diff --git a/package-lock.json b/package-lock.json
index db8bae3..fab6c99 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,6 +12,9 @@
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@@ -2574,6 +2587,131 @@
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@@ -2884,6 +3022,16 @@
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+      "dev": true,
+      "license": "MIT",
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@@ -3320,6 +3468,16 @@
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+      "resolved": "https://registry.npmjs.org/cac/-/cac-6.7.14.tgz",
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+      "license": "MIT",
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@@ -3362,6 +3520,23 @@
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+      "resolved": "https://registry.npmjs.org/chai/-/chai-5.3.3.tgz",
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+      "license": "MIT",
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+        "check-error": "^2.1.1",
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@@ -3394,6 +3569,16 @@
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+      "license": "MIT",
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@@ -3805,6 +3990,16 @@
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@@ -6946,6 +7170,13 @@
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@@ -7054,6 +7285,13 @@
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-        "lightningcss": "^1.32.0",
+        "esbuild": "^0.27.0",
+        "fdir": "^6.5.0",
         "picomatch": "^4.0.3",
-        "postcss": "^8.5.8",
-        "rolldown": "1.0.0-rc.9",
+        "postcss": "^8.5.6",
+        "rollup": "^4.43.0",
         "tinyglobby": "^0.2.15"
       },
       "bin": {
@@ -8601,10 +8875,9 @@
       },
       "peerDependencies": {
         "@types/node": "^20.19.0 || >=22.12.0",
-        "@vitejs/devtools": "^0.0.0-alpha.31",
-        "esbuild": "^0.27.0",
         "jiti": ">=1.21.0",
         "less": "^4.0.0",
+        "lightningcss": "^1.21.0",
         "sass": "^1.70.0",
         "sass-embedded": "^1.70.0",
         "stylus": ">=0.54.8",
@@ -8617,18 +8890,15 @@
         "@types/node": {
           "optional": true
         },
-        "@vitejs/devtools": {
-          "optional": true
-        },
-        "esbuild": {
-          "optional": true
-        },
         "jiti": {
           "optional": true
         },
         "less": {
           "optional": true
         },
+        "lightningcss": {
+          "optional": true
+        },
         "sass": {
           "optional": true
         },
@@ -8652,6 +8922,29 @@
         }
       }
     },
+    "node_modules/vite-node": {
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/vite-node/-/vite-node-3.2.4.tgz",
+      "integrity": "sha512-EbKSKh+bh1E1IFxeO0pg1n4dvoOTt0UDiXMd/qn++r98+jPO1xtJilvXldeuQ8giIB5IkpjCgMleHMNEsGH6pg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "cac": "^6.7.14",
+        "debug": "^4.4.1",
+        "es-module-lexer": "^1.7.0",
+        "pathe": "^2.0.3",
+        "vite": "^5.0.0 || ^6.0.0 || ^7.0.0-0"
+      },
+      "bin": {
+        "vite-node": "vite-node.mjs"
+      },
+      "engines": {
+        "node": "^18.0.0 || ^20.0.0 || >=22.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      }
+    },
     "node_modules/vite-plugin-solid": {
       "version": "2.11.11",
       "resolved": "https://registry.npmjs.org/vite-plugin-solid/-/vite-plugin-solid-2.11.11.tgz",
@@ -8695,6 +8988,86 @@
         }
       }
     },
+    "node_modules/vitest": {
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/vitest/-/vitest-3.2.4.tgz",
+      "integrity": "sha512-LUCP5ev3GURDysTWiP47wRRUpLKMOfPh+yKTx3kVIEiu5KOMeqzpnYNsKyOoVrULivR8tLcks4+lga33Whn90A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/chai": "^5.2.2",
+        "@vitest/expect": "3.2.4",
+        "@vitest/mocker": "3.2.4",
+        "@vitest/pretty-format": "^3.2.4",
+        "@vitest/runner": "3.2.4",
+        "@vitest/snapshot": "3.2.4",
+        "@vitest/spy": "3.2.4",
+        "@vitest/utils": "3.2.4",
+        "chai": "^5.2.0",
+        "debug": "^4.4.1",
+        "expect-type": "^1.2.1",
+        "magic-string": "^0.30.17",
+        "pathe": "^2.0.3",
+        "picomatch": "^4.0.2",
+        "std-env": "^3.9.0",
+        "tinybench": "^2.9.0",
+        "tinyexec": "^0.3.2",
+        "tinyglobby": "^0.2.14",
+        "tinypool": "^1.1.1",
+        "tinyrainbow": "^2.0.0",
+        "vite": "^5.0.0 || ^6.0.0 || ^7.0.0-0",
+        "vite-node": "3.2.4",
+        "why-is-node-running": "^2.3.0"
+      },
+      "bin": {
+        "vitest": "vitest.mjs"
+      },
+      "engines": {
+        "node": "^18.0.0 || ^20.0.0 || >=22.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      },
+      "peerDependencies": {
+        "@edge-runtime/vm": "*",
+        "@types/debug": "^4.1.12",
+        "@types/node": "^18.0.0 || ^20.0.0 || >=22.0.0",
+        "@vitest/browser": "3.2.4",
+        "@vitest/ui": "3.2.4",
+        "happy-dom": "*",
+        "jsdom": "*"
+      },
+      "peerDependenciesMeta": {
+        "@edge-runtime/vm": {
+          "optional": true
+        },
+        "@types/debug": {
+          "optional": true
+        },
+        "@types/node": {
+          "optional": true
+        },
+        "@vitest/browser": {
+          "optional": true
+        },
+        "@vitest/ui": {
+          "optional": true
+        },
+        "happy-dom": {
+          "optional": true
+        },
+        "jsdom": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/vitest/node_modules/tinyexec": {
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/tinyexec/-/tinyexec-0.3.2.tgz",
+      "integrity": "sha512-KQQR9yN7R5+OSwaK0XQoj22pwHoTlgYqmUscPYoknOoWCWfj/5/ABTMRi69FrKU5ffPVh5QcFikpWJI/P1ocHA==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/webidl-conversions": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
@@ -8732,6 +9105,23 @@
         "node": "^16.13.0 || >=18.0.0"
       }
     },
+    "node_modules/why-is-node-running": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/why-is-node-running/-/why-is-node-running-2.3.0.tgz",
+      "integrity": "sha512-hUrmaWBdVDcxvYqnyh09zunKzROWjbZTiNy8dBEjkS7ehEDQibXJ7XvlmtbwuTclUiIyN+CyXQD4Vmko8fNm8w==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "siginfo": "^2.0.0",
+        "stackback": "0.0.2"
+      },
+      "bin": {
+        "why-is-node-running": "cli.js"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/widest-line": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/widest-line/-/widest-line-5.0.0.tgz",
diff --git a/package.json b/package.json
index 69f7127..94e5008 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,9 @@
   "scripts": {
     "dev": "vinxi dev",
     "build": "vinxi build",
-    "start": "vinxi start"
+    "start": "vinxi start",
+    "test": "vitest run",
+    "test:watch": "vitest"
   },
   "dependencies": {
     "@solidjs/meta": "^0.29.4",
@@ -13,6 +15,9 @@
     "solid-js": "^1.9.5",
     "vinxi": "^0.5.7"
   },
+  "devDependencies": {
+    "vitest": "^3.2.4"
+  },
   "engines": {
     "node": ">=20"
   }
diff --git a/src/components/dashboard/DashboardLayout.tsx b/src/components/dashboard/DashboardLayout.tsx
index 7929557..b49cfb7 100644
--- a/src/components/dashboard/DashboardLayout.tsx
+++ b/src/components/dashboard/DashboardLayout.tsx
@@ -1,6 +1,7 @@
 import { Component, Show, createEffect, For, createSignal } from 'solid-js';
 import { useNavigate, A } from '@solidjs/router';
 import { authState, logout, switchRole } from '~/lib/auth';
+import { shouldShowRoleSwitcher } from '~/lib/auth-flow';
 
 // ── Icons (inline SVGs for zero deps) ─────────────────────────────────────────
 
@@ -180,7 +181,7 @@ export default function DashboardLayout(props: { children: any }) {
         <header class="dashboard-topbar">
           <div class="topbar-title">&nbsp;</div>
           <div class="topbar-right">
-            <Show when={roleOptions().length > 1}>
+            <Show when={shouldShowRoleSwitcher(roleOptions())}>
               <select
                 class="input"
                 style={{ width: '210px', 'font-size': '13px', padding: '8px 10px' }}
diff --git a/src/lib/auth-flow.test.ts b/src/lib/auth-flow.test.ts
new file mode 100644
index 0000000..a0a0025
--- /dev/null
+++ b/src/lib/auth-flow.test.ts
@@ -0,0 +1,41 @@
+import { describe, expect, it } from 'vitest';
+import { resolvePostLoginTarget, shouldShowRoleSwitcher } from './auth-flow';
+
+describe('resolvePostLoginTarget', () => {
+  it('returns safe redirect when provided', () => {
+    const target = resolvePostLoginTarget({
+      redirect: '/dashboard/jobs',
+      intent: null,
+      storedIntent: null,
+    });
+    expect(target).toBe('/dashboard/jobs');
+  });
+
+  it('ignores unsafe redirect and falls back to intent path', () => {
+    const target = resolvePostLoginTarget({
+      redirect: 'https://evil.example.com',
+      intent: 'professional',
+      storedIntent: null,
+    });
+    expect(target).toBe('/users/onboarding/professional');
+  });
+
+  it('falls back to dashboard when no redirect and no intent', () => {
+    const target = resolvePostLoginTarget({
+      redirect: null,
+      intent: null,
+      storedIntent: null,
+    });
+    expect(target).toBe('/dashboard');
+  });
+});
+
+describe('shouldShowRoleSwitcher', () => {
+  it('returns false for single role', () => {
+    expect(shouldShowRoleSwitcher(['CUSTOMER'])).toBe(false);
+  });
+
+  it('returns true for multiple roles', () => {
+    expect(shouldShowRoleSwitcher(['PHOTOGRAPHER', 'TUTOR'])).toBe(true);
+  });
+});
diff --git a/src/lib/auth-flow.ts b/src/lib/auth-flow.ts
new file mode 100644
index 0000000..e6a8478
--- /dev/null
+++ b/src/lib/auth-flow.ts
@@ -0,0 +1,24 @@
+import { CanonicalIntent, intentToOnboardingPath } from './auth-intent';
+
+export function normalizeSafeRedirect(value: string | null | undefined): string | null {
+  if (!value) return null;
+  return value.startsWith('/') ? value : null;
+}
+
+export function resolvePostLoginTarget(params: {
+  redirect?: string | null;
+  intent?: CanonicalIntent;
+  storedIntent?: CanonicalIntent;
+}): string {
+  const safeRedirect = normalizeSafeRedirect(params.redirect);
+  if (safeRedirect) return safeRedirect;
+
+  const resolvedIntent = params.intent || params.storedIntent || null;
+  if (resolvedIntent) return intentToOnboardingPath(resolvedIntent);
+
+  return '/dashboard';
+}
+
+export function shouldShowRoleSwitcher(roles: string[] | null | undefined): boolean {
+  return Array.isArray(roles) && roles.length > 1;
+}
diff --git a/src/routes/auth/login/index.tsx b/src/routes/auth/login/index.tsx
index 7e98bfc..1d41549 100644
--- a/src/routes/auth/login/index.tsx
+++ b/src/routes/auth/login/index.tsx
@@ -1,9 +1,10 @@
 import { A, useNavigate, useSearchParams } from '@solidjs/router';
 import { createMemo, createSignal, onMount } from 'solid-js';
-import { intentToOnboardingPath, normalizeIntent, readCanonicalIntent, saveCanonicalIntent } from '~/lib/auth-intent';
+import { normalizeIntent, readCanonicalIntent, saveCanonicalIntent } from '~/lib/auth-intent';
 import { isValidEmail, isValidCaptcha } from '~/lib/form-validation';
 import PublicHeader from '~/components/PublicHeader';
 import CaptchaCanvas from '~/components/CaptchaCanvas';
+import { resolvePostLoginTarget } from '~/lib/auth-flow';
 
 function makeCaptcha() {
   const chars = 'ABCDEFGHJKLMNPQRSTUVWXYZ23456789';
@@ -33,12 +34,11 @@ export default function LoginPage() {
   const navigate = useNavigate();
   const [search] = useSearchParams();
   const intent = normalizeIntent(search.intent || search.intentRole);
-  const redirect = search.redirect;
-  const safeRedirect = redirect && redirect.startsWith('/') ? redirect : null;
-  const postLoginTarget = safeRedirect || (() => {
-    const resolvedIntent = intent || readCanonicalIntent();
-    return resolvedIntent ? intentToOnboardingPath(resolvedIntent) : '/dashboard';
-  })();
+  const postLoginTarget = resolvePostLoginTarget({
+    redirect: search.redirect,
+    intent,
+    storedIntent: readCanonicalIntent(),
+  });
 
   const [email, setEmail] = createSignal('');
   const [password, setPassword] = createSignal('');