docs(cli,ledger): #168 cycle-close audit — reconcile the --trace surfaces (closes #168)

The #168 refusal left sibling --trace surfaces still lying and the design ledger
still describing CLI --trace as a live persist path (surfaced by the cycle-close
architect drift review). Reconcile them to record reality:

- the chart NotFound hint no longer points at `aura run --trace` (itself refused);
  it names the live trace-writer (a campaign document's persist_taps presentation).
- RunCmd/McCmd --trace help stop promising persistence (both flags already refuse).
- README drops --trace from the live naming flags.
- the ledger records the CLI --trace retirement: per-member --trace was never
  wired to the blueprint sweep (`let _ = persist`) and was silently dropped at
  #159/#220 — it never migrated as the old HISTORY note claimed; the single live
  TraceStore::write is the campaign persist_taps; restoration is deferred to #224.

Workspace suite green (62 groups / 0 failed), clippy -D warnings clean.

closes #168

README.md

@@ -68,7 +68,7 @@ don't want to vary with a single-value axis (`--axis name=4`). Omitting one is a
 clean error naming the missing knob, not a silent default.
 
 Use `aura <cmd> --help` for the full data-window (`--real`/`--from`/`--to`),
-naming (`--name`/`--trace`), and selection (`--select`) flags.
+naming (`--name`), and selection (`--select`) flags.
 
 ## Authoring & introspecting topology