Function strip_preview_blocks

src-tauri/src/agents/runner.rs:1745–1780

Compress ```html:preview code blocks in conversation history. Instead of sending the full 5-10KB HTML, extract a compact text summary that preserves the widget's content/data so the AI can make targeted edits.

(text: &str)

/// Instead of sending the full 5-10KB HTML, extract a compact text summary
/// that preserves the widget's content/data so the AI can make targeted edits.
fn strip_preview_blocks(text: &str) -> String {
    let mut result = String::with_capacity(text.len());
    let mut in_preview = false;
    let mut preview_content = String::new();

    for line in text.lines() {
        let trimmed = line.trim();
        if !in_preview
            && trimmed.starts_with("```")
            && (trimmed.contains("html:preview")
                || trimmed.contains("html:artifact")
                || trimmed.contains("html:viz")
                || trimmed.contains("html:render"))
        {
            in_preview = true;
            preview_content.clear();
            continue;
        }
        if in_preview {
            if trimmed == "```" {
                in_preview = false;
                // Extract a compact summary from the HTML
                let summary = summarize_html_widget(&preview_content);
                result.push_str(&format!("[enowX Flux widget: {}]\n", summary));
            } else {
                preview_content.push_str(line);
                preview_content.push('\n');
            }
            continue;
        }
        result.push_str(line);
        result.push('\n');
    }

    result.trim().to_string()
}

/// Extract a compact text summary from HTML widget content.
/// Keeps: text content, data values, labels, chart config hints.