fix: randomize quotes, remove CMS idle quote, fix postgres image tag

- Remove hardcoded Dennis Konkol idle quote from rotation
- Double quote pool (5 → 12 quotes per locale)
- Start at a random quote on page load
- Cycle to a random non-repeating quote every 10s instead of sequential
- Fix dev-deploy.yml: postgres:15-alpine → postgres:16-alpine

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/components/About.tsx

@@ -126,7 +126,7 @@ const About = () => {
               <h3 className="text-lg sm:text-xl font-black mb-6 sm:mb-8 md:mb-10 flex items-center gap-2 uppercase tracking-widest text-liquid-mint">
                 <Activity size={20} /> Status
               </h3>
-              <ActivityFeed idleQuote={cmsMessages["about.quote.idle"]} locale={locale} />
+              <ActivityFeed locale={locale} />
             </div>
             <div className="absolute top-0 right-0 w-40 h-40 bg-liquid-mint/10 blur-[100px] rounded-full" />
           </motion.div>