docs: changelog for the doctor fixes + version-sync note

Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>

CHANGELOG.md

@@ -1,7 +1,8 @@
 # Changelog
 
 All notable changes to `chain_studio` recorded here. Pubspec
-version + `kStudioVersion` in `lib/main.dart` stay in lockstep.
+version + `kStudioVersion` in `lib/data/about_info.dart` stay in
+lockstep.
 
 ## Unreleased
 
@@ -33,6 +34,11 @@ version + `kStudioVersion` in `lib/main.dart` stay in lockstep.
   trash icon into a labeled overflow menu.
 - **Doctor page.** Copy button on every daemon path row; "n of m
   events verified" instead of "n/m chain"; hash-chain wording unified.
+  The module tile no longer counts the built-in `system`
+  pseudo-module (a fresh hub shows 0 modules, matching the welcome
+  checklist); the daemon-files panel warns when the audit DB lives in
+  an OS-cleanable temp directory; the daemon card states endpoint,
+  transport security, and token status (length only) in one line.
 - **Federation page.** Primary action in the app bar and in the empty
   state (FAB removed); plain-language empty text.
 - **Store.** License pill on the module card; maturity pills explain