refactor(src): split oversized modules

src/config/config.preservation-on-validation-failure.test.ts

@@ -0,0 +1,50 @@
+import fs from "node:fs/promises";
+import path from "node:path";
+import { describe, expect, it, vi } from "vitest";
+import { withTempHome } from "./test-helpers.js";
+
+describe("config preservation on validation failure", () => {
+  it("preserves unknown fields via passthrough", async () => {
+    vi.resetModules();
+    const { validateConfigObject } = await import("./config.js");
+    const res = validateConfigObject({
+      agents: { list: [{ id: "pi" }] },
+      customUnknownField: { nested: "value" },
+    });
+    expect(res.ok).toBe(true);
+    expect(
+      (res as { config: Record<string, unknown> }).config.customUnknownField,
+    ).toEqual({
+      nested: "value",
+    });
+  });
+
+  it("preserves config data when validation fails", async () => {
+    await withTempHome(async (home) => {
+      const configDir = path.join(home, ".clawdbot");
+      await fs.mkdir(configDir, { recursive: true });
+      await fs.writeFile(
+        path.join(configDir, "clawdbot.json"),
+        JSON.stringify({
+          agents: { list: [{ id: "pi" }] },
+          routing: { allowFrom: ["+15555550123"] },
+          customData: { preserved: true },
+        }),
+        "utf-8",
+      );
+
+      vi.resetModules();
+      const { readConfigFileSnapshot } = await import("./config.js");
+      const snap = await readConfigFileSnapshot();
+
+      expect(snap.valid).toBe(true);
+      expect(snap.legacyIssues).toHaveLength(0);
+      expect((snap.config as Record<string, unknown>).customData).toEqual({
+        preserved: true,
+      });
+      expect(snap.config.channels?.whatsapp?.allowFrom).toEqual([
+        "+15555550123",
+      ]);
+    });
+  });
+});