feat(blocks): add Localized type support to full-guide blocks

Widens prose props on FleetDiagram, HandoffTable, PhasePanel, RouteTable, SkillPackage, and WorktreeMap to accept {en, pt} as well as string, and conditionally renders language spans. Non-prose props (id, code, etc) were left as strings.

src/components/blocks/SkillPackage.astro

@@ -7,12 +7,14 @@
 // paired with a `<article>` detail panel by the parent page; this component
 // renders only the picker.
 
+type Localized = { en: string; pt: string };
+
 interface PackageFile {
   id: 'skill' | 'references' | 'scripts' | 'assets' | string;
   /** Path rendered inside `<code>`, e.g. "SKILL.md". */
   path: string;
   /** Helper copy under the path. */
-  small: string;
+  small: string | Localized;
 }
 
 interface Props {
@@ -34,7 +36,18 @@ const { files, initial = files[0]?.id ?? 'skill' } = Astro.props;
         aria-selected={file.id === initial}
       >
         <code>{file.path}</code>
-        <small>{file.small}</small>
+        <small>
+          {typeof file.small === 'string' ? (
+            file.small
+          ) : (
+            <>
+              <span data-language-content="en">{file.small.en}</span>
+              <span data-language-content="pt" hidden>
+                {file.small.pt}
+              </span>
+            </>
+          )}
+        </small>
       </button>
     ))
   }