diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
deleted file mode 100644
index 6cd57d7..0000000
--- a/.gitea/workflows/ci.yml
+++ /dev/null
@@ -1,65 +0,0 @@
-name: CI
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-    branches: [main]
-
-jobs:
-  quality:
-    name: Typecheck + Tests
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Setup Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: '20'
-          cache: 'npm'
-
-      - name: Install dependencies
-        run: npm ci
-
-      - name: Typecheck (main + preload + shared)
-        run: npm run typecheck:node
-
-      - name: Typecheck (renderer)
-        run: npm run typecheck:web
-
-      - name: Run unit tests
-        run: npm run test:run
-
-  build:
-    name: Build (Windows)
-    runs-on: windows-latest
-    needs: quality
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Setup Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: '20'
-          cache: 'npm'
-
-      - name: Install dependencies
-        run: npm ci
-
-      - name: Build production bundle (no installer)
-        run: npm run build
-
-      - name: Smoke-test unpacked build
-        run: npm run dist:dir
-        env:
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Upload unpacked artifact
-        uses: actions/upload-artifact@v4
-        with:
-          name: exercise-reminder-unpacked
-          path: release/win-unpacked/
-          retention-days: 7
diff --git a/.gitea/workflows/release.yml b/.gitea/workflows/release.yml
deleted file mode 100644
index cfd33ad..0000000
--- a/.gitea/workflows/release.yml
+++ /dev/null
@@ -1,75 +0,0 @@
-name: Release
-
-on:
-  push:
-    tags:
-      - 'v*.*.*'
-
-jobs:
-  release:
-    name: Build installer + publish release
-    runs-on: windows-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Setup Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: '20'
-          cache: 'npm'
-
-      - name: Install dependencies
-        run: npm ci
-
-      - name: Verify version matches tag
-        shell: pwsh
-        run: |
-          $tag = "${{ gitea.ref_name }}"
-          $expected = $tag.TrimStart('v')
-          $actual = (Get-Content package.json | ConvertFrom-Json).version
-          if ($expected -ne $actual) {
-            Write-Error "Tag $tag does not match package.json version $actual"
-            exit 1
-          }
-          Write-Host "Version match: $actual"
-
-      - name: Typecheck
-        run: npm run typecheck
-
-      - name: Run unit tests
-        run: npm run test:run
-
-      - name: Build NSIS installer
-        run: npm run dist
-        env:
-          # electron-builder uses this when --publish flag is set; we publish
-          # to a Gitea release manually below to avoid hard-coupling.
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Generate release notes from commits
-        id: notes
-        shell: pwsh
-        run: |
-          $tag = "${{ gitea.ref_name }}"
-          $prev = git describe --tags --abbrev=0 "$tag^" 2>$null
-          if ($prev) {
-            $log = git log --pretty=format:"- %s" "$prev..$tag"
-          } else {
-            $log = git log --pretty=format:"- %s" "$tag"
-          }
-          $notes = "### Изменения`n`n$log`n`n---`n`nУстановщик ниже — запустить и следовать мастеру. Если приложение уже стояло — обновится поверх с сохранением настроек."
-          $encoded = $notes -replace "`r?`n", "%0A"
-          "notes=$encoded" | Out-File -FilePath $env:GITEA_OUTPUT -Append
-
-      - name: Create Gitea release with artifacts
-        uses: akkuman/gitea-release-action@v1
-        with:
-          server_url: ${{ gitea.server_url }}
-          token: ${{ secrets.GITEA_TOKEN }}
-          name: 'Exercise Reminder ${{ gitea.ref_name }}'
-          body: ${{ steps.notes.outputs.notes }}
-          files: |
-            release/Exercise-Reminder-Setup-*.exe
-            release/Exercise-Reminder-Setup-*.exe.blockmap
-            release/latest.yml
diff --git a/scripts/upload-release-assets.ps1 b/scripts/upload-release-assets.ps1
index 4f8dc2c..dc72a26 100644
--- a/scripts/upload-release-assets.ps1
+++ b/scripts/upload-release-assets.ps1
@@ -157,21 +157,66 @@ if ($curlCmd) {
   }
 }
 
+$maxRetries = 4
+$backoffs   = @(15, 45, 120, 300)  # seconds between attempts
+
 foreach ($asset in @($installer, $blockmap, $manifest)) {
   $name = Split-Path $asset -Leaf
   $size = (Get-Item $asset).Length
-  Write-Host ("Uploading {0} ({1:N1} MB)..." -f $name, ($size / 1MB)) -ForegroundColor Cyan
   $uri = "$apiBase/repos/$repoOwner/$repoName/releases/$($release.id)/assets?name=$([uri]::EscapeDataString($name))"
-  # -f: fail on HTTP errors; -s -S: silent but show errors; --data-binary @file
-  & $curl `
-    --fail-with-body `
-    --silent --show-error `
-    -H "Authorization: token $env:GITEA_TOKEN" `
-    -H "Content-Type: application/octet-stream" `
-    --data-binary "@$asset" `
-    $uri
-  if ($LASTEXITCODE -ne 0) {
-    Write-Error "Upload failed for $name (curl exit $LASTEXITCODE)"
+
+  $attempt = 0
+  $uploaded = $false
+  while (-not $uploaded -and $attempt -le $maxRetries) {
+    if ($attempt -gt 0) {
+      $wait = $backoffs[[Math]::Min($attempt - 1, $backoffs.Length - 1)]
+      Write-Host ("  Retrying in {0}s (attempt {1}/{2})..." -f $wait, ($attempt + 1), ($maxRetries + 1)) -ForegroundColor Yellow
+      Start-Sleep -Seconds $wait
+
+      # Re-check whether prior attempt actually succeeded server-side before
+      # 504-ing the client. If asset is already there, treat as success.
+      try {
+        $check = Invoke-RestMethod `
+          -Uri "$apiBase/repos/$repoOwner/$repoName/releases/$($release.id)/assets" `
+          -Method Get -Headers $headers
+        $existing = $check | Where-Object { $_.name -eq $name }
+        if ($existing -and $existing.size -eq $size) {
+          Write-Host "  Asset already present server-side ($($existing.size) bytes) — skipping retry." -ForegroundColor DarkGray
+          $uploaded = $true
+          break
+        }
+        # If asset is present but with wrong size (half-uploaded), delete first.
+        if ($existing) {
+          Write-Host "  Removing partial asset id=$($existing.id) ($($existing.size) bytes) before retry..." -ForegroundColor DarkGray
+          Invoke-RestMethod `
+            -Uri "$apiBase/repos/$repoOwner/$repoName/releases/$($release.id)/assets/$($existing.id)" `
+            -Method Delete -Headers $headers | Out-Null
+        }
+      } catch {
+        # If the list call itself fails, just proceed with the retry.
+      }
+    }
+
+    Write-Host ("Uploading {0} ({1:N1} MB)..." -f $name, ($size / 1MB)) -ForegroundColor Cyan
+    & $curl `
+      --fail-with-body `
+      --silent --show-error `
+      --connect-timeout 30 `
+      --max-time 900 `
+      -H "Authorization: token $env:GITEA_TOKEN" `
+      -H "Content-Type: application/octet-stream" `
+      --data-binary "@$asset" `
+      $uri
+    if ($LASTEXITCODE -eq 0) {
+      $uploaded = $true
+    } else {
+      Write-Host "  curl exit $LASTEXITCODE — will retry." -ForegroundColor Yellow
+      $attempt++
+    }
+  }
+
+  if (-not $uploaded) {
+    Write-Error "Upload failed for $name after $($maxRetries + 1) attempts."
     exit 1
   }
 }