fix(e2e): add waitForSidebar helper and networkidle waits for reliability

Add waitForSidebar helper function with explicit sidebar visibility wait
and networkidle state to ensure page is fully loaded before assertions.
This addresses flaky E2E tests where elements were not consistently
found due to timing issues during page transitions.

.github/FUNDING.yml

@@ -0,0 +1 @@
+github_sponsors: [privilegedescalation]

.github/workflows/ci.yaml

@@ -2,9 +2,13 @@ name: CI
 
 on:
   push:
-    branches: [main]
+    branches: ['**']
   pull_request:
-    branches: [main]
+    branches: [main, dev]
+  workflow_dispatch:
+
+permissions:
+  contents: read
 
 jobs:
   ci:

.github/workflows/e2e.yaml

@@ -0,0 +1,23 @@
+name: E2E Tests
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: e2e-${{ github.repository }}
+  cancel-in-progress: false
+
+jobs:
+  e2e:
+    uses: privilegedescalation/.github/.github/workflows/plugin-e2e.yaml@hugh/add-pnpm-support-plugin-e2e
+    with:
+      node-version: '22'
+      headlamp-version: v0.40.1
+      e2e-namespace: headlamp-dev

.gitignore

@@ -14,4 +14,10 @@ coverage/
 *.swo
 *~
 .vscode/
-.idea/
+.idea/
+
+# E2E
+e2e/.auth/
+.env.e2e
+playwright-report/
+test-results/

.markdownlint-cli2.jsonc

@@ -0,0 +1,53 @@
+{
+  "config": {
+    // Line length — not enforced for docs with code examples
+    "MD013": false,
+    // First line heading — files use YAML frontmatter, not headings
+    "MD041": false,
+    // Emphasis as heading — common pattern for Option 1/2/3 sections
+    "MD036": false,
+    // No duplicate heading — changelog files repeat section names intentionally
+    "MD024": false,
+    // Fenced code language — not always applicable for diagram blocks
+    "MD040": false,
+    // Table column style — table alignment is visual, not semantic
+    "MD060": false,
+    // Ordered list item prefix — number resets are intentional in documents
+    "MD029": false,
+    // No inline HTML — each elements are valid in valid Markdown
+    "MD033": false,
+    // List marker space — spacing after list markers varies by editor
+    "MD030": false,
+    // Blanks around headings — not always needed in compact docs
+    "MD022": false,
+    // Blanks around lists — not always needed in compact docs
+    "MD032": false,
+    // Blanks around fences — not always needed between adjacent blocks
+    "MD031": false,
+    // Multiple blanks — editor artifacts, not semantic
+    "MD012": false,
+    // Single title — files may have multiple H1 sections
+    "MD025": false,
+    // Trailing spaces — editor artifacts
+    "MD009": false,
+    // Bare URLs — URL shortening not always needed
+    "MD034": false,
+    // Single trailing newline — editor artifacts
+    "MD047": false,
+    // Trailing punctuation — heading punctuation is intentional
+    "MD026": false,
+    // Space in emphasis — double-asterisk bold spacing varies by renderer
+    "MD037": false,
+    // No hard tabs — some generated docs use tabs for indentation
+    "MD010": false,
+    // Code block style — generated docs may use inconsistent styles
+    "MD046": false,
+    // Comment style — generated docs have no comments
+    "MD048": false,
+    // Commands show output — shell examples intentionally show only commands
+    "MD014": false
+  },
+  "ignores": [
+    "docs/api-reference/generated/**"
+  ]
+}

.markdownlintignore

@@ -0,0 +1 @@
+docs/api-reference/generated/**

README.md

@@ -32,3 +32,4 @@ gh workflow run Release --field version=0.1.0
 ## License
 
 Apache-2.0
+

e2e/argocd.spec.ts

@@ -0,0 +1,50 @@
+import { test, expect } from '@playwright/test';
+
+async function waitForSidebar(page: import('@playwright/test').Page) {
+  const sidebar = page.getByRole('navigation', { name: 'Navigation' });
+  await expect(sidebar).toBeVisible({ timeout: 15_000 });
+  await page.waitForLoadState('networkidle');
+  return sidebar;
+}
+
+test.describe('ArgoCD plugin smoke tests', () => {
+  test('sidebar contains ArgoCD entry', async ({ page }) => {
+    await page.goto('/');
+    const sidebar = await waitForSidebar(page);
+    await expect(sidebar.getByRole('button', { name: /argocd/i })).toBeVisible();
+  });
+
+  test('ArgoCD sidebar entry navigates to applications list', async ({ page }) => {
+    await page.goto('/');
+    const sidebar = await waitForSidebar(page);
+
+    const argocdEntry = sidebar.getByRole('button', { name: /argocd/i });
+    await expect(argocdEntry).toBeVisible();
+    await argocdEntry.click();
+
+    await page.waitForLoadState('networkidle');
+    await expect(page).toHaveURL(/argocd/);
+    await expect(page.getByRole('heading', { name: /argo.*cd.*applications/i })).toBeVisible();
+  });
+
+  test('applications list page renders', async ({ page }) => {
+    await page.goto('/c/main/argocd');
+    await waitForSidebar(page);
+
+    await expect(page.getByRole('heading', { name: /argo.*cd.*applications/i })).toBeVisible({
+      timeout: 15_000,
+    });
+
+    const hasTable = await page.locator('table').first().isVisible().catch(() => false);
+    const hasContent = await page.locator('text=/application|sync|health/i').first().isVisible().catch(() => false);
+    expect(hasTable || hasContent).toBe(true);
+  });
+
+  test('plugin settings page shows argocd plugin entry', async ({ page }) => {
+    await page.goto('/settings/plugins');
+    await page.waitForLoadState('networkidle');
+
+    const pluginEntry = page.locator('text=/argocd|argo.*cd/i').first();
+    await expect(pluginEntry).toBeVisible({ timeout: 30_000 });
+  });
+});

e2e/auth.setup.ts

@@ -0,0 +1,69 @@
+import { test as setup, expect, Page } from '@playwright/test';
+
+const AUTH_STATE_PATH = 'e2e/.auth/state.json';
+
+async function authenticateWithOIDC(page: Page, username: string, password: string): Promise<void> {
+  await page.goto('/');
+  await page.waitForURL('**/login');
+
+  const popupPromise = page.waitForEvent('popup');
+  await page.getByRole('button', { name: /sign in/i }).click();
+  const popup = await popupPromise;
+
+  await popup.waitForLoadState('domcontentloaded');
+  await popup.waitForLoadState('networkidle');
+
+  const usernameField = popup.getByRole('textbox', { name: /email or username/i });
+  await usernameField.waitFor({ state: 'visible', timeout: 15_000 });
+  await usernameField.fill(username);
+  await popup.getByRole('button', { name: /log in/i }).click();
+
+  await popup.waitForLoadState('networkidle');
+  const passwordField = popup.getByRole('textbox', { name: /password/i });
+  await passwordField.waitFor({ state: 'visible', timeout: 15_000 });
+  await passwordField.fill(password);
+  await popup.getByRole('button', { name: /continue|log in/i }).click();
+
+  await popup.waitForEvent('close', { timeout: 15_000 });
+
+  await expect(page.getByRole('navigation', { name: 'Navigation' })).toBeVisible({
+    timeout: 15_000,
+  });
+}
+
+async function authenticateWithToken(page: Page, token: string): Promise<void> {
+  await page.goto('/');
+  await page.waitForURL(/\/(login|token)$/);
+
+  if (page.url().includes('/login')) {
+    const useTokenBtn = page.getByRole('button', { name: /use a token/i });
+    await useTokenBtn.waitFor({ state: 'visible', timeout: 15_000 });
+    await useTokenBtn.click();
+    await page.waitForURL('**/token');
+  }
+
+  await page.getByRole('textbox', { name: /id token/i }).fill(token);
+  await page.getByRole('button', { name: /authenticate/i }).click();
+
+  await expect(page.getByRole('navigation', { name: 'Navigation' })).toBeVisible({
+    timeout: 15_000,
+  });
+}
+
+setup('authenticate with Headlamp', async ({ page }) => {
+  const username = process.env.AUTHENTIK_USERNAME;
+  const password = process.env.AUTHENTIK_PASSWORD;
+  const token = process.env.HEADLAMP_TOKEN;
+
+  if (username && password) {
+    await authenticateWithOIDC(page, username, password);
+  } else if (token) {
+    await authenticateWithToken(page, token);
+  } else {
+    throw new Error(
+      'Set AUTHENTIK_USERNAME + AUTHENTIK_PASSWORD for OIDC auth, or HEADLAMP_TOKEN for token auth'
+    );
+  }
+
+  await page.context().storageState({ path: AUTH_STATE_PATH });
+});

package.json

@@ -23,7 +23,9 @@
     "format": "prettier --write src/",
     "format:check": "prettier --check src/",
     "test": "vitest run",
-    "test:watch": "vitest"
+    "test:watch": "vitest",
+    "e2e": "playwright test",
+    "e2e:headed": "playwright test --headed"
   },
   "peerDependencies": {
     "react": "^18.0.0",
@@ -39,6 +41,7 @@
   "devDependencies": {
     "@kinvolk/headlamp-plugin": "^0.13.0",
     "@mui/material": "^5.15.14",
+    "@playwright/test": "^1.58.2",
     "@testing-library/jest-dom": "^6.4.8",
     "@testing-library/react": "^16.0.0",
     "@testing-library/user-event": "^14.5.2",
@@ -52,9 +55,7 @@
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "react-router-dom": "^5.3.0",
-    "tar": "^7.5.11",
     "typescript": "~5.6.2",
-    "undici": "^7.24.3",
     "vitest": "^3.0.5"
   }
-}
+}

playwright.config.ts

@@ -0,0 +1,27 @@
+import { defineConfig, devices } from '@playwright/test';
+
+export default defineConfig({
+  testDir: './e2e',
+  timeout: 30_000,
+  expect: { timeout: 10_000 },
+  fullyParallel: false,
+  forbidOnly: !!process.env.CI,
+  retries: process.env.CI ? 1 : 0,
+  reporter: 'list',
+  use: {
+    baseURL: process.env.HEADLAMP_URL || (() => { throw new Error('HEADLAMP_URL is required — run scripts/deploy-e2e-headlamp.sh first'); })(),
+    trace: 'on-first-retry',
+    screenshot: 'only-on-failure',
+  },
+  projects: [
+    { name: 'setup', testMatch: /auth\.setup\.ts/, timeout: 60_000 },
+    {
+      name: 'chromium',
+      use: {
+        ...devices['Desktop Chrome'],
+        storageState: 'e2e/.auth/state.json',
+      },
+      dependencies: ['setup'],
+    },
+  ],
+});

pnpm-lock.yaml

@@ -22,6 +22,9 @@ importers:
       '@mui/material':
         specifier: ^5.15.14
         version: 5.18.0(@emotion/react@11.14.0(@types/react@19.2.14)(react@18.3.1))(@emotion/styled@11.14.1(@emotion/react@11.14.0(@types/react@19.2.14)(react@18.3.1))(@types/react@19.2.14)(react@18.3.1))(@types/react@19.2.14)(react-dom@18.3.1(react@18.3.1))(react@18.3.1)
+      '@playwright/test':
+        specifier: ^1.58.2
+        version: 1.59.1
       '@testing-library/jest-dom':
         specifier: ^6.4.8
         version: 6.9.1
@@ -58,15 +61,9 @@ importers:
       react-router-dom:
         specifier: ^5.3.0
         version: 5.3.4(react@18.3.1)
-      tar:
-        specifier: ^7.5.11
-        version: 7.5.13
       typescript:
         specifier: ~5.6.2
         version: 5.6.3
-      undici:
-        specifier: ^7.24.3
-        version: 7.25.0
       vitest:
         specifier: ^3.0.5
         version: 3.2.4(@types/debug@4.1.13)(@types/node@20.19.39)(jsdom@24.1.3)(msw@2.4.9(typescript@5.6.3))(terser@5.46.1)(yaml@2.8.3)
@@ -1007,6 +1004,11 @@ packages:
     resolution: {integrity: sha512-+1VkjdD0QBLPodGrJUeqarH8VAIvQODIbwh9XpP5Syisf7YoQgsJKPNFoqqLQlu+VQ/tVSshMR6loPMn8U+dPg==}
     engines: {node: '>=14'}
 
+  '@playwright/test@1.59.1':
+    resolution: {integrity: sha512-PG6q63nQg5c9rIi4/Z5lR5IVF7yU5MqmKaPOe0HSc0O2cX1fPi96sUQu5j7eo4gKCkB2AnNGoWt7y4/Xx3Kcqg==}
+    engines: {node: '>=18'}
+    hasBin: true
+
   '@popperjs/core@2.11.8':
     resolution: {integrity: sha512-P1st0aksCrn9sGZhp8GMYwBnQsbvAWsZAX44oXNNvLHGqAOcoVxmjZiohstwQ7SqKnbR47akdNi+uleWD8+g6A==}
 
@@ -3088,6 +3090,11 @@ packages:
   fs.realpath@1.0.0:
     resolution: {integrity: sha512-OO0pH2lK6a0hZnAdau5ItzHPI6pUlvI7jMVnxUQRtw4owF2wk8lOSabtGDCTP4Ggrg2MbGnWO9X8K1t4+fGMDw==}
 
+  fsevents@2.3.2:
+    resolution: {integrity: sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==}
+    engines: {node: ^8.16.0 || ^10.6.0 || >=11.0.0}
+    os: [darwin]
+
   fsevents@2.3.3:
     resolution: {integrity: sha512-5xoDfX+fL7faATnagmWPpbFtwh/R77WmMMqqHGS65C3vvB0YHrgF+B1YmZ3441tMj5n63k0212XNoJwzlhffQw==}
     engines: {node: ^8.16.0 || ^10.6.0 || >=11.0.0}
@@ -4227,6 +4234,16 @@ packages:
     resolution: {integrity: sha512-NPE8TDbzl/3YQYY7CSS228s3g2ollTFnc+Qi3tqmqJp9Vg2ovUpixcJEo2HJScN2Ez+kEaal6y70c0ehqJBJeA==}
     engines: {node: '>=10'}
 
+  playwright-core@1.59.1:
+    resolution: {integrity: sha512-HBV/RJg81z5BiiZ9yPzIiClYV/QMsDCKUyogwH9p3MCP6IYjUFu/MActgYAvK0oWyV9NlwM3GLBjADyWgydVyg==}
+    engines: {node: '>=18'}
+    hasBin: true
+
+  playwright@1.59.1:
+    resolution: {integrity: sha512-C8oWjPR3F81yljW9o5OxcWzfh6avkVwDD2VYdwIGqTkl+OGFISgypqzfu7dOe4QNLL2aqcWBmI3PMtLIK233lw==}
+    engines: {node: '>=18'}
+    hasBin: true
+
   possible-typed-array-names@1.1.0:
     resolution: {integrity: sha512-/+5VFTchJDoVj3bhoqi6UeymcD00DAwb1nJwamzPvHEszJ4FpF6SNNbUbOS8yI56qHzdV8eK0qEfOSiodkTdxg==}
     engines: {node: '>= 0.4'}
@@ -6235,7 +6252,7 @@ snapshots:
       jsdom: 24.1.3
       jsonpath-plus: 10.4.0
       lodash: 4.18.1
-      material-react-table: 2.13.3(330725fe5432f245d076f0c0dda1a7a7)
+      material-react-table: 2.13.3(0078ddeddc9e779fa84c03996c1db10e)
       monaco-editor: 0.52.2
       msw: 2.4.9(typescript@5.6.2)
       msw-storybook-addon: 2.0.3(msw@2.4.9(typescript@5.6.3))
@@ -6633,6 +6650,10 @@ snapshots:
   '@pkgjs/parseargs@0.11.0':
     optional: true
 
+  '@playwright/test@1.59.1':
+    dependencies:
+      playwright: 1.59.1
+
   '@popperjs/core@2.11.8': {}
 
   '@reduxjs/toolkit@2.11.2(react-redux@9.2.0(@types/react@18.3.28)(react@18.3.1)(redux@5.0.1))(react@18.3.1)':
@@ -9191,6 +9212,9 @@ snapshots:
 
   fs.realpath@1.0.0: {}
 
+  fsevents@2.3.2:
+    optional: true
+
   fsevents@2.3.3:
     optional: true
 
@@ -9937,7 +9961,7 @@ snapshots:
       '@types/minimatch': 3.0.5
       minimatch: 3.1.5
 
-  material-react-table@2.13.3(330725fe5432f245d076f0c0dda1a7a7):
+  material-react-table@2.13.3(0078ddeddc9e779fa84c03996c1db10e):
     dependencies:
       '@emotion/react': 11.14.0(@types/react@18.3.28)(react@18.3.1)
       '@emotion/styled': 11.14.1(@emotion/react@11.14.0(@types/react@19.2.14)(react@18.3.1))(@types/react@18.3.28)(react@18.3.1)
@@ -10573,6 +10597,14 @@ snapshots:
     dependencies:
       find-up: 5.0.0
 
+  playwright-core@1.59.1: {}
+
+  playwright@1.59.1:
+    dependencies:
+      playwright-core: 1.59.1
+    optionalDependencies:
+      fsevents: 2.3.2
+
   possible-typed-array-names@1.1.0: {}
 
   postcss-modules-extract-imports@3.1.0(postcss@8.5.10):

scripts/deploy-e2e-headlamp.sh

@@ -0,0 +1,182 @@
+#!/usr/bin/env bash
+# deploy-e2e-headlamp.sh
+#
+# Deploys a stock Headlamp instance with the argocd plugin loaded via
+# a ConfigMap volume mount.
+#
+# Environment:
+#   E2E_NAMESPACE     — namespace (default: headlamp-dev)
+#   E2E_RELEASE       — release name prefix (default: headlamp-e2e)
+#   HEADLAMP_VERSION  — Headlamp image tag (default: latest)
+set -euo pipefail
+
+REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+DIST_DIR="$REPO_ROOT/dist"
+
+E2E_NAMESPACE="${E2E_NAMESPACE:-headlamp-dev}"
+E2E_RELEASE="${E2E_RELEASE:-headlamp-e2e}"
+HEADLAMP_VERSION="${HEADLAMP_VERSION:-latest}"
+
+if [ ! -d "$DIST_DIR" ]; then
+  echo "ERROR: dist/ not found. Run 'pnpm build' first." >&2
+  exit 1
+fi
+
+echo "Checking RBAC permissions in namespace '${E2E_NAMESPACE}'..."
+if ! kubectl auth can-i delete configmaps -n "$E2E_NAMESPACE" --quiet 2>/dev/null; then
+  echo "ERROR: Missing RBAC — cannot delete configmaps in namespace '${E2E_NAMESPACE}'." >&2
+  exit 1
+fi
+
+echo "=== E2E Headlamp Deployment ==="
+echo "  Image:     ghcr.io/headlamp-k8s/headlamp:${HEADLAMP_VERSION}"
+echo "  Namespace: $E2E_NAMESPACE"
+echo "  Release:   $E2E_RELEASE"
+
+echo ""
+echo "Creating ConfigMap with plugin files..."
+
+kubectl delete configmap headlamp-argocd-plugin \
+  -n "$E2E_NAMESPACE" --ignore-not-found
+
+kubectl create configmap headlamp-argocd-plugin \
+  -n "$E2E_NAMESPACE" \
+  --from-file="$DIST_DIR" \
+  --from-file=package.json="$REPO_ROOT/package.json"
+
+echo ""
+echo "Removing any existing E2E deployment (clean-start)..."
+kubectl delete deployment "${E2E_RELEASE}" -n "$E2E_NAMESPACE" --ignore-not-found --wait
+kubectl delete service "${E2E_RELEASE}" -n "$E2E_NAMESPACE" --ignore-not-found --wait
+kubectl delete serviceaccount "${E2E_RELEASE}" -n "$E2E_NAMESPACE" --ignore-not-found --wait
+
+echo ""
+echo "Deploying Headlamp E2E instance..."
+
+kubectl apply -f - <<EOF
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: ${E2E_RELEASE}
+  namespace: ${E2E_NAMESPACE}
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: ${E2E_RELEASE}
+  namespace: ${E2E_NAMESPACE}
+  labels:
+    app.kubernetes.io/name: headlamp
+    app.kubernetes.io/instance: ${E2E_RELEASE}
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: headlamp
+      app.kubernetes.io/instance: ${E2E_RELEASE}
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: headlamp
+        app.kubernetes.io/instance: ${E2E_RELEASE}
+    spec:
+      serviceAccountName: ${E2E_RELEASE}
+      automountServiceAccountToken: true
+      securityContext: {}
+      containers:
+        - name: headlamp
+          image: ghcr.io/headlamp-k8s/headlamp:${HEADLAMP_VERSION}
+          imagePullPolicy: IfNotPresent
+          securityContext:
+            runAsNonRoot: true
+            privileged: false
+            runAsUser: 100
+            runAsGroup: 101
+          args:
+            - "-in-cluster"
+            - "-in-cluster-context-name=main"
+            - "-plugins-dir=/headlamp/plugins"
+          ports:
+            - name: http
+              containerPort: 4466
+              protocol: TCP
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+            initialDelaySeconds: 5
+            periodSeconds: 5
+            failureThreshold: 6
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+            initialDelaySeconds: 10
+            periodSeconds: 10
+          volumeMounts:
+            - name: argocd-plugin
+              mountPath: /headlamp/plugins/headlamp-argocd
+              readOnly: true
+      volumes:
+        - name: argocd-plugin
+          configMap:
+            name: headlamp-argocd-plugin
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: ${E2E_RELEASE}
+  namespace: ${E2E_NAMESPACE}
+  labels:
+    app.kubernetes.io/name: headlamp
+    app.kubernetes.io/instance: ${E2E_RELEASE}
+spec:
+  type: ClusterIP
+  selector:
+    app.kubernetes.io/name: headlamp
+    app.kubernetes.io/instance: ${E2E_RELEASE}
+  ports:
+    - name: http
+      port: 80
+      targetPort: http
+      protocol: TCP
+EOF
+
+echo "Waiting for rollout..."
+kubectl rollout status "deployment/${E2E_RELEASE}" \
+  -n "$E2E_NAMESPACE" --timeout=120s
+
+SVC_URL="http://${E2E_RELEASE}.${E2E_NAMESPACE}.svc.cluster.local"
+
+echo ""
+echo "Waiting for ${SVC_URL} to be reachable..."
+ATTEMPTS=0
+MAX_ATTEMPTS=24
+until curl -sf --max-time 5 "${SVC_URL}" -o /dev/null 2>/dev/null; do
+  ATTEMPTS=$((ATTEMPTS + 1))
+  if [ "$ATTEMPTS" -ge "$MAX_ATTEMPTS" ]; then
+    echo "ERROR: ${SVC_URL} not reachable after $((MAX_ATTEMPTS * 5))s" >&2
+    exit 1
+  fi
+  echo "  [${ATTEMPTS}/${MAX_ATTEMPTS}] not yet reachable, retrying in 5s..."
+  sleep 5
+done
+echo ""
+echo "E2E Headlamp is ready at: ${SVC_URL}"
+
+echo ""
+echo "Creating service account token for E2E auth..."
+kubectl create serviceaccount headlamp-e2e-test \
+  -n "$E2E_NAMESPACE" --dry-run=client -o yaml | kubectl apply -f -
+
+TOKEN=$(kubectl create token headlamp-e2e-test -n "$E2E_NAMESPACE" --duration=1h 2>/dev/null || echo "")
+if [ -n "$TOKEN" ]; then
+  echo "HEADLAMP_URL=${SVC_URL}" > "$REPO_ROOT/.env.e2e"
+  echo "HEADLAMP_TOKEN=${TOKEN}" >> "$REPO_ROOT/.env.e2e"
+  echo "Wrote .env.e2e with HEADLAMP_URL and HEADLAMP_TOKEN"
+else
+  echo "  WARNING: Could not generate token."
+fi
+
+echo ""
+echo "E2E deployment complete."

scripts/teardown-e2e-headlamp.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+# teardown-e2e-headlamp.sh
+#
+# Tears down the dedicated E2E Headlamp instance.
+#
+# Environment:
+#   E2E_NAMESPACE  — namespace to clean up (default: headlamp-dev)
+#   E2E_RELEASE    — release name prefix (default: headlamp-e2e)
+set -euo pipefail
+
+REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+
+E2E_NAMESPACE="${E2E_NAMESPACE:-headlamp-dev}"
+E2E_RELEASE="${E2E_RELEASE:-headlamp-e2e}"
+
+echo "=== E2E Headlamp Teardown ==="
+echo "  Namespace: $E2E_NAMESPACE"
+echo "  Release:   $E2E_RELEASE"
+
+echo "Removing Headlamp Deployment, Service, and ServiceAccount..."
+kubectl delete deployment "${E2E_RELEASE}" -n "$E2E_NAMESPACE" --ignore-not-found
+kubectl delete service "${E2E_RELEASE}" -n "$E2E_NAMESPACE" --ignore-not-found
+kubectl delete serviceaccount "${E2E_RELEASE}" -n "$E2E_NAMESPACE" --ignore-not-found
+
+echo "Cleaning up ConfigMap..."
+kubectl delete configmap headlamp-argocd-plugin -n "$E2E_NAMESPACE" --ignore-not-found
+
+echo "Cleaning up test service account..."
+kubectl delete serviceaccount headlamp-e2e-test -n "$E2E_NAMESPACE" --ignore-not-found
+
+if [ -f "$REPO_ROOT/.env.e2e" ]; then
+  rm "$REPO_ROOT/.env.e2e"
+  echo "Removed .env.e2e"
+fi
+
+echo ""
+echo "E2E teardown complete."

src/__tests__/ApplicationDetail.test.tsx

@@ -0,0 +1,300 @@
+import { ApiProxy } from "@kinvolk/headlamp-plugin/lib";
+import { render, screen } from "@testing-library/react";
+import React from "react";
+import { MemoryRouter, Route } from "react-router-dom";
+import { describe, expect, it, vi } from "vitest";
+import ApplicationDetail from "../components/ApplicationDetail";
+
+// --- Pure function unit tests ---
+
+function formatTimestamp(iso: string): string {
+  try {
+    const date = new Date(iso);
+    if (isNaN(date.getTime())) return "—";
+    return date.toLocaleString();
+  } catch {
+    return "—";
+  }
+}
+
+function formatRevision(revision: string): string {
+  if (!revision) return "—";
+  if (revision.length <= 8) return revision;
+  return revision.slice(0, 8);
+}
+
+describe("formatTimestamp", () => {
+  it("returns formatted date for valid ISO string", () => {
+    const result = formatTimestamp("2024-06-01T10:00:00Z");
+    expect(result).not.toBe("—");
+  });
+
+  it("returns em dash for empty string", () => {
+    expect(formatTimestamp("")).toBe("—");
+  });
+
+  it("returns em dash for invalid date", () => {
+    expect(formatTimestamp("not-a-date")).toBe("—");
+  });
+});
+
+describe("formatRevision", () => {
+  it("returns em dash for empty string", () => {
+    expect(formatRevision("")).toBe("—");
+  });
+
+  it("returns revision as-is if 8 chars or fewer", () => {
+    expect(formatRevision("abc")).toBe("abc");
+    expect(formatRevision("12345678")).toBe("12345678");
+  });
+
+  it("truncates revision to 8 chars if longer", () => {
+    expect(formatRevision("1234567890abcdef")).toBe("12345678");
+  });
+});
+
+// --- Component smoke tests ---
+
+// Mock Headlamp lib
+vi.mock("@kinvolk/headlamp-plugin/lib", () => ({
+  ApiProxy: { request: vi.fn() },
+}));
+
+// Mock CommonComponents
+vi.mock("@kinvolk/headlamp-plugin/lib/CommonComponents", () => ({
+  SectionBox: ({
+    children,
+    title,
+  }: {
+    children?: React.ReactNode;
+    title?: string;
+  }) => (
+    <div data-testid="section-box" data-title={title}>
+      {children}
+    </div>
+  ),
+  SectionHeader: ({ title }: { title: string }) => (
+    <div data-testid="section-header">{title}</div>
+  ),
+  StatusLabel: ({
+    status,
+    children,
+  }: {
+    status: string;
+    children?: React.ReactNode;
+  }) => (
+    <span data-testid="status-label" data-status={status}>
+      {children}
+    </span>
+  ),
+  SimpleTable: ({
+    columns,
+    data,
+    emptyMessage,
+  }: {
+    columns: Array<{
+      label: string;
+      getter: (row: unknown) => React.ReactNode;
+    }>;
+    data: unknown[];
+    emptyMessage?: string;
+  }) =>
+    data.length === 0 ? (
+      <div data-testid="simple-table-empty">{emptyMessage}</div>
+    ) : (
+      <table data-testid="simple-table">
+        <thead>
+          <tr>
+            {columns.map((col) => (
+              <th key={col.label}>{col.label}</th>
+            ))}
+          </tr>
+        </thead>
+        <tbody>
+          {data.map((row, i) => (
+            <tr key={i}>
+              {columns.map((col) => (
+                <td key={col.label}>{col.getter(row)}</td>
+              ))}
+            </tr>
+          ))}
+        </tbody>
+      </table>
+    ),
+}));
+
+function renderWithRouter(
+  ui: React.ReactElement,
+  initialEntry = "/argocd/applications/test-app"
+) {
+  return render(
+    <MemoryRouter initialEntries={[initialEntry]}>
+      <Route path="/argocd/applications/:name">{ui}</Route>
+    </MemoryRouter>
+  );
+}
+
+describe("ApplicationDetail component", () => {
+  it("renders loading state initially", async () => {
+    vi.mocked(ApiProxy.request).mockImplementation(
+      () => new Promise(() => {}) // never resolves — keeps loading
+    );
+
+    renderWithRouter(<ApplicationDetail />);
+    expect(screen.getByTestId("application-detail-loading")).toHaveTextContent(
+      "Loading application details"
+    );
+  });
+
+  it("renders error state when API fails", async () => {
+    vi.mocked(ApiProxy.request).mockRejectedValue(
+      new Error("connection refused")
+    );
+
+    renderWithRouter(<ApplicationDetail />);
+
+    await vi.waitFor(() => {
+      expect(
+        screen.getByTestId("application-detail-error")
+      ).toBeInTheDocument();
+    });
+
+    // fetchApplication catches the error and returns null, which sets "Application not found"
+    expect(screen.getByText(/Application not found/)).toBeInTheDocument();
+  });
+
+  it("renders application detail when API succeeds", async () => {
+    const mockApp = {
+      metadata: { name: "test-app", namespace: "argocd" },
+      spec: {
+        project: "default",
+        sourceRepoURL: "https://github.com/example/repo",
+        targetRevision: "v1.0.0",
+      },
+      status: {
+        health: { status: "Healthy" },
+        sync: { status: "Synced" },
+        resources: [
+          {
+            kind: "Deployment",
+            name: "example-app",
+            namespace: "default",
+            health: { status: "Healthy" },
+            status: "Synced",
+          },
+        ],
+        history: [
+          {
+            dexKey: "2024-06-01T10:00:00Z",
+            id: 1,
+            revision: "v1.0.0",
+            triggeredBy: "admin",
+          },
+        ],
+      },
+    };
+
+    vi.mocked(ApiProxy.request).mockImplementation((path: string) => {
+      if (path.includes("/events")) {
+        return Promise.resolve({ items: [] });
+      }
+      return Promise.resolve(mockApp);
+    });
+
+    renderWithRouter(<ApplicationDetail />);
+
+    await vi.waitFor(() => {
+      expect(
+        screen.getByTestId("application-detail-header")
+      ).toBeInTheDocument();
+    });
+
+    expect(screen.getByText("ArgoCD — test-app")).toBeInTheDocument();
+  });
+
+  it("renders resource tree with resources", async () => {
+    const mockApp = {
+      metadata: { name: "test-app", namespace: "argocd" },
+      spec: {
+        project: "default",
+        sourceRepoURL: "https://github.com/example/repo",
+        targetRevision: "v1.0.0",
+      },
+      status: {
+        health: { status: "Healthy" },
+        sync: { status: "Synced" },
+        resources: [
+          {
+            kind: "Deployment",
+            name: "example-app",
+            namespace: "default",
+            health: { status: "Healthy" },
+            status: "Synced",
+          },
+          {
+            kind: "Service",
+            name: "example-svc",
+            namespace: "default",
+            health: { status: "Healthy" },
+            status: "Synced",
+          },
+        ],
+        history: [],
+      },
+    };
+
+    vi.mocked(ApiProxy.request).mockImplementation((path: string) => {
+      if (path.includes("/events")) {
+        return Promise.resolve({ items: [] });
+      }
+      return Promise.resolve(mockApp);
+    });
+
+    renderWithRouter(<ApplicationDetail />);
+
+    await vi.waitFor(() => {
+      expect(screen.getByTestId("simple-table")).toBeInTheDocument();
+    });
+
+    // Resource tree should show 2 data rows (plus 1 header row)
+    const tables = screen.getAllByTestId("simple-table");
+    expect(tables.length).toBeGreaterThan(0);
+  });
+
+  it("renders sync history", async () => {
+    const mockApp = {
+      metadata: { name: "test-app", namespace: "argocd" },
+      spec: {
+        project: "default",
+        sourceRepoURL: "https://github.com/example/repo",
+        targetRevision: "v1.0.0",
+      },
+      status: {
+        health: { status: "Healthy" },
+        sync: { status: "Synced" },
+        resources: [],
+        history: [
+          {
+            dexKey: "2024-06-01T10:00:00Z",
+            id: 1,
+            revision: "v1.0.0",
+            triggeredBy: "admin",
+          },
+        ],
+      },
+    };
+
+    vi.mocked(ApiProxy.request).mockImplementation((path: string) => {
+      if (path.includes("/events")) {
+        return Promise.resolve({ items: [] });
+      }
+      return Promise.resolve(mockApp);
+    });
+
+    renderWithRouter(<ApplicationDetail />);
+
+    await vi.waitFor(() => {
+      expect(screen.getByTestId("simple-table")).toBeInTheDocument();
+    });
+  });
+});

src/__tests__/PageInjections.test.tsx

@@ -0,0 +1,142 @@
+import { describe, expect, it } from "vitest";
+import type { ArgoCDApplication } from "../api/argocd";
+
+// --- Matching helpers (copied for unit testing) ---
+
+function appsForNamespace(
+  apps: ArgoCDApplication[],
+  namespace: string
+): ArgoCDApplication[] {
+  return apps.filter((app) => app.spec?.destination?.namespace === namespace);
+}
+
+function appsForDeployment(
+  apps: ArgoCDApplication[],
+  deploymentName: string
+): ArgoCDApplication[] {
+  return apps.filter((app) =>
+    (app.status?.resources ?? []).some(
+      (res) => res.kind === "Deployment" && res.name === deploymentName
+    )
+  );
+}
+
+// --- Fixture factory ---
+
+function makeApp(
+  overrides: Partial<ArgoCDApplication> = {}
+): ArgoCDApplication {
+  return {
+    metadata: { name: "test-app", namespace: "argocd" },
+    spec: { project: "default" },
+    status: {},
+    ...overrides,
+  } as ArgoCDApplication;
+}
+
+// --- appsForNamespace tests ---
+
+describe("appsForNamespace", () => {
+  it("returns apps whose destination.namespace matches", () => {
+    const apps = [
+      makeApp({
+        metadata: { name: "app-a", namespace: "argocd" },
+        spec: { project: "default", destination: { namespace: "web" } },
+      }),
+      makeApp({
+        metadata: { name: "app-b", namespace: "argocd" },
+        spec: { project: "default", destination: { namespace: "data" } },
+      }),
+    ];
+    expect(appsForNamespace(apps, "web").map((a) => a.metadata.name)).toEqual([
+      "app-a",
+    ]);
+  });
+
+  it("returns empty array when no match", () => {
+    const apps = [
+      makeApp({
+        metadata: { name: "app-a", namespace: "argocd" },
+        spec: { project: "default", destination: { namespace: "web" } },
+      }),
+    ];
+    expect(appsForNamespace(apps, "data")).toEqual([]);
+  });
+
+  it("returns empty array for empty app list", () => {
+    expect(appsForNamespace([], "web")).toEqual([]);
+  });
+
+  it("returns empty array when destination is undefined", () => {
+    const apps = [
+      makeApp({
+        metadata: { name: "app-a", namespace: "argocd" },
+        spec: { project: "default" },
+      }),
+    ];
+    expect(appsForNamespace(apps, "web")).toEqual([]);
+  });
+});
+
+// --- appsForDeployment tests ---
+
+describe("appsForDeployment", () => {
+  it("returns apps that manage the deployment via status.resources", () => {
+    const apps = [
+      makeApp({
+        metadata: { name: "app-a", namespace: "argocd" },
+        status: {
+          resources: [{ kind: "Deployment", name: "nginx", namespace: "web" }],
+        },
+      }),
+      makeApp({
+        metadata: { name: "app-b", namespace: "argocd" },
+        status: {
+          resources: [{ kind: "Service", name: "nginx", namespace: "web" }],
+        },
+      }),
+    ];
+    expect(
+      appsForDeployment(apps, "nginx").map((a) => a.metadata.name)
+    ).toEqual(["app-a"]);
+  });
+
+  it("returns empty array when no deployment resource matches", () => {
+    const apps = [
+      makeApp({
+        metadata: { name: "app-a", namespace: "argocd" },
+        status: {
+          resources: [{ kind: "Service", name: "nginx", namespace: "web" }],
+        },
+      }),
+    ];
+    expect(appsForDeployment(apps, "nginx")).toEqual([]);
+  });
+
+  it("returns empty array for empty app list", () => {
+    expect(appsForDeployment([], "nginx")).toEqual([]);
+  });
+
+  it("returns empty array when resources is undefined", () => {
+    const apps = [
+      makeApp({ metadata: { name: "app-a", namespace: "argocd" }, status: {} }),
+    ];
+    expect(appsForDeployment(apps, "nginx")).toEqual([]);
+  });
+
+  it("returns multiple apps that manage the same deployment", () => {
+    const apps = [
+      makeApp({
+        metadata: { name: "app-a", namespace: "argocd" },
+        status: { resources: [{ kind: "Deployment", name: "nginx" }] },
+      }),
+      makeApp({
+        metadata: { name: "app-b", namespace: "argocd" },
+        status: { resources: [{ kind: "Deployment", name: "nginx" }] },
+      }),
+    ];
+    expect(
+      appsForDeployment(apps, "nginx").map((a) => a.metadata.name)
+    ).toEqual(["app-a", "app-b"]);
+  });
+});

src/components/ApplicationDetail.tsx

@@ -0,0 +1,375 @@
+import { ApiProxy } from "@kinvolk/headlamp-plugin/lib";
+import {
+  SectionBox,
+  SectionHeader,
+  SimpleTable,
+  StatusLabel,
+} from "@kinvolk/headlamp-plugin/lib/CommonComponents";
+import React, { useEffect, useState } from "react";
+import { useParams } from "react-router-dom";
+import {
+  ArgoCDApplication,
+  ArgoCDHealthStatus,
+  ArgoCDSyncStatus,
+} from "../api/argocd";
+import { healthStatusToColor, syncStatusToColor } from "./ApplicationsList";
+
+// --- Types ---
+
+interface ResourceRow {
+  kind: string;
+  name: string;
+  namespace: string;
+  healthStatus: ArgoCDHealthStatus | "Unknown";
+  syncStatus: ArgoCDSyncStatus | "Unknown";
+}
+
+interface SyncHistoryRow {
+  revision: string;
+  deployedAt: string;
+  initiatedBy: string;
+  status: "Success" | "Failed" | "Unknown";
+}
+
+interface K8sEvent {
+  metadata: {
+    name: string;
+    namespace: string;
+    creationTimestamp: string;
+  };
+  type: string;
+  reason: string;
+  message: string;
+  involvedObject: {
+    name: string;
+    kind: string;
+  };
+  source: {
+    component: string;
+  };
+}
+
+// --- Helpers ---
+
+function healthStatusToLabel(status: ArgoCDHealthStatus | "Unknown"): string {
+  return status === "Unknown" ? "Unknown" : status;
+}
+
+function formatTimestamp(iso: string): string {
+  try {
+    const date = new Date(iso);
+    if (isNaN(date.getTime())) return "—";
+    return date.toLocaleString();
+  } catch {
+    return "—";
+  }
+}
+
+function formatRevision(revision: string): string {
+  if (!revision) return "—";
+  if (revision.length <= 8) return revision;
+  return revision.slice(0, 8);
+}
+
+// --- API ---
+
+const ARGOCD_API_PATH =
+  "/api/v1/namespaces/argocd/services/argocd-server/proxy/api/v1/applications";
+
+async function fetchApplication(
+  name: string
+): Promise<ArgoCDApplication | null> {
+  try {
+    const response = (await ApiProxy.request(
+      `${ARGOCD_API_PATH}/${name}`
+    )) as ArgoCDApplication;
+    return response;
+  } catch {
+    return null;
+  }
+}
+
+async function fetchApplicationEvents(
+  namespace: string,
+  appName: string
+): Promise<K8sEvent[]> {
+  try {
+    const fieldSelector = encodeURIComponent(`involvedObject.name=${appName}`);
+    const response = (await ApiProxy.request(
+      `/api/v1/namespaces/${namespace}/events?fieldSelector=${fieldSelector}`
+    )) as { items: K8sEvent[] };
+    return response.items ?? [];
+  } catch {
+    return [];
+  }
+}
+
+// --- Component ---
+
+export default function ApplicationDetail() {
+  const { name } = useParams<{ name: string }>();
+  const [application, setApplication] = useState<ArgoCDApplication | null>(
+    null
+  );
+  const [events, setEvents] = useState<K8sEvent[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    if (!name) return;
+
+    let cancelled = false;
+    setLoading(true);
+    setError(null);
+
+    fetchApplication(name)
+      .then((app) => {
+        if (cancelled) return;
+        if (!app) {
+          setError("Application not found");
+          setLoading(false);
+          return;
+        }
+        setApplication(app);
+        setLoading(false);
+
+        // Fetch events in parallel
+        const namespace = app.metadata?.namespace ?? "argocd";
+        fetchApplicationEvents(namespace, name).then((evts) => {
+          if (!cancelled) setEvents(evts);
+        });
+      })
+      .catch((err: unknown) => {
+        if (cancelled) return;
+        const message = err instanceof Error ? err.message : String(err);
+        setError(message);
+        setLoading(false);
+      });
+
+    return () => {
+      cancelled = true;
+    };
+  }, [name]);
+
+  if (loading) {
+    return (
+      <>
+        <SectionHeader title="Application Detail" />
+        <SectionBox>
+          <div data-testid="application-detail-loading">
+            Loading application details...
+          </div>
+        </SectionBox>
+      </>
+    );
+  }
+
+  if (error || !application) {
+    return (
+      <>
+        <SectionHeader title="Application Detail" />
+        <SectionBox>
+          <div data-testid="application-detail-error">
+            <StatusLabel status="error">
+              {error ?? "Application not found"}
+            </StatusLabel>
+          </div>
+        </SectionBox>
+      </>
+    );
+  }
+
+  const healthStatus =
+    (application.status?.health?.status as ArgoCDHealthStatus) ?? "Unknown";
+  const syncStatus =
+    (application.status?.sync?.status as ArgoCDSyncStatus) ?? "Unknown";
+  const targetRevision = application.spec?.targetRevision ?? "—";
+  const repoURL = application.spec?.sourceRepoURL ?? "—";
+  const project = application.spec?.project ?? "—";
+  const namespace = application.metadata?.namespace ?? "—";
+
+  // Build resource rows
+  const resourceRows: ResourceRow[] = (application.status?.resources ?? []).map(
+    (res) => ({
+      kind: res.kind ?? "Unknown",
+      name: res.name ?? "unknown",
+      namespace: res.namespace ?? "—",
+      healthStatus: (res.health?.status as ArgoCDHealthStatus) ?? "Unknown",
+      syncStatus: (res.status as ArgoCDSyncStatus) ?? "Unknown",
+    })
+  );
+
+  // Build sync history rows (last 10)
+  const historyRows: SyncHistoryRow[] = (application.status?.history ?? [])
+    .slice(-10)
+    .map((entry) => ({
+      revision: formatRevision(entry.revision),
+      deployedAt: formatTimestamp(entry.dexKey),
+      initiatedBy: entry.triggeredBy ?? "automated",
+      status: entry.id !== undefined ? "Success" : "Unknown",
+    }));
+
+  const resourceColumns = [
+    {
+      label: "Kind",
+      getter: (row: ResourceRow) => row.kind,
+    },
+    {
+      label: "Name",
+      getter: (row: ResourceRow) => row.name,
+    },
+    {
+      label: "Namespace",
+      getter: (row: ResourceRow) => row.namespace,
+    },
+    {
+      label: "Health",
+      getter: (row: ResourceRow) => (
+        <StatusLabel status={healthStatusToColor(row.healthStatus)}>
+          {healthStatusToLabel(row.healthStatus)}
+        </StatusLabel>
+      ),
+    },
+    {
+      label: "Sync",
+      getter: (row: ResourceRow) => (
+        <StatusLabel status={syncStatusToColor(row.syncStatus)}>
+          {row.syncStatus}
+        </StatusLabel>
+      ),
+    },
+  ];
+
+  const historyColumns = [
+    {
+      label: "Revision",
+      getter: (row: SyncHistoryRow) => row.revision,
+    },
+    {
+      label: "Deployed At",
+      getter: (row: SyncHistoryRow) => row.deployedAt,
+    },
+    {
+      label: "Initiated By",
+      getter: (row: SyncHistoryRow) => row.initiatedBy,
+    },
+    {
+      label: "Status",
+      getter: (row: SyncHistoryRow) => (
+        <StatusLabel status={row.status === "Success" ? "success" : "warning"}>
+          {row.status}
+        </StatusLabel>
+      ),
+    },
+  ];
+
+  return (
+    <>
+      <SectionHeader title={`ArgoCD — ${name}`} />
+      <SectionBox>
+        {/* Header metadata */}
+        <div data-testid="application-detail-header">
+          <StatusLabel status={healthStatusToColor(healthStatus)}>
+            {healthStatusToLabel(healthStatus)}
+          </StatusLabel>{" "}
+          <StatusLabel status={syncStatusToColor(syncStatus)}>
+            {syncStatus}
+          </StatusLabel>
+          <table>
+            <tbody>
+              <tr>
+                <td>
+                  <strong>Project:</strong>
+                </td>
+                <td>{project}</td>
+              </tr>
+              <tr>
+                <td>
+                  <strong>Namespace:</strong>
+                </td>
+                <td>{namespace}</td>
+              </tr>
+              <tr>
+                <td>
+                  <strong>Target Revision:</strong>
+                </td>
+                <td>{targetRevision}</td>
+              </tr>
+              <tr>
+                <td>
+                  <strong>Repository:</strong>
+                </td>
+                <td>{repoURL}</td>
+              </tr>
+            </tbody>
+          </table>
+        </div>
+      </SectionBox>
+
+      {/* Resource Tree */}
+      <SectionBox title="Resource Tree">
+        {resourceRows.length === 0 ? (
+          <div data-testid="resource-tree-empty">
+            No resources managed by this application.
+          </div>
+        ) : (
+          <SimpleTable
+            columns={resourceColumns}
+            data={resourceRows}
+            emptyMessage="No resources found."
+          />
+        )}
+      </SectionBox>
+
+      {/* Sync History */}
+      <SectionBox title="Sync History">
+        {historyRows.length === 0 ? (
+          <div data-testid="sync-history-empty">No sync history available.</div>
+        ) : (
+          <SimpleTable
+            columns={historyColumns}
+            data={historyRows}
+            emptyMessage="No sync history found."
+          />
+        )}
+      </SectionBox>
+
+      {/* Events */}
+      <SectionBox title="Events">
+        {events.length === 0 ? (
+          <div data-testid="events-empty">
+            No events found for this application.
+          </div>
+        ) : (
+          <SimpleTable
+            columns={[
+              {
+                label: "Type",
+                getter: (row: K8sEvent) => row.type,
+              },
+              {
+                label: "Reason",
+                getter: (row: K8sEvent) => row.reason,
+              },
+              {
+                label: "Message",
+                getter: (row: K8sEvent) => row.message,
+              },
+              {
+                label: "Source",
+                getter: (row: K8sEvent) => row.source?.component ?? "—",
+              },
+              {
+                label: "Age",
+                getter: (row: K8sEvent) =>
+                  formatTimestamp(row.metadata?.creationTimestamp ?? ""),
+              },
+            ]}
+            data={events}
+            emptyMessage="No events found."
+          />
+        )}
+      </SectionBox>
+    </>
+  );
+}

src/components/ApplicationsList.tsx

@@ -11,7 +11,7 @@ import InputLabel from "@mui/material/InputLabel";
 import MenuItem from "@mui/material/MenuItem";
 import Select from "@mui/material/Select";
 import React, { useEffect, useMemo, useState } from "react";
-import { useLocation } from "react-router-dom";
+import { Link, useLocation } from "react-router-dom";
 import { ArgoCDApplication, ArgoCDApplicationsList } from "../api/argocd";
 
 // --- Types ---
@@ -165,7 +165,9 @@ export default function ApplicationsList() {
   const columns = [
     {
       label: "App Name",
-      getter: (row: ApplicationRow) => row.name,
+      getter: (row: ApplicationRow) => (
+        <Link to={`/argocd/applications/${row.name}`}>{row.name}</Link>
+      ),
     },
     {
       label: "Namespace",

src/components/DeploymentArgoBadge.tsx

@@ -0,0 +1,101 @@
+import { ApiProxy } from "@kinvolk/headlamp-plugin/lib";
+import {
+  Link,
+  StatusLabel,
+} from "@kinvolk/headlamp-plugin/lib/CommonComponents";
+import React, { useEffect, useState } from "react";
+import { ArgoCDApplication, ArgoCDApplicationsList } from "../api/argocd";
+import { syncStatusToColor } from "./ApplicationsList";
+
+// --- API ---
+
+const ARGOCD_API_PATH =
+  "/api/v1/namespaces/argocd/services/argocd-server/proxy/api/v1/applications";
+
+async function fetchApplications(): Promise<ArgoCDApplicationsList> {
+  const response = (await ApiProxy.request(
+    ARGOCD_API_PATH
+  )) as ArgoCDApplicationsList;
+  return response;
+}
+
+// --- Matching helper ---
+
+/**
+ * Returns ArgoCD applications that manage the given Deployment by matching
+ * kind=Deployment and name in Application.status.resources[].
+ */
+export function appsForDeployment(
+  apps: ArgoCDApplication[],
+  deploymentName: string
+): ArgoCDApplication[] {
+  return apps.filter((app) =>
+    (app.status?.resources ?? []).some(
+      (res) => res.kind === "Deployment" && res.name === deploymentName
+    )
+  );
+}
+
+// --- Component ---
+
+interface DeploymentArgoBadgeProps {
+  deploymentName: string;
+}
+
+export default function DeploymentArgoBadge({
+  deploymentName,
+}: DeploymentArgoBadgeProps) {
+  const [apps, setApps] = useState<ArgoCDApplication[] | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    let cancelled = false;
+    fetchApplications()
+      .then((data) => {
+        if (cancelled) return;
+        const matched = appsForDeployment(data.items ?? [], deploymentName);
+        setApps(matched);
+        setLoading(false);
+      })
+      .catch((err: unknown) => {
+        if (cancelled) return;
+        setError(err instanceof Error ? err.message : String(err));
+        setLoading(false);
+      });
+    return () => {
+      cancelled = true;
+    };
+  }, [deploymentName]);
+
+  if (loading || error || !apps || apps.length === 0) {
+    return null; // Show nothing when no matching application
+  }
+
+  const app = apps[0]; // Show first matching app
+  const lastSynced = app.status?.history?.length
+    ? app.status.history[app.status.history.length - 1]?.dexKey
+    : null;
+  const lastSyncedStr = lastSynced
+    ? new Date(lastSynced).toLocaleString()
+    : "—";
+
+  return (
+    <span>
+      &nbsp;
+      <Link to={`/argocd/applications/${app.metadata.name}`}>
+        ArgoCD: {app.metadata.name}
+      </Link>
+      &nbsp;
+      <StatusLabel
+        status={syncStatusToColor(app.status?.sync?.status ?? "Unknown")}
+      >
+        {app.status?.sync?.status ?? "Unknown"}
+      </StatusLabel>
+      &nbsp;
+      <span style={{ fontSize: "0.85em", opacity: 0.8 }}>
+        Last sync: {lastSyncedStr}
+      </span>
+    </span>
+  );
+}

src/components/NamespaceArgoSection.tsx

@@ -0,0 +1,120 @@
+import { ApiProxy } from "@kinvolk/headlamp-plugin/lib";
+import {
+  Link,
+  SectionBox,
+  StatusLabel,
+} from "@kinvolk/headlamp-plugin/lib/CommonComponents";
+import React, { useEffect, useState } from "react";
+import { ArgoCDApplication, ArgoCDApplicationsList } from "../api/argocd";
+import {
+  healthStatusToColor,
+  healthStatusToLabel,
+  syncStatusToColor,
+} from "./ApplicationsList";
+
+// --- API ---
+
+const ARGOCD_API_PATH =
+  "/api/v1/namespaces/argocd/services/argocd-server/proxy/api/v1/applications";
+
+async function fetchApplications(): Promise<ArgoCDApplicationsList> {
+  const response = (await ApiProxy.request(
+    ARGOCD_API_PATH
+  )) as ArgoCDApplicationsList;
+  return response;
+}
+
+// --- Matching helper ---
+
+/**
+ * Returns ArgoCD applications whose spec.destination.namespace matches
+ * the given namespace name.
+ */
+export function appsForNamespace(
+  apps: ArgoCDApplication[],
+  namespace: string
+): ArgoCDApplication[] {
+  return apps.filter((app) => app.spec?.destination?.namespace === namespace);
+}
+
+// --- Component ---
+
+interface NamespaceArgoSectionProps {
+  namespaceName: string;
+}
+
+export default function NamespaceArgoSection({
+  namespaceName,
+}: NamespaceArgoSectionProps) {
+  const [apps, setApps] = useState<ArgoCDApplication[] | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    let cancelled = false;
+    fetchApplications()
+      .then((data) => {
+        if (cancelled) return;
+        const matched = appsForNamespace(data.items ?? [], namespaceName);
+        setApps(matched);
+        setLoading(false);
+      })
+      .catch((err: unknown) => {
+        if (cancelled) return;
+        setError(err instanceof Error ? err.message : String(err));
+        setLoading(false);
+      });
+    return () => {
+      cancelled = true;
+    };
+  }, [namespaceName]);
+
+  if (loading) {
+    return (
+      <SectionBox title="ArgoCD">
+        <StatusLabel status="warning">Loading...</StatusLabel>
+      </SectionBox>
+    );
+  }
+
+  if (error || !apps) {
+    return (
+      <SectionBox title="ArgoCD">
+        <StatusLabel status="error">ArgoCD unreachable</StatusLabel>
+      </SectionBox>
+    );
+  }
+
+  if (apps.length === 0) {
+    return null; // Show nothing when no matching application
+  }
+
+  return (
+    <SectionBox title="ArgoCD">
+      <StatusLabel status="success">{apps.length} application(s)</StatusLabel>
+      <ul style={{ paddingLeft: 20, margin: "8px 0" }}>
+        {apps.map((app) => (
+          <li key={app.metadata.name} style={{ marginBottom: 8 }}>
+            <Link to={`/argocd/applications/${app.metadata.name}`}>
+              {app.metadata.name}
+            </Link>
+            &nbsp;
+            <StatusLabel
+              status={healthStatusToColor(
+                app.status?.health?.status ?? "Unknown"
+              )}
+            >
+              {healthStatusToLabel(app.status?.health?.status ?? "Unknown")}
+            </StatusLabel>
+            &nbsp;
+            <StatusLabel
+              status={syncStatusToColor(app.status?.sync?.status ?? "Unknown")}
+            >
+              {app.status?.sync?.status ?? "Unknown"}
+            </StatusLabel>
+          </li>
+        ))}
+      </ul>
+    </SectionBox>
+  );
+}

src/components/PageInjections.tsx

@@ -0,0 +1,207 @@
+/**
+ * Page injection registrations for ArgoCD plugin.
+ * Registers detail view sections on Namespace and Deployment pages.
+ */
+import { ApiProxy } from "@kinvolk/headlamp-plugin/lib";
+import { KubeObject } from "@kinvolk/headlamp-plugin/lib/lib/k8s/KubeObject";
+import { registerDetailsViewSection } from "@kinvolk/headlamp-plugin/lib";
+import {
+  SectionBox,
+  StatusLabel,
+} from "@kinvolk/headlamp-plugin/lib/CommonComponents";
+import { Link } from "react-router-dom";
+import React, { useEffect, useState } from "react";
+import { ArgoCDApplication, ArgoCDApplicationsList } from "../api/argocd";
+import {
+  healthStatusToColor,
+  healthStatusToLabel,
+  syncStatusToColor,
+} from "./ApplicationsList";
+
+// --- API ---
+
+const ARGOCD_API_PATH =
+  "/api/v1/namespaces/argocd/services/argocd-server/proxy/api/v1/applications";
+
+async function fetchApplications(): Promise<ArgoCDApplicationsList> {
+  const response = (await ApiProxy.request(
+    ARGOCD_API_PATH
+  )) as ArgoCDApplicationsList;
+  return response;
+}
+
+// --- Namespace section ---
+
+function NamespaceArgoSection({ resource }: { resource: KubeObject }) {
+  const namespaceName = resource.metadata.name;
+  const [apps, setApps] = useState<ArgoCDApplication[] | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    let cancelled = false;
+    fetchApplications()
+      .then((data) => {
+        if (cancelled) return;
+        const matched = (data.items ?? []).filter(
+          (app) => app.spec?.destination?.namespace === namespaceName
+        );
+        setApps(matched);
+        setLoading(false);
+      })
+      .catch((err: unknown) => {
+        if (cancelled) return;
+        setError(err instanceof Error ? err.message : String(err));
+        setLoading(false);
+      });
+    return () => {
+      cancelled = true;
+    };
+  }, [namespaceName]);
+
+  if (loading) {
+    return (
+      <SectionBox title="ArgoCD">
+        <StatusLabel status="warning">Loading...</StatusLabel>
+      </SectionBox>
+    );
+  }
+
+  if (error || !apps) {
+    return (
+      <SectionBox title="ArgoCD">
+        <StatusLabel status="error">ArgoCD unreachable</StatusLabel>
+      </SectionBox>
+    );
+  }
+
+  if (apps.length === 0) {
+    return null;
+  }
+
+  return (
+    <SectionBox title="ArgoCD">
+      <StatusLabel status="success">{apps.length} application(s)</StatusLabel>
+      <ul style={{ paddingLeft: 20, margin: "8px 0" }}>
+        {apps.map((app) => (
+          <li key={app.metadata.name} style={{ marginBottom: 8 }}>
+            <Link to={`/argocd/applications/${app.metadata.name}`}>
+              {app.metadata.name}
+            </Link>
+            &nbsp;
+            <StatusLabel
+              status={healthStatusToColor(
+                (app.status?.health?.status as
+                  | "Healthy"
+                  | "Degraded"
+                  | "Progressing"
+                  | "Missing"
+                  | "Unknown") ?? "Unknown"
+              )}
+            >
+              {healthStatusToLabel(
+                (app.status?.health?.status as
+                  | "Healthy"
+                  | "Degraded"
+                  | "Progressing"
+                  | "Missing"
+                  | "Unknown") ?? "Unknown"
+              )}
+            </StatusLabel>
+            &nbsp;
+            <StatusLabel
+              status={syncStatusToColor(
+                (app.status?.sync?.status as
+                  | "Synced"
+                  | "OutOfSync"
+                  | "Unknown") ?? "Unknown"
+              )}
+            >
+              {app.status?.sync?.status ?? "Unknown"}
+            </StatusLabel>
+          </li>
+        ))}
+      </ul>
+    </SectionBox>
+  );
+}
+
+// --- Deployment badge ---
+
+function DeploymentArgoBadge({ resource }: { resource: KubeObject }) {
+  const deploymentName = resource.metadata.name;
+  const [apps, setApps] = useState<ArgoCDApplication[] | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    let cancelled = false;
+    fetchApplications()
+      .then((data) => {
+        if (cancelled) return;
+        const matched = (data.items ?? []).filter((app) =>
+          (app.status?.resources ?? []).some(
+            (res) => res.kind === "Deployment" && res.name === deploymentName
+          )
+        );
+        setApps(matched);
+        setLoading(false);
+      })
+      .catch((err: unknown) => {
+        if (cancelled) return;
+        setError(err instanceof Error ? err.message : String(err));
+        setLoading(false);
+      });
+    return () => {
+      cancelled = true;
+    };
+  }, [deploymentName]);
+
+  if (loading || error || !apps || apps.length === 0) {
+    return null;
+  }
+
+  const app = apps[0];
+  const lastSynced = app.status?.history?.length
+    ? app.status.history[app.status.history.length - 1]?.dexKey
+    : null;
+  const lastSyncedStr = lastSynced
+    ? new Date(lastSynced).toLocaleString()
+    : "—";
+
+  return (
+    <span>
+      &nbsp;
+      <Link to={`/argocd/applications/${app.metadata.name}`}>
+        ArgoCD: {app.metadata.name}
+      </Link>
+      &nbsp;
+      <StatusLabel
+        status={syncStatusToColor(
+          (app.status?.sync?.status as "Synced" | "OutOfSync" | "Unknown") ??
+            "Unknown"
+        )}
+      >
+        {app.status?.sync?.status ?? "Unknown"}
+      </StatusLabel>
+      &nbsp;
+      <span style={{ fontSize: "0.85em", opacity: 0.8 }}>
+        Last sync: {lastSyncedStr}
+      </span>
+    </span>
+  );
+}
+
+// --- Registration ---
+
+registerDetailsViewSection(({ resource }: { resource: KubeObject }) => {
+  if (resource.kind === "Namespace") {
+    return <NamespaceArgoSection resource={resource} />;
+  }
+
+  if (resource.kind === "Deployment") {
+    return <DeploymentArgoBadge resource={resource} />;
+  }
+
+  return null;
+});

src/index.tsx

@@ -7,7 +7,9 @@ import {
   StatusLabel,
 } from "@kinvolk/headlamp-plugin/lib/CommonComponents";
 import React from "react";
+import ApplicationDetail from "./components/ApplicationDetail";
 import ApplicationsList from "./components/ApplicationsList";
+import "./components/PageInjections"; // side-effect: registers detail view sections
 
 // --- Error boundary for plugin components ---
 
@@ -68,3 +70,14 @@ registerRoute({
     </ArgoCDErrorBoundary>
   ),
 });
+
+registerRoute({
+  path: "/argocd/applications/:name",
+  sidebar: "argocd-overview",
+  name: "argocd-application-detail",
+  component: () => (
+    <ArgoCDErrorBoundary>
+      <ApplicationDetail />
+    </ArgoCDErrorBoundary>
+  ),
+});