chore: update to sappcode @ be1decc

Updated to sappcode @ 8638e5b

CURRENT_STATE: refresh to 2026-05-25

Add sappbackup plugin scaffold

Add jobs stats to /health; document parse_mode fast vs quality tradeoff

Self-keepalive while jobs are in flight to prevent autosleep mid-parse

Add job-style /parse/jobs API: submit-and-poll, durable across restarts

Stream /parse as NDJSON: heartbeat every 5s, terminal result event last

Pass llm_service as dotted-string path, not as ClaudeService instance

Fix quality mode 500: pass ClaudeService instance to PdfConverter

Redirect ~/.cache to the bucket so datalab models persist

Fix PermissionError on first /parse: chown marker's static dir to app user

Sync _project docs to deployed reality

Switch persistence to HF Bucket trenchlesspm-cache mounted at /data

Point docs at the actual Space (hirokamitai/trenchlesspm)

Scaffold marker: FastAPI wrapper around marker-pdf for HF Space

Initial project scaffold from sappcode template