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/WorktreeMap.astro

@@ -6,15 +6,17 @@
 // the `data-tree` hook asserted by `scripts/verify.mjs`. The `root` node and
 // the `initial` branch are marked selected.
 
+type Localized = { en: string; pt: string };
+
 interface Branch {
   /** The `data-tree` hook, e.g. "ui", "tests", "docs". */
   id: string;
   /** Uppercase label, e.g. "UI AGENT". */
-  label: string;
+  label: string | Localized;
   /** Strong line, e.g. "agent/ui". */
   strong: string;
   /** Status small, e.g. "3 files · working". */
-  small: string;
+  small: string | Localized;
   /** CSS modifier so each branch picks up its tone. */
   tone: 'ui' | 'tests' | 'docs' | string;
 }
@@ -50,9 +52,31 @@ const { branches, initial = 'main' } = Astro.props;
         aria-selected={branch.id === initial}
       >
         <>
-          <span>{branch.label}</span>
+          <span>
+            {typeof branch.label === 'string' ? (
+              branch.label
+            ) : (
+              <>
+                <span data-language-content="en">{branch.label.en}</span>
+                <span data-language-content="pt" hidden>
+                  {branch.label.pt}
+                </span>
+              </>
+            )}
+          </span>
           <strong>{branch.strong}</strong>
-          <small>{branch.small}</small>
+          <small>
+            {typeof branch.small === 'string' ? (
+              branch.small
+            ) : (
+              <>
+                <span data-language-content="en">{branch.small.en}</span>
+                <span data-language-content="pt" hidden>
+                  {branch.small.pt}
+                </span>
+              </>
+            )}
+          </small>
         </>
       </button>
     ))