Build Verse: a poem-quote app on the agent-native chat template

Adds a Postgres-backed quotes domain (poems/quotes/favorites) exposed as
five agent-native actions (list-quotes, get-random-quote, create-quote,
toggle-favorite, list-favorites) callable from both chat and the React UI
via useActionQuery/useActionMutation. Moves the primary UI from chat to a
mobile-first Quotes/Favorites experience (chat moves to /chat), adds
manual OpenTelemetry instrumentation exporting traces/metrics/logs over
OTLP, and wires a local Docker Postgres for shared state.

app/components/layout/Header.tsx

@@ -10,7 +10,9 @@ import { useLocation } from "react-router";
 import { APP_TITLE } from "@/lib/app-config";
 
 const pageTitleKeys: Record<string, string> = {
-  "/": "navigation.chat",
+  "/": "navigation.quotes",
+  "/favorites": "navigation.favorites",
+  "/chat": "navigation.chat",
   "/observability": "navigation.observability",
   "/agent": "settings.agentTitle",
   "/settings": "navigation.settings",