Fix Windows build: Add FastAPI and dependencies to hiddenimports

Fixed PyInstaller build error on Windows:
"ModuleNotFoundError: No module named 'fastapi'"

Added to hiddenimports:
- FastAPI and its core modules
- Starlette (FastAPI framework base)
- Pydantic (data validation)
- anyio, sniffio (async libraries)
- h11, websockets (protocol implementations)
- requests and dependencies (for server sync client)

This ensures all web server dependencies are bundled in the executable.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

local-transcription.spec

@@ -37,7 +37,25 @@ a = Analysis(
         'scipy',
         'scipy.signal',
         'numpy',
+        # FastAPI and dependencies
         'fastapi',
+        'fastapi.routing',
+        'fastapi.responses',
+        'starlette',
+        'starlette.applications',
+        'starlette.routing',
+        'starlette.responses',
+        'starlette.websockets',
+        'starlette.middleware',
+        'starlette.middleware.cors',
+        'pydantic',
+        'pydantic.fields',
+        'pydantic.main',
+        'anyio',
+        'anyio._backends',
+        'anyio._backends._asyncio',
+        'sniffio',
+        # Uvicorn and dependencies
         'uvicorn',
         'uvicorn.logging',
         'uvicorn.loops',
@@ -45,10 +63,21 @@ a = Analysis(
         'uvicorn.protocols',
         'uvicorn.protocols.http',
         'uvicorn.protocols.http.auto',
+        'uvicorn.protocols.http.h11_impl',
         'uvicorn.protocols.websockets',
         'uvicorn.protocols.websockets.auto',
+        'uvicorn.protocols.websockets.wsproto_impl',
         'uvicorn.lifespan',
         'uvicorn.lifespan.on',
+        'h11',
+        'websockets',
+        'websockets.legacy',
+        'websockets.legacy.server',
+        # Requests (for server sync)
+        'requests',
+        'urllib3',
+        'certifi',
+        'charset_normalizer',
     ],
     hookspath=[],
     hooksconfig={},