Plugin

A dsh-better-sidebar reader for CSV/TSV/PSV files and xlsx/xlsm workbooks: a sortable, filterable table with sheet tabs. Ceilings on rows, columns and cells, plus two zip-container gates, keep an input from freezing the tab.

Turns attached files into versioned evidence: `search_documents` builds a private local index (SQLite FTS5 after a startup capability probe, dependency-free JS fallback otherwise) and returns compact evidence blocks carrying an exact coordinate — PDF page, PPTX slide, text/DOCX line range, or quoted XLSX `Sheet!Range` — which `read_document` expands only while the content version still matches. Contiguous CJK runs are indexed as overlapping bigrams and queried as phrases, so word order is preserved; uploaded raster images take the native vision attachment path instead.

DSH web plugin: open .docx/.xlsx/.pptx in the better-sidebar editor through a self-hosted ONLYOFFICE Document Server (JWT-signed config, in-network document/callback routes, save-back to disk).

Read-only Excel analysis toolkit for dsh (DeepSeek Harness). Streaming xlsx reader (yauzl + sax), describe / filter / pivot tools, big-file safe.