feat: add local auth billing and usage management

tests/auth-login-panel.test.ts

@@ -12,15 +12,20 @@ describe("AuthLoginPanel", () => {
     expect(source).not.toContain("randomStr");
   });
 
-  it("supports switching between normal and admin login pages", async () => {
+  it("uses one platform phone/password login for every role", async () => {
     const panelSource = await readFile(join(process.cwd(), "components", "auth-login-panel.tsx"), "utf8");
     const loginPageSource = await readFile(join(process.cwd(), "app", "auth", "login", "page.tsx"), "utf8");
     const adminPageSource = await readFile(join(process.cwd(), "app", "auth", "admin-login", "page.tsx"), "utf8").catch(() => "");
 
-    expect(panelSource).toContain("authMode");
-    expect(panelSource).toContain("alternateHref");
-    expect(loginPageSource).toContain("/auth/admin-login");
-    expect(adminPageSource).toContain('authMode="admin"');
+    expect(panelSource).toContain('phone: submittedPhone');
+    expect(panelSource).toContain('inputMode="tel"');
+    expect(panelSource).toContain('name="phone"');
+    expect(panelSource).toContain('name="password"');
+    expect(panelSource).toContain('new FormData(event.currentTarget)');
+    expect(panelSource).not.toContain('disabled={!configured || submitting || !phone.trim() || !password}');
+    expect(panelSource).not.toContain("authMode");
+    expect(panelSource).not.toContain("alternateHref");
+    expect(loginPageSource).not.toContain("/auth/admin-login");
     expect(adminPageSource).toContain("/auth/login");
   });
 });