feat(tui): persist model tier selection and fix formatting

Persist /model tier choice to ~/.local/share/flynn/preferences.json so
it survives restarts. Decode HTML entities (e.g. ') in markdown
renderer output. Suppress noisy logger.info and punycode deprecation
warnings in TUI startup.

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

src/daemon/index.ts

@@ -97,6 +97,15 @@ export async function startDaemon(config: Config): Promise<DaemonContext> {
     model: config.audio.transcription_model,
   };
   const modelRouter = createModelRouter(config);
+
+  // Restore persisted model tier
+  const { loadPreferences, savePreference } = await import('../preferences.js');
+  const prefs = loadPreferences(dataDir);
+  if (prefs.modelTier) {
+    modelRouter.setTier(prefs.modelTier as import('../models/router.js').ModelTier);
+  }
+  modelRouter.setOnTierChange((tier) => savePreference(dataDir, 'modelTier', tier));
+
   const systemPrompt = loadSystemPrompt(config, skillRegistry);
 
   // ── Gateway & Channels ──