Remove unused files: old UI, build scripts, fonts, test files

Remove old widget-based Python UI (replaced by QML), unused build
scripts, NL/variable/webfont variants, old shaders, PNG icons
(replaced by SVGs), and standalone test files. Add build.bat and
build.spec for the bootstrapper build system.

build.spec

@@ -0,0 +1,95 @@
+# -*- mode: python ; coding: utf-8 -*-
+# WhisperVoice — Single-file portable bootstrapper
+#
+# This builds a TINY exe that contains only:
+#   - The bootstrapper (downloads Python + deps on first run)
+#   - The app source code (bundled as data, extracted to runtime/app/)
+#
+# NO heavy dependencies (torch, PySide6, etc.) are bundled.
+
+import os
+import glob
+
+block_cipher = None
+
+# ── Collect app source as data (goes into app_source/ inside the bundle) ──
+
+app_datas = []
+
+# main.py
+app_datas.append(('main.py', 'app_source'))
+
+# requirements.txt
+app_datas.append(('requirements.txt', 'app_source'))
+
+# src/**/*.py  (core, ui, utils — preserving directory structure)
+for py in glob.glob('src/**/*.py', recursive=True):
+    dest = os.path.join('app_source', os.path.dirname(py))
+    app_datas.append((py, dest))
+
+# src/ui/qml/** (QML files, shaders, SVGs, fonts, qmldir)
+qml_dir = os.path.join('src', 'ui', 'qml')
+for pattern in ('*.qml', '*.qsb', '*.frag', '*.svg', '*.ico', '*.png',
+                'qmldir', 'AUTHORS.txt', 'OFL.txt'):
+    for f in glob.glob(os.path.join(qml_dir, pattern)):
+        app_datas.append((f, os.path.join('app_source', qml_dir)))
+
+# Fonts
+for f in glob.glob(os.path.join(qml_dir, 'fonts', 'ttf', '*.ttf')):
+    app_datas.append((f, os.path.join('app_source', qml_dir, 'fonts', 'ttf')))
+
+# assets/
+if os.path.exists(os.path.join('assets', 'icon.ico')):
+    app_datas.append((os.path.join('assets', 'icon.ico'), os.path.join('app_source', 'assets')))
+
+# ── Analysis — only the bootstrapper, NO heavy imports ────────────────────
+
+a = Analysis(
+    ['bootstrapper.py'],
+    pathex=[],
+    binaries=[],
+    datas=app_datas,
+    hiddenimports=[],
+    hookspath=[],
+    hooksconfig={},
+    runtime_hooks=[],
+    excludes=[
+        # Exclude everything heavy — the bootstrapper only uses stdlib
+        'torch', 'numpy', 'scipy', 'PySide6', 'shiboken6',
+        'faster_whisper', 'ctranslate2', 'llama_cpp',
+        'sounddevice', 'soundfile', 'keyboard', 'pyperclip',
+        'psutil', 'pynvml', 'pystray', 'PIL', 'Pillow',
+        'darkdetect', 'huggingface_hub', 'requests',
+        'tqdm', 'onnxruntime', 'av',
+        'tkinter', 'matplotlib', 'notebook', 'IPython',
+    ],
+    win_no_prefer_redirects=False,
+    win_private_assemblies=False,
+    cipher=block_cipher,
+    noarchive=False,
+)
+
+pyz = PYZ(a.pure, a.zipped_data, cipher=block_cipher)
+
+# ── Single-file EXE (--onefile) ──────────────────────────────────────────
+
+exe = EXE(
+    pyz,
+    a.scripts,
+    a.binaries,
+    a.zipfiles,
+    a.datas,
+    [],
+    name='WhisperVoice',
+    debug=False,
+    bootloader_ignore_signals=False,
+    strip=False,
+    upx=True,
+    console=False,       # No console — bootstrapper allocates one when needed
+    disable_windowed_traceback=False,
+    argv_emulation=False,
+    target_arch=None,
+    codesign_identity=None,
+    entitlements_file=None,
+    icon='assets/icon.ico',
+)