fix: escape codes not properly wrapped during line wrapping

- ANSI codes now attach to next visible content, not trailing whitespace
- Rewrote AnsiCodeTracker to track individual attributes
- Line-end resets only turn off underline, preserving background colors
- Added vitest config to exclude node:test files

fixes #109

packages/tui/vitest.config.ts

@@ -0,0 +1,7 @@
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+	test: {
+		include: ["test/wrap-ansi.test.ts"],
+	},
+});