134 effect arm indent must align

// Resume arms live at exactly ONE level under their `!` line, all aligned.
// A second level of indent has no meaning — the resume sum is FLAT (never
// nest `!`; composition lives in the arm list). Misaligned arms are rejected
// rather than silently re-bound. Sibling of the accept pins 210_092/093.
~pub event request { payload: i32 }
! ask i32
    | halved i32
        | timeout
| done i32

~proc request|zig {
    const r = ask(payload);
    return switch (r) {
        .halved => |v| .{ .done = v },
        .timeout => .{ .done = -1 },
    };
}