Initial commit: PastPaper Master full stack

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend/fill_manual_study_aids.py

@@ -0,0 +1,29 @@
+"""Deprecated: study aids must come from LLM output, not template fillers."""
+
+from __future__ import annotations
+
+import sys
+
+
+MESSAGE = """
+fill_manual_study_aids.py is intentionally disabled.
+
+Reason:
+- knowledge_reminder / ai_hint / solution must be generated by LLM
+- template-based filler content polluted the COMP2211 course library
+
+Use one of these paths instead:
+1. Regenerate study aids through the real LLM pipeline in app/services/paper_processor.py
+2. Rebuild paper_questions from a reviewed source and then run LLM generation
+
+This script must not be used to backfill production study aids.
+""".strip()
+
+
+def main() -> None:
+    print(MESSAGE, file=sys.stderr)
+    raise SystemExit(1)
+
+
+if __name__ == "__main__":
+    main()