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

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

paperclip-reference/server/src/config-file.ts

@@ -0,0 +1,16 @@
+import fs from "node:fs";
+import { paperclipConfigSchema, type PaperclipConfig } from "@paperclipai/shared";
+import { resolvePaperclipConfigPath } from "./paths.js";
+
+export function readConfigFile(): PaperclipConfig | null {
+  const configPath = resolvePaperclipConfigPath();
+
+  if (!fs.existsSync(configPath)) return null;
+
+  try {
+    const raw = JSON.parse(fs.readFileSync(configPath, "utf-8"));
+    return paperclipConfigSchema.parse(raw);
+  } catch {
+    return null;
+  }
+}