feat: redesign my_submissions panel + G2 guardrail rewrite + upload modal improvements

feat(postprocess): strip ACL review line numbers from Docling structured output

feat: add desk-rejection guardrails + home page CTA polish

feat: add 5-step submission tracker with live polling to my_submissions page

refactor: remove Resend email service — login required, no email needed

fix: use uvicorn logger for terminal output instead of stderr/print

fix: catch-all wrapper for BackgroundTasks crash + stderr logging

fix: write pipeline logs to stderr so they appear in uvicorn worker terminal on Windows

feat: implement multi-agent LangGraph reviewer (4-gate deep review pipeline)

fix: restore /app/ mount, add / redirect to home.html

fix: serve frontend at / instead of /app/ for cleaner URLs

Merge remote-tracking branch 'origin/ntp' into phuc-dev

feat(auth+db): session-aware nav, ownership fix, admin hardening, schema cleanup

feat: persist ParsedPaper to data/jobs/<key>_parsed.json for debugging

feat: structured PDF parsing with ParsedPaper schema (Priority 2)

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feat(backend): Supabase-backed storage, observability, and DB bug fixes

feat: add per-job file logging, Docling fallback provider, paper title extraction

feat: rebrand to PaperMate, ARR review rubric, feedback form, UI improvements

Initial implementation of AI research paper review system