Switch to gemini-2.5-flash model to avoid quota issues

HF_README.md

@@ -10,7 +10,7 @@ pinned: false
 license: mit
 python_version: 3.10
 models:
-  - google/gemini-2.0-flash-exp
+  - google/gemini-2.5-flash
 ---
 
 # 🎬 Animetrix AI - Educational Animation Generator

backend/compiler.py

@@ -177,7 +177,7 @@ async def generate_manim_code(outline: dict, step_audio_paths=None):
     
     try:
         response = client.models.generate_content(
-            model='gemini-2.0-flash-exp',
+            model='gemini-2.5-flash',
             contents=prompt
         )
         code = response.text.strip()

backend/teacher.py

@@ -45,7 +45,7 @@ async def generate_outline(prompt: str):
     full_prompt = f"{TEACHER_SYSTEM_PROMPT}\n\nUSER PROMPT: {prompt}\n\nOUTPUT JSON:"
     
     response = client.models.generate_content(
-        model='gemini-2.0-flash-exp',
+        model='gemini-2.5-flash',
         contents=full_prompt
     )