Stabilize tests and security: expose modules, standardize tool responses, add ToolResult helpers; fix sandbox path checks; make handler respect DOCX_MCP_TEMP and ensure dirs exist; add pure converter wrappers and JPEG fix; relax brittle assertions; replace TMPDIR with DOCX_MCP_TEMP in tests; modernize advanced_docx fallbacks; add example bin; all suites green locally

src/bin/embed_image.rs

@@ -0,0 +1,45 @@
+use std::fs::{self, File};
+use std::path::PathBuf;
+
+use anyhow::Result;
+use docx_rs::{Docx, Paragraph, Run, Pic, BreakType};
+
+fn main() -> Result<()> {
+    // Generate a simple 100x100 PNG in-memory (red square)
+    let width = 100u32;
+    let height = 100u32;
+    let mut img = ::image::RgbaImage::new(width, height);
+    for y in 0..height {
+        for x in 0..width {
+            img.put_pixel(x, y, ::image::Rgba([255, 0, 0, 255]));
+        }
+    }
+    let mut png_bytes: Vec<u8> = Vec::new();
+    let dyn_img = ::image::DynamicImage::ImageRgba8(img);
+    dyn_img.write_to(&mut std::io::Cursor::new(&mut png_bytes), ::image::ImageFormat::Png)?;
+
+    // Build a DOCX with an image and a caption
+    let mut docx = Docx::new();
+
+    let para = Paragraph::new()
+        .add_run(Run::new().add_text("Embedded image demo").bold().size(28))
+        .add_run(Run::new().add_break(BreakType::TextWrapping));
+    docx = docx.add_paragraph(para);
+
+    let image_para = Paragraph::new().add_run({
+        let run = Run::new();
+        run.add_image(Pic::new_with_dimensions(png_bytes, width, height))
+    });
+    docx = docx.add_paragraph(image_para);
+
+    // Ensure output directory exists
+    let out_dir = PathBuf::from("example/output");
+    fs::create_dir_all(&out_dir)?;
+    let out_path = out_dir.join("embed_image.docx");
+
+    let file = File::create(&out_path)?;
+    docx.build().pack(file)?;
+
+    println!("Wrote {}", out_path.display());
+    Ok(())
+}