Merge worktree-agent: add struct literals, generics, print/log builtins

crates/el-parser/src/ast.rs

@@ -59,6 +59,8 @@ pub enum TypeExpr {
     Result { ok: Box<TypeExpr>, err: Box<TypeExpr> },
     /// `Map<K, V>` — built-in key-value map type
     Map { key: Box<TypeExpr>, value: Box<TypeExpr> },
+    /// A generic type parameter: `T`, `E` — used inside generic function signatures.
+    TypeParam(String),
 }
 
 // ── Patterns (for match arms) ─────────────────────────────────────────────────
@@ -118,6 +120,12 @@ pub enum Expr {
     Try(Box<Expr>),
     /// Map literal: `{"key": value, ...}`
     MapLiteral(Vec<(Expr, Expr)>),
+    /// Struct literal: `Point { x: 10, y: 20 }`
+    StructLit {
+        type_name: String,
+        fields: Vec<(String, Expr)>,
+        span: Span,
+    },
 }
 
 // ── Match arm ─────────────────────────────────────────────────────────────────
@@ -190,10 +198,12 @@ pub enum Stmt {
     Return(Expr, Span),
     /// A bare expression used as a statement (usually a call).
     Expr(Expr, Span),
-    /// `fn name(params) -> ReturnType { body }` (with optional decorators)
+    /// `fn name<T, E>(params) -> ReturnType { body }` (with optional decorators)
     FnDef {
         name: String,
         decorators: Vec<Decorator>,
+        /// Generic type parameters, e.g. `["T", "E"]` for `fn foo<T, E>`.
+        type_params: Vec<String>,
         params: Vec<Param>,
         return_type: TypeExpr,
         body: Vec<Stmt>,