feat(meta): add about meta-command

src/branding.rs

@@ -2,13 +2,31 @@
 use insta::assert_snapshot;
 
 pub fn startup_msg() -> String {
-    let name = env!("CARGO_PKG_NAME");
-    let version = env!("CARGO_PKG_VERSION");
     let authors = env!("CARGO_PKG_AUTHORS");
+    let about = about_msg();
+    let shorthelp = shorthelp_msg();
 
     format!(
-        "{name} v{version} started.\n\
-        Copyright 2025 {authors}. All rights reserved."
+        "{about}\n\n\
+        Copyright 2025 {authors}. All rights reserved.\n\n\
+        {shorthelp}"
+    )
+}
+
+pub fn about_msg() -> String {
+    let name = env!("CARGO_PKG_NAME");
+    let version = env!("CARGO_PKG_VERSION");
+
+    format!(
+        "{name} v{version} -- A database engine\n\
+        Note: This is experimental software. No maintenance is intendend."
+    )
+}
+
+pub fn shorthelp_msg() -> String {
+    String::from(
+        "Type .license for licensing information\n\
+        Type .help for usage information",
     )
 }