{"content":"fix: make back button return to welcome page from first navigation\n\nThe welcome page was never added to the navigation history, so after the first navigation goBack() hit its 'historyIndex <= 0' guard and did nothing — the user could never return to the welcome page via the back button.\n\nFix: seed the welcome page as the history origin (empty URI, which resolveUri already renders as welcome) when the app initializes without an initial URI or runtime defaultUri. Deep-link (?uri=) and defaultUri entry points skip the seed, preserving their existing semantics. Updated 3 history assertions, added a dedicated back-to-welcome test. All 160 UI tests pass.","contentType":"text/plain;utf-8","attachments":[],"quotePin":""}