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-mcp/Cargo.toml

@@ -19,6 +19,9 @@ ledger-store = { path = "../ledger-store" }
 ledger-import = { path = "../ledger-import" }
 ledger-config = { path = "../ledger-config" }
 ledger-vault = { path = "../ledger-vault" }
+# The CPA package, the 1099 worksheet, and the reports they share with
+# the viewer.
+ledger-package = { path = "../ledger-package" }
 base64 = "0.22"
 # A download's Repr-Digest (local.rs).
 sha2 = "0.10"
@@ -37,7 +40,6 @@ tokio = { version = "1", features = ["rt-multi-thread", "macros", "io-util", "io
 tokio-util = { version = "0.7", features = ["rt", "io", "io-util"] }
 # A call that panics is recorded before the panic goes on (access.rs).
 futures-util = "0.3"
-zip = "9.0.1"
 toml = "1"
 # The vault's TINs, decoded for the filing scan (tin_files.rs), are wiped
 # from memory when dropped, as the vault's own are.
@@ -52,6 +54,8 @@ libc = "0.2"
 workspace = true
 
 [dev-dependencies]
+# The tests open the CPA package.
+zip = "9.0.1"
 tokio = { version = "1", features = ["time", "macros", "rt-multi-thread"] }
 rmcp = { version = "3", features = ["client", "transport-streamable-http-client-reqwest"] }
 jsonschema = { version = "0.58", default-features = false }