feat: ledger-gui — a read-only, live desktop view of the books

egui/wgpu app for owners and their accountant: Overview, Cash, Profit,
Transactions (with rendered receipts and journal history), Reports
(statements with interval columns, comparisons, drill-down), Accounts,
Documents, Company, Journal; Ctrl+K palette; back/forward; light/dark.
Follows the journal live (~30 ms from write to screen). --demo opens a
deterministic demo company, also used for screenshot tests.

Engine: ledger-store Snapshot (read-only, incremental, tolerant of a
half-written tail); ledger-core analysis (intervals, balance series,
P&L by interval, cash flows); ledger-config extracted from ledger-mcp
with the full company profile and cash_accounts.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MtYEaR6M6Ybdhm6X98BWNu

crates/ledger-mcp/src/server.rs

@@ -1,10 +1,10 @@
 //! The MCP server: narrow typed tools over the store, with the receipt
 //! policy enforced server-side.
 
-use crate::company::Company;
 use crate::policy::ReceiptPolicy;
 use crate::types::*;
 use chrono::NaiveDate;
+use ledger_config::Company;
 use ledger_core::{
     AccountId, AccountType, AssetStatus, Currency, DocumentLine, DocumentStatus, JournalEntry,
     Ledger, Money, NewAsset, PeriodStatus, Side, accumulated_depreciation, book_value,