merge: wave 2 executor (01-02) into main

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

paperclip-reference/packages/adapters/gemini-local/src/server/utils.ts

@@ -0,0 +1,8 @@
+export function firstNonEmptyLine(text: string): string {
+    return (
+        text
+            .split(/\r?\n/)
+            .map((line) => line.trim())
+            .find(Boolean) ?? ""
+    );
+}