refactor(reader): extract.rs moves into ledger-reader (U0d)

D-61 (Q-9): the writer sheds the typesetter and the crate map is layered
again. The PDF/XLSX reader (extract.rs, plan P6) is now the plain library
crate ledger-reader, moved whole with git mv and no behavior change.
ledger-store depends on it instead of ledger-import, so the store no
longer builds Typst or the fonts; ledger-import re-exports it as
ledger_import::extract so gui, mcp, host and the fuzz targets compile
unchanged, and still never depends on the store. New crate carries only
the dependencies extract.rs imports (hayro, hayro-interpret, kurbo, zip,
quick-xml, thiserror); fuzz/Cargo.lock gains the new package.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HS8WZziDnyxunC23MUxrLp

crates/ledger-import/Cargo.toml

@@ -18,17 +18,8 @@ typst = "0.15.1"
 serde_json = "1"
 typst-layout = "0.15.1"
 qrcode = { version = "0.14.1", default-features = false, features = ["svg"] }
-# Extraction (extract.rs, plan P6): a PDF's text, a page's pixels, an
-# XLSX's cells. hayro (the renderer) and hayro-interpret (the text
-# interpreter) are pure Rust and already the viewer's PDF reader, so the
-# server and the viewer read a receipt through one implementation rather
-# than two; `zip` and `quick-xml` read a spreadsheet's XML. None of them
-# touches money: a number is kept as the decimal string the XML holds.
-hayro = { version = "0.8", features = ["embed-fonts"] }
-hayro-interpret = "0.8"
-kurbo = "0.13"
-zip = { version = "9.0.1", default-features = false, features = ["deflate"] }
-quick-xml = "0.38"
+# The reader (extract.rs moved out: D-61); re-exported as `extract`.
+ledger-reader = { path = "../ledger-reader" }
 # BSD-3-Clause: the IIF's transliteration to ASCII (iif.rs, rules.md B-34).
 # Pinned exactly: a new table would change what a CPA's file says.
 deunicode = { version = "=1.6.0", default-features = false }
@@ -38,4 +29,5 @@ workspace = true
 
 [dev-dependencies]
 proptest = "1"
+zip = { version = "9.0.1", default-features = false, features = ["deflate"] }
 rqrr = { version = "0.11.0", default-features = false }