Add NS8 local production smoke

src/v1_smoke.zig

@@ -188,3 +188,68 @@ fn freeRows(rows: [][]const u8) void {
     for (rows) |row| allocator.free(row);
     allocator.free(rows);
 }
+
+test "regular: ns8 local production smoke covers editor workflow before real-device dogfood" {
+    var client = try tui.Client.initWithIo(allocator, .{ .width = 39, .height = 8 }, std.testing.io);
+    defer client.deinit();
+
+    try client.handleTraceLine("repo_file src/main.zig=pub fn main() void { needle(); }\n");
+    try client.handleTraceLine("repo_file README.md=needle docs\n");
+    try client.handleTraceLine("file_picker");
+    try client.handleTraceLine("list_filter src/main");
+    try client.handleTraceLine("file_open_selected");
+    try client.handleTraceLine("key end");
+    try client.handleInput("i");
+    try client.handleInput("X");
+    try client.handleTraceLine("key escape");
+    try client.handleTraceLine("save_without_format");
+    try std.testing.expect(std.mem.indexOf(u8, try client.saved(), "X") != null);
+
+    try client.handleTraceLine("search_text needle");
+    {
+        const frame = try client.render(allocator);
+        defer allocator.free(frame);
+        try std.testing.expect(std.mem.indexOf(u8, frame, "src/main.zig") != null);
+        try std.testing.expect(frameLinesFit(frame, 39));
+    }
+
+    try client.handleTraceLine("panel_close");
+    try client.handleTraceLine("diagnostic_fixture zls|2|src/main.zig|0|3|warning|demo");
+    try client.handleInput(" ");
+    try client.handleInput("d");
+    {
+        const frame = try client.render(allocator);
+        defer allocator.free(frame);
+        try std.testing.expect(std.mem.indexOf(u8, frame, "diag:fresh:zls") != null);
+        try std.testing.expect(frameLinesFit(frame, 39));
+    }
+
+    try client.handleTraceLine("panel_close");
+    try client.handleTraceLine("key escape");
+    try client.handleInput(" ");
+    try client.handleInput("t");
+    try client.handleInput("x");
+    {
+        const frame = try client.render(allocator);
+        defer allocator.free(frame);
+        try std.testing.expect(std.mem.indexOf(u8, frame, "job:status:cancelled:user") != null);
+        try std.testing.expect(frameLinesFit(frame, 39));
+    }
+
+    var guarded = try tui.Client.init(allocator, .{ .width = 39, .height = 8 });
+    defer guarded.deinit();
+    try guarded.handleTraceLine("open abc");
+    try guarded.handleTraceLine("language_edit zls|format|1|0|3|ZLS");
+    try guarded.handleTraceLine("language_edit prettier|format|1|0|3|PRETTY");
+    try guarded.handleTraceLine("save");
+    try std.testing.expectError(tui.Error.NothingSaved, guarded.saved());
+    const guarded_frame = try guarded.render(allocator);
+    defer allocator.free(guarded_frame);
+    try std.testing.expect(std.mem.indexOf(u8, guarded_frame, "action:format:provider") != null);
+}
+
+fn frameLinesFit(frame: []const u8, width: usize) bool {
+    var lines = std.mem.splitScalar(u8, frame, '\n');
+    while (lines.next()) |line| if (line.len > width) return false;
+    return true;
+}