diff --git a/.github/workflows/publish-nightly.yml b/.github/workflows/publish-nightly.yml
new file mode 100644
index 000000000..7e1c6ef29
--- /dev/null
+++ b/.github/workflows/publish-nightly.yml
@@ -0,0 +1,169 @@
+# Nightly builds published to Cloudflare R2 with date versioning (e.g. 1.0.0-nightly-20260205).
+# Required repo secrets: R2_ACCESS_KEY_ID, R2_SECRET_ACCESS_KEY (from R2 API token in Cloudflare dashboard).
+name: Publish Nightly
+
+on:
+    workflow_dispatch:
+        inputs:
+            version:
+                description: 'Semantic version number (e.g., 1.0.0) - nightly suffix will be added automatically'
+                required: false
+                type: string
+    schedule:
+        # Run at 3:00 AM PST daily (11:00 UTC; PST = UTC-8)
+        - cron: '0 11 * * *'
+
+jobs:
+    prepare:
+        runs-on: ubuntu-latest
+        outputs:
+            version: ${{ steps.version.outputs.version }}
+        steps:
+            - name: Checkout git repo
+              uses: actions/checkout@v1
+
+            - name: Install Node and PNPM
+              uses: pnpm/action-setup@v4.1.0
+              with:
+                  version: 9
+
+            - name: Install dependencies
+              run: pnpm install
+
+            - name: Set date-based nightly version
+              id: version
+              shell: pwsh
+              run: |
+                  $inputVersion = "${{ github.event.inputs.version }}"
+                  Write-Host "Input version: $inputVersion"
+
+                  if ($inputVersion -eq "" -or $inputVersion -eq "null") {
+                      # No input version provided (scheduled run or manual without input), auto-increment patch version
+                      Write-Host "No version provided, auto-incrementing patch version..."
+
+                      $currentVersion = (Get-Content package.json | ConvertFrom-Json).version
+                      Write-Host "Current version: $currentVersion"
+
+                      $cleanVersion = $currentVersion -replace '-.*$', ''
+                      $versionParts = $cleanVersion.Split('.')
+                      if ($versionParts.Length -ne 3) {
+                          Write-Error "Current version format is invalid: $cleanVersion"
+                          exit 1
+                      }
+
+                      $major = [int]$versionParts[0]
+                      $minor = [int]$versionParts[1]
+                      $patch = [int]$versionParts[2]
+                      $newPatch = $patch + 1
+                      $inputVersion = "$major.$minor.$newPatch"
+                      Write-Host "Auto-generated version: $inputVersion"
+                  } else {
+                      # Validate semantic version format (major.minor.patch)
+                      $versionPattern = '^\d+\.\d+\.\d+$'
+                      if ($inputVersion -notmatch $versionPattern) {
+                          Write-Error "Invalid version format. Expected semantic version (e.g., 1.0.0), got: $inputVersion"
+                          exit 1
+                      }
+                  }
+
+                  # Date in YYYYMMDD (PST / America/Los_Angeles)
+                  $pst = [TimeZoneInfo]::FindSystemTimeZoneById('America/Los_Angeles')
+                  $dateInPst = [TimeZoneInfo]::ConvertTimeFromUtc([DateTime]::UtcNow, $pst)
+                  $dateStr = $dateInPst.ToString("yyyyMMdd")
+                  $nightlyVersion = "$inputVersion-nightly-$dateStr"
+                  Write-Host "Nightly version: $nightlyVersion"
+
+                  # Update package.json
+                  $packageJson = Get-Content package.json | ConvertFrom-Json
+                  $packageJson.version = $nightlyVersion
+                  $packageJson | ConvertTo-Json -Depth 10 | Set-Content package.json
+
+                  echo "version=$nightlyVersion" >> $env:GITHUB_OUTPUT
+
+    cleanup:
+        needs: prepare
+        runs-on: ubuntu-latest
+        env:
+            AWS_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY_ID }}
+            AWS_SECRET_ACCESS_KEY: ${{ secrets.R2_SECRET_ACCESS_KEY }}
+            R2_ENDPOINT_URL: ${{ env.R2_ENDPOINT_URL }}
+        steps:
+            - name: Delete all objects in R2 bucket
+              run: |
+                  aws s3 rm s3://feishin-nightly --recursive --endpoint-url $R2_ENDPOINT_URL
+
+    publish:
+        needs: [prepare, cleanup]
+        runs-on: ${{ matrix.os }}
+        env:
+            AWS_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY_ID }}
+            AWS_SECRET_ACCESS_KEY: ${{ secrets.R2_SECRET_ACCESS_KEY }}
+
+        strategy:
+            matrix:
+                os: [windows-latest, macos-latest, ubuntu-latest]
+
+        steps:
+            - name: Checkout git repo
+              uses: actions/checkout@v1
+
+            - name: Install Node and PNPM
+              uses: pnpm/action-setup@v4.1.0
+              with:
+                  version: 9
+
+            - name: Install dependencies
+              run: pnpm install
+
+            - name: Set version from prepare job
+              shell: pwsh
+              run: |
+                  $version = "${{ needs.prepare.outputs.version }}"
+                  Write-Host "Setting version: $version"
+                  $packageJson = Get-Content package.json | ConvertFrom-Json
+                  $packageJson.version = $version
+                  $packageJson | ConvertTo-Json -Depth 10 | Set-Content package.json
+
+            - name: Build and Publish to R2 (Windows)
+              if: matrix.os == 'windows-latest'
+              uses: nick-invision/retry@v2.8.2
+              with:
+                  timeout_minutes: 30
+                  max_attempts: 3
+                  retry_on: error
+                  command: |
+                      pnpm run publish:win:nightly
+                  on_retry_command: pnpm cache delete
+
+            - name: Build and Publish to R2 (macOS)
+              if: matrix.os == 'macos-latest'
+              uses: nick-invision/retry@v2.8.2
+              with:
+                  timeout_minutes: 30
+                  max_attempts: 3
+                  retry_on: error
+                  command: |
+                      pnpm run publish:mac:nightly
+                  on_retry_command: pnpm cache delete
+
+            - name: Build and Publish to R2 (Linux)
+              if: matrix.os == 'ubuntu-latest'
+              uses: nick-invision/retry@v2.8.2
+              with:
+                  timeout_minutes: 30
+                  max_attempts: 3
+                  retry_on: error
+                  command: |
+                      pnpm run publish:linux:nightly
+                  on_retry_command: pnpm cache delete
+
+            - name: Build and Publish to R2 (Linux ARM64)
+              if: matrix.os == 'ubuntu-latest'
+              uses: nick-invision/retry@v2.8.2
+              with:
+                  timeout_minutes: 30
+                  max_attempts: 3
+                  retry_on: error
+                  command: |
+                      pnpm run publish:linux-arm64:nightly
+                  on_retry_command: pnpm cache delete
diff --git a/electron-builder-nightly.yml b/electron-builder-nightly.yml
new file mode 100644
index 000000000..4d4175ac3
--- /dev/null
+++ b/electron-builder-nightly.yml
@@ -0,0 +1,59 @@
+appId: org.jeffvli.feishin
+productName: Feishin
+artifactName: ${productName}-${version}-${os}-${arch}.${ext}
+electronVersion: 39.4.0
+directories:
+    buildResources: assets
+files:
+    - 'out/**/*'
+    - 'package.json'
+extraResources:
+    - assets/**
+asarUnpack:
+    - resources/**
+win:
+    target:
+        - zip
+        - nsis
+    icon: assets/icons/icon.png
+
+nsis:
+    allowToChangeInstallationDirectory: true
+    oneClick: false
+    shortcutName: ${productName}
+    uninstallDisplayName: ${productName}
+    createDesktopShortcut: always
+
+mac:
+    target:
+        target: default
+        arch:
+            - arm64
+            - x64
+    icon: assets/icons/icon.icns
+    type: distribution
+    hardenedRuntime: true
+    entitlements: assets/entitlements.mac.plist
+    entitlementsInherit: assets/entitlements.mac.plist
+    gatekeeperAssess: false
+    notarize: false
+
+dmg:
+    contents: [{ x: 130, y: 220 }, { x: 410, y: 220, type: link, path: /Applications }]
+
+linux:
+    target:
+        - AppImage
+        - deb
+        - tar.xz
+    category: AudioVideo;Audio;Player
+    icon: assets/icons/icon.png
+    artifactName: ${productName}-${os}-${arch}.${ext}
+
+npmRebuild: false
+
+publish:
+    provider: s3
+    bucket: feishin-nightly
+    channel: alpha
+    endpoint: https://065f090c64de2dc707dd70ac72db9669.r2.cloudflarestorage.com
diff --git a/package.json b/package.json
index fd223bd8f..15d7c5ea2 100644
--- a/package.json
+++ b/package.json
@@ -48,11 +48,15 @@
         "publish:linux": "pnpm run build && electron-builder --publish always --linux",
         "publish:linux-arm64": "pnpm run build && electron-builder --publish always --linux --arm64",
         "publish:linux-arm64:beta": "pnpm run build && electron-builder --config electron-builder-beta.yml --publish always --linux --arm64",
+        "publish:linux-arm64:nightly": "pnpm run build && electron-builder --config electron-builder-nightly.yml --publish always --linux --arm64",
         "publish:linux:beta": "pnpm run build && electron-builder --config electron-builder-beta.yml --publish always --linux",
+        "publish:linux:nightly": "pnpm run build && electron-builder --config electron-builder-nightly.yml --publish always --linux",
         "publish:mac": "pnpm run build && electron-builder --publish always --mac",
         "publish:mac:beta": "pnpm run build && electron-builder --config electron-builder-beta.yml --publish always --mac",
+        "publish:mac:nightly": "pnpm run build && electron-builder --config electron-builder-nightly.yml --publish always --mac",
         "publish:win": "pnpm run build && electron-builder --publish always --win",
         "publish:win:beta": "pnpm run build && electron-builder --config electron-builder-beta.yml --publish always --win",
+        "publish:win:nightly": "pnpm run build && electron-builder --config electron-builder-nightly.yml --publish always --win",
         "start": "electron-vite preview",
         "typecheck": "pnpm run typecheck:node && pnpm run typecheck:web",
         "typecheck:node": "tsc --noEmit -p tsconfig.node.json --composite false",