P2 slice 6: the viewer

`wanderbooks gui [BOOK]` finds the data root, reads settings from the
journal, the vault of the book, presence through ops/, Save a copy /
Open on every document, Save the W-9, the Export menu, and colour
schemes. One builder for the CPA package and the 1099 worksheet
(ledger-package), shared by the server and the viewer.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01T3gXMVt7XJPi6ens1or9Dj

crates/ledger-package/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "ledger-package"
+version = "0.1.0"
+edition.workspace = true
+license.workspace = true
+repository.workspace = true
+description = "wanderbooks' CPA handoff package and the reports and worksheets it shares with the server: built from the books read-only, by the server or the viewer."
+
+[dependencies]
+ledger-core = { path = "../ledger-core" }
+ledger-store = { path = "../ledger-store" }
+ledger-import = { path = "../ledger-import" }
+ledger-vault = { path = "../ledger-vault" }
+chrono = "0.4"
+rust_decimal = "1"
+zip = "9.0.1"
+
+[lints]
+workspace = true
+
+[dev-dependencies]
+tempfile = "3"