feat(gtm): v2.5 - Hard Fact Extraction & UI

- Backend: Implemented secondary extraction phase for structured specs (JSON schema).

- Backend: Added strict normalization rules (min, cm, kg).

- Frontend: Added 'Phase1Data' interface update for specs.

- Frontend: Implemented new UI component for 'Technical Specifications' in Phase 1.

- Frontend: Updated header and sidebar to display 'v2.5' build marker.

- Docs: Updated architectural documentation.

gtm-architect/components/Layout.tsx

@@ -78,7 +78,7 @@ export const Layout: React.FC<LayoutProps> = ({
           <div>
             <h1 className="text-xl font-bold font-mono tracking-tighter flex items-center gap-2 text-slate-900 dark:text-white">
               <div className="w-3 h-3 bg-robo-500 dark:bg-robo-accent rounded-full animate-pulse"></div>
-              ROBOPLANET
+              ROBOPLANET v2.5
             </h1>
             <p className="text-xs mt-1 uppercase tracking-widest text-slate-500 dark:text-robo-400">GTM Architect Engine</p>
           </div>