fix: add load_feature_skills() to properly load network planning features

The feature directory contains network planning and design functionalities
(e.g., topology_planner), not device-specific features. These were not being
loaded because load_device_skills() only scanned the device directory.

Changes:
- Added new load_feature_skills() method in SkillsLoader
- Modified reload_skills() to load both device and feature directories
- Device skills: device-specific configurations (e.g., VPCS)
- Feature skills: network planning functionalities (e.g., topology planner)
- Both are now properly loaded into SKILLS_REGISTRY

This ensures that network planning features like topology_planner are available
via the device_skills tool with proper category classification.

gns3server/agent/gns3_copilot/skills/loader.py

@@ -98,7 +98,7 @@ class SkillsLoader:
 
     def load_device_skills(self) -> Dict[str, Dict[str, Any]]:
         """
-        Load all device/feature skills from YAML files.
+        Load all device skills from YAML files.
 
         Returns:
             Dictionary mapping skill keys to skill definitions
@@ -131,7 +131,48 @@ class SkillsLoader:
             except Exception as e:
                 logger.error(f"Failed to load skill from {yaml_file}: {e}")
 
-        logger.debug(f"Loaded {len(skills)} device skills from {device_dir}")
+        logger.debug(f"Loaded {len(skills)} device skills from device directory")
+        return skills
+
+    def load_feature_skills(self) -> Dict[str, Dict[str, Any]]:
+        """
+        Load all feature skills from YAML files.
+
+        Feature skills are network planning and design functionalities
+        (e.g., topology planner), not device-specific features.
+
+        Returns:
+            Dictionary mapping skill keys to skill definitions
+        """
+        if yaml is None:
+            logger.error("PyYAML is not installed. Cannot load skills from YAML.")
+            return {}
+
+        skills = {}
+        feature_dir = self.skills_dir / "feature"
+
+        if not feature_dir.exists():
+            logger.warning(f"Feature skills directory not found: {feature_dir}")
+            return {}
+
+        for yaml_file in feature_dir.glob("*.yaml"):
+            try:
+                skill_data = self._load_yaml(yaml_file)
+                if not skill_data:
+                    logger.warning(f"Skipping empty YAML file: {yaml_file}")
+                    continue
+                # Use device_type from YAML content as the key
+                # Fallback to filename stem if device_type not present
+                skill_key = skill_data.get("device_type") if isinstance(skill_data, dict) else None
+                if not skill_key:
+                    skill_key = yaml_file.stem
+                    logger.warning(f"No device_type in {yaml_file}, using filename '{skill_key}' as key")
+                skills[skill_key] = skill_data
+                logger.debug(f"Loaded feature skill: {skill_key} from {yaml_file}")
+            except Exception as e:
+                logger.error(f"Failed to load feature skill from {yaml_file}: {e}")
+
+        logger.debug(f"Loaded {len(skills)} feature skills from feature directory")
         return skills
 
     def load_prompt(self, prompt_name: str) -> str:

gns3server/agent/gns3_copilot/skills/manager.py

@@ -227,9 +227,17 @@ class SkillsManager:
                     logger.error(f"Invalid skill format for {skill_key}, skipping")
                     continue
 
-            # Load new device/feature skills from YAML files
+            # Load new device skills from YAML files
             new_device_skills = self.loader.load_device_skills()
 
+            # Load new feature skills from YAML files
+            new_feature_skills = self.loader.load_feature_skills()
+
+            # Merge device and feature skills into single registry
+            all_skills = {}
+            all_skills.update(new_device_skills)
+            all_skills.update(new_feature_skills)
+
             # Update registries (safe replace - never leaves dict empty)
             for k in list(INJECTION_SKILLS_REGISTRY):
                 if k not in new_injection_skills:
@@ -237,11 +245,11 @@ class SkillsManager:
             INJECTION_SKILLS_REGISTRY.update(new_injection_skills)
 
             for k in list(SKILLS_REGISTRY):
-                if k not in new_device_skills:
+                if k not in all_skills:
                     del SKILLS_REGISTRY[k]
-            SKILLS_REGISTRY.update(new_device_skills)
+            SKILLS_REGISTRY.update(all_skills)
 
-            logger.info(f"Loaded {len(new_injection_skills)} injection skills and {len(new_device_skills)} device skills")
+            logger.info(f"Loaded {len(new_injection_skills)} injection skills, {len(new_device_skills)} device skills, and {len(new_feature_skills)} feature skills")
             return True
         except Exception as e:
             logger.error(f"Failed to reload skills: {e}")