Rebrand to Plebeian Signer with updated colors and UI improvements

- Fix project name from "Plebian" to "Plebeian" throughout codebase
- Replace gooti logo with Plebeian Market logo across all screens
- Update color scheme to match Plebeian Market (pink accent #ff3eb5)
- Add IBM Plex Mono fonts and Reglisse heading font
- Center vault create/import screen content vertically
- Reduce spacing on sync preference screen to prevent scrolling
- Add Enter key support on vault login password field
- Update options page with new logo and color scheme
- Bump version to 0.0.5

Files modified:
- package.json (version bump, name fix)
- projects/*/public/{logo.svg,options.html,manifest.json}
- projects/*/src/app/components/vault-*/*.{html,scss}
- projects/*/src/app/components/welcome/*.html
- projects/common/src/lib/styles/*.scss
- Various component files for branding updates

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

projects/common/src/lib/components/nav-item/nav-item.component.scss

@@ -5,19 +5,23 @@
   display: flex;
   flex-direction: row;
   align-items: center;
-  padding-left: 16px;
-  padding-right: 8px;
+  padding-left: var(--size);
+  padding-right: var(--size-h);
   background: var(--background-light);
-  border-radius: 8px;
-  margin-bottom: 8px;
+  border-radius: var(--radius-lg);
+  margin-bottom: var(--size-h);
+  border: 1px solid var(--border);
+  transition: background-color 0.2s ease, border-color 0.2s ease;
 
   &:hover {
     background: var(--background-light-hover);
+    border-color: var(--primary);
   }
 
   .text {
     overflow-x: hidden;
     text-overflow: ellipsis;
     white-space: nowrap;
+    color: var(--foreground);
   }
 }