Tests and docs: no figures from the first company's books

The odd-cent regression's net loss and its splits, the website's example
Apple charge and the GUI plan's example receipt now use made-up amounts.

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

plan/gui.md

@@ -37,7 +37,7 @@ journal with its verification status.
    hash-chained journal and the blob store and builds its own in-memory
    view (`ledger_store::Snapshot`). Changes happen through the agent (MCP).
    Where the GUI finds something to fix, it offers a ready-to-paste prompt
-   for the agent ("Attach the receipt for entry 12 — Anthropic, $5.82").
+   for the agent ("Attach the receipt for entry 12 — Anthropic, $7.40").
 5. **Live.** It follows the journal: a change made by the agent appears
    within a second, highlighted as new.
 6. **Numbers are typography.** Tabular figures everywhere (Inter with