feat: add wooden fish play template

server-rs/crates/module-wooden-fish/src/commands.rs

@@ -0,0 +1,8 @@
+pub fn normalize_wooden_fish_prompt(value: &str, fallback: &str) -> String {
+    let value = value.trim();
+    if value.is_empty() {
+        fallback.to_string()
+    } else {
+        value.to_string()
+    }
+}