({ prefix: "t3-file-manager-" });
+    const commandPath = path.join(binDir, "open");
+    yield* fileSystem.writeFileString(commandPath, "#!/bin/sh\n");
+    yield* fileSystem.chmod(commandPath, 0o755);
+
+    const spawned: ChildProcess.StandardCommand[] = [];
+    yield* Effect.gen(function* () {
+      const launcher = yield* ExternalLauncher.ExternalLauncher;
+      for (const cwd of [
+        "/Users/tester/.claude/CLAUDE.md",
+        "/Users/tester/.claude/CLAUDE.md:4",
+        "/Users/tester/.claude/CLAUDE.md:12:4",
+      ]) {
+        yield* launcher.launchEditor({ editor: "file-manager", cwd });
+      }
+    }).pipe(
+      Effect.provide(
+        testLayer({
+          platform: "darwin",
+          env: { PATH: binDir },
+          onSpawn: (command) => {
+            spawned.push(command);
+          },
+        }),
+      ),
+    );
+
+    assert.deepEqual(
+      spawned.map(({ command, args }) => ({ command, args })),
+      [
+        { command: "open", args: ["/Users/tester/.claude/CLAUDE.md"] },
+        { command: "open", args: ["/Users/tester/.claude/CLAUDE.md"] },
+        { command: "open", args: ["/Users/tester/.claude/CLAUDE.md"] },
+      ],
+    );
+  }).pipe(Effect.scoped, Effect.provide(NodeServices.layer)),
+);
+
 it.effect("launches an installed editor with platform-safe arguments", () =>
   Effect.gen(function* () {
     const fileSystem = yield* FileSystem.FileSystem;

apps/server/src/process/externalLauncher.ts

@@ -376,11 +376,15 @@ const resolveEditorLaunch = Effect.fn("resolveEditorLaunch")(function* (
     return yield* new ExternalLauncherUnsupportedEditorError({ editor: input.editor });
   }
 
+  const target = Option.match(parseTargetPathAndPosition(input.cwd), {
+    onNone: () => input.cwd,
+    onSome: ({ path }) => path,
+  });
   return {
     editor: editorDef.id,
-    target: input.cwd,
+    target,
     command: fileManagerCommandForPlatform(platform),
-    args: [input.cwd],
+    args: [target],
   };
 });