Crate rightkit_pdf 

RightKit PDF engine: the pure, Tauri-free half of the PDF edit pipeline, extracted from ViewRight’s crates/pdf (the most mature donor), plus ScrapeRight text extraction and Legion page merge as opt-in features.

Every function takes bytes, paths, or in-memory lopdf::Documents and returns typed values. Path authorization (the host’s file broker) stays in the app; commit provides the atomic disk write once the host has authorized a target.

module	responsibility
model	wire types: commands, islands, locators, typed PdfEditError
inspect	page graph walk: text islands with quads, fonts, source locators
font	bundled + system font catalog, subsetting, ToUnicode
compose	sparse-write composition of edit commands onto fresh bytes
save	candidate verification, single-use save tokens, commit resolution
commit	(feature edit) atomic on-disk write for a resolved save token
merge	(feature merge) merge PDFs, select/reorder pages
extract	(feature extract) text extraction, whole-document and per page

Modules

commit

Atomic on-disk commit for a staged save token.

compose

PDF editor sparse composition (Dispatch C, lane C1).

font

PDF editor font system (Dispatch B, lane B2): catalog discovery, embedding/subsetting permission checks, glyph subsetting, & Type0/CID/ToUnicode assembly — docs/PDF-EDITOR-NOW.md §7.

inspect

Authoritative PDF source graph extraction (Dispatch B, lane B1).

merge

Page-level assembly: merge several PDFs into one and select/reorder pages.

model

Shared PDF-editor wire/model types (Dispatch A, lane A1).

save

PDF editor save protocol (Dispatch C, lane C2): prepare_pdf_save’s structural recheck, save-token lifecycle, and commit_pdf_save’s atomic write — docs/PDF-EDITOR-NOW.md §10.