feat: initial commit — tcb_devportal Next.js app

Includes Helm chart (tcb-devportal), Jenkinsfile with homelab CI pipeline,
and Next.js app source.

Jenkinsfile

@@ -0,0 +1,102 @@
+@Library('homelab') _
+
+import vn.fireflylab.pipeline.BranchStrategy
+
+// ── Stage functions ────────────────────────────────────────────────
+def executeInstall() {
+    stage('Install') {
+        container('node') { runNodeInstall() }
+    }
+}
+
+def executeUnitTest() {
+    stage('Unit Test') {
+        container('node') { runNodeTest(testCmd: 'run test:coverage') }
+    }
+}
+
+def executeScanCodeQuality() {
+    stage('Scan Code Quality') {
+        container('sonar') {
+            scanCodeQuality(projectKey: 'tcb_devportal')
+        }
+    }
+}
+
+def executeBuildPush() {
+    stage('Build & Push') {
+        container('docker') {
+            def tag = BranchStrategy.imageTag(env.BRANCH_NAME)
+            env.IMAGE_TAG = tag
+            dockerBuildPush(appName: 'tcb_devportal', tag: tag)
+        }
+    }
+}
+
+def executeBumpChart() {
+    stage('Bump Helm Chart') {
+        container('tools') {
+            bumpHelmChart(imageTag: env.IMAGE_TAG)
+            gitCommitPush(
+                files: ['manifest/helm/Chart.yaml', 'manifest/helm/values.yaml'],
+                message: "ci: bump tcb_devportal chart to ${env.IMAGE_TAG}"
+            )
+        }
+    }
+}
+
+// ── Pipeline ───────────────────────────────────────────────────────
+// PR-*          → install + test
+// feature/*     → install + test + scan + build + push
+// develop       → install + test + scan + build + push
+// main          → install + test + scan + build + push
+// release/x.y.z → install + test + scan + build + push
+// hotfix/*      → install + test + scan + build + push
+
+podTemplate(yaml: homelabK8sAgent(withTools: true, withSonar: true)) {
+    node(POD_LABEL) {
+        withEnv(['DOCKER_HOST=tcp://localhost:2375']) {
+            checkout scm
+
+            BranchStrategy.prStrategy(env.BRANCH_NAME) {
+                executeInstall()
+                executeUnitTest()
+            }
+
+            BranchStrategy.featureStrategy(env.BRANCH_NAME) {
+                executeInstall()
+                executeUnitTest()
+                executeScanCodeQuality()
+                executeBuildPush()
+            }
+
+            BranchStrategy.developStrategy(env.BRANCH_NAME) {
+                executeInstall()
+                executeUnitTest()
+                executeScanCodeQuality()
+                executeBuildPush()
+            }
+
+            BranchStrategy.mainStrategy(env.BRANCH_NAME) {
+                executeInstall()
+                executeUnitTest()
+                executeScanCodeQuality()
+                executeBuildPush()
+            }
+
+            BranchStrategy.releaseStrategy(env.BRANCH_NAME) {
+                executeInstall()
+                executeUnitTest()
+                executeScanCodeQuality()
+                executeBuildPush()
+            }
+
+            BranchStrategy.hotfixStrategy(env.BRANCH_NAME) {
+                executeInstall()
+                executeUnitTest()
+                executeScanCodeQuality()
+                executeBuildPush()
+            }
+        }
+    }
+}