Docs rewrite

content/docs/guide/patterns.mdx

@@ -0,0 +1,41 @@
+---
+title: Patterns
+description: Pattern matching with literals, tuples, structs, named tuples, wildcards, and mutable bindings.
+icon: Split
+---
+
+```mist
+// Literal patterns
+match x {
+    1 => "one",
+    2 => "two",
+    _ => "other",
+}
+
+// Tuple patterns
+let (a, b) = (1, 2);
+
+// Struct patterns
+match value {
+    Point { x, y } => x + y,
+    Point { x: 0, y } => y,
+    _ => 0,
+}
+
+// Named tuple patterns (newtype)
+let MyType(value) = my_var;
+
+// Wildcard / etc
+let _ = get_side_effect();
+match x {
+    1 => ...,
+    .. => ...,  // rest / etc
+}
+
+// Mutable binding in pattern
+let mut x = 42;
+match ref_to_option {
+    Some(mut value) => value += 1,
+    None => {},
+}
+```