Revert "feat: 지서버 모델을 드롭다운으로 선택 + think:false가 조용히 뒤집히지 않게"

This reverts commit 86063d3ef5.

web-ui/html/index.html

@@ -1092,12 +1092,9 @@
             <div class="right-section-title" style="margin-bottom:8px">Ollama (지서버/로컬) 연결</div>
             <label style="display:block;font-size:12px;color:var(--muted);margin-bottom:6px">엔드포인트</label>
             <input id="settings-ollamalocal-endpoint" type="text" placeholder="http://192.168.0.7:11434" style="width:100%;border:1px solid var(--line);border-radius:10px;padding:8px;font-size:12px;font-family:'IBM Plex Mono',monospace" />
-            <label style="display:block;font-size:12px;color:var(--muted);margin:10px 0 6px">활성 모델</label>
-            <select id="settings-ollamalocal-model" class="settings-input" style="font-size:13px">
-              <option value="">— 새로고침하여 로드 —</option>
-            </select>
+            <label style="display:block;font-size:12px;color:var(--muted);margin:10px 0 6px">모델 이름</label>
+            <input id="settings-ollamalocal-model" type="text" placeholder="e.g. gemma4:26b" style="width:100%;border:1px solid var(--line);border-radius:10px;padding:8px;font-size:12px;font-family:'IBM Plex Mono',monospace" />
             <div style="display:flex;gap:8px;margin-top:8px">
-              <button class="btn btn-sm" onclick="refreshProviderModels()" style="background:#fff;border:1px solid var(--line);color:var(--text)">모델 새로고침</button>
               <button class="btn btn-sm" onclick="testProviderConnection()" style="background:#fff;border:1px solid var(--line);color:var(--text)">연결 테스트</button>
             </div>
             <div id="provider-status-msg-ollamalocal" style="font-size:11px;color:var(--muted);margin-top:6px"></div>