feat(lang): block value requires no trailing ; (Rust-style)

A block's value is now its last statement ONLY when that statement is a
trailing expression with no `;`. A trailing `;` discards the value,
leaving the block void. This makes value-vs-statement explicit and lets
the compiler reject "this block was supposed to produce a value".

Compiler:
- Parser records `Block.produces_value` (last stmt is a no-`;` trailing
  expression) + `Block.discarded_semi` (the `;` that discarded a value),
  via `expectSemicolonAfter`. A trailing expression before `}` may now
  omit its `;` (previously a parse error). Match-arm and else-arm bodies
  are built value-producing regardless of the arm `;` (arms are exempt —
  the `;` is an arm terminator).
- Lowering: `lowerBlockValue` / the block-expr path / `inferExprType`
  respect `produces_value`. A value-position block that discards its value
  is a hard error (`lowerValueBody` for function bodies; the value-context
  `.block` path for if/else branches, `catch` bodies, value bindings,
  match arms). Pure-failable `-> !` bodies (value rides the error channel)
  and a value-if whose branches are void are handled without false errors.
- `defer`/`onfail` cleanup bodies lower as statements (void), so a
  trailing `;` there is fine.

Migration (behavior-preserving — output unchanged):
- stdlib + ~210 examples: dropped the trailing `;` on value-position last
  expressions. `format` now ends with an explicit `#insert "return
  result;"` (it relied on `#insert`-as-block-value, which `;` discards).
- Two `main :: () -> s32` examples that relied on the old silent
  default-return got an explicit trailing `0`.
- Rejection snapshots 0412 / 1013 regenerated (their quoted source lines
  lost a `;`); the diagnostics themselves are unchanged.

Docs/tests: specs.md "Block values" section; examples 0040 (rules) + 0041
(rejection); 3 parser unit tests. Filed issue 0066 (pre-existing
match-arm negated-literal phi-width quirk, surfaced not caused here).

Gates: zig build, zig build test, run_examples.sh -> 343 passed,
cross_compile.sh -> 7 passed (also refreshed its stale example names).

examples/0010-basic-basic.sx

@@ -1,5 +1,5 @@
 #import "modules/std.sx";
 
 main :: () -> s32 {
-    if false then 40 else 42;
+    if false then 40 else 42
 }

examples/0012-basic-shadow.sx

@@ -10,6 +10,7 @@ main :: () -> s32 {
         print("scoped x: {}\n", x); //expect 6
     }
     print("main x: {}\n", x); //expect 42
+    0
 }
 
 // ** stdout **

examples/0015-basic-demo.sx

@@ -1,7 +1,7 @@
 std :: #import "modules/std.sx";
 
 vec3 :: (x:f32, y:f32, z:f32) -> std.Vector(3, f32) {
-    .[x,y,z];
+    .[x,y,z]
 }
 
 main :: () {

examples/0016-basic-while.sx

@@ -7,7 +7,7 @@ sumOf10 :: () -> s32 {
         s+=i;
         i+=1;
     }
-    s;
+    s
 }
 
 someSum :: #run sumOf10();

examples/0018-basic-quicksort.sx

@@ -14,7 +14,7 @@ quick_sort :: (items: []$T) {
         }
         i += 1;
         items[i], items[hi] = items[hi], items[i];
-        i;
+        i
     }
 
     sort :: (items: []T, lo: s64, hi: s64) {

examples/0019-basic-dot-shorthand.sx

@@ -19,12 +19,12 @@ Vec2 :: struct {
     x: f32;
     y: f32;
 
-    create :: (x: f32, y: f32) -> Vec2 { Vec2.{ x = x, y = y }; }
+    create :: (x: f32, y: f32) -> Vec2 { Vec2.{ x = x, y = y } }
-    zero :: () -> Vec2 { Vec2.{ x = 0.0, y = 0.0 }; }
+    zero :: () -> Vec2 { Vec2.{ x = 0.0, y = 0.0 } }
-    unit_x :: () -> Vec2 { Vec2.{ x = 1.0, y = 0.0 }; }
+    unit_x :: () -> Vec2 { Vec2.{ x = 1.0, y = 0.0 } }
-    add :: (a: Vec2, b: Vec2) -> Vec2 { Vec2.{ x = a.x + b.x, y = a.y + b.y }; }
+    add :: (a: Vec2, b: Vec2) -> Vec2 { Vec2.{ x = a.x + b.x, y = a.y + b.y } }
-    scale :: (v: Vec2, s: f32) -> Vec2 { Vec2.{ x = v.x * s, y = v.y * s }; }
+    scale :: (v: Vec2, s: f32) -> Vec2 { Vec2.{ x = v.x * s, y = v.y * s } }
-    len :: (v: Vec2) -> s32 { xx (v.x + v.y); }
+    len :: (v: Vec2) -> s32 { xx (v.x + v.y) }
 }
 
 EdgeInsets :: struct {
@@ -33,9 +33,9 @@ EdgeInsets :: struct {
     bottom: f32;
     left: f32;
 
-    all :: (v: f32) -> EdgeInsets { EdgeInsets.{ top = v, right = v, bottom = v, left = v }; }
+    all :: (v: f32) -> EdgeInsets { EdgeInsets.{ top = v, right = v, bottom = v, left = v } }
-    symmetric :: (h: f32, v: f32) -> EdgeInsets { EdgeInsets.{ top = v, right = h, bottom = v, left = h }; }
+    symmetric :: (h: f32, v: f32) -> EdgeInsets { EdgeInsets.{ top = v, right = h, bottom = v, left = h } }
-    horizontal :: (h: f32) -> EdgeInsets { EdgeInsets.{ top = 0.0, right = h, bottom = 0.0, left = h }; }
+    horizontal :: (h: f32) -> EdgeInsets { EdgeInsets.{ top = 0.0, right = h, bottom = 0.0, left = h } }
 }
 
 Trio :: struct {
@@ -43,8 +43,8 @@ Trio :: struct {
     b: s32;
     c: s32;
 
-    make :: (a: s32, b: s32, c: s32) -> Trio { Trio.{ a = a, b = b, c = c }; }
+    make :: (a: s32, b: s32, c: s32) -> Trio { Trio.{ a = a, b = b, c = c } }
-    sum :: (t: Trio) -> s32 { t.a + t.b + t.c; }
+    sum :: (t: Trio) -> s32 { t.a + t.b + t.c }
 }
 
 Result :: enum {
@@ -99,7 +99,7 @@ main :: () {
 
     // T6: Return .variant(payload) from function
     {
-        make_shape :: (r: f32) -> Shape { .circle(r); }
+        make_shape :: (r: f32) -> Shape { .circle(r) }
         sh := make_shape(4.2);
         print("T6: {}\n", sh.circle);
     }
@@ -126,7 +126,7 @@ main :: () {
                 case .circle: 10;
                 case .rect: 20;
                 case .none: 30;
-            };
+            }
         }
         print("T8a: {}\n", describe(.circle(7.0)));
         print("T8b: {}\n", describe(.rect(.{ 3.0, 4.0 })));
@@ -137,8 +137,8 @@ main :: () {
     {
         r : Result = .ok(42);
         ms := if r == {
-            case .ok: (v) { v; }
+            case .ok: (v) { v }
-            case .err: (e) { -1; }
+            case .err: (e) { -1 }
         };
         print("T9: {}\n", ms);
     }
@@ -150,7 +150,7 @@ main :: () {
                 case 0: .none;
                 case 1: .circle(1.0);
                 else: .rect(.{ 9.0, 9.0 });
-            };
+            }
         }
         print("T10a: {}\n", if select(0) == { case .none: 1; else: 0; });
         print("T10b: {}\n", select(1).circle);
@@ -176,7 +176,7 @@ main :: () {
 
     // S3: Return .method(args) from function with return type
     {
-        make_vec :: () -> Vec2 { .create(7.0, 8.0); }
+        make_vec :: () -> Vec2 { .create(7.0, 8.0) }
         v := make_vec();
         print("S3: {} {}\n", v.x, v.y);
     }
@@ -253,7 +253,7 @@ main :: () {
     // E3: Bare .variant (no parens) as function arg
     {
         check_none :: (sh: Shape) -> s32 {
-            if sh == { case .none: 1; else: 0; };
+            if sh == { case .none: 1; else: 0; }
         }
         print("E3: {}\n", check_none(.none));
     }

examples/0020-basic-inline-if-return-fallthrough.sx

@@ -8,9 +8,9 @@
 
 do_it :: () -> bool {
     inline if OS != .ios { return false; }
-    true;
+    true
 }
 
 main :: () -> s32 {
-    if do_it() then 0 else 1;
+    if do_it() then 0 else 1
 }

examples/0021-basic-expression-bodied-fn.sx

@@ -32,5 +32,5 @@ main :: () -> s32 {
     print("total: {}\n", p.total());
     print("scaled: {}\n", p.scaled(3));
 
-    0;
+    0
 }

examples/0022-basic-for-range.sx

@@ -35,5 +35,5 @@ main :: () -> s32 {
 
     // Inline unroll over a heterogeneous pack.
     each(A.{ x = 1 }, B.{ s = "hi" }, A.{ x = 3 });
-    0;
+    0
 }

examples/0023-basic-for-by-ref-capture.sx

@@ -21,5 +21,5 @@ main :: () -> s32 {
             case .none:        { print("none\n"); }
         }
     }
-    0;
+    0
 }

examples/0024-basic-for-list.sx

@@ -5,13 +5,13 @@
 
 Box :: struct {
     v: s64;
-    boxed :: (self: Box) -> s64 { self.v; }   // value receiver
+    boxed :: (self: Box) -> s64 { self.v }   // value receiver
 }
 
 sum_ptr :: (xs: *List(s64)) -> s64 {
     total : s64 = 0;
     for xs: (n) { total = total + n; }         // iterate through a *List
-    total;
+    total
 }
 
 main :: () -> s32 {
@@ -36,5 +36,5 @@ main :: () -> s32 {
     bt : s64 = 0;
     for bs: (*b) { bt = bt + b.boxed(); }      // *Box receiver, value-self method
     print("boxes {}\n", bt);                   // 7
-    0;
+    0
 }

examples/0026-basic-operators.sx

@@ -4,18 +4,18 @@
 #import "modules/test.sx";
 pkg :: #import "modules/testpkg";
 
-add :: (a: s32, b: s32) -> s32 { a + b; }
+add :: (a: s32, b: s32) -> s32 { a + b }
 
-mul :: (a: s32, b: s32) -> s32 { a * b; }
+mul :: (a: s32, b: s32) -> s32 { a * b }
 
 // P4 edge: Chained default→default calls
 Chained :: protocol {
     base :: (msg: string) -> s32;
     wrap :: (msg: string) -> s32 {
-        self.base(msg) + 1;
+        self.base(msg) + 1
     }
     double_wrap :: (msg: string) -> s32 {
-        self.wrap(msg) + self.wrap(msg);
+        self.wrap(msg) + self.wrap(msg)
     }
 }
 

examples/0027-basic-control-flow.sx

@@ -48,7 +48,7 @@ main :: () {
     }
 
     // If block as expression
-    ibe := 10 + if true { 5; } else { 0; };
+    ibe := 10 + if true { 5 } else { 0 };
     print("if-block-expr: {}\n", ibe);
 
     // While basic

examples/0028-basic-functions.sx

@@ -4,24 +4,24 @@
 #import "modules/test.sx";
 pkg :: #import "modules/testpkg";
 
-add :: (a: s32, b: s32) -> s32 { a + b; }
+add :: (a: s32, b: s32) -> s32 { a + b }
 
-mul :: (a: s32, b: s32) -> s32 { a * b; }
+mul :: (a: s32, b: s32) -> s32 { a * b }
 
-identity :: (x: $T) -> T { x; }
+identity :: (x: $T) -> T { x }
 
 pair_add :: (a: $T, b: $U) -> s64 {
-    cast(s64) a + cast(s64) b;
+    cast(s64) a + cast(s64) b
 }
 
 typed_sum :: (..args: []s32) -> s32 {
     result := 0;
     for args: (it) { result = result + it; }
-    result;
+    result
 }
 
 apply :: (f: (s32, s32) -> s32, x: s32, y: s32) -> s32 {
-    f(x, y);
+    f(x, y)
 }
 
 void_return :: () {
@@ -29,12 +29,12 @@ void_return :: () {
 }
 
 implicit_return :: (x: s32) -> s32 {
-    x * 2;
+    x * 2
 }
 
 early_return :: (x: s32) -> s32 {
     if x > 10 { return 99; }
-    x;
+    x
 }
 
 main :: () {
@@ -84,7 +84,7 @@ main :: () {
     print("lambda-ret: {}\n", halve(10.0));
 
     // Local function (non-lambda)
-    local_add :: (a: s32, b: s32) -> s32 { a + b; }
+    local_add :: (a: s32, b: s32) -> s32 { a + b }
     print("local-fn: {}\n", local_add(3, 4));
 
     // Nested function calls

examples/0031-basic-local-fn-return.sx

@@ -19,11 +19,11 @@ main :: () {
     // ========================================================
     print("=== 19. Local Fn Return ===\n");
     {
-        local_pt :: () -> Point { Point.{42, 99}; }
+        local_pt :: () -> Point { Point.{42, 99} }
         lp := local_pt();
         print("local-struct: {} {}\n", lp.x, lp.y);
 
-        local_sh :: () -> Shape { .circle(2.5); }
+        local_sh :: () -> Shape { .circle(2.5) }
         ls := local_sh();
         print("local-enum: {}\n", ls);
     }

examples/0032-basic-ufcs-return-type.sx

@@ -6,7 +6,7 @@ pkg :: #import "modules/testpkg";
 
 Point :: struct { x, y: s32; }
 
-point_sum :: (p: Point) -> s32 { p.x + p.y; }
+point_sum :: (p: Point) -> s32 { p.x + p.y }
 
 // #run compile-time constants
 

examples/0033-basic-if-struct.sx

@@ -14,9 +14,9 @@ main :: () {
     print("=== 22. If-Struct ===\n");
     {
         flag := true;
-        p := if flag { Point.{10, 20}; } else { Point.{30, 40}; };
+        p := if flag { Point.{10, 20} } else { Point.{30, 40} };
         print("if-struct: {} {}\n", p.x, p.y);
-        q := if !flag { Point.{10, 20}; } else { Point.{30, 40}; };
+        q := if !flag { Point.{10, 20} } else { Point.{30, 40} };
         print("else-struct: {} {}\n", q.x, q.y);
     }
 }

examples/0036-basic-ufcs-aliases.sx

@@ -10,7 +10,7 @@ main :: () {
     {
         print("=== UFCS Aliases ===\n");
 
-        num_sum :: (a: s64, b: s64) -> s64 { a + b; }
+        num_sum :: (a: s64, b: s64) -> s64 { a + b }
         sum :: ufcs num_sum;
 
         print("{}\n", num_sum(40, 2));   // 42 — direct call
@@ -20,7 +20,7 @@ main :: () {
         print("{}\n", num_sum(40, 2));   // 42 — direct (was tuple full-splat)
         print("{}\n", 40 |> sum(2));     // 42 — pipe (was tuple partial-splat)
 
-        compute :: (a: s64, b: s64, c: s64, d: s64) -> s64 { a + b * c - d; }
+        compute :: (a: s64, b: s64, c: s64, d: s64) -> s64 { a + b * c - d }
         calc :: ufcs compute;
 
         print("{}\n", compute(1, 2, 3, 4));    // 1+2*3-4 = 3 (was tuple full-splat)
@@ -28,14 +28,14 @@ main :: () {
         print("{}\n", 1 |> calc(2, 3, 4));     // same = 3 — pipe UFCS
 
         // Tuple return type
-        swap :: (a: s64, b: s64) -> (s64, s64) { (b, a); }
+        swap :: (a: s64, b: s64) -> (s64, s64) { (b, a) }
         s := swap(1, 2);
         a := s.0;
         b := s.1;
         print("{}\n", a);                // 2
         print("{}\n", b);                // 1
 
-        wrap :: (x: s64) -> (s64) { (x,); }
+        wrap :: (x: s64) -> (s64) { (x,) }
         t := wrap(99);
         print("{}\n", t.0);             // 99
     }

examples/0037-basic-trailing-commas.sx

@@ -4,7 +4,7 @@
 #import "modules/test.sx";
 pkg :: #import "modules/testpkg";
 
-add :: (a: s32, b: s32) -> s32 { a + b; }
+add :: (a: s32, b: s32) -> s32 { a + b }
 
 main :: () {
 

examples/0038-basic-dead-code-after-terminator.sx

@@ -30,5 +30,5 @@ main :: () -> s32 {
 
     // dead code after a `return` at main's own block level is dropped.
     return 0;
-    print("unreachable\n");
+    print("unreachable\n")
 }

examples/0040-basic-block-value.sx

@@ -0,0 +1,46 @@
+// Block value rule: a block's value is its last statement ONLY when that
+// statement is a trailing expression with NO `;`. A trailing `;` discards the
+// value, leaving the block void. This makes value-vs-statement explicit and lets
+// the compiler reject "forgot to produce a value".
+//
+//   { … expr }    → value is `expr`
+//   { … expr; }   → void (value discarded)
+//
+// Match arms are exempt: the arm `;` is an arm terminator, so `case .x: expr;`
+// still yields `expr` (only an explicit inner braced block follows the rule).
+
+#import "modules/std.sx";
+
+// Implicit return: trailing expression, no `;`.
+double :: (n: s32) -> s32 { n * 2 }
+
+// if/else as a value — each branch's last expression has no `;`.
+sign :: (n: s32) -> s32 {
+    if n < 0 { -1 } else if n > 0 { 1 } else { 0 }
+}
+
+// A value-producing block bound to a name.
+sum3 :: (a: s32, b: s32, c: s32) -> s32 {
+    t := { x := a + b; x + c };   // block value is `x + c`
+    t
+}
+
+// Match arms keep their `;` (exempt): the arm `;` is an arm terminator, so each
+// arm still yields its expression as the match value.
+classify :: (n: s32) -> s32 {
+    if n == {
+        case 0:  100;
+        case 1:  10;
+        else:    7;
+    }
+}
+
+main :: () -> s32 {
+    total : s32 = 0;
+    total = total + double(10);       // 20
+    total = total + sign(-7);         // -1
+    total = total + sum3(1, 2, 3);    // 6
+    total = total + classify(1);      // 10
+    print("block-value total: {}\n", total);   // 20 - 1 + 6 + 10 = 35
+    total
+}

examples/0041-basic-block-value-reject.sx

@@ -0,0 +1,13 @@
+// Rejection counterpart to 0040: a value-position block whose last expression's
+// value is discarded by a trailing `;` produces no value. A `-> T` function
+// whose body ends that way is a compile error (it used to silently return a
+// zero default). Drop the `;` to return the value, or use an explicit `return`.
+
+#import "modules/std.sx";
+
+// `n * 2;` discards the value → the function returns nothing.
+double :: (n: s32) -> s32 {
+    n * 2;
+}
+
+main :: () -> s32 { double(5) }

examples/0112-types-global-type-alias.sx

@@ -6,11 +6,11 @@
 
 Handle :: u32;
 
-ok :: () -> Handle { 0; }
+ok :: () -> Handle { 0 }
 
 g : Handle = 0;
 
 main :: () -> s32 {
     g = ok();
-    if g == 0 then 0 else 1;
+    if g == 0 then 0 else 1
 }

examples/0115-types-compound-type-in-expression.sx

@@ -30,5 +30,5 @@ main :: () -> s32 {
   print("size_of(Maybe)      = {}\n", size_of(Maybe));
   print("size_of(Arr)        = {}\n", size_of(Arr));
   print("size_of(Cb)         = {}\n", size_of(Cb));
-  0;
+  0
 }

examples/0116-types-type-alias-size-align.sx

@@ -18,5 +18,5 @@ main :: () -> s32 {
     print("align chain:       {}\n", align_of(MyChain));
     print("size struct-alias: {}\n", size_of(WideAlias));
     print("align struct-alias:{}\n", align_of(WideAlias));
-    0;
+    0
 }

examples/0117-types-block-string-arg.sx

@@ -24,5 +24,5 @@ main :: () -> s32 {
     invoke_fn(@b, "hello");
     if g_s.len == 0 { print("FAIL: empty\n"); return 1; }
     print("got: <{}>\n", g_s);
-    0;
+    0
 }

examples/0119-types-tuple-values.sx

@@ -8,8 +8,8 @@
 
 Box :: struct { xs: (s32, s32); }
 
-swap :: (a: s64, b: s64) -> (s64, s64) { (b, a); }
+swap :: (a: s64, b: s64) -> (s64, s64) { (b, a) }
-fst  :: (t: (s64, s64)) -> s64 { t.0; }
+fst  :: (t: (s64, s64)) -> s64 { t.0 }
 
 main :: () -> s32 {
     // Inferred positional tuple + numeric field access.
@@ -51,5 +51,5 @@ main :: () -> s32 {
     // typed correctly (s64 prints as a number, string as text).
     mixed := (42, "hi");
     print("mixed {} {}\n", mixed.0, mixed.1);
-    0;
+    0
 }

examples/0120-types-tuple-element-assign.sx

@@ -21,5 +21,5 @@ main :: () -> s32 {
     print("p: x={} y={} .0={}\n", p.x, p.y, p.0);
     p.0 = 33;                       // position write reaches the same slot as .x
     print("p.x after .0=33: {}\n", p.x);
-    0;
+    0
 }

examples/0121-types-types.sx

@@ -34,12 +34,12 @@ MyFloat :: f64;
 
 Status :: enum u8 { ok; err; timeout; }
 
-add :: (a: s32, b: s32) -> s32 { a + b; }
+add :: (a: s32, b: s32) -> s32 { a + b }
 
-mul :: (a: s32, b: s32) -> s32 { a * b; }
+mul :: (a: s32, b: s32) -> s32 { a * b }
 
 vec3 :: (x: f32, y: f32, z: f32) -> Vector(3, f32) {
-    .[x, y, z];
+    .[x, y, z]
 }
 
 // Global variable for address-of test

examples/0122-types-flags.sx

@@ -87,7 +87,7 @@ main :: () {
 
     // Destructure from function return
     {
-        dswap :: (a: s64, b: s64) -> (s64, s64) { (b, a); }
+        dswap :: (a: s64, b: s64) -> (s64, s64) { (b, a) }
         dx, dy := dswap(1, 2);
         print("fn: {} {}\n", dx, dy);
     }

examples/0129-types-tuple-operators.sx

@@ -15,24 +15,24 @@ OptInner :: struct { val: s32; }
 
 OptOuter :: struct { inner: ?OptInner; }
 
-add :: (a: s32, b: s32) -> s32 { a + b; }
+add :: (a: s32, b: s32) -> s32 { a + b }
 
-mul :: (a: s32, b: s32) -> s32 { a * b; }
+mul :: (a: s32, b: s32) -> s32 { a * b }
 
-identity :: (x: $T) -> T { x; }
+identity :: (x: $T) -> T { x }
 
 apply :: (f: (s32, s32) -> s32, x: s32, y: s32) -> s32 {
-    f(x, y);
+    f(x, y)
 }
 
 // P4 edge: Chained default→default calls
 Chained :: protocol {
     base :: (msg: string) -> s32;
     wrap :: (msg: string) -> s32 {
-        self.base(msg) + 1;
+        self.base(msg) + 1
     }
     double_wrap :: (msg: string) -> s32 {
-        self.wrap(msg) + self.wrap(msg);
+        self.wrap(msg) + self.wrap(msg)
     }
 }
 
@@ -258,8 +258,8 @@ main :: () {
     {
         check :: (v: ?s32) -> s32 {
             return if v == {
-                case .some: (val) { val; }
+                case .some: (val) { val }
-                case .none: { 0; }
+                case .none: { 0 }
             };
         }
         a: ?s32 = 55;
@@ -909,9 +909,9 @@ main :: () {
         p_f5.on_resize(p_f5.title, 800, 600);
 
         // C5.E6: protocol value passed through multiple function calls
-        step3 :: (a: Allocator) -> *void { a.alloc(8); }
+        step3 :: (a: Allocator) -> *void { a.alloc(8) }
-        step2 :: (a: Allocator) -> *void { step3(a); }
+        step2 :: (a: Allocator) -> *void { step3(a) }
-        step1 :: (a: Allocator) -> *void { step2(a); }
+        step1 :: (a: Allocator) -> *void { step2(a) }
         gpa_e6 := GPA.init();
         a_e6 : Allocator = xx gpa_e6;
         ptr_e6 := step1(a_e6);

examples/0131-types-init-blocks.sx

@@ -6,7 +6,7 @@ pkg :: #import "modules/testpkg";
 
 Point :: struct { x, y: s32; }
 
-add :: (a: s32, b: s32) -> s32 { a + b; }
+add :: (a: s32, b: s32) -> s32 { a + b }
 
 Counter :: protocol {
     inc :: ();
@@ -21,11 +21,11 @@ SimpleCounter :: struct { val: s32; }
 
 impl Counter for SimpleCounter {
     inc :: (self: *SimpleCounter) { self.val += 1; }
-    get :: (self: *SimpleCounter) -> s32 { self.val; }
+    get :: (self: *SimpleCounter) -> s32 { self.val }
 }
 
 impl Summable for Point {
-    sum :: (self: *Point) -> s32 { self.x + self.y; }
+    sum :: (self: *Point) -> s32 { self.x + self.y }
 }
 
 // Phase 2: #inline protocol for dynamic dispatch
@@ -38,7 +38,7 @@ Pair :: struct ($T: Type) {
 
 impl Summable for Pair($T) {
     sum :: (self: *Pair(T)) -> s32 {
-        xx self.a + xx self.b;
+        xx self.a + xx self.b
     }
 }
 
@@ -104,7 +104,7 @@ main :: () {
 
     // IB5: init block + auto type erasure combined
     {
-        use_counter :: (c: Counter) -> s32 { c.inc(); c.inc(); c.get(); }
+        use_counter :: (c: Counter) -> s32 { c.inc(); c.inc(); c.get() }
         result := use_counter(SimpleCounter.{ val = 0 } {
             self.val = 50;
         });
@@ -123,11 +123,11 @@ main :: () {
             h: f32;
 
             create :: (w: f32, h: f32) -> Dims {
-                Dims.{ w = w, h = h };
+                Dims.{ w = w, h = h }
             }
 
             square :: (size: f32) -> Dims {
-                Dims.{ w = size, h = size };
+                Dims.{ w = size, h = size }
             }
         }
         use_dims :: (d: Dims) { print("SM1: {} {}\n", d.w, d.h); }
@@ -142,7 +142,7 @@ main :: () {
             b: s64;
 
             make :: (a: s64, b: s64) -> Pair {
-                Pair.{ a = a, b = b };
+                Pair.{ a = a, b = b }
             }
         }
         p : Pair = .make(10, 20);

examples/0201-generics-generic-struct.sx

@@ -18,7 +18,7 @@ Complex :: ($T:Type) -> Type {
 Vec3 :: Vec(3, f32);
 
 vec3 :: (x:f32, y:f32, z:f32) -> Vector(3,f32) {
-    .[x, y, z];
+    .[x, y, z]
 }
 
 Foo :: Complex(u32);

examples/0204-generics-generic-protocol-constraint.sx

@@ -16,7 +16,7 @@ Size :: struct {
 impl Lerpable for Size {
     lerp :: (self: Size, b: Size, t: f32) -> Size {
         Size.{ width = self.width + (b.width - self.width) * t,
-               height = self.height + (b.height - self.height) * t };
+               height = self.height + (b.height - self.height) * t }
     }
 }
 
@@ -32,7 +32,7 @@ Animated :: struct ($T: Lerpable) {
         Animated(T).{
             current = value, from = value, to = value,
             elapsed = 0.0, duration = 0.0, active = false
-        };
+        }
     }
 
     set_immediate :: (self: *Animated(T), value: T) {

examples/0205-generics-generic-method-dot-call.sx

@@ -10,9 +10,9 @@
 Holder :: struct {
     n: s64;
 
-    plain :: (self: *Holder) -> s64 { self.n; }
+    plain :: (self: *Holder) -> s64 { self.n }
-    sized :: (self: *Holder, $T: Type) -> s64 { size_of(T); }
+    sized :: (self: *Holder, $T: Type) -> s64 { size_of(T) }
-    taking :: (self: *Holder, $T: Type, v: T) -> T { v; }
+    taking :: (self: *Holder, $T: Type, v: T) -> T { v }
 }
 
 main :: () -> s32 {
@@ -24,5 +24,5 @@ main :: () -> s32 {
     print("sized s64: {}\n", h.sized(s64));
     print("taking explicit: {}\n", h.taking(s32, 42));
     print("taking inferred: {}\n", h.taking(99));
-    0;
+    0
 }

examples/0206-generics-generic-into-block.sx

@@ -33,5 +33,5 @@ main :: () -> s32 {
     if g_a != 10 { print("FAIL: g_a={}\n", g_a); return 1; }
     if g_b != 20 { print("FAIL: g_b={}\n", g_b); return 1; }
     print("generic-into-block ok: a={} b={}\n", g_a, g_b);
-    0;
+    0
 }

examples/0300-closures-lambda.sx

@@ -2,7 +2,7 @@
 
 main :: () {
     fx :: (s:s3) -> s3 {
-        s;
+        s
     }
 
     print("{}\n", fx(133));

examples/0301-closures-fn-pointers.sx

@@ -1,10 +1,10 @@
 #import "modules/std.sx";
 
-add :: (a: s32, b: s32) -> s32 { a + b; }
+add :: (a: s32, b: s32) -> s32 { a + b }
-mul :: (a: s32, b: s32) -> s32 { a * b; }
+mul :: (a: s32, b: s32) -> s32 { a * b }
 
 apply :: (f: (s32, s32) -> s32, x: s32, y: s32) -> s32 {
-    f(x, y);
+    f(x, y)
 }
 
 main :: () {

examples/0303-closures-closure-returning-protocol.sx

@@ -9,11 +9,11 @@ MyProtocol :: protocol {
 
 MyImpl :: struct { value: s64; }
 impl MyProtocol for MyImpl {
-    get_value :: (self: *MyImpl) -> s64 { self.value; }
+    get_value :: (self: *MyImpl) -> s64 { self.value }
 }
 
 make_thing :: () -> MyProtocol {
-    MyImpl.{ value = 42 };
+    MyImpl.{ value = 42 }
 }
 
 main :: () -> void {

examples/0304-closures-enum-arg-through-closure-field.sx

@@ -16,5 +16,5 @@ main :: () -> s32 {
   }};
   c.on(.b);
   c.on(.a);
-  0;
+  0
 }

examples/0306-closures-closure-env-routes-through-context-allocator.sx

@@ -17,7 +17,7 @@ Tracer :: struct {
     init :: () -> *Tracer {
         t : *Tracer = xx libc_malloc(size_of(Tracer));
         t.count = 0;
-        t;
+        t
     }
 }
 
@@ -43,5 +43,5 @@ main :: () -> s32 {
         _ = add_capture(1);
     }
     print("Tracer.count = {}\n", tracer.count);
-    0;
+    0
 }

examples/0307-closures-closure-contextual-params.sx

@@ -24,5 +24,5 @@ main :: () -> s32 {
 
     // argument-position, 3 params (s64, s64, string).
     print("q={}\n", apply3((a, b, c) => a + b + c.len, 1, 2, "xyz"));  // 1+2+3 = 6
-    0;
+    0
 }

examples/0400-protocols-impl-for-builtin.sx

@@ -7,11 +7,11 @@ Lerpable :: protocol #inline {
 }
 
 impl Lerpable for f32 {
-    lerp :: (self: f32, b: f32, t: f32) -> f32 { self + (b - self) * t; }
+    lerp :: (self: f32, b: f32, t: f32) -> f32 { self + (b - self) * t }
 }
 
 do_lerp :: (a: Lerpable, b: f32, t: f32) -> f32 {
-    a.lerp(b, t);
+    a.lerp(b, t)
 }
 
 main :: () -> void {

examples/0401-protocols-protocol-in-wrapper-struct.sx

@@ -10,7 +10,7 @@ Sizable :: protocol {
 
 Widget :: struct { value: s64; }
 impl Sizable for Widget {
-    size :: (self: *Widget) -> s64 { self.value; }
+    size :: (self: *Widget) -> s64 { self.value }
 }
 
 // Wrapper struct with a protocol field (like ViewChild)

examples/0402-protocols-protocol-list-from-fn.sx

@@ -10,7 +10,7 @@ Sizable :: protocol {
 
 Leaf :: struct { value: s64; }
 impl Sizable for Leaf {
-    size :: (self: *Leaf) -> s64 { self.value; }
+    size :: (self: *Leaf) -> s64 { self.value }
 }
 
 add :: (items: *List(Sizable), w: Leaf) {

examples/0403-protocols-protocol-dispatch-via-fn-arg.sx

@@ -10,7 +10,7 @@ Sizable :: protocol {
 
 Leaf :: struct { value: s64; }
 impl Sizable for Leaf {
-    size :: (self: *Leaf) -> s64 { self.value; }
+    size :: (self: *Leaf) -> s64 { self.value }
 }
 
 add :: (items: *List(Sizable), w: Leaf) {

examples/0404-protocols-dot-shorthand-protocol-field.sx

@@ -13,18 +13,18 @@ Drawable :: protocol {
 
 Circle :: struct { radius: s32; }
 impl Drawable for Circle {
-    draw :: (self: *Circle) -> s32 { self.radius; }
+    draw :: (self: *Circle) -> s32 { self.radius }
-    name :: (self: *Circle) -> string { "circle"; }
+    name :: (self: *Circle) -> string { "circle" }
-    layout :: (self: *Circle, x: s32) -> s32 { x + self.radius; }
+    layout :: (self: *Circle, x: s32) -> s32 { x + self.radius }
-    handle :: (self: *Circle, event: s32) -> bool { event > 0; }
+    handle :: (self: *Circle, event: s32) -> bool { event > 0 }
 }
 
 Square :: struct { side: s32; }
 impl Drawable for Square {
-    draw :: (self: *Square) -> s32 { self.side * self.side; }
+    draw :: (self: *Square) -> s32 { self.side * self.side }
-    name :: (self: *Square) -> string { "square"; }
+    name :: (self: *Square) -> string { "square" }
-    layout :: (self: *Square, x: s32) -> s32 { x + self.side; }
+    layout :: (self: *Square, x: s32) -> s32 { x + self.side }
-    handle :: (self: *Square, event: s32) -> bool { event > 1; }
+    handle :: (self: *Square, event: s32) -> bool { event > 1 }
 }
 
 Rect :: struct {
@@ -32,7 +32,7 @@ Rect :: struct {
     y: f32;
     w: f32;
     h: f32;
-    zero :: () -> Rect { Rect.{ x = 0.0, y = 0.0, w = 0.0, h = 0.0 }; }
+    zero :: () -> Rect { Rect.{ x = 0.0, y = 0.0, w = 0.0, h = 0.0 } }
 }
 
 Container :: struct {

examples/0405-protocols-enum-through-protocol-dispatch.sx

@@ -19,7 +19,7 @@ impl Proto for Impl {
 
 take :: (f: Fmt) -> s64 {
   n : s64 = xx f;
-  n;
+  n
 }
 
 main :: () -> s32 {
@@ -28,5 +28,5 @@ main :: () -> s32 {
   p : Proto = xx @Impl.{};
   p.take_fmt(.b);
   p.take_fmt(.a);
-  0;
+  0
 }

examples/0406-protocols-protocol-real-pointer-return.sx

@@ -16,7 +16,7 @@ Impl :: struct {
 
 impl Proto for Impl {
   get :: (self: *Impl) -> *u8 {
-    @self.val;
+    @self.val
   }
 }
 
@@ -26,5 +26,5 @@ main :: () -> s32 {
   raw : *u8 = p.get();
   addr_word : u64 = xx raw;
   print("got pointer: {}\n", addr_word != 0);
-  0;
+  0
 }

examples/0407-protocols-protocol-typeparam-parse.sx

@@ -10,11 +10,11 @@ MyTag :: struct { value: s64 = 0; }
 
 impl Into(MyTag) for s64 {
   convert :: (self: s64) -> MyTag {
-    .{ value = self };
+    .{ value = self }
   }
 }
 
 main :: () -> s32 {
   print("ok\n");
-  0;
+  0
 }

examples/0408-protocols-optional-protocol.sx

@@ -12,7 +12,7 @@ GPU :: protocol {
 
 Impl :: struct {}
 impl GPU for Impl {
-  ping :: (self: *Impl) -> s64 { 42; }
+  ping :: (self: *Impl) -> s64 { 42 }
 }
 
 main :: () -> s32 {
@@ -30,5 +30,5 @@ main :: () -> s32 {
   } else {
     print("BAD: g still null after assign\n");
   }
-  0;
+  0
 }

examples/0409-protocols-protocol-void-pointer-return.sx

@@ -26,5 +26,5 @@ main :: () -> s32 {
 
     print("alloc_count: {}\n", gpa.alloc_count);
 
-    0;
+    0
 }

examples/0410-protocols-impl-visibility-impl.sx

@@ -5,6 +5,6 @@
 
 impl Into(Wrap) for s64 {
   convert :: (self: s64) -> Wrap {
-    .{ v = self * 10 };
+    .{ v = self * 10 }
   }
 }

examples/0410-protocols-impl-visibility-user.sx

@@ -6,5 +6,5 @@
 run_user :: () -> s32 {
   w : Wrap = xx 7;
   print("user: w.v = {}\n", w.v);
-  0;
+  0
 }

examples/0410-protocols-impl-visibility.sx

@@ -18,4 +18,4 @@
 #import "./0410-protocols-impl-visibility-impl.sx";
 #import "./0410-protocols-impl-visibility-user.sx";
 
-main :: () -> s32 { run_user(); }
+main :: () -> s32 { run_user() }

examples/0411-protocols-impl-duplicate-impl-a.sx

@@ -4,6 +4,6 @@
 
 impl Into(Wrap) for s64 {
   convert :: (self: s64) -> Wrap {
-    .{ v = self * 10 };
+    .{ v = self * 10 }
   }
 }

examples/0411-protocols-impl-duplicate-impl-b.sx

@@ -4,6 +4,6 @@
 
 impl Into(Wrap) for s64 {
   convert :: (self: s64) -> Wrap {
-    .{ v = self + 100 };
+    .{ v = self + 100 }
   }
 }

examples/0411-protocols-impl-duplicate.sx

@@ -19,5 +19,5 @@
 main :: () -> s32 {
   w : Wrap = xx 7;
   print("w.v = {}\n", w.v);
-  0;
+  0
 }

examples/0412-protocols-impl-duplicate-same-file.sx

@@ -9,11 +9,11 @@
 MyA :: struct { v: s64 = 0; }
 
 impl Into(MyA) for s64 {
-  convert :: (self: s64) -> MyA { .{ v = self }; }
+  convert :: (self: s64) -> MyA { .{ v = self } }
 }
 
 impl Into(MyA) for s64 {
-  convert :: (self: s64) -> MyA { .{ v = self * 2 }; }
+  convert :: (self: s64) -> MyA { .{ v = self * 2 } }
 }
 
-main :: () -> s32 { 0; }
+main :: () -> s32 { 0 }

examples/0413-protocols-parameterized-protocol-value.sx

@@ -18,5 +18,5 @@ main :: () -> s32 {
 
     b : VL(string) = xx StrCell.{ s = "hi" };
     print("b.get={}\n", b.get());          // hi (T = string)
-    0;
+    0
 }

examples/0414-protocols-generic-struct-protocol-erase.sx

@@ -29,5 +29,5 @@ make :: (..sources: VL) -> VL(s64) {
 main :: () -> s32 {
     r := make(IntCell.{ v = 1 });
     print("{}\n", r.get());      // 99 (dispatch through the erased Combined)
-    0;
+    0
 }

examples/0415-protocols-protocols.sx

@@ -49,24 +49,24 @@ WindowFlags :: enum flags u32 { vsync :: 64; resizable :: 4; hidden :: 128; }
 
 // --- Top-level functions ---
 
-add :: (a: s32, b: s32) -> s32 { a + b; }
+add :: (a: s32, b: s32) -> s32 { a + b }
 
-mul :: (a: s32, b: s32) -> s32 { a * b; }
+mul :: (a: s32, b: s32) -> s32 { a * b }
 
-identity :: (x: $T) -> T { x; }
+identity :: (x: $T) -> T { x }
 
 pair_add :: (a: $T, b: $U) -> s64 {
-    cast(s64) a + cast(s64) b;
+    cast(s64) a + cast(s64) b
 }
 
 typed_sum :: (..args: []s32) -> s32 {
     result := 0;
     for args: (it) { result = result + it; }
-    result;
+    result
 }
 
 apply :: (f: (s32, s32) -> s32, x: s32, y: s32) -> s32 {
-    f(x, y);
+    f(x, y)
 }
 
 void_return :: () {
@@ -74,19 +74,19 @@ void_return :: () {
 }
 
 implicit_return :: (x: s32) -> s32 {
-    x * 2;
+    x * 2
 }
 
 early_return :: (x: s32) -> s32 {
     if x > 10 { return 99; }
-    x;
+    x
 }
 
 vec3 :: (x: f32, y: f32, z: f32) -> Vector(3, f32) {
-    .[x, y, z];
+    .[x, y, z]
 }
 
-point_sum :: (p: Point) -> s32 { p.x + p.y; }
+point_sum :: (p: Point) -> s32 { p.x + p.y }
 
 // #run compile-time constants
 
@@ -215,11 +215,11 @@ SimpleCounter :: struct { val: s32; }
 
 impl Counter for SimpleCounter {
     inc :: (self: *SimpleCounter) { self.val += 1; }
-    get :: (self: *SimpleCounter) -> s32 { self.val; }
+    get :: (self: *SimpleCounter) -> s32 { self.val }
 }
 
 impl Summable for Point {
-    sum :: (self: *Point) -> s32 { self.x + self.y; }
+    sum :: (self: *Point) -> s32 { self.x + self.y }
 }
 
 // Phase 2: #inline protocol for dynamic dispatch
@@ -236,14 +236,14 @@ Accumulator :: struct {
 
 impl Adder for Accumulator {
     add :: (self: *Accumulator, n: s32) { self.total += n; }
-    value :: (self: *Accumulator) -> s32 { self.total; }
+    value :: (self: *Accumulator) -> s32 { self.total }
 }
 
 Doubler :: struct { val: s32; }
 
 impl Adder for Doubler {
     add :: (self: *Doubler, n: s32) { self.val = self.val + n + n; }
-    value :: (self: *Doubler) -> s32 { self.val; }
+    value :: (self: *Doubler) -> s32 { self.val }
 }
 
 // Phase 4: default methods
@@ -272,10 +272,10 @@ impl Repeater for Printer {
 Chained :: protocol {
     base :: (msg: string) -> s32;
     wrap :: (msg: string) -> s32 {
-        self.base(msg) + 1;
+        self.base(msg) + 1
     }
     double_wrap :: (msg: string) -> s32 {
-        self.wrap(msg) + self.wrap(msg);
+        self.wrap(msg) + self.wrap(msg)
     }
 }
 
@@ -283,7 +283,7 @@ ChainImpl :: struct { val: s32; }
 impl Chained for ChainImpl {
     base :: (self: *ChainImpl, msg: string) -> s32 {
         self.val += 1;
-        msg.len;
+        msg.len
     }
 }
 
@@ -296,7 +296,7 @@ Eq :: protocol {
 
 impl Eq for Point {
     eq :: (self: *Point, other: Point) -> bool {
-        self.x == other.x and self.y == other.y;
+        self.x == other.x and self.y == other.y
     }
 }
 
@@ -306,13 +306,13 @@ Cloneable :: protocol {
 
 impl Cloneable for Point {
     clone :: (self: *Point) -> Point {
-        Point.{ x = self.x, y = self.y };
+        Point.{ x = self.x, y = self.y }
     }
 }
 
 impl Eq for s64 {
     eq :: (self: *s64, other: s64) -> bool {
-        self.* == other;
+        self.* == other
     }
 }
 
@@ -320,7 +320,7 @@ impl Eq for s64 {
 
 // Phase 6: Generic constraints
 are_equal :: ($T: Type/Eq, a: T, b: T) -> bool {
-    a.eq(b);
+    a.eq(b)
 }
 
 Hashable :: protocol {
@@ -329,20 +329,20 @@ Hashable :: protocol {
 
 impl Hashable for Point {
     hash :: (self: *Point) -> s64 {
-        xx self.x * 31 + xx self.y;
+        xx self.x * 31 + xx self.y
     }
 }
 
 eq_and_hash :: ($T: Type/Eq/Hashable, a: T, b: T) -> bool {
     if a.hash() != b.hash() { return false; }
-    a.eq(b);
+    a.eq(b)
 }
 
 // P6.4: inline constraint syntax ($T/Protocol)
 
 // P6.4: inline constraint syntax ($T/Protocol)
 sum_of_inline :: (a: $T/Summable, b: T) -> s32 {
-    a.sum() + b.sum();
+    a.sum() + b.sum()
 }
 
 // Phase 7: Generic struct impls
@@ -355,7 +355,7 @@ Pair :: struct ($T: Type) {
 
 impl Summable for Pair($T) {
     sum :: (self: *Pair(T)) -> s32 {
-        xx self.a + xx self.b;
+        xx self.a + xx self.b
     }
 }
 
@@ -435,7 +435,7 @@ main :: () {
     {
         use_adder :: (a: Adder, n: s32) -> s32 {
             a.add(n);
-            a.value();
+            a.value()
         }
         acc := Accumulator.{ total = 100 };
         result := use_adder(xx @acc, 50);
@@ -470,7 +470,7 @@ main :: () {
         use_counter :: (c: Counter) -> s32 {
             c.inc();
             c.inc();
-            c.get();
+            c.get()
         }
         sc := SimpleCounter.{ val = 10 };
         result := use_counter(xx @sc);
@@ -603,14 +603,14 @@ main :: () {
 
     // P2.7: xx on inline struct literal (no intermediate variable)
     {
-        use_adder :: (a: Adder) -> s32 { a.add(10); a.value(); }
+        use_adder :: (a: Adder) -> s32 { a.add(10); a.value() }
         result := use_adder(xx Accumulator.{ total = 5 });
         print("P2.7: {}\n", result);
     }
 
     // P3.3: xx on inline struct literal with vtable protocol
     {
-        use_counter :: (c: Counter) -> s32 { c.inc(); c.inc(); c.get(); }
+        use_counter :: (c: Counter) -> s32 { c.inc(); c.inc(); c.get() }
         result := use_counter(xx SimpleCounter.{ val = 100 });
         print("P3.3: {}\n", result);
     }

examples/0416-protocols-auto-type-erasure.sx

@@ -6,7 +6,7 @@ pkg :: #import "modules/testpkg";
 
 Point :: struct { x, y: s32; }
 
-add :: (a: s32, b: s32) -> s32 { a + b; }
+add :: (a: s32, b: s32) -> s32 { a + b }
 
 Counter :: protocol {
     inc :: ();
@@ -21,11 +21,11 @@ SimpleCounter :: struct { val: s32; }
 
 impl Counter for SimpleCounter {
     inc :: (self: *SimpleCounter) { self.val += 1; }
-    get :: (self: *SimpleCounter) -> s32 { self.val; }
+    get :: (self: *SimpleCounter) -> s32 { self.val }
 }
 
 impl Summable for Point {
-    sum :: (self: *Point) -> s32 { self.x + self.y; }
+    sum :: (self: *Point) -> s32 { self.x + self.y }
 }
 
 // Phase 2: #inline protocol for dynamic dispatch
@@ -42,7 +42,7 @@ Accumulator :: struct {
 
 impl Adder for Accumulator {
     add :: (self: *Accumulator, n: s32) { self.total += n; }
-    value :: (self: *Accumulator) -> s32 { self.total; }
+    value :: (self: *Accumulator) -> s32 { self.total }
 }
 
 main :: () {
@@ -52,7 +52,7 @@ main :: () {
 
     // AE1: function argument — concrete passed where protocol expected (no xx)
     {
-        use_counter :: (c: Counter) -> s32 { c.inc(); c.inc(); c.get(); }
+        use_counter :: (c: Counter) -> s32 { c.inc(); c.inc(); c.get() }
         sc := SimpleCounter.{ val = 10 };
         result := use_counter(sc);
         print("AE1: {}\n", result);
@@ -69,14 +69,14 @@ main :: () {
 
     // AE3: struct literal passed directly (no xx)
     {
-        use_counter :: (c: Counter) -> s32 { c.inc(); c.inc(); c.get(); }
+        use_counter :: (c: Counter) -> s32 { c.inc(); c.inc(); c.get() }
         result := use_counter(SimpleCounter.{ val = 100 });
         print("AE3: {}\n", result);
     }
 
     // AE4: explicit xx still works (not broken)
     {
-        use_counter :: (c: Counter) -> s32 { c.inc(); c.get(); }
+        use_counter :: (c: Counter) -> s32 { c.inc(); c.get() }
         result := use_counter(xx SimpleCounter.{ val = 50 });
         print("AE4: {}\n", result);
     }

examples/0500-packs-varargs.sx

@@ -5,7 +5,7 @@ sum :: (..args: []s32) -> s32 {
     for args: (it) {
         result = result + it;
     }
-    result;
+    result
 }
 
 print_all :: (..args: []s32) {
@@ -31,5 +31,5 @@ main :: () -> s32 {
         out(" ");
     }
     out("\n");
-    0;
+    0
 }

examples/0501-packs-any-varargs.sx

@@ -29,7 +29,7 @@ print_any :: (..args: []Any) {
 }
 
 count :: (..args: []Any) -> s32 {
-    args.len;
+    args.len
 }
 
 main :: () -> s32 {
@@ -43,5 +43,5 @@ main :: () -> s32 {
     out(int_to_string(count(1, 2, 3)));
     out("\n");
 
-    0;
+    0
 }

examples/0504-packs-pack-impl-match.sx

@@ -34,7 +34,7 @@ impl Into(Block) for Closure(..$args) -> $R {
             descriptor = xx @__sx_block_descriptor,
             sx_env = self.env,
             sx_fn = self.fn_ptr,
-        };
+        }
     }
 }
 

examples/0526-packs-protocol-pack.sx

@@ -35,5 +35,5 @@ main :: () -> s32 {
     print("n0={}\n", howmany());            // empty pack
     print("n2={}\n", howmany(a, b));         // two elements
     print("n3={}\n", howmany(a, b, c));      // heterogeneous: IntBox, IntBox, StrBox
-    0;
+    0
 }

examples/0527-packs-pack-non-conform.sx

@@ -20,5 +20,5 @@ main :: () -> s32 {
     a := IntBox.{ v = 1 };
     n := Naked.{ x = 2 };
     print("{}\n", howmany(a, n));   // `n` does not conform to Show
-    0;
+    0
 }

examples/0528-packs-protocol-pack-methods.sx

@@ -27,5 +27,5 @@ main :: () -> s32 {
     print("dog+cat={}\n", pair_sum(d, c));   // 3 + 900 = 903 (heterogeneous)
     print("cat+dog={}\n", pair_sum(c, d));   // 900 + 3 = 903 (order swapped)
     print("dog+dog={}\n", pair_sum(d, Dog.{ age = 4 })); // 3 + 4 = 7
-    0;
+    0
 }

examples/0529-packs-protocol-pack-parameterized.sx

@@ -26,5 +26,5 @@ describe :: (..xs: Box) -> void {
 main :: () -> s32 {
     describe(IntCell.{ v = 11 }, StrCell.{ s = "hi" });
     describe(StrCell.{ s = "x" }, IntCell.{ v = 99 });
-    0;
+    0
 }

examples/0530-packs-pack-interface-only.sx

@@ -18,5 +18,5 @@ leak :: (..xs: Box) -> s64 {
 
 main :: () -> s32 {
     print("{}\n", leak(IntCell.{ v = 5 }));
-    0;
+    0
 }

examples/0531-packs-pack-value-projection.sx

@@ -24,5 +24,5 @@ show :: (..xs: Box) -> void {
 main :: () -> s32 {
     show(IntCell.{ v = 42 }, StrCell.{ s = "hi" });
     show(StrCell.{ s = "x" }, IntCell.{ v = 7 });   // order swapped → (string, s64)
-    0;
+    0
 }

examples/0532-packs-pack-spread-call.sx

@@ -22,5 +22,5 @@ via3 :: (..xs: Box) -> s64 { return add3(..xs.get); }
 main :: () -> s32 {
     print("two={}\n", via2(IntCell.{ v = 10 }, Dbl.{ n = 5 }));            // 10 + 10 = 20
     print("three={}\n", via3(Dbl.{ n = 1 }, IntCell.{ v = 2 }, Dbl.{ n = 3 })); // 2 + 2 + 6 = 10
-    0;
+    0
 }

examples/0533-packs-pack-tuple-materialize.sx

@@ -21,5 +21,5 @@ snapshot :: (..xs: Box) -> void {
 main :: () -> s32 {
     snapshot(IntCell.{ v = 42 }, StrCell.{ s = "hi" });
     snapshot(StrCell.{ s = "x" }, IntCell.{ v = 7 });   // order swapped → (string, s64)
-    0;
+    0
 }

examples/0534-packs-pack-type-projection.sx

@@ -34,5 +34,5 @@ fold :: (..xs: Box) -> s64 {
 main :: () -> s32 {
     snap(IntCell.{ v = 42 }, StrCell.{ s = "hi" });   // (s64, string)
     print("fold={}\n", fold(IntCell.{ v = 10 }, Dbl.{ n = 5 }));   // 10 + 10 = 20
-    0;
+    0
 }

examples/0535-packs-slice-of-protocol-variadic.sx

@@ -27,5 +27,5 @@ each :: (..xs: []Show) -> void {
 main :: () -> s32 {
     each(A.{ x = 1 }, B.{ s = "hi" }, A.{ x = 3 });   // heterogeneous, erased to Show
     each();                                            // empty is fine (len 0)
-    0;
+    0
 }

examples/0536-packs-pack-as-value.sx

@@ -21,5 +21,5 @@ main :: () -> s32 {
     call(A.{});
     _ = ret(A.{});
     iter(A.{});
-    0;
+    0
 }

examples/0537-packs-pack-xx-to-slice.sx

@@ -28,5 +28,5 @@ fwd_show :: (..xs: Show) -> s64 { return show_all(xx xs); }
 main :: () -> s32 {
     print("any={}\n", fwd_any(1, "hi", 2.5));     // 3
     print("show={}\n", fwd_show(A.{}, B.{ s = "x" }, A.{}));  // A B A, 3
-    0;
+    0
 }

examples/0538-packs-generic-struct-pack-field.sx

@@ -21,5 +21,5 @@ main :: () -> s32 {
     b : Box(bool, string, bool) = ---;   // Ts=[string, bool], pair: (string, bool)
     b.pair = ("x", true);
     print("b: 0={} 1={}\n", b.pair.0, b.pair.1);
-    0;
+    0
 }

examples/0539-packs-combined-pack-field.sx

@@ -25,5 +25,5 @@ main :: () -> s32 {
     c.sources = (xx IntCell.{ v = 10 }, xx StrCell.{ s = "hi" });
     c.value = 99;
     print("{} {} {}\n", c.sources.0.get(), c.sources.1.get(), c.value);  // 10 hi 99
-    0;
+    0
 }

examples/0540-packs-pack-type-arg-spread.sx

@@ -23,5 +23,5 @@ make :: (..sources: VL) -> s64 {
 
 main :: () -> s32 {
     print("{}\n", make(IntCell.{ v = 7 }));   // 7
-    0;
+    0
 }

examples/0541-packs-pack-to-protocol-tuple.sx

@@ -24,5 +24,5 @@ build :: (..sources: VL) -> void {
 
 main :: () -> s32 {
     build(IntCell.{ v = 10 }, StrCell.{ s = "hi" });   // 10 hi
-    0;
+    0
 }

examples/0542-packs-mapper-projection-spread.sx

@@ -14,5 +14,5 @@ apply :: (mapper: Closure(s64, s64) -> s64, ..sources: VL) -> s64 {
 
 main :: () -> s32 {
     print("{}\n", apply((a, b) => a + b, IntCell.{ v = 40 }, IntCell.{ v = 2 }));  // 42
-    0;
+    0
 }

examples/0543-packs-canonical-map.sx

@@ -32,5 +32,5 @@ map :: (mapper: Closure(..sources.T) -> $R, ..sources: VL) -> VL($R) {
 main :: () -> s32 {
     r := map((a, b) => a + b, IntCell.{ v = 40 }, IntCell.{ v = 2 });
     print("{}\n", r.get());     // 42
-    0;
+    0
 }

examples/0601-comptime-meta.sx

@@ -2,7 +2,7 @@
 #import "modules/math";
 
 test :: () -> s32 {
-    0;
+    0
 }
 
 Vec4 :: Vector(4,f32);

examples/0602-comptime-interp-cast-ptr-cmp.sx

@@ -15,12 +15,12 @@ R :: struct { x: s32; }
 bug :: (cmd: [:0]u8) -> ?R {
     f := popen(cmd, "r");
     if cast(s64) f == 0 { return null; }
-    R.{ x = 1 };
+    R.{ x = 1 }
 }
 
 post_link :: () -> bool {
     if r := bug("echo hi") { puts("ok"); } else { puts("null"); }
-    true;
+    true
 }
 
 configure :: () {

examples/0603-comptime-interp-variadic-any.sx

@@ -17,7 +17,7 @@ cb :: () -> bool {
     puts("2-arg ok");
     c := format("{} {} {}", "x", "y", "z");
     puts("3-arg ok");
-    true;
+    true
 }
 
 configure :: () {

examples/0604-comptime-typed-store-widths.sx

@@ -35,7 +35,7 @@ sum_bytes :: (buf: [*]u8) -> s64 {
     s : s64 = 0;
     i : s64 = 0;
     while i < BUF_SIZE { s += xx buf[i]; i += 1; }
-    s;
+    s
 }
 
 run_u8 :: () -> s64 {
@@ -45,7 +45,7 @@ run_u8 :: () -> s64 {
     p.* = 0x42;
     s := sum_bytes(buf);
     free(xx buf);
-    s;
+    s
 }
 
 run_u16 :: () -> s64 {
@@ -55,7 +55,7 @@ run_u16 :: () -> s64 {
     p.* = 0x0102;
     s := sum_bytes(buf);
     free(xx buf);
-    s;
+    s
 }
 
 run_u32 :: () -> s64 {
@@ -65,7 +65,7 @@ run_u32 :: () -> s64 {
     p.* = 0x01020304;
     s := sum_bytes(buf);
     free(xx buf);
-    s;
+    s
 }
 
 run_u64 :: () -> s64 {
@@ -75,7 +75,7 @@ run_u64 :: () -> s64 {
     p.* = 0x0102030405060708;
     s := sum_bytes(buf);
     free(xx buf);
-    s;
+    s
 }
 
 run_s8 :: () -> s64 {
@@ -85,7 +85,7 @@ run_s8 :: () -> s64 {
     p.* = 0x42;
     s := sum_bytes(buf);
     free(xx buf);
-    s;
+    s
 }
 
 run_s16 :: () -> s64 {
@@ -95,7 +95,7 @@ run_s16 :: () -> s64 {
     p.* = 0x0102;
     s := sum_bytes(buf);
     free(xx buf);
-    s;
+    s
 }
 
 run_s32 :: () -> s64 {
@@ -105,7 +105,7 @@ run_s32 :: () -> s64 {
     p.* = 0x01020304;
     s := sum_bytes(buf);
     free(xx buf);
-    s;
+    s
 }
 
 run_s64 :: () -> s64 {
@@ -115,7 +115,7 @@ run_s64 :: () -> s64 {
     p.* = 0x0102030405060708;
     s := sum_bytes(buf);
     free(xx buf);
-    s;
+    s
 }
 
 run_bool :: () -> s64 {
@@ -125,7 +125,7 @@ run_bool :: () -> s64 {
     p.* = true;
     s := sum_bytes(buf);
     free(xx buf);
-    s;
+    s
 }
 
 run_f32 :: () -> s64 {
@@ -135,7 +135,7 @@ run_f32 :: () -> s64 {
     p.* = 1.0;
     s := sum_bytes(buf);
     free(xx buf);
-    s;
+    s
 }
 
 run_f64 :: () -> s64 {
@@ -145,7 +145,7 @@ run_f64 :: () -> s64 {
     p.* = 1.0;
     s := sum_bytes(buf);
     free(xx buf);
-    s;
+    s
 }
 
 // ── comptime-baked expected checksums ───────────────────────────────
@@ -169,7 +169,7 @@ EXP_F64  :: #run run_f64();
 check :: (label: string, got: s64, want: s64) -> bool {
     if got == want { return true; }
     print("FAIL {}: comptime={} runtime={}\n", label, want, got);
-    false;
+    false
 }
 
 main :: () -> s32 {

examples/0608-comptime-comptime.sx

@@ -4,9 +4,9 @@
 #import "modules/test.sx";
 pkg :: #import "modules/testpkg";
 
-add :: (a: s32, b: s32) -> s32 { a + b; }
+add :: (a: s32, b: s32) -> s32 { a + b }
 
-mul :: (a: s32, b: s32) -> s32 { a * b; }
+mul :: (a: s32, b: s32) -> s32 { a * b }
 
 // #run compile-time constants
 CT_VAL :: #run add(10, 15);

examples/0700-modules-import.sx

@@ -13,4 +13,5 @@ main :: () -> s32 {
     v:= std.Vector(3,f32).[1,2,3];
 
     std.print("\n{}\n", v);
+    0
 }

examples/0701-modules-c-import.sx

@@ -10,5 +10,5 @@ main :: () -> s32 {
     b := multiply(5, 6);
     print("add_numbers(10, 20) = {}\n", a);
     print("multiply(5, 6) = {}\n", b);
-    0;
+    0
 }

examples/0702-modules-c-import-ns.sx

@@ -6,5 +6,5 @@ main :: () -> s32 {
     b := tc.multiply(5, 6);
     print("tc.add_numbers(10, 20) = {}\n", a);
     print("tc.multiply(5, 6) = {}\n", b);
-    0;
+    0
 }

examples/0703-modules-into-impl-helper.sx

@@ -7,6 +7,6 @@ Wrap :: struct { v: s64 = 0; }
 
 impl Into(Wrap) for s64 {
   convert :: (self: s64) -> Wrap {
-    .{ v = self * 10 };
+    .{ v = self * 10 }
   }
 }

examples/0703-modules-into-import-scope.sx

@@ -9,5 +9,5 @@
 main :: () -> s32 {
   w : Wrap = xx 3;
   print("w.v = {}\n", w.v);
-  0;
+  0
 }

examples/0706-modules-import-non-transitive.sx

@@ -14,5 +14,5 @@ main :: () -> s32 {
     print("b_only_fn: {}\n", b_only_fn());
     print("c_only_fn direct: {}\n", c_only_fn());
     print("c_only_const direct: {}\n", c_only_const);
-    0;
+    0
 }

examples/0706-modules-import-non-transitive/b.sx

@@ -1,5 +1,5 @@
 #import "c.sx";
 
 b_only_fn :: () -> s32 {
-    c_only_fn() + c_only_const;
+    c_only_fn() + c_only_const
 }

examples/0706-modules-import-non-transitive/c.sx

@@ -1,2 +1,2 @@
-c_only_fn :: () -> s32 { 42; }
+c_only_fn :: () -> s32 { 42 }
 c_only_const :: 7;

examples/0707-modules-import-dir-scan-order.sx

@@ -25,5 +25,5 @@ main :: () -> s32 {
         case .a: { print("a\n"); }
         case .b: (v) { print("b={}\n", v); }
     }
-    0;
+    0
 }

examples/0708-modules-xx-any-pack-cross-module/fmt.sx

@@ -16,5 +16,5 @@ build :: (n: s32) -> string {
         result = concat(result, line);
         i = i + 1;
     }
-    result;
+    result
 }

examples/0709-modules-issue-0056-diamond-param-impl.sx

@@ -15,5 +15,5 @@
 main :: () -> s32 {
     w : Wrapped = xx 7;
     print("{}\n", w.v);
-    0;
+    0
 }