Add plannotator extension v0.19.10

extensions/plannotator/server/ide.ts

@@ -0,0 +1,46 @@
+/**
+ * IDE integration — open plan diffs in VS Code.
+ * Node.js equivalent of packages/server/ide.ts.
+ */
+
+import { spawn } from "node:child_process";
+
+/** Open two files in VS Code's diff viewer. Node.js equivalent of packages/server/ide.ts */
+export function openEditorDiff(
+	oldPath: string,
+	newPath: string,
+): Promise<{ ok: true } | { error: string }> {
+	return new Promise((resolve) => {
+		const proc = spawn("code", ["--diff", oldPath, newPath], {
+			stdio: ["ignore", "ignore", "pipe"],
+		});
+		let stderr = "";
+		proc.stderr?.on("data", (chunk: Buffer) => {
+			stderr += chunk.toString();
+		});
+		proc.on("error", (err) => {
+			if (err.message.includes("ENOENT")) {
+				resolve({
+					error:
+						"VS Code CLI not found. Run 'Shell Command: Install code command in PATH' from the VS Code command palette.",
+				});
+			} else {
+				resolve({ error: err.message });
+			}
+		});
+		proc.on("close", (code) => {
+			if (code !== 0) {
+				if (stderr.includes("not found") || stderr.includes("ENOENT")) {
+					resolve({
+						error:
+							"VS Code CLI not found. Run 'Shell Command: Install code command in PATH' from the VS Code command palette.",
+					});
+				} else {
+					resolve({ error: `code --diff exited with ${code}: ${stderr}` });
+				}
+			} else {
+				resolve({ ok: true });
+			}
+		});
+	});
+}