Add SEO fields to Tasks model, improve content generation response handling, and enhance progress bar animation

- Added primary_keyword, secondary_keywords, tags, and categories fields to Tasks model
- Updated generate_content function to handle full JSON response with all SEO fields
- Improved progress bar animation: smooth 1% increments every 300ms
- Enhanced step detection for content generation vs clustering vs ideas
- Fixed progress modal to show correct messages for each function type
- Added comprehensive logging to Keywords and Tasks pages for AI functions
- Fixed error handling to show meaningful error messages instead of generic failures

backend/igny8_core/ai/settings.py

@@ -0,0 +1,92 @@
+"""
+AI Settings - Centralized model configurations and limits
+"""
+from typing import Dict, Any
+
+# Model configurations for each AI function
+MODEL_CONFIG = {
+    "auto_cluster": {
+        "model": "gpt-4o-mini",
+        "max_tokens": 3000,
+        "temperature": 0.7,
+        "response_format": {"type": "json_object"},  # Auto-enabled for JSON mode models
+    },
+    "generate_ideas": {
+        "model": "gpt-4.1",
+        "max_tokens": 4000,
+        "temperature": 0.7,
+        "response_format": {"type": "json_object"},
+    },
+    "generate_content": {
+        "model": "gpt-4.1",
+        "max_tokens": 8000,
+        "temperature": 0.7,
+        "response_format": None,  # Text output
+    },
+    "generate_images": {
+        "model": "dall-e-3",
+        "size": "1024x1024",
+        "provider": "openai",
+    },
+    "extract_image_prompts": {
+        "model": "gpt-4o-mini",
+        "max_tokens": 1000,
+        "temperature": 0.7,
+        "response_format": {"type": "json_object"},
+    },
+}
+
+# Function name aliases (for backward compatibility)
+FUNCTION_ALIASES = {
+    "cluster_keywords": "auto_cluster",
+    "auto_cluster_keywords": "auto_cluster",
+    "auto_generate_ideas": "generate_ideas",
+    "auto_generate_content": "generate_content",
+    "auto_generate_images": "generate_images",
+}
+
+
+def get_model_config(function_name: str) -> Dict[str, Any]:
+    """
+    Get model configuration for an AI function.
+    
+    Args:
+        function_name: AI function name (e.g., 'auto_cluster', 'generate_ideas')
+    
+    Returns:
+        Dict with model, max_tokens, temperature, etc.
+    """
+    # Check aliases first
+    actual_name = FUNCTION_ALIASES.get(function_name, function_name)
+    
+    # Get config or return defaults
+    config = MODEL_CONFIG.get(actual_name, {})
+    
+    # Merge with defaults
+    default_config = {
+        "model": "gpt-4.1",
+        "max_tokens": 4000,
+        "temperature": 0.7,
+        "response_format": None,
+    }
+    
+    return {**default_config, **config}
+
+
+def get_model(function_name: str) -> str:
+    """Get model name for function"""
+    config = get_model_config(function_name)
+    return config.get("model", "gpt-4.1")
+
+
+def get_max_tokens(function_name: str) -> int:
+    """Get max tokens for function"""
+    config = get_model_config(function_name)
+    return config.get("max_tokens", 4000)
+
+
+def get_temperature(function_name: str) -> float:
+    """Get temperature for function"""
+    config = get_model_config(function_name)
+    return config.get("temperature", 0.7)
+