feat(history): mode-tagged history + top-of-chain journaling (#30)

Record the submission mode per history entry so advanced commands are
reusable in simple mode, and fix the bug where a ':'-one-shot command
lost its ':' across sessions (ADR-0052, closing #30).

Format: the history.log status token gains an optional ':adv' suffix
(ok / ok:adv / err / err:adv); 'source' stays last and canonical, so
replay is unaffected. The in-memory ring (still Vec<String>) stores
advanced entries ': '-prefixed; recall strips the ':' in advanced mode
and keeps it in simple; hydration reconstructs the prefix from the tag.

Journaling moved from the worker to the dispatch layer (spawn_dsl_-
dispatch / run_replay / app-command sites), where the mode is in scope
with no worker plumbing; finalize_persistence writes only yaml/csv
(commit-db-last still atomic for state). The journal write is now
best-effort (command already committed), consistent with the failure
path. App commands journal simple, so they recall bare. Journaling is
now uniform (every successful command, per ADR-0034) — closing a gap
where show tables/relationships/explain didn't journal.

Amends ADR-0034 (status tag + journaling location), ADR-0015 §6
(history.log out of the worker tx), ADR-0040 (journal-write best-effort).
15 worker-level journaling tests retired, re-covered at the new layer
(history.rs format, app.rs recall matrix, iteration6 cross-session
regression, replay). 2471 pass / 0 fail / 0 skip, clippy clean.

tests/it/sql_select.rs

@@ -732,23 +732,3 @@ fn database_run_select_recovers_all_ten_playground_types() {
         );
     }
 }
-
-#[test]
-fn database_run_select_appends_to_history_when_source_present() {
-    let (project, db, _dir) = open_project_db();
-    let history_path = project.path().join("history.log");
-    // ADR-0030 §11: the literal submitted line lands in
-    // history.log so replay re-runs it.
-    let _ = rt()
-        .block_on(db.run_select(
-            "select 1".to_string(),
-            Some("select 1".to_string()),
-        ))
-        .expect("SELECT runs");
-    let body = std::fs::read_to_string(&history_path)
-        .expect("history.log present after a SELECT");
-    assert!(
-        body.contains("select 1"),
-        "history.log records the literal SELECT line: {body:?}",
-    );
-}