Fixed template inheritance and SQLite connection pooling

- Each page template now parsed with base.html separately to avoid content block conflicts
- Connection fragments parsed standalone without base layout
- Increased SQLite max connections to 5 to prevent nested query deadlocks
- Verified connection tracing works through patch panels and wall sockets

internal/db/db.go

@@ -21,7 +21,7 @@ func Init(path string) (*Store, error) {
 		return nil, fmt.Errorf("open db: %w", err)
 	}
 
-	db.SetMaxOpenConns(1)
+	db.SetMaxOpenConns(5)
 
 	if _, err := db.Exec(schemaSQL); err != nil {
 		db.Close()