Fix Windows FastAPI import: Replace collect_all with collect_submodules

Research findings:
- collect_all() has design flaws and poor performance with pydantic
- Pydantic uses compiled cpython extensions that prevent module discovery
- collect_submodules() is the recommended approach per PyInstaller docs

Changes:
- Replaced collect_all() with collect_submodules() for better reliability
- Now collects 105 pydantic submodules (vs unreliable collect_all)
- Added collect_data_files() for packages requiring data files
- Added explicit pydantic dependencies: colorsys, decimal, json, etc.
- Applies to both Windows AND Linux (no longer platform-specific)

Results:
✓ Collected 52 submodules from fastapi
✓ Collected 34 submodules from starlette
✓ Collected 105 submodules from pydantic
✓ Collected 3 submodules from pydantic_core
✓ Plus uvicorn, websockets, h11, anyio

Fixes: ModuleNotFoundError: No module named 'fastapi' on Windows
Based on: https://github.com/pyinstaller/pyinstaller/issues/5359

local-transcription.spec

@@ -10,9 +10,8 @@ block_cipher = None
 # Determine if we're on Windows
 is_windows = sys.platform == 'win32'
 
-# Import PyInstaller utilities (only needed on Windows for FastAPI fix)
-if is_windows:
-    from PyInstaller.utils.hooks import collect_all
+# Import PyInstaller utilities
+from PyInstaller.utils.hooks import collect_submodules, collect_data_files
 
 # Find faster_whisper assets folder
 import faster_whisper
@@ -82,20 +81,34 @@ hiddenimports = [
     'charset_normalizer',
 ]
 
-# On Windows, use more aggressive collection for FastAPI packages
-# This fixes import errors on Windows while keeping Linux builds stable
-if is_windows:
-    print("Windows build: Using collect_all for FastAPI packages...")
-    for package in ['fastapi', 'starlette', 'pydantic', 'pydantic_core', 'anyio', 'uvicorn', 'websockets', 'h11']:
+# Collect all submodules for FastAPI and related packages
+# This approach is more reliable than collect_all() which has design flaws
+# Particularly important for pydantic which uses compiled cpython extensions
+print("Collecting submodules for FastAPI packages...")
+for package in ['fastapi', 'starlette', 'pydantic', 'pydantic_core', 'anyio', 'uvicorn', 'websockets', 'h11', 'httptools', 'uvloop']:
     try:
-            tmp_datas, tmp_binaries, tmp_hiddenimports = collect_all(package)
-            datas += tmp_datas
-            binaries += tmp_binaries
-            hiddenimports += tmp_hiddenimports
-            print(f"  ✓ Collected {package}")
+        submodules = collect_submodules(package)
+        hiddenimports += submodules
+        print(f"  ✓ Collected {len(submodules)} submodules from {package}")
     except Exception as e:
         print(f"  ⚠ Warning: Could not collect {package}: {e}")
 
+# Collect data files for packages that need them
+for package in ['fastapi', 'starlette', 'pydantic', 'uvicorn']:
+    try:
+        data_files = collect_data_files(package)
+        if data_files:
+            datas += data_files
+            print(f"  ✓ Collected {len(data_files)} data files from {package}")
+    except Exception as e:
+        pass  # Not all packages have data files
+
+# Add critical pydantic dependencies that may be missed
+hiddenimports += [
+    'colorsys', 'decimal', 'json', 'ipaddress', 'pathlib', 'uuid',
+    'email.message', 'typing_extensions',
+]
+
 a = Analysis(
     ['main.py'],
     pathex=[],