upgrade Electron 39→42 and fix Hyprland overlay z-order/placement (#79)

launcher/config/args-normalizer.test.ts

@@ -3,40 +3,13 @@ import fs from 'node:fs';
 import os from 'node:os';
 import path from 'node:path';
 import test from 'node:test';
+import { withProcessExitIntercept } from '../test-support/exit-intercept.js';
 import {
   applyInvocationsToArgs,
   applyRootOptionsToArgs,
   createDefaultArgs,
 } from './args-normalizer.js';
 
-class ExitSignal extends Error {
-  code: number;
-
-  constructor(code: number) {
-    super(`exit:${code}`);
-    this.code = code;
-  }
-}
-
-function withProcessExitIntercept(callback: () => void): ExitSignal {
-  const originalExit = process.exit;
-  try {
-    process.exit = ((code?: number) => {
-      throw new ExitSignal(code ?? 0);
-    }) as typeof process.exit;
-    callback();
-  } catch (error) {
-    if (error instanceof ExitSignal) {
-      return error;
-    }
-    throw error;
-  } finally {
-    process.exit = originalExit;
-  }
-
-  throw new Error('expected process.exit');
-}
-
 function withTempDir<T>(fn: (dir: string) => T): T {
   const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'subminer-launcher-args-'));
   try {
@@ -106,6 +79,7 @@ test('applyRootOptionsToArgs rejects unsupported targets', () => {
 
   assert.equal(error.code, 1);
   assert.match(error.message, /exit:1/);
+  assert.match(error.stderr, /Not a file, directory, or supported URL/);
 });
 
 test('applyInvocationsToArgs maps config and jellyfin invocation state', () => {
@@ -231,6 +205,7 @@ test('applyInvocationsToArgs fails when config invocation has no action', () =>
   });
 
   assert.equal(error.code, 1);
+  assert.match(error.stderr, /Unknown config action: \(none\)/);
 });
 
 test('applyInvocationsToArgs maps texthooker browser-open request', () => {

launcher/mpv.test.ts

@@ -7,6 +7,7 @@ import net from 'node:net';
 import { EventEmitter } from 'node:events';
 import type { Args } from './types';
 import { getAppControlSocketPath } from '../src/shared/app-control';
+import { withProcessExitIntercept } from './test-support/exit-intercept.js';
 import {
   buildConfiguredMpvDefaultArgs,
   buildMpvBackendArgs,
@@ -28,34 +29,6 @@ import {
 } from './mpv';
 import * as mpvModule from './mpv';
 
-class ExitSignal extends Error {
-  code: number;
-
-  constructor(code: number) {
-    super(`exit:${code}`);
-    this.code = code;
-  }
-}
-
-function withProcessExitIntercept(callback: () => void): ExitSignal {
-  const originalExit = process.exit;
-  try {
-    process.exit = ((code?: number) => {
-      throw new ExitSignal(code ?? 0);
-    }) as typeof process.exit;
-    callback();
-  } catch (error) {
-    if (error instanceof ExitSignal) {
-      return error;
-    }
-    throw error;
-  } finally {
-    process.exit = originalExit;
-  }
-
-  throw new Error('expected process.exit');
-}
-
 function createTempSocketPath(): { dir: string; socketPath: string } {
   const baseDir = path.join(process.cwd(), '.tmp', 'launcher-mpv-tests');
   fs.mkdirSync(baseDir, { recursive: true });
@@ -393,6 +366,7 @@ test('launchTexthookerOnly exits non-zero when app binary cannot be spawned', ()
   });
 
   assert.equal(error.code, 1);
+  assert.match(error.stderr, /Failed to launch texthooker mode/);
 });
 
 test('launchTexthookerOnly forwards browser-open request to app command', () => {

launcher/parse-args.test.ts

@@ -1,34 +1,7 @@
 import test from 'node:test';
 import assert from 'node:assert/strict';
 import { parseArgs } from './config';
-
-class ExitSignal extends Error {
-  code: number;
-
-  constructor(code: number) {
-    super(`exit:${code}`);
-    this.code = code;
-  }
-}
-
-function withProcessExitIntercept(callback: () => void): ExitSignal {
-  const originalExit = process.exit;
-  try {
-    process.exit = ((code?: number) => {
-      throw new ExitSignal(code ?? 0);
-    }) as typeof process.exit;
-    callback();
-  } catch (error) {
-    if (error instanceof ExitSignal) {
-      return error;
-    }
-    throw error;
-  } finally {
-    process.exit = originalExit;
-  }
-
-  throw new Error('expected parseArgs to exit');
-}
+import { withProcessExitIntercept } from './test-support/exit-intercept.js';
 
 test('parseArgs captures passthrough args for app subcommand', () => {
   const parsed = parseArgs(['app', '--anilist', '--log-level', 'debug'], 'subminer', {});
@@ -131,7 +104,9 @@ test('parseArgs rejects removed config open and launch actions', () => {
   });
 
   assert.equal(openExit.code, 1);
+  assert.match(openExit.stderr, /Unknown config action: open/);
   assert.equal(exit.code, 1);
+  assert.match(exit.stderr, /Unknown config action: launch/);
 });
 
 test('parseArgs requires an explicit action for the config subcommand', () => {
@@ -140,6 +115,7 @@ test('parseArgs requires an explicit action for the config subcommand', () => {
   });
 
   assert.equal(exit.code, 1);
+  assert.match(exit.stderr, /Unknown config action: \(none\)/);
 });
 
 test('parseArgs maps mpv idle action', () => {
@@ -180,6 +156,7 @@ test('parseArgs rejects conflicting dictionary candidate and selection modes', (
   });
 
   assert.equal(exit.code, 1);
+  assert.match(exit.stderr, /Dictionary --candidates and --select cannot be combined/);
 });
 
 test('parseArgs maps stats command and log-level override', () => {
@@ -243,6 +220,7 @@ test('parseArgs rejects cleanup-only stats flags without cleanup action', () =>
 
   assert.equal(error.code, 1);
   assert.match(error.message, /exit:1/);
+  assert.match(error.stderr, /Stats --vocab and --lifetime flags require the cleanup action/);
 });
 
 test('parseArgs maps stats rebuild action to cleanup lifetime mode', () => {

launcher/test-support/exit-intercept.ts

@@ -0,0 +1,47 @@
+export class ExitSignal extends Error {
+  code: number;
+  stderr: string;
+
+  constructor(code: number, stderr: string) {
+    super(`exit:${code}`);
+    this.code = code;
+    this.stderr = stderr;
+  }
+}
+
+function stderrChunkToString(chunk: string | Uint8Array, encoding?: BufferEncoding): string {
+  if (typeof chunk === 'string') return chunk;
+  return Buffer.from(chunk).toString(encoding);
+}
+
+export function withProcessExitIntercept(callback: () => void): ExitSignal {
+  const originalExit = process.exit;
+  const originalStderrWrite = process.stderr.write;
+  let stderr = '';
+
+  try {
+    process.stderr.write = ((chunk: string | Uint8Array, ...args: unknown[]) => {
+      const encoding = typeof args[0] === 'string' ? (args[0] as BufferEncoding) : undefined;
+      stderr += stderrChunkToString(chunk, encoding);
+      const writeCallback = args.find((arg): arg is (error?: Error | null) => void => {
+        return typeof arg === 'function';
+      });
+      writeCallback?.();
+      return true;
+    }) as typeof process.stderr.write;
+    process.exit = ((code?: number) => {
+      throw new ExitSignal(code ?? 0, stderr);
+    }) as typeof process.exit;
+    callback();
+  } catch (error) {
+    if (error instanceof ExitSignal) {
+      return error;
+    }
+    throw error;
+  } finally {
+    process.stderr.write = originalStderrWrite;
+    process.exit = originalExit;
+  }
+
+  throw new Error('expected process.exit');
+}