(feat): add based maintenance to perform analyze + vacuum

It will help if your database has been runing for a very long time

functions/__based_maintenance.fish

@@ -0,0 +1,25 @@
+function __based_maintenance
+    set -l db ~/.local/share/fish/based/based.db
+    if not test -f $db
+        echo "Database not found. Run 'based init' first."
+        return 1
+    end
+
+    echo "Performing database maintenance..."
+
+    # Get database size before
+    set -l size_before (du -h $db | cut -f1)
+
+    # Vacuum the database
+    sqlite3 $db "VACUUM;"
+
+    # Update statistics
+    sqlite3 $db "ANALYZE;"
+
+    # Get database size after
+    set -l size_after (du -h $db | cut -f1)
+
+    echo "Database maintenance completed."
+    echo "Size before: $size_before"
+    echo "Size after: $size_after"
+end

functions/based.fish

@@ -8,14 +8,22 @@ function based
             __based_stats
         case reset
             __based_reset_state
+        case maintenance vacuum
+            __based_maintenance
         case help '*'
-            echo "Usage: based init|import|stats|reset|help"
+            echo "Usage: based init|import|stats|reset|maintenance|help"
             echo "Commands:"
             echo "  init        - Initialize the Based database"
             echo "  import      - Import fish history into Based"
             echo "  stats       - Show Based statistics"
             echo "  reset       - Reset Based state (clears variables)"
+            echo "  maintenance - Perform database maintenance (vacuum & analyze)"
             echo "  help        - Show this help message"
+            echo ""
+            echo "Configuration variables:"
+            echo "  BASED_NO_CONFIRMATION - Skip confirmation prompts"
+            echo "  BASED_NO_FUZZY        - Disable fuzzy matching"
+            echo "  BASED_EXCLUDED_PATHS  - Paths to exclude from history (glob patterns)"
         case '*'
             echo "Unknown command: $argv[1]"
             echo "Use 'based help' for usage information."