fix: update chart_service path from data/ to storage/

PR #86 moved state files to storage/ but missed chart_service.py,
which still pointed to data/charts.json. The file exists at
/app/storage/charts.json in the container but the code looked
in /app/data/charts.json, causing empty autocomplete results.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

services/chart_service.py

@@ -4,6 +4,7 @@ Chart Service for managing gameplay charts and infographics.
 This service handles loading, saving, and managing chart definitions
 from the JSON configuration file.
 """
+
 import json
 import logging
 from pathlib import Path
@@ -18,6 +19,7 @@ logger = logging.getLogger(__name__)
 @dataclass
 class Chart:
     """Represents a gameplay chart or infographic."""
+
     key: str
     name: str
     category: str
@@ -27,17 +29,17 @@ class Chart:
     def to_dict(self) -> Dict[str, Any]:
         """Convert chart to dictionary (excluding key)."""
         return {
-            'name': self.name,
-            'category': self.category,
-            'description': self.description,
-            'urls': self.urls
+            "name": self.name,
+            "category": self.category,
+            "description": self.description,
+            "urls": self.urls,
         }
 
 
 class ChartService:
     """Service for managing gameplay charts and infographics."""
 
-    CHARTS_FILE = Path(__file__).parent.parent / 'data' / 'charts.json'
+    CHARTS_FILE = Path(__file__).parent.parent / "storage" / "charts.json"
 
     def __init__(self):
         """Initialize the chart service."""
@@ -54,21 +56,21 @@ class ChartService:
                 self._categories = {}
                 return
 
-            with open(self.CHARTS_FILE, 'r') as f:
+            with open(self.CHARTS_FILE, "r") as f:
                 data = json.load(f)
 
             # Load categories
-            self._categories = data.get('categories', {})
+            self._categories = data.get("categories", {})
 
             # Load charts
-            charts_data = data.get('charts', {})
+            charts_data = data.get("charts", {})
             for key, chart_data in charts_data.items():
                 self._charts[key] = Chart(
                     key=key,
-                    name=chart_data['name'],
-                    category=chart_data['category'],
-                    description=chart_data.get('description', ''),
-                    urls=chart_data.get('urls', [])
+                    name=chart_data["name"],
+                    category=chart_data["category"],
+                    description=chart_data.get("description", ""),
+                    urls=chart_data.get("urls", []),
                 )
 
             logger.info(f"Loaded {len(self._charts)} charts from {self.CHARTS_FILE}")
@@ -81,20 +83,17 @@ class ChartService:
     def _save_charts(self) -> None:
         """Save charts to JSON file."""
         try:
-            # Ensure data directory exists
+            # Ensure storage directory exists
             self.CHARTS_FILE.parent.mkdir(parents=True, exist_ok=True)
 
             # Build data structure
             data = {
-                'charts': {
-                    key: chart.to_dict()
-                    for key, chart in self._charts.items()
-                },
-                'categories': self._categories
+                "charts": {key: chart.to_dict() for key, chart in self._charts.items()},
+                "categories": self._categories,
             }
 
             # Write to file
-            with open(self.CHARTS_FILE, 'w') as f:
+            with open(self.CHARTS_FILE, "w") as f:
                 json.dump(data, f, indent=2)
 
             logger.info(f"Saved {len(self._charts)} charts to {self.CHARTS_FILE}")
@@ -134,10 +133,7 @@ class ChartService:
         Returns:
             List of charts in the specified category
         """
-        return [
-            chart for chart in self._charts.values()
-            if chart.category == category
-        ]
+        return [chart for chart in self._charts.values() if chart.category == category]
 
     def get_chart_keys(self) -> List[str]:
         """
@@ -157,8 +153,9 @@ class ChartService:
         """
         return self._categories.copy()
 
-    def add_chart(self, key: str, name: str, category: str,
-                  urls: List[str], description: str = "") -> None:
+    def add_chart(
+        self, key: str, name: str, category: str, urls: List[str], description: str = ""
+    ) -> None:
         """
         Add a new chart.
 
@@ -176,18 +173,19 @@ class ChartService:
             raise BotException(f"Chart '{key}' already exists")
 
         self._charts[key] = Chart(
-            key=key,
-            name=name,
-            category=category,
-            description=description,
-            urls=urls
+            key=key, name=name, category=category, description=description, urls=urls
         )
         self._save_charts()
         logger.info(f"Added chart: {key}")
 
-    def update_chart(self, key: str, name: Optional[str] = None,
-                    category: Optional[str] = None, urls: Optional[List[str]] = None,
-                    description: Optional[str] = None) -> None:
+    def update_chart(
+        self,
+        key: str,
+        name: Optional[str] = None,
+        category: Optional[str] = None,
+        urls: Optional[List[str]] = None,
+        description: Optional[str] = None,
+    ) -> None:
         """
         Update an existing chart.