feat: display line numbers in DyadRead component (#2615)

## Summary - Add support for showing line number ranges (e.g., ":L3-L5") in the Read file display - Pass `start_line` and `end_line` attributes from the markdown parser to the DyadRead component - Display line number suffix in the file path to provide better context when viewing partial file reads ## Test plan - [x] Verify line numbers appear correctly when a file read includes start/end lines - [x] Verify files read without line numbers display normally - [x] All tests pass 🤖 Generated with [Claude Code](https://claude.com/claude-code)  --- <a href="https://app.devin.ai/review/dyad-sh/dyad/pull/2615" target="_blank"> <picture> <source media="(prefers-color-scheme: dark)" srcset="https://static.devin.ai/assets/gh-open-in-devin-review-dark.svg?v=1"> <img src="https://static.devin.ai/assets/gh-open-in-devin-review-light.svg?v=1" alt="Open with Devin"> </picture> </a>   --- ## Summary by cubic Show line numbers in the Read file path for partial file reads. Start and end lines are parsed from markdown and rendered as a :L suffix (e.g., :L3-L5) for clearer context. - **New Features** - Parse start_line and end_line in DyadMarkdownParser and pass to DyadRead. - DyadRead builds and displays line suffix (:L3, :L3-L5, or :L1-L5) next to the filename; tooltip shows full path with suffix. - Files without line numbers render unchanged. <sup>Written for commit 301bd200f245d934974c8d09ab0edf6ae42d7e9c. Summary will update on new commits.</sup>  Co-authored-by: Will Chen <willchen90@gmail.com> Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

feat: display line numbers in DyadRead component (#2615)
08b2cfa0 · wwwillchen-bot · GitHub · 4ff2633d · 08b2cfa0 · 08b2cfa0
--- a/src/components/chat/DyadMarkdownParser.tsx
+++ b/src/components/chat/DyadMarkdownParser.tsx
@@ -352,6 +352,8 @@ function renderCustomTag(
          node={{
            properties: {
              path: attributes.path || "",
+              startLine: attributes.start_line || "",
+              endLine: attributes.end_line || "",
            },
          }}
        >

--- a/src/components/chat/DyadRead.tsx
+++ b/src/components/chat/DyadRead.tsx
@@ -6,30 +6,57 @@ interface DyadReadProps {
  children?: ReactNode;
  node?: any;
  path?: string;
+  startLine?: string;
+  endLine?: string;
 }

 export const DyadRead: React.FC<DyadReadProps> = ({
  children,
  node,
  path: pathProp,
+  startLine: startLineProp,
+  endLine: endLineProp,
 }) => {
  const path = pathProp || node?.properties?.path || "";
+  const startLine = startLineProp || node?.properties?.startLine || "";
+  const endLine = endLineProp || node?.properties?.endLine || "";
  const fileName = path ? path.split("/").pop() : "";
  const dirPath = path
    ? path.slice(0, path.length - (fileName?.length || 0))
    : "";

+  // Build the line number suffix (e.g., ":L3-L5" or ":L3")
+  const getLineNumberSuffix = () => {
+    if (startLine && endLine) {
+      return `:L${startLine}-L${endLine}`;
+    } else if (startLine) {
+      return `:L${startLine}`;
+    } else if (endLine) {
+      return `:L1-L${endLine}`;
+    }
+    return "";
+  };
+  const lineNumberSuffix = getLineNumberSuffix();
+
  return (
    <div className="my-1">
      <div className="flex items-center gap-1 py-1">
        <FileText size={14} className="shrink-0 text-muted-foreground/50" />
        <span className="text-[13px] font-medium text-foreground/70">Read</span>
        {path && (
-          <span className="text-[13px] truncate min-w-0" title={path}>
+          <span
+            className="text-[13px] truncate min-w-0"
+            title={path + lineNumberSuffix}
+          >
            {dirPath && (
              <span className="text-muted-foreground/85">{dirPath}</span>
            )}
            <span className="font-medium text-foreground/70">{fileName}</span>
+            {lineNumberSuffix && (
+              <span className="text-muted-foreground/85">
+                {lineNumberSuffix}
+              </span>
+            )}
          </span>
        )}
      </div>