Publish harness and TUI open-source

initial sync from the monorepo

crates/codegen/xai-grok-markdown/fuzz/fuzz_targets/render_all.rs

@@ -0,0 +1,35 @@
+#![no_main]
+
+use libfuzzer_sys::fuzz_target;
+use xai_grok_markdown::style::test_style::STYLE;
+use xai_grok_markdown::{render_markdown_ratatui_full, StreamingMarkdownRenderer};
+
+const CHUNK_SIZES: [usize; 3] = [1, 16, 32];
+
+fuzz_target!(|data: &[u8]| {
+    let Ok(s) = std::str::from_utf8(data) else {
+        return;
+    };
+
+    // Full render: pretty / non-pretty
+    for pretty in [true, false] {
+        let _ = render_markdown_ratatui_full(s, STYLE, pretty, None);
+    }
+
+    // Streaming with rotating chunk sizes: pretty / non-pretty
+    for pretty in [true, false] {
+        let mut r = StreamingMarkdownRenderer::new(STYLE, pretty);
+        let mut pos = 0;
+        let mut ci = 0;
+        while pos < s.len() {
+            let mut end = (pos + CHUNK_SIZES[ci]).min(s.len());
+            // snap to char boundary
+            while end < s.len() && !s.is_char_boundary(end) {
+                end += 1;
+            }
+            r.push_and_render(&s[pos..end], None);
+            pos = end;
+            ci = (ci + 1) % CHUNK_SIZES.len();
+        }
+    }
+});