[Bug] Inno Setup compilation fails due to Windows MAX_PATH limit with nested HuggingFace cache paths

Bug Description
Inno Setup compile failed with error "The system cannot find the path specified" during compression.

Error analysis:

1. Long Path Limit (MAX_PATH 260 chars): Deeply nested HuggingFace cache paths inside PyInstaller dist directory (e.g. _internal\huggingface_cache\hub\models--sentence-transformers\...) combined with relative paths (..\..\) exceed Windows path limits.
2. Inno Setup macro {#BundleSourceDir} resolves to an overly long relative path.

Please fix this in setup_script.iss and the build script (e.g., scripts/build_all.py):

1. Create a Clean Staging Directory: Update the python/bat build script to stage/copy all output files (AutoCAD DLL, GstarCAD DLL, and PyInstaller dist) into a flat, shallow staging folder (e.g., build/stage/) before running Inno Setup.
2. Clean up HuggingFace Cache Structure:

• Move or copy sentence-transformer model files to a shallow directory (e.g., _internal/models/sentence_transformer) instead of keeping the deep HuggingFace .cache/hub/models--... folder structure.
• Exclude unnecessary temporary files/caches from being packed by Inno Setup.

1. Update Inno Setup Script (setup_script.iss):

• Ensure {#BundleSourceDir} points to the clean, shallow staging folder using an absolute or short relative path.
• Verify all Source: definitions do not break MAX_PATH limits.

Environment Info

• Platform: win32
• Terminal: null
• Version: 2.1.218
• Feedback ID: f36daf9f-ad4b-48ab-b7c0-8fc67887d334

Errors

[{"error":"TelemetrySafeError: VirtualMessageList: itemKeys/messages length desync (keys=62 messages=61 range=[44,62))\n    at i3b (B:/~BUN/root/src/entrypoints/cli.js:18388:8188)\n    at Flf (B:/~BUN/root/src/entrypoints/cli.js:18388:1103)\n    at Jn (B:/~BUN/root/src/entrypoints/cli.js:2101:21364)\n    at fS (B:/~BUN/root/src/entrypoints/cli.js:2101:40461)\n    at lO (B:/~BUN/root/src/entrypoints/cli.js:2101:51387)\n    at iLe (B:/~BUN/root/src/entrypoints/cli.js:2101:89050)\n    at oLe (B:/~BUN/root/src/entrypoints/cli.js:2101:88003)\n    at cge (B:/~BUN/root/src/entrypoints/cli.js:2101:87823)\n    at X9 (B:/~BUN/root/src/entrypoints/cli.js:2101:84092)\n    at Pt (B:/~BUN/root/src/entrypoints/cli.js:2101:6664)","timestamp":"2026-08-05T06:12:16.370Z"}]