fix(pipeline): stop abandoning slow NCBI BLAST jobs + EBI fallback

fix(blast): handle NCBI server overload gracefully

fix: harden BLAST pipeline against NCBI timeouts and server overload

fix: increase BLAST timeout from 5min to 10min for long proteins

fix: NCBI_API_KEY not loading - blast.py read os.environ before dotenv

fix: remove NCBI rate limiting, retry only on connection errors

fix: BLAST reliability - API key, exponential backoff, retry, error tracking

fix: strip NCBI QBlastInfo preamble before XML parsing

fix: handle NCBI UNKNOWN status and add pathway_enrichment to frontend status order

fix: E-value underflow, AlphaFold step, steps_completed append, UniProt always runs

Deploy prep: Render config + Dockerfile, refactored backend auth flow, dashboard, landing page, error states, guest flow