feat: add /config chat config updates

src/auto-reply/reply/config-value.ts

@@ -0,0 +1,37 @@
+export function parseConfigValue(
+  raw: string,
+): { value?: unknown; error?: string } {
+  const trimmed = raw.trim();
+  if (!trimmed) return { error: "Missing value." };
+
+  if (trimmed.startsWith("{") || trimmed.startsWith("[")) {
+    try {
+      return { value: JSON.parse(trimmed) };
+    } catch (err) {
+      return { error: `Invalid JSON: ${String(err)}` };
+    }
+  }
+
+  if (trimmed === "true") return { value: true };
+  if (trimmed === "false") return { value: false };
+  if (trimmed === "null") return { value: null };
+
+  if (/^-?\d+(\.\d+)?$/.test(trimmed)) {
+    const num = Number(trimmed);
+    if (Number.isFinite(num)) return { value: num };
+  }
+
+  if (
+    (trimmed.startsWith("\"") && trimmed.endsWith("\"")) ||
+    (trimmed.startsWith("'") && trimmed.endsWith("'"))
+  ) {
+    try {
+      return { value: JSON.parse(trimmed) };
+    } catch {
+      const unquoted = trimmed.slice(1, -1);
+      return { value: unquoted };
+    }
+  }
+
+  return { value: trimmed };
+}