Default 'no subtitles' mode: cleaner reels without text issues

User feedback: subtitles have been causing problems (wrong text from STT,
chorus selection issues). Better to default to clean reels without
burned-in subtitles - just video + audio at the chorus moment.

Changes:
- 'Brez podnapisov' checkbox now CHECKED by default
- Removed 'Stil podnapisov' dropdown from UI (kept hidden for compat)
- Updated step label: 'Reframe v 9:16 + podnapisi' → 'Reframe v 9:16'
- Backend already supports --no-subs flag, no logic changes needed

Result: reels are simpler and more reliable. Just clean 9:16 with audio.
User can enable subtitles per-job by unchecking the box if needed.

templates/index.html

@@ -388,14 +388,6 @@
       </div>
 
       <div class="row">
-        <div>
-          <label>Stil podnapisov</label>
-          <select id="subtitle-style">
-            <option value="reels">Reels (TikTok beli)</option>
-            <option value="yellow">Yellow (MrBeast)</option>
-            <option value="minimal">Minimal</option>
-          </select>
-        </div>
         <div>
           <label>Kvaliteta</label>
           <select id="quality">
@@ -404,22 +396,24 @@
             <option value="high">High (arhiv)</option>
           </select>
         </div>
-      </div>
-
-      <div class="row" style="margin-top: 12px;">
         <div>
-          <label>AI za analizo (popravlja transkript + razume strukturo)</label>
+          <label>AI za analizo (izbere refren)</label>
           <select id="llm-provider">
             <option value="claude" selected>Claude Sonnet 4.6 (priporočeno)</option>
             <option value="gemini">Gemini 3.1 Pro (multilingual)</option>
-            <option value="auto">Auto (Claude → Gemini fallback)</option>
+            <option value="auto">Auto</option>
           </select>
         </div>
       </div>
 
+      <!-- Skriti subtitle-style za backward compat -->
+      <select id="subtitle-style" style="display:none">
+        <option value="reels" selected>Reels</option>
+      </select>
+
       <label class="toggle" style="margin-top: 12px;">
-        <input type="checkbox" id="no-subs">
-        Brez podnapisov
+        <input type="checkbox" id="no-subs" checked>
+        Brez podnapisov (privzeto — bolj zanesljivo)
       </label>
 
       <button id="submit-btn" class="full-width" style="margin-top: 20px; width: 100%;">
@@ -706,7 +700,7 @@
       "V vrsti za YouTube prenos": { pct: 30, friendly: "V vrsti za YouTube prenos" },
       "YouTube download": { pct: 45, friendly: "Prenašam z YouTube..." },
       "Iščem refren (Whisper + energy)": { pct: 60, friendly: "Iščem refren v pesmi..." },
-      "Reframe + subtitles": { pct: 75, friendly: "Reframe v 9:16 + podnapisi..." },
+      "Reframe + subtitles": { pct: 75, friendly: "Reframe v 9:16..." },
       "Končano": { pct: 100, friendly: "✅ Končano" },
     };