feat: add ChatGPT upload packages

[sergstack]

Summary

Adds final ChatGPT upload packages and the reproducible generator that builds them:

• publish/chatgpt_project_compact_gold/ — compact Gold package in the same upload shape as chatgpt_project_compact, built from 105 supported/approved cards.
• publish/chatgpt_project_compact_general/ — full compact general package.
• scripts/build_chatgpt_upload_packages.py — reproducible package generator.
• managed pipeline now rebuilds Gold/General packages after release gates.

Checks run

• python3 -m pytest tests/test_chatgpt_upload_packages.py -q
• git diff --check
• forbidden path scan for .env, input/raw, workspace, chunks, logs, tmp files, .DS_Store
• large file scan for files over 10 MB

Safety

• Source repo history was not pushed.
• No .env file was included.
• No input/raw or workspace folders were included.
• No force-push was used.

Note

Secret-pattern scan found only a placeholder example OPENAI_API_KEY="your_key" in the General KB content, not a live key.