Adds an authenticated upload flow to the buyer web app: an operator
uploads a PDF, the server extracts + paragraph-aligned-chunks it
(~2.2k tokens), then runs a hierarchical map-reduce summarization by
paying marketplace suppliers per chunk — one on-chain escrow per map
call and per reduce node. One book upload fans out into dozens of real
mainnet escrows (the intended marketplace traffic) while producing a
genuine full-book summary.
Server module (buyer/src/pdf/): PDF extraction (text-only, rejects
scanned), token-aware chunker, supplier discovery/round-robin filtered
to capable models (kimi/deepseek/gpt; excludes qwen2.5:0.5b), pre-spend
cost estimate + wallet-floor guard, and a JobStore orchestrator that
reuses submitPrompt → findSubmittedEscrowRef → runAccept per call.
v1 serializes PostEscrow under a mutex (the shared tx builder can't pin
wallet inputs, so parallel escrows would double-spend); retries failed
calls on a different supplier then continues with gaps. 6 /v1/pdf-*
routes (multipart upload, estimate, confirm-gated start, SSE progress,
result, .md download) behind the existing session auth + page/chunk/
balance caps. SPA adds a 4-step BookSummarizer wizard.
Tests: chunk/estimate/supplier-pool/extract unit tests + orchestrator
(happy/gap/failover) + routes integration. Full buyer suite green
(181 tests); SPA build + typecheck clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
