Add inline level editing in admin queue and roadmap infographic on start page

- Admin: Level column is now a dropdown of the 8 premium levels (Scintilla
  through Corona), saving immediately via PATCH; server validates levels.
- Start page: RM Circle Team Build Roadmap graphic above the fold with
  Crypto Team Build Network attribution (compressed to 198KB WebP).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.gitignore

@@ -2,3 +2,4 @@ node_modules/
 data/
 .env
 .claude/
+*.code-workspace