Build the current workspace snapshot on native CI runners

This branch snapshots the in-progress desktop workspace so GitHub-hosted Windows and Linux runners can package the same source tree that already passes local verification on macOS.

Constraint: Local Apple Silicon Docker/Wine packaging crashes before Windows artifacts are produced
Rejected: Publish from the incomplete base repo state | remote typecheck failed because current source additions were missing
Confidence: medium
Scope-risk: broad
Directive: Treat this branch as a build snapshot only; do not merge it without reviewing the unrelated workspace changes it contains
Tested: local typecheck, lint, workspace typecheck, unit tests, integration tests, e2e smoke, macOS signed release upload
Not-tested: Native Windows/Linux artifacts before this CI run

tests/unit/ipc-core-admin-handlers.test.ts

@@ -0,0 +1,58 @@
+import { mkdtemp, rm } from "node:fs/promises";
+import { join } from "node:path";
+import { tmpdir } from "node:os";
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { IPC_CHANNELS } from "@shared/contracts";
+import { AppDatabase } from "../../src/main/database";
+import { registerCoreAdminHandlers } from "../../src/main/ipc-core-admin-handlers";
+
+const tempDirs: string[] = [];
+
+async function createTempDir(prefix: string) {
+  const dir = await mkdtemp(join(tmpdir(), prefix));
+  tempDirs.push(dir);
+  return dir;
+}
+
+afterEach(async () => {
+  await Promise.all(tempDirs.splice(0).map((dir) => rm(dir, { recursive: true, force: true })));
+});
+
+describe("ipc-core-admin-handlers connector saves", () => {
+  it("accepts compatible connector model catalogs stored as csv", async () => {
+    const profileDir = await createTempDir("agentcompany-admin-handler-");
+    const db = new AppDatabase(profileDir);
+    db.init();
+
+    const handlers = new Map<string, (...args: any[]) => any>();
+    registerCoreAdminHandlers({
+      registerHandle: (channel, handler) => {
+        handlers.set(channel, handler);
+      },
+      db,
+      ensureCompanyExists: () => null,
+      publishDomainChanged: vi.fn(),
+      checkConnector: vi.fn(),
+      openConnectorAuthTerminal: vi.fn(),
+      openGenericTerminal: vi.fn(),
+    });
+
+    const saveConnector = handlers.get(IPC_CHANNELS.saveConnector);
+    if (!saveConnector) {
+      throw new Error("saveConnector handler was not registered.");
+    }
+
+    const result = await saveConnector(null, {
+      id: "claude_compatible",
+      command: "claude",
+      model: "model-alpha,model-beta,model-gamma",
+      envBindingText: "ANTHROPIC_BASE_URL=https://example.com/anthropic",
+      notes: "Compat provider",
+    }) as { ok: boolean; error?: { code: string; message: string } };
+
+    expect(result.ok).toBe(true);
+    expect(db.getConnector("claude_compatible").model).toBe("model-alpha,model-beta,model-gamma");
+
+    db.close();
+  });
+});