Update app.py

1. Model default diganti:
❌ Qwen/Qwen2.5-3B-Instruct (kemungkinan butuh PRO)
✅ Qwen/Qwen2.5-1.5B-Instruct (lebih kecil, pasti gratis)

2. Error sekarang menampilkan DETAIL asli:
❌ dulu: "Gagal menghubungi API. Coba lagi nanti."
✅ sekarang: "Error dari API: 401: Invalid token..."
atau "404: Model not found..."
atau error lainnya yang jelas

3. Di pesan error juga dikasih saran model alternatif

app.py

@@ -23,11 +23,13 @@ import os
 # ══════════════════════════════════════════════════════
 #  KONFIGURASI MODEL
 # ══════════════════════════════════════════════════════
-
-MODEL_NAME = "Qwen/Qwen2.5-3B-Instruct"
-# MODEL_NAME = "Qwen/Qwen2.5-1.5B-Instruct"
-# MODEL_NAME = "meta-llama/Llama-3.2-1B-Instruct"
-# MODEL_NAME = "google/gemma-2-2b-it"
+# Ganti model di sini kalau ada yang error.
+# Model-model ini biasanya tersedia gratis:
+MODEL_NAME = "Qwen/Qwen2.5-1.5B-Instruct"
+# MODEL_NAME = "Qwen/Qwen2.5-0.5B-Instruct"        # Paling kecil, paling pasti gratis
+# MODEL_NAME = "google/gemma-2-2b-it"               # Alternatif
+# MODEL_NAME = "mistralai/Mistral-7B-Instruct-v0.3" # Alternatif
+# MODEL_NAME = "HuggingFaceH4/zephyr-7b-beta"       # Alternatif
 
 HF_TOKEN = os.environ.get("HF_TOKEN", "")
 CHAT_API = f"https://api-inference.huggingface.co/models/{MODEL_NAME}/v1/chat/completions"
@@ -99,6 +101,7 @@ def call_api(messages):
     }
     params = {"max_tokens": 1000, "temperature": 0.85, "top_p": 0.9}
 
+    # ── Attempt 1: Chat Completions API ──
     try:
         resp = requests.post(
             CHAT_API, headers=headers,
@@ -111,11 +114,15 @@ def call_api(messages):
             return "LOADING"
         if resp.status_code == 429:
             return "RATE_LIMIT"
+        # Error lainnya — simpan info buat debugging
+        return f"CHAT_ERROR_{resp.status_code}:{resp.text[:300]}"
     except requests.exceptions.Timeout:
         return "TIMEOUT"
-    except Exception:
-        pass
+    except Exception as e:
+        return f"CHAT_EXCEPTION:{str(e)[:200]}"
 
+    # ── Attempt 2: Text Generation API (fallback) ──
+    # Kode di bawah ini hanya jalan kalau chat API tidak reachable sama sekali
     try:
         prompt = f"{messages[0]['content']}\n\n{messages[1]['content']}"
         resp = requests.post(
@@ -142,12 +149,11 @@ def call_api(messages):
             return "LOADING"
         if resp.status_code == 429:
             return "RATE_LIMIT"
+        return f"TEXT_ERROR_{resp.status_code}:{resp.text[:300]}"
     except requests.exceptions.Timeout:
         return "TIMEOUT"
-    except Exception:
-        pass
-
-    return "ERROR"
+    except Exception as e:
+        return f"TEXT_EXCEPTION:{str(e)[:200]}"
 
 
 def clean_text(text):
@@ -229,17 +235,36 @@ BUAT TEPAT {jumlah} CAPTION YANG BERBEDA."""
 
     result = call_api(messages)
 
-    error_map = {
-        "LOADING":    "⏳ Model sedang loading... Tunggu 20-30 detik lalu coba lagi.",
-        "RATE_LIMIT": "⚠️ Terlalu banyak request. Tunggu 1-2 menit lalu coba lagi.",
-        "TIMEOUT":    "⏳ Request timeout. Coba lagi.",
-        "ERROR":      "❌ Gagal menghubungi API. Coba lagi nanti.",
-    }
+    # Handle error spesifik
+    if result == "LOADING":
+        vals = ["⏳ Model sedang loading... Tunggu 20-30 detik lalu coba lagi."] + [""] * 4
+        return tuple(gr.update(value=v, visible=True) for v in vals)
+
+    if result == "RATE_LIMIT":
+        vals = ["⚠️ Terlalu banyak request. Tunggu 1-2 menit lalu coba lagi."] + [""] * 4
+        return tuple(gr.update(value=v, visible=True) for v in vals)
 
-    if result in error_map:
-        vals = [error_map[result]] + [""] * 4
+    if result == "TIMEOUT":
+        vals = ["⏳ Request timeout. Coba lagi."] + [""] * 4
+        return tuple(gr.update(value=v, visible=True) for v in vals)
+
+    # Kalau error dari API, tampilkan detailnya biar bisa debug
+    if result and (result.startswith("CHAT_ERROR") or result.startswith("TEXT_ERROR")
+                   or result.startswith("CHAT_EXCEPTION") or result.startswith("TEXT_EXCEPTION")):
+        detail = result.replace("CHAT_ERROR_", "").replace("TEXT_ERROR_", "")
+        msg = (
+            f"❌ Error dari API:\n\n{detail}\n\n"
+            f"Model yang dipakai: {MODEL_NAME}\n\n"
+            f"Coba ganti model di kode app.py baris paling atas.\n"
+            f"Model yang biasanya gratis:\n"
+            f"• Qwen/Qwen2.5-0.5B-Instruct\n"
+            f"• Qwen/Qwen2.5-1.5B-Instruct\n"
+            f"• google/gemma-2-2b-it"
+        )
+        vals = [msg] + [""] * 4
         return tuple(gr.update(value=v, visible=True) for v in vals)
 
+    # Sukses — parse caption
     captions = parse_captions(result, jumlah)
 
     output = []