H5 (traceback leak, completing the prior log-level fix): new app/utils/security.py
safe_traceback() logs the full stack server-side and returns it to clients only when
FLASK_DEBUG; all 53 traceback.format_exc() in api/{graph,report,simulation}.py now call
it (import traceback removed).
Upload content sniff: upload_content_ok() magic-byte check — pdf must start %PDF-,
txt/md/markdown rejected if they contain NUL bytes (BOM-prefixed UTF-16/32/8 text
allowed). Wired into the graph.py upload loop so a renamed binary can't pass the
extension whitelist.
Path validation: validate_id() (^[A-Za-z0-9_-]{1,64}$) blocks traversal before every
id->filesystem sink — ProjectManager._get_project_dir, SimulationManager._get_simulation_dir,
ReportManager._get_report_folder + the two Report*Logger __init__, and a new
SimulationRunner._run_dir() that all RUN_STATE_DIR joins route through.
CSP / security headers: CSP <meta> in index.html, vite preview.headers
(X-Frame-Options/nosniff/Referrer-Policy + CSP frame-ancestors), and a Flask
after_request that sets the same headers on API responses.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Background threads (graph building, simulation prep, report generation,
profile generation) now inherit the requesting user's locale preference.
Previously these fell back to 'zh' because Flask request context was
unavailable in spawned threads.
- Updated README.md to reflect the removal of the project creation endpoint, adjusting the workflow steps accordingly.
- Removed the `create_project` function from graph.py, streamlining the project management API by eliminating deprecated functionality.
Yo-LRK
ghostubborn
666ghj