chore: migrate config paths to XDG base directory and add hit_count tracking to api_cache

pr/cache/api_cache.py

@@ -22,7 +22,8 @@ class APICache:
                 created_at INTEGER NOT NULL,
                 expires_at INTEGER NOT NULL,
                 model TEXT,
-                token_count INTEGER
+                token_count INTEGER,
+                hit_count INTEGER DEFAULT 0
             )
         """
         )
@@ -31,7 +32,14 @@ class APICache:
             CREATE INDEX IF NOT EXISTS idx_expires_at ON api_cache(expires_at)
         """
         )
-        conn.commit()
+
+        # Check if hit_count column exists, add if not
+        cursor.execute("PRAGMA table_info(api_cache)")
+        columns = [row[1] for row in cursor.fetchall()]
+        if "hit_count" not in columns:
+            cursor.execute("ALTER TABLE api_cache ADD COLUMN hit_count INTEGER DEFAULT 0")
+            conn.commit()
+
         conn.close()
 
     def _generate_cache_key(
@@ -64,10 +72,21 @@ class APICache:
         )
 
         row = cursor.fetchone()
-        conn.close()
 
         if row:
+            # Increment hit count
+            cursor.execute(
+                """
+                UPDATE api_cache SET hit_count = hit_count + 1
+                WHERE cache_key = ?
+            """,
+                (cache_key,),
+            )
+            conn.commit()
+            conn.close()
             return json.loads(row[0])
+
+        conn.close()
         return None
 
     def set(
@@ -90,8 +109,8 @@ class APICache:
         cursor.execute(
             """
             INSERT OR REPLACE INTO api_cache
-            (cache_key, response_data, created_at, expires_at, model, token_count)
-            VALUES (?, ?, ?, ?, ?, ?)
+            (cache_key, response_data, created_at, expires_at, model, token_count, hit_count)
+            VALUES (?, ?, ?, ?, ?, ?, 0)
         """,
             (
                 cache_key,
@@ -149,6 +168,12 @@ class APICache:
         )
         total_tokens = cursor.fetchone()[0] or 0
 
+        cursor.execute(
+            "SELECT SUM(hit_count) FROM api_cache WHERE expires_at > ?",
+            (current_time,),
+        )
+        total_hits = cursor.fetchone()[0] or 0
+
         conn.close()
 
         return {
@@ -156,4 +181,5 @@ class APICache:
             "valid_entries": valid_entries,
             "expired_entries": total_entries - valid_entries,
             "total_cached_tokens": total_tokens,
+            "total_cache_hits": total_hits,
         }

pr/cache/tool_cache.py

@@ -13,6 +13,13 @@ class ToolCache:
         "db_get",
         "db_query",
         "index_directory",
+        "http_fetch",
+        "web_search",
+        "web_search_news",
+        "search_knowledge",
+        "get_knowledge_entry",
+        "get_knowledge_by_category",
+        "get_knowledge_statistics",
     }
 
     def __init__(self, db_path: str, ttl_seconds: int = 300):