P1: the books keep how they are kept

Settings, conventions (posting templates, approval rules, policies,
close steps, calendar, mappings, notes), decisions, open items and
entry approvals are journal events (journal format 2). Books that keep
their settings never read wanderbooks.toml or config.json; the server
and the viewer take the vault key from --vault-key-file instead.
books.import_settings moves a settings file in once, exactly as the
server reads it. Approval rules, when enforced, gate every posting
path. Replay refuses what it can't read as newer, never as corrupt.

Lean: a record changes no figure. Mutation on the whole diff: every
survivor killed by a test but two equivalent (docs/testing.md). The
Company page says a late open item is overdue in words, not colour
alone.

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

crates/ledger-cli/tests/init.rs

@@ -418,3 +418,41 @@ fn the_toml_shows_every_setting_the_config_reads() {
         assert!(has(sect, key), "[{sect}] {key} is in the template");
     }
 }
+
+/// Moving the scaffolded settings file, and every example in it, into
+/// books: each imports, reads as the file does (the import refuses
+/// otherwise), and exporting it back and importing the export changes
+/// nothing (plan/served.md P1: toml_round_trip_zero_events).
+#[test]
+fn the_toml_and_its_examples_import_and_round_trip() {
+    use ledger_core::settings::{Settings, Source};
+    let tmp = tempfile::tempdir().unwrap();
+    let (_, text) = scaffolded_toml(tmp.path());
+    let single_owner = |ex: &str| ex.starts_with("close_into ");
+    let source = Source {
+        decided_by: "onboarding".into(),
+        decided_on: chrono_date(),
+        citation: None,
+        note: None,
+    };
+    for file in [
+        text.clone(),
+        uncomment(&text, |ex| !single_owner(ex)),
+        uncomment(&text, single_owner),
+    ] {
+        let import = ledger_config::codec::import(&file, None, &Settings::default(), "USD")
+            .unwrap_or_else(|e| panic!("imports: {e}\n{file}"));
+        assert!(import.unknown.is_empty(), "{:?}", import.unknown);
+        let mut books = Settings::default();
+        let changes = books.check_changes(&import.changes, &source).unwrap();
+        books.apply(&changes, &source, 1).unwrap();
+        let export = ledger_config::codec::export(&books, "USD");
+        let again = ledger_config::codec::import(&export, None, &books, "USD")
+            .unwrap_or_else(|e| panic!("the export imports: {e}\n{export}"));
+        assert!(again.changes.is_empty(), "{:?}\n{export}", again.changes);
+    }
+}
+
+fn chrono_date() -> chrono::NaiveDate {
+    chrono::NaiveDate::from_ymd_opt(2026, 10, 17).unwrap()
+}