Digest systemPrompt gains a page-cite instruction and PromptVersion is 3.
Add the sift_pdf_* metric series (extract_total{outcome}, extract_seconds,
pages_total, pool_wait_seconds, cache_hits_total) to internal/metrics and wire
ObservePDF/ObservePDFWait/PDFCacheHit into internal/api/pdf.go. Refactor
cmd/sift/fetchcmd.go to a fetchOpts struct with parseFetchOpts and fetchBody,
adding --pages/--grep. Update skill/SKILL.md, set nix MemoryMax to 1G, and add a
PDF documents section to the README.
Co-Authored-By: ornith-1.5-35b-a3b <ornith-1.5-35b-a3b@llama.cpp.invalid>
Answer extracted PDFs from the document cache: fresh for PDFTTL, then a
conditional GET (304 reuses the stored text, a 200 is extracted and stored
without a second GET). Store after extraction with the response hash, ETag,
fetch time and extracted pages. Route pages/grep through pdfdoc.Options with
400s for bad ranges and non-PDFs, and refuse a question when the document
exceeds PDFMaxQuestionChunks with a pointer to grep and pages.
Co-Authored-By: ornith-1.5-35b-a3b <ornith-1.5-35b-a3b@llama.cpp.invalid>
Route "pdf" through clean.Kind in doFetch/cleanFetched: extract under the pool
(keyed by caller class + document hash, one per caller), map the five pdftext
errors plus a pool panic to 422, ErrBusy to 503+Retry-After 10, ErrCallerBusy to
429, and answer with the whole text or the map. Adds RetryAfter to fetch.Error
and the matching header. No cache, pages or grep — those are task 07.
Co-Authored-By: ornith-1.5-35b-a3b <ornith-1.5-35b-a3b@llama.cpp.invalid>
kyleandornith-1.5-35b-a3b