diff --git a/.github/workflows/build_all.yml b/.github/workflows/build_all.yml
index 2bf01a0f65..66ee9af643 100644
--- a/.github/workflows/build_all.yml
+++ b/.github/workflows/build_all.yml
@@ -55,7 +55,7 @@ jobs:
     if: ${{ !cancelled() && (github.event_name != 'schedule' || github.repository == 'OrcaSlicer/OrcaSlicer') }}
     uses: ./.github/workflows/build_check_cache.yml
     with:
-      os: ubuntu-24.04
+      os: ${{ vars.SELF_HOSTED && 'orca-lnx-server' || 'ubuntu-24.04' }}
       build-deps-only: ${{ inputs.build-deps-only || false }}
     secrets: inherit
   build_windows:
@@ -63,7 +63,7 @@ jobs:
     if: ${{ !cancelled() && (github.event_name != 'schedule' || github.repository == 'OrcaSlicer/OrcaSlicer') }}
     uses: ./.github/workflows/build_check_cache.yml
     with:
-      os: windows-latest
+      os: ${{ vars.SELF_HOSTED && 'orca-win-server' || 'windows-latest' }}
       build-deps-only: ${{ inputs.build-deps-only || false }}
       force-build: ${{ github.event_name == 'schedule' }}
     secrets: inherit
@@ -95,7 +95,7 @@ jobs:
     secrets: inherit
   unit_tests:
     name: Unit Tests
-    runs-on: ubuntu-24.04
+    runs-on: ${{ vars.SELF_HOSTED && 'orca-lnx-server' || 'ubuntu-24.04' }}
     needs: build_linux
     if: ${{ !cancelled() && success() }}
     steps:
@@ -107,6 +107,7 @@ jobs:
             scripts
             tests
       - name: Apt-Install Dependencies
+        if: ${{ !vars.SELF_HOSTED }}
         uses: ./.github/actions/apt-install-deps
       - name: Restore Test Artifact
         uses: actions/download-artifact@v7
@@ -133,6 +134,11 @@ jobs:
         uses: EnricoMi/publish-unit-test-result-action@v2
         with:
           files: "ctest_results.xml"
+      - name: Delete Test Artifact
+        if: success()
+        uses: geekyeggo/delete-artifact@v5
+        with:
+          name: ${{ github.sha }}-tests
   flatpak:
     name: "Flatpak"
     container:
@@ -152,8 +158,8 @@ jobs:
             runner: ubuntu-24.04
           - arch: aarch64
             runner: ubuntu-24.04-arm
-    # Don't run scheduled builds on forks:
-    if: ${{ !cancelled() && (github.event_name != 'schedule' || github.repository == 'OrcaSlicer/OrcaSlicer') }}
+    # Don't run scheduled builds on forks; skip entirely on self-hosted runners
+    if: ${{ !cancelled() && !vars.SELF_HOSTED && (github.event_name != 'schedule' || github.repository == 'OrcaSlicer/OrcaSlicer') }}
     runs-on: ${{ matrix.variant.runner }}
     env:
       date:
diff --git a/.github/workflows/build_check_cache.yml b/.github/workflows/build_check_cache.yml
index cbed96824b..1e94e3e544 100644
--- a/.github/workflows/build_check_cache.yml
+++ b/.github/workflows/build_check_cache.yml
@@ -30,16 +30,16 @@ jobs:
         with:
           lfs: 'true'
         
-      - name: set outputs
-        id: set_outputs
-        env:
-          # Keep macOS cache keys and paths architecture-specific.
-          cache-os: ${{ contains(inputs.os, 'macos') && format('macos-{0}', inputs.arch) || inputs.os }}
-          dep-folder-name: ${{ contains(inputs.os, 'macos') && format('/{0}', inputs.arch) || '/OrcaSlicer_dep' }}
-          output-cmd: ${{ inputs.os == 'windows-latest' && '$env:GITHUB_OUTPUT' || '"$GITHUB_OUTPUT"'}}
-        run: |
-          echo cache-key=${{ env.cache-os }}-cache-orcaslicer_deps-build-${{ hashFiles('deps/**') }} >> ${{ env.output-cmd }}
-          echo cache-path=${{ github.workspace }}/deps/build${{ env.dep-folder-name }} >> ${{ env.output-cmd }}
+      - name: set outputs
+        id: set_outputs
+        env:
+          # Keep macOS cache keys and paths architecture-specific.
+          cache-os: ${{ runner.os == 'macOS' && format('macos-{0}', inputs.arch) || (runner.os == 'Windows' && 'windows' || 'linux-clang') }}
+          dep-folder-name: ${{ runner.os == 'macOS' && format('/{0}', inputs.arch) || '/OrcaSlicer_dep' }}
+          output-cmd: ${{ runner.os == 'Windows' && '$env:GITHUB_OUTPUT' || '"$GITHUB_OUTPUT"'}}
+        run: |
+          echo cache-key=${{ env.cache-os }}-cache-orcaslicer_deps-build-${{ hashFiles('deps/**') }} >> ${{ env.output-cmd }}
+          echo cache-path=${{ github.workspace }}/deps/build${{ env.dep-folder-name }} >> ${{ env.output-cmd }}
             
       - name: load cache
         id: cache_deps
diff --git a/.github/workflows/build_deps.yml b/.github/workflows/build_deps.yml
index b43e71e535..e025ad6ad8 100644
--- a/.github/workflows/build_deps.yml
+++ b/.github/workflows/build_deps.yml
@@ -51,32 +51,34 @@ jobs:
           useCloudCache: true
 
       - name: setup dev on Windows
-        if: inputs.os == 'windows-latest'
+        if: runner.os == 'Windows'
         uses: microsoft/setup-msbuild@v2
 
       - name: Get the date on Ubuntu and macOS
-        if: inputs.os != 'windows-latest'
+        if: runner.os != 'Windows'
         run: echo "date=$(date +'%Y%m%d')" >> $GITHUB_ENV
         shell: bash
 
       - name: Get the date on Windows
-        if: inputs.os == 'windows-latest'
+        if: runner.os == 'Windows'
         run: echo "date=$(Get-Date -Format 'yyyyMMdd')" | Out-File -Append -FilePath $env:GITHUB_ENV -Encoding utf8
         shell: pwsh
 
 
       # Build Dependencies
       - name: Build on Windows
-        if: inputs.os == 'windows-latest'
+        if: runner.os == 'Windows'
         working-directory: ${{ github.workspace }}
         run: |
-            choco install strawberryperl
+            if (-not "${{ vars.SELF_HOSTED }}") {
+              choco install strawberryperl
+            }
             .\build_release_vs.bat deps
             .\build_release_vs.bat pack
-            cd ${{ github.workspace }}/deps/build
+        shell: pwsh
 
       - name: Build on Mac ${{ inputs.arch }}
-        if: contains(inputs.os, 'macos')
+        if: runner.os == 'macOS'
         working-directory: ${{ github.workspace }}
         run: |
             if [ -z "${{ vars.SELF_HOSTED }}" ]; then
@@ -88,42 +90,42 @@ jobs:
 
 
       - name: Apt-Install Dependencies
-        if: inputs.os == 'ubuntu-24.04'
+        if: runner.os == 'Linux' && !vars.SELF_HOSTED
         uses: ./.github/actions/apt-install-deps
 
       - name: Build on Ubuntu
-        if: inputs.os == 'ubuntu-20.04' || inputs.os == 'ubuntu-24.04'
+        if: runner.os == 'Linux'
         working-directory: ${{ github.workspace }}
         run: |
             mkdir -p ${{ github.workspace }}/deps/build/destdir
-            ./build_linux.sh -dr
+            ./build_linux.sh -drlL
             cd deps/build
             tar -czvf OrcaSlicer_dep_ubuntu_$(date +"%Y%m%d").tar.gz destdir
 
 
       # Upload Artifacts
       # - name: Upload Mac ${{ inputs.arch }} artifacts
-      #   if: contains(inputs.os, 'macos')
+      #   if: runner.os == 'macOS'
       #   uses: actions/upload-artifact@v6
       #   with:
       #     name: OrcaSlicer_dep_mac_${{ env.date }}
       #     path: ${{ github.workspace }}/deps/build/OrcaSlicer_dep*.tar.gz
 
-      - name: Upload Windows artifacts
-        if: inputs.os == 'windows-latest'
-        uses: actions/upload-artifact@v6
-        with:
-          name: OrcaSlicer_dep_win64_${{ env.date }}
-          path: ${{ github.workspace }}/deps/build/OrcaSlicer_dep*.zip
+      # - name: Upload Windows artifacts
+      #   if: runner.os == 'Windows'
+      #   uses: actions/upload-artifact@v6
+      #   with:
+      #     name: OrcaSlicer_dep_win64_${{ env.date }}
+      #     path: ${{ github.workspace }}/deps/build/OrcaSlicer_dep*.zip
 
-      - name: Upload Ubuntu artifacts
-        if: ${{ ! env.ACT && inputs.os == 'ubuntu-20.04' || inputs.os == 'ubuntu-24.04' }}
-        env:
-          ubuntu-ver: ${{ (inputs.os == 'ubuntu-20.04' && '2004') || (inputs.os == 'ubuntu-24.04' && '2404') || '' }}
-        uses: actions/upload-artifact@v6
-        with:
-          name: OrcaSlicer_dep_ubuntu_${{ env.ubuntu-ver }}_${{ env.date }}
-          path: ${{ github.workspace }}/deps/build/OrcaSlicer_dep_ubuntu_*.tar.gz
+      # - name: Upload Ubuntu artifacts
+      #   if: runner.os == 'Linux' && !env.ACT
+      #   env:
+      #     ubuntu-ver: '2404'
+      #   uses: actions/upload-artifact@v6
+      #   with:
+      #     name: OrcaSlicer_dep_ubuntu_${{ env.ubuntu-ver }}_${{ env.date }}
+      #     path: ${{ github.workspace }}/deps/build/OrcaSlicer_dep_ubuntu_*.tar.gz
 
   build_orca:
     name: Build OrcaSlicer
diff --git a/.github/workflows/build_orca.yml b/.github/workflows/build_orca.yml
index ac85a0805b..cb28b23311 100644
--- a/.github/workflows/build_orca.yml
+++ b/.github/workflows/build_orca.yml
@@ -26,6 +26,8 @@ jobs:
       date:
       ver:
       ver_pure:
+      ubuntu-ver: '2404'
+      ubuntu-ver-str: '_Ubuntu2404'
       ORCA_UPDATER_SIG_KEY: ${{ secrets.ORCA_UPDATER_SIG_KEY }}
 
     steps:
@@ -35,7 +37,7 @@ jobs:
           lfs: 'true'
 
       - name: load cached deps
-        if: ${{ !(contains(inputs.os, 'macos') && inputs.macos-combine-only) }}
+        if: ${{ !(runner.os == 'macOS' && inputs.macos-combine-only) }}
         uses: actions/cache@v5
         with:
           path: ${{ inputs.cache-path }}
@@ -49,7 +51,7 @@ jobs:
           useCloudCache: true
 
       - name: Get the version and date on Ubuntu and macOS
-        if: inputs.os != 'windows-latest'
+        if: runner.os != 'Windows'
         run: |
           ver_pure=$(grep 'set(SoftFever_VERSION' version.inc | cut -d '"' -f2)
           if [[ "${{ github.event_name }}" == "pull_request" ]]; then
@@ -66,7 +68,7 @@ jobs:
         shell: bash
 
       - name: Get the version and date on Windows
-        if: inputs.os == 'windows-latest'
+        if: runner.os == 'Windows'
         run: |
           $date = Get-Date -Format 'yyyyMMdd'
           $ref = "${{ github.ref }}"
@@ -93,7 +95,7 @@ jobs:
 
 #   Mac
       - name: Install tools mac
-        if: contains(inputs.os, 'macos') && !inputs.macos-combine-only
+        if: runner.os == 'macOS' && !inputs.macos-combine-only
         run: |
           if [ -z "${{ vars.SELF_HOSTED }}" ]; then
             brew install libtool
@@ -102,7 +104,7 @@ jobs:
           mkdir -p ${{ github.workspace }}/deps/build/${{ inputs.arch }}
 
       - name: Free disk space
-        if: contains(inputs.os, 'macos') && !inputs.macos-combine-only && !vars.SELF_HOSTED
+        if: runner.os == 'macOS' && !inputs.macos-combine-only && !vars.SELF_HOSTED
         run: |
           df -hI /dev/disk3s1s1
           sudo find /Applications -maxdepth 1 -type d -name "Xcode_*.app" ! -name "Xcode_15.4.app" -exec rm -rf {} +
@@ -110,56 +112,49 @@ jobs:
           df -hI /dev/disk3s1s1
 
       - name: Build slicer mac
-        if: contains(inputs.os, 'macos') && !inputs.macos-combine-only
+        if: runner.os == 'macOS' && !inputs.macos-combine-only
         working-directory: ${{ github.workspace }}
         run: |
           ./build_release_macos.sh -s -n -x ${{ !vars.SELF_HOSTED && '-1' || '' }} -a ${{ inputs.arch }} -t 10.15
 
       - name: Pack macOS app bundle ${{ inputs.arch }}
-        if: contains(inputs.os, 'macos') && !inputs.macos-combine-only
+        if: runner.os == 'macOS' && !inputs.macos-combine-only
         working-directory: ${{ github.workspace }}
         run: |
           tar -czvf OrcaSlicer_Mac_bundle_${{ inputs.arch }}_${{ github.sha }}.tar.gz -C build/${{ inputs.arch }} OrcaSlicer
 
       - name: Upload macOS app bundle ${{ inputs.arch }}
-        if: contains(inputs.os, 'macos') && !inputs.macos-combine-only
+        if: runner.os == 'macOS' && !inputs.macos-combine-only
         uses: actions/upload-artifact@v6
         with:
           name: OrcaSlicer_Mac_bundle_${{ inputs.arch }}_${{ github.sha }}
           path: ${{ github.workspace }}/OrcaSlicer_Mac_bundle_${{ inputs.arch }}_${{ github.sha }}.tar.gz
 
-      - name: Download macOS arm64 app bundle
-        if: contains(inputs.os, 'macos') && inputs.macos-combine-only
+      - name: Download macOS app bundles
+        if: runner.os == 'macOS' && inputs.macos-combine-only
         uses: actions/download-artifact@v7
         with:
-          name: OrcaSlicer_Mac_bundle_arm64_${{ github.sha }}
-          path: ${{ github.workspace }}/mac_bundles/arm64
-
-      - name: Download macOS x86_64 app bundle
-        if: contains(inputs.os, 'macos') && inputs.macos-combine-only
-        uses: actions/download-artifact@v7
-        with:
-          name: OrcaSlicer_Mac_bundle_x86_64_${{ github.sha }}
-          path: ${{ github.workspace }}/mac_bundles/x86_64
+          pattern: OrcaSlicer_Mac_bundle_*_${{ github.sha }}
+          path: ${{ github.workspace }}/mac_bundles
 
       - name: Extract macOS app bundles
-        if: contains(inputs.os, 'macos') && inputs.macos-combine-only
+        if: runner.os == 'macOS' && inputs.macos-combine-only
         working-directory: ${{ github.workspace }}
         run: |
           mkdir -p build/arm64 build/x86_64
-          arm_bundle=$(find "${{ github.workspace }}/mac_bundles/arm64" -name '*.tar.gz' -print -quit)
-          x86_bundle=$(find "${{ github.workspace }}/mac_bundles/x86_64" -name '*.tar.gz' -print -quit)
+          arm_bundle=$(find "${{ github.workspace }}/mac_bundles/OrcaSlicer_Mac_bundle_arm64_${{ github.sha }}" -name '*.tar.gz' -print -quit)
+          x86_bundle=$(find "${{ github.workspace }}/mac_bundles/OrcaSlicer_Mac_bundle_x86_64_${{ github.sha }}" -name '*.tar.gz' -print -quit)
           tar -xzvf "$arm_bundle" -C "${{ github.workspace }}/build/arm64"
           tar -xzvf "$x86_bundle" -C "${{ github.workspace }}/build/x86_64"
 
       - name: Build universal mac app bundle
-        if: contains(inputs.os, 'macos') && inputs.macos-combine-only
+        if: runner.os == 'macOS' && inputs.macos-combine-only
         working-directory: ${{ github.workspace }}
         run: |
           ./build_release_macos.sh -u -x ${{ !vars.SELF_HOSTED && '-1' || '' }} -a universal -t 10.15
 
       - name: Delete intermediate per-arch artifacts
-        if: contains(inputs.os, 'macos') && inputs.macos-combine-only
+        if: runner.os == 'macOS' && inputs.macos-combine-only
         uses: geekyeggo/delete-artifact@v5
         with:
           name: |
@@ -168,7 +163,7 @@ jobs:
 
  # Thanks to RaySajuuk, it's working now
       - name: Sign app and notary
-        if: github.repository == 'OrcaSlicer/OrcaSlicer' && (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/heads/release/')) && contains(inputs.os, 'macos') && inputs.macos-combine-only
+        if: github.repository == 'OrcaSlicer/OrcaSlicer' && (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/heads/release/')) && runner.os == 'macOS' && inputs.macos-combine-only
         working-directory: ${{ github.workspace }}
         env:
           BUILD_CERTIFICATE_BASE64: ${{ secrets.BUILD_CERTIFICATE_BASE64 }}
@@ -222,7 +217,7 @@ jobs:
           fi
 
       - name: Create DMG without notary
-        if: github.ref != 'refs/heads/main' && contains(inputs.os, 'macos') && inputs.macos-combine-only
+        if: github.ref != 'refs/heads/main' && runner.os == 'macOS' && inputs.macos-combine-only
         working-directory: ${{ github.workspace }}
         run: |
           mkdir -p ${{ github.workspace }}/build/universal/OrcaSlicer_dmg
@@ -241,14 +236,14 @@ jobs:
           fi
 
       - name: Upload artifacts mac
-        if: contains(inputs.os, 'macos') && inputs.macos-combine-only
+        if: runner.os == 'macOS' && inputs.macos-combine-only
         uses: actions/upload-artifact@v6
         with:
           name: OrcaSlicer_Mac_universal_${{ env.ver }}
           path: ${{ github.workspace }}/OrcaSlicer_Mac_universal_${{ env.ver }}.dmg
 
       - name: Upload OrcaSlicer_profile_validator DMG mac
-        if: contains(inputs.os, 'macos') && inputs.macos-combine-only
+        if: runner.os == 'macOS' && inputs.macos-combine-only && !vars.SELF_HOSTED
         uses: actions/upload-artifact@v6
         with:
           name: OrcaSlicer_profile_validator_Mac_universal_DMG_${{ env.ver }}
@@ -256,7 +251,7 @@ jobs:
           if-no-files-found: ignore
 
       - name: Deploy Mac release
-        if: github.repository == 'OrcaSlicer/OrcaSlicer' && github.ref == 'refs/heads/main' && contains(inputs.os, 'macos') && inputs.macos-combine-only
+        if: github.repository == 'OrcaSlicer/OrcaSlicer' && github.ref == 'refs/heads/main' && runner.os == 'macOS' && inputs.macos-combine-only && !vars.SELF_HOSTED
         uses: WebFreak001/deploy-nightly@v3.2.0
         with:
           upload_url: https://uploads.github.com/repos/OrcaSlicer/OrcaSlicer/releases/137995723/assets{?name,label}
@@ -267,7 +262,7 @@ jobs:
           max_releases: 1 # optional, if there are more releases than this matching the asset_name, the oldest ones are going to be deleted
 
       - name: Deploy Mac OrcaSlicer_profile_validator DMG release
-        if: github.repository == 'OrcaSlicer/OrcaSlicer' && github.ref == 'refs/heads/main' && contains(inputs.os, 'macos') && inputs.macos-combine-only
+        if: github.repository == 'OrcaSlicer/OrcaSlicer' && github.ref == 'refs/heads/main' && runner.os == 'macOS' && inputs.macos-combine-only && !vars.SELF_HOSTED
         uses: WebFreak001/deploy-nightly@v3.2.0
         with:
           upload_url: https://uploads.github.com/repos/OrcaSlicer/OrcaSlicer/releases/137995723/assets{?name,label}
@@ -279,17 +274,17 @@ jobs:
 
 # Windows
       - name: setup MSVC
-        if: inputs.os == 'windows-latest'
+        if: runner.os == 'Windows'
         uses: microsoft/setup-msbuild@v2
 
       - name: Install nsis
-        if: inputs.os == 'windows-latest'
+        if: runner.os == 'Windows' && !vars.SELF_HOSTED
         run: |
           dir "C:/Program Files (x86)/Windows Kits/10/Include"
           choco install nsis
 
       - name: Build slicer Win
-        if: inputs.os == 'windows-latest'
+        if: runner.os == 'Windows'
         working-directory: ${{ github.workspace }}
         env:
           WindowsSdkDir: 'C:\Program Files (x86)\Windows Kits\10\'
@@ -297,53 +292,53 @@ jobs:
         run: .\build_release_vs.bat slicer
 
       - name: Create installer Win
-        if: inputs.os == 'windows-latest'
+        if: runner.os == 'Windows' && !vars.SELF_HOSTED
         working-directory: ${{ github.workspace }}/build
         run: |
           cpack -G NSIS
 
       - name: Pack app
-        if: inputs.os == 'windows-latest'
+        if: runner.os == 'Windows'
         working-directory: ${{ github.workspace }}/build
         shell: cmd
         run: '"C:/Program Files/7-Zip/7z.exe" a -tzip OrcaSlicer_Windows_${{ env.ver }}_portable.zip ${{ github.workspace }}/build/OrcaSlicer'
 
       - name: Pack PDB
-        if: inputs.os == 'windows-latest'
+        if: runner.os == 'Windows' && !vars.SELF_HOSTED
         working-directory: ${{ github.workspace }}/build/src/Release
         shell: cmd
         run: '"C:/Program Files/7-Zip/7z.exe" a -m0=lzma2 -mx9 Debug_PDB_${{ env.ver }}_for_developers_only.7z  *.pdb'
 
       - name: Upload artifacts Win zip
-        if: inputs.os == 'windows-latest'
+        if: runner.os == 'Windows'
         uses: actions/upload-artifact@v6
         with:
           name: OrcaSlicer_Windows_${{ env.ver }}_portable
           path: ${{ github.workspace }}/build/OrcaSlicer
 
       - name: Upload artifacts Win installer
-        if: inputs.os == 'windows-latest'
+        if: runner.os == 'Windows' && !vars.SELF_HOSTED
         uses: actions/upload-artifact@v6
         with:
           name: OrcaSlicer_Windows_${{ env.ver }}
           path: ${{ github.workspace }}/build/OrcaSlicer*.exe
 
       - name: Upload artifacts Win PDB
-        if: inputs.os == 'windows-latest'
+        if: runner.os == 'Windows' && !vars.SELF_HOSTED
         uses: actions/upload-artifact@v6
         with:
           name: PDB
           path: ${{ github.workspace }}/build/src/Release/Debug_PDB_${{ env.ver }}_for_developers_only.7z
 
       - name: Upload OrcaSlicer_profile_validator Win
-        if: inputs.os == 'windows-latest'
+        if: runner.os == 'Windows' && !vars.SELF_HOSTED
         uses: actions/upload-artifact@v6
         with:
           name: OrcaSlicer_profile_validator_Windows_${{ env.ver }}
           path: ${{ github.workspace }}/build/src/Release/OrcaSlicer_profile_validator.exe
 
       - name: Deploy Windows release portable
-        if: github.repository == 'OrcaSlicer/OrcaSlicer' && github.ref == 'refs/heads/main' && inputs.os == 'windows-latest'
+        if: github.repository == 'OrcaSlicer/OrcaSlicer' && github.ref == 'refs/heads/main' && runner.os == 'Windows' && !vars.SELF_HOSTED
         uses: WebFreak001/deploy-nightly@v3.2.0
         with:
           upload_url: https://uploads.github.com/repos/OrcaSlicer/OrcaSlicer/releases/137995723/assets{?name,label}
@@ -354,7 +349,7 @@ jobs:
           max_releases: 1
 
       - name: Deploy Windows release installer
-        if: github.repository == 'OrcaSlicer/OrcaSlicer' && github.ref == 'refs/heads/main' && inputs.os == 'windows-latest'
+        if: github.repository == 'OrcaSlicer/OrcaSlicer' && github.ref == 'refs/heads/main' && runner.os == 'Windows' && !vars.SELF_HOSTED
         uses: WebFreak001/deploy-nightly@v3.2.0
         with:
           upload_url: https://uploads.github.com/repos/OrcaSlicer/OrcaSlicer/releases/137995723/assets{?name,label}
@@ -365,7 +360,7 @@ jobs:
           max_releases: 1
 
       - name: Deploy Windows OrcaSlicer_profile_validator release
-        if: github.repository == 'OrcaSlicer/OrcaSlicer' && github.ref == 'refs/heads/main' && inputs.os == 'windows-latest'
+        if: github.repository == 'OrcaSlicer/OrcaSlicer' && github.ref == 'refs/heads/main' && runner.os == 'Windows' && !vars.SELF_HOSTED
         uses: WebFreak001/deploy-nightly@v3.2.0
         with:
           upload_url: https://uploads.github.com/repos/OrcaSlicer/OrcaSlicer/releases/137995723/assets{?name,label}
@@ -377,18 +372,16 @@ jobs:
 
 # Ubuntu
       - name: Apt-Install Dependencies
-        if: inputs.os == 'ubuntu-24.04'
+        if: runner.os == 'Linux' && !vars.SELF_HOSTED
         uses: ./.github/actions/apt-install-deps
 
         # Tests must built at the same time as the slicer;
         # if you untangle them feel free to separate them here too
       - name: Build slicer and tests
-        if: inputs.os == 'ubuntu-20.04' || inputs.os == 'ubuntu-24.04'
+        if: runner.os == 'Linux'
         shell: bash
-        env:
-          ubuntu-ver-str: ${{ (inputs.os == 'ubuntu-24.04' && '_Ubuntu2404') || '' }}
         run: |
-          ./build_linux.sh -istr
+          ./build_linux.sh -istrlL
           mv -n ./build/OrcaSlicer_Linux_V${{ env.ver_pure }}.AppImage ./build/OrcaSlicer_Linux_AppImage${{ env.ubuntu-ver-str }}_${{ env.ver }}.AppImage
           chmod +x ./build/OrcaSlicer_Linux_AppImage${{ env.ubuntu-ver-str }}_${{ env.ver }}.AppImage
           tar -cvpf build_tests.tar build/tests
@@ -396,7 +389,7 @@ jobs:
         # Use tar because upload-artifacts won't always preserve directory structure
         # and doesn't preserve file permissions
       - name: Upload Test Artifact
-        if: inputs.os == 'ubuntu-24.04'
+        if: runner.os == 'Linux'
         uses: actions/upload-artifact@v6
         with:
           name: ${{ github.sha }}-tests
@@ -406,7 +399,7 @@ jobs:
           if-no-files-found: error
 
       - name: Build orca_custom_preset_tests
-        if: github.ref == 'refs/heads/main' && inputs.os == 'ubuntu-24.04'
+        if: github.ref == 'refs/heads/main' && runner.os == 'Linux' && !vars.SELF_HOSTED
         working-directory: ${{ github.workspace }}/build/src/Release
         shell: bash
         run: |
@@ -415,28 +408,21 @@ jobs:
           zip -r orca_custom_preset_tests.zip user/
 
       - name: Upload artifacts Ubuntu
-        if: ${{ ! env.ACT && inputs.os == 'ubuntu-20.04' || inputs.os == 'ubuntu-24.04' }}
-        env:
-          ubuntu-ver: ${{ (inputs.os == 'ubuntu-20.04' && '2004') || (inputs.os == 'ubuntu-24.04' && '2404') || '' }}
-          ubuntu-ver-str: ${{ (inputs.os == 'ubuntu-24.04' && '_Ubuntu2404') || '' }}
+        if: ${{ ! env.ACT && runner.os == 'Linux' }}
         uses: actions/upload-artifact@v6
         with:
           name: OrcaSlicer_Linux_ubuntu_${{ env.ubuntu-ver }}_${{ env.ver }}
           path: './build/OrcaSlicer_Linux_AppImage${{ env.ubuntu-ver-str }}_${{ env.ver }}.AppImage'
 
       - name: Upload OrcaSlicer_profile_validator Ubuntu
-        if: ${{ ! env.ACT && inputs.os == 'ubuntu-20.04' || inputs.os == 'ubuntu-24.04' }}
-        env:
-          ubuntu-ver: ${{ (inputs.os == 'ubuntu-20.04' && '2004') || (inputs.os == 'ubuntu-24.04' && '2404') || '' }}
+        if: ${{ ! env.ACT && runner.os == 'Linux' && !vars.SELF_HOSTED }}
         uses: actions/upload-artifact@v6
         with:
           name: OrcaSlicer_profile_validator_Linux_ubuntu_${{ env.ubuntu-ver }}_${{ env.ver }}
           path: './build/src/Release/OrcaSlicer_profile_validator'
 
       - name: Deploy Ubuntu release
-        if: ${{ github.repository == 'OrcaSlicer/OrcaSlicer' && ! env.ACT && github.ref == 'refs/heads/main' && (inputs.os == 'ubuntu-20.04' || inputs.os == 'ubuntu-24.04') }}
-        env:
-          ubuntu-ver-str: ${{ (inputs.os == 'ubuntu-24.04' && '_Ubuntu2404') || '' }}
+        if: ${{ github.repository == 'OrcaSlicer/OrcaSlicer' && ! env.ACT && github.ref == 'refs/heads/main' && runner.os == 'Linux' && !vars.SELF_HOSTED }}
         uses: WebFreak001/deploy-nightly@v3.2.0
         with:
           upload_url: https://uploads.github.com/repos/OrcaSlicer/OrcaSlicer/releases/137995723/assets{?name,label}
@@ -446,7 +432,7 @@ jobs:
           asset_content_type: application/octet-stream
           max_releases: 1 # optional, if there are more releases than this matching the asset_name, the oldest ones are going to be deleted
       - name: Deploy Ubuntu release
-        if: ${{ github.repository == 'OrcaSlicer/OrcaSlicer' && ! env.ACT && github.ref == 'refs/heads/main' && inputs.os == 'ubuntu-24.04' }}
+        if: ${{ github.repository == 'OrcaSlicer/OrcaSlicer' && ! env.ACT && github.ref == 'refs/heads/main' && runner.os == 'Linux' && !vars.SELF_HOSTED }}
         uses: rickstaa/action-create-tag@v1
         with:
           tag: "nightly-builds"
@@ -455,9 +441,7 @@ jobs:
           message: "nightly-builds"
 
       - name: Deploy Ubuntu OrcaSlicer_profile_validator release
-        if: ${{ github.repository == 'OrcaSlicer/OrcaSlicer' && ! env.ACT && github.ref == 'refs/heads/main' && (inputs.os == 'ubuntu-20.04' || inputs.os == 'ubuntu-24.04') }}
-        env:
-          ubuntu-ver-str: ${{ (inputs.os == 'ubuntu-24.04' && '_Ubuntu2404') || '' }}
+        if: ${{ github.repository == 'OrcaSlicer/OrcaSlicer' && ! env.ACT && github.ref == 'refs/heads/main' && runner.os == 'Linux' && !vars.SELF_HOSTED }}
         uses: WebFreak001/deploy-nightly@v3.2.0
         with:
           upload_url: https://uploads.github.com/repos/OrcaSlicer/OrcaSlicer/releases/137995723/assets{?name,label}
@@ -468,7 +452,7 @@ jobs:
           max_releases: 1
 
       - name: Deploy orca_custom_preset_tests
-        if: ${{ github.repository == 'OrcaSlicer/OrcaSlicer' && ! env.ACT && github.ref == 'refs/heads/main' && inputs.os == 'ubuntu-24.04' }}
+        if: ${{ github.repository == 'OrcaSlicer/OrcaSlicer' && ! env.ACT && github.ref == 'refs/heads/main' && runner.os == 'Linux' && !vars.SELF_HOSTED }}
         uses: WebFreak001/deploy-nightly@v3.2.0
         with:
           upload_url: https://uploads.github.com/repos/OrcaSlicer/OrcaSlicer/releases/137995723/assets{?name,label}
diff --git a/build_flatpak.sh b/build_flatpak.sh
index 225cf25e66..94b79b1465 100755
--- a/build_flatpak.sh
+++ b/build_flatpak.sh
@@ -5,6 +5,7 @@
 # Based on the GitHub Actions workflow in .github/workflows/build_all.yml
 
 set -e
+SECONDS=0
 
 # Colors for output
 RED='\033[0;31m'
@@ -371,3 +372,6 @@ if [[ "$FORCE_CLEAN" != true ]]; then
     echo -e "• To force a clean build: $0 -f"
     echo -e "• To clean cache manually: rm -rf $CACHE_DIR"
 fi
+
+elapsed=$SECONDS
+printf "\nBuild completed in %dh %dm %ds\n" $((elapsed/3600)) $((elapsed%3600/60)) $((elapsed%60))
diff --git a/build_linux.sh b/build_linux.sh
index 9a9a9160ba..b1e1806c27 100755
--- a/build_linux.sh
+++ b/build_linux.sh
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -e # Exit immediately if a command exits with a non-zero status.
+SECONDS=0
 
 SCRIPT_NAME=$(basename "$0")
 SCRIPT_PATH=$(dirname "$(readlink -f "${0}")")
@@ -266,4 +267,7 @@ if [[ -n "${BUILD_IMAGE}" || -n "${BUILD_ORCA}" ]] ; then
     popd > /dev/null # build
 fi
 
+elapsed=$SECONDS
+printf "\nBuild completed in %dh %dm %ds\n" $((elapsed/3600)) $((elapsed%3600/60)) $((elapsed%60))
+
 popd > /dev/null # ${SCRIPT_PATH}
diff --git a/build_release_macos.sh b/build_release_macos.sh
index 4fca109877..8d417695ad 100755
--- a/build_release_macos.sh
+++ b/build_release_macos.sh
@@ -2,6 +2,7 @@
 
 set -e
 set -o pipefail
+SECONDS=0
 
 while getopts ":dpa:snt:xbc:i:1Tuh" opt; do
   case "${opt}" in
@@ -342,3 +343,6 @@ fi
 if [ "1." == "$PACK_DEPS". ]; then
     pack_deps
 fi
+
+elapsed=$SECONDS
+printf "\nBuild completed in %dh %dm %ds\n" $((elapsed/3600)) $((elapsed%3600/60)) $((elapsed%60))
diff --git a/build_release_vs.bat b/build_release_vs.bat
index fc3445bb5d..3f1a2e0af4 100644
--- a/build_release_vs.bat
+++ b/build_release_vs.bat
@@ -1,6 +1,7 @@
 @REM OrcaSlicer build script for Windows with VS auto-detect
 @echo off
 set WP=%CD%
+set _START_TIME=%TIME%
 
 @REM Check for Ninja Multi-Config option (-x)
 set USE_NINJA=0
@@ -73,7 +74,7 @@ if "%1"=="pack" (
     echo packing deps: OrcaSlicer_dep_win64_!build_date!_vs!VS_VERSION!.zip
 
     %WP%/tools/7z.exe a OrcaSlicer_dep_win64_!build_date!_vs!VS_VERSION!.zip OrcaSlicer_dep
-    exit /b 0
+    goto :done
 )
 
 set debug=OFF
@@ -120,7 +121,7 @@ if "%USE_NINJA%"=="1" (
 )
 @echo off
 
-if "%1"=="deps" exit /b 0
+if "%1"=="deps" goto :done
 
 :slicer
 echo "building Orca Slicer..."
@@ -142,3 +143,16 @@ cd ..
 call scripts/run_gettext.bat
 cd %build_dir%
 cmake --build . --target install --config %build_type%
+
+:done
+@echo off
+for /f "tokens=1-3 delims=:.," %%a in ("%_START_TIME: =0%") do set /a "_start_s=%%a*3600+%%b*60+%%c"
+for /f "tokens=1-3 delims=:.," %%a in ("%TIME: =0%") do set /a "_end_s=%%a*3600+%%b*60+%%c"
+set /a "_elapsed=_end_s - _start_s"
+if %_elapsed% lss 0 set /a "_elapsed+=86400"
+set /a "_hours=_elapsed / 3600"
+set /a "_remainder=_elapsed - _hours * 3600"
+set /a "_mins=_remainder / 60"
+set /a "_secs=_remainder - _mins * 60"
+echo.
+echo Build completed in %_hours%h %_mins%m %_secs%s
diff --git a/deps/GMP/GMP.cmake b/deps/GMP/GMP.cmake
index 623f01a171..b3ba181753 100644
--- a/deps/GMP/GMP.cmake
+++ b/deps/GMP/GMP.cmake
@@ -65,7 +65,7 @@ else ()
         DOWNLOAD_DIR ${DEP_DOWNLOAD_DIR}/GMP
         PATCH_COMMAND git apply ${GMP_DIRECTORY_FLAG} --verbose ${CMAKE_CURRENT_LIST_DIR}/0001-GMP_GCC15.patch
         BUILD_IN_SOURCE ON
-        CONFIGURE_COMMAND  env "CFLAGS=${_gmp_ccflags}" "CXXFLAGS=${_gmp_ccflags}" ./configure ${_cross_compile_arg} --enable-shared=no --enable-cxx=yes --enable-static=yes "--prefix=${DESTDIR}" ${_gmp_build_tgt}
+        CONFIGURE_COMMAND  env "CC=${CMAKE_C_COMPILER}" "CXX=${CMAKE_CXX_COMPILER}" "CFLAGS=${_gmp_ccflags}" "CXXFLAGS=${_gmp_ccflags}" "LDFLAGS=${CMAKE_EXE_LINKER_FLAGS}" ./configure ${_cross_compile_arg} --enable-shared=no --enable-cxx=yes --enable-static=yes "--prefix=${DESTDIR}" ${_gmp_build_tgt}
         BUILD_COMMAND     make -j
         INSTALL_COMMAND   make install
     )
diff --git a/deps/MPFR/MPFR.cmake b/deps/MPFR/MPFR.cmake
index 67758a8596..755a769955 100644
--- a/deps/MPFR/MPFR.cmake
+++ b/deps/MPFR/MPFR.cmake
@@ -31,7 +31,7 @@ else ()
         DOWNLOAD_DIR ${DEP_DOWNLOAD_DIR}/MPFR
         BUILD_IN_SOURCE ON
         CONFIGURE_COMMAND autoreconf -f -i && 
-                          env "CFLAGS=${_gmp_ccflags}" "CXXFLAGS=${_gmp_ccflags}" ./configure ${_cross_compile_arg} --prefix=${DESTDIR} --enable-shared=no --enable-static=yes --with-gmp=${DESTDIR} ${_gmp_build_tgt}
+                          env "CC=${CMAKE_C_COMPILER}" "CXX=${CMAKE_CXX_COMPILER}" "CFLAGS=${_gmp_ccflags}" "CXXFLAGS=${_gmp_ccflags}" "LDFLAGS=${CMAKE_EXE_LINKER_FLAGS}" ./configure ${_cross_compile_arg} --prefix=${DESTDIR} --enable-shared=no --enable-static=yes --with-gmp=${DESTDIR} ${_gmp_build_tgt}
         BUILD_COMMAND make -j
         INSTALL_COMMAND make install
         DEPENDS dep_GMP
diff --git a/deps/OpenSSL/OpenSSL.cmake b/deps/OpenSSL/OpenSSL.cmake
index 79465747e8..5f463c14a9 100644
--- a/deps/OpenSSL/OpenSSL.cmake
+++ b/deps/OpenSSL/OpenSSL.cmake
@@ -21,7 +21,7 @@ else()
     if(APPLE)
         set(_conf_cmd export MACOSX_DEPLOYMENT_TARGET=${CMAKE_OSX_DEPLOYMENT_TARGET} && ./Configure -mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET})
     else()
-        set(_conf_cmd "./config")
+        set(_conf_cmd env "CC=${CMAKE_C_COMPILER}" "LDFLAGS=${CMAKE_EXE_LINKER_FLAGS}" "./config")
     endif()
     set(_cross_comp_prefix_line "")
     set(_make_cmd make -j${NPROC})
diff --git a/scripts/build_flatpak_with_docker.sh b/scripts/build_flatpak_with_docker.sh
index 8e490f8f8b..d3eeaab6df 100755
--- a/scripts/build_flatpak_with_docker.sh
+++ b/scripts/build_flatpak_with_docker.sh
@@ -4,7 +4,7 @@
 # as the CI (build_all.yml).
 #
 # Usage:
-#   ./scripts/build_flatpak_with_docker.sh [--arch <x86_64|aarch64>] [--no-debug-info]
+#   ./scripts/build_flatpak_with_docker.sh [--arch <x86_64|aarch64>] [--no-debug-info] [--pull]
 #
 # Requirements:
 #   - Docker (or Podman with docker compatibility)
@@ -12,6 +12,7 @@
 # The resulting .flatpak bundle is placed in the project root.
 
 set -euo pipefail
+SECONDS=0
 
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
@@ -19,9 +20,8 @@ PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
 # ---------- defaults ----------
 ARCH="$(uname -m)"
 NO_DEBUG_INFO=false
-NO_PULL=false
+FORCE_PULL=false
 FORCE_CLEAN=true
-PRIVILEGED=false
 CONTAINER_IMAGE="ghcr.io/flathub-infra/flatpak-github-actions:gnome-49"
 
 normalize_arch() {
@@ -45,16 +45,18 @@ while [[ $# -gt 0 ]]; do
             ARCH="$2"; shift 2 ;;
         --no-debug-info)
             NO_DEBUG_INFO=true; shift ;;
+        --pull)
+            FORCE_PULL=true; shift ;;
         --no-pull)
-            NO_PULL=true; shift ;;
+            FORCE_PULL=false; shift ;;  # kept for backward compat (now default)
         --keep-build)
             FORCE_CLEAN=false; shift ;;
-        --privileged)
-            PRIVILEGED=true; shift ;;
         --image)
             CONTAINER_IMAGE="$2"; shift 2 ;;
         -h|--help)
-            echo "Usage: $0 [--arch <x86_64|aarch64>] [--no-debug-info] [--no-pull] [--keep-build] [--privileged] [--image <image>]"
+            echo "Usage: $0 [--arch <x86_64|aarch64>] [--no-debug-info] [--pull] [--keep-build] [--image <image>]"
+            echo "  --pull         Force pull the container image (default: use cached, auto-pull if missing)"
+            echo "  --no-pull      Do not force pull (default, kept for backward compat)"
             exit 0 ;;
         *)
             echo "Unknown option: $1" >&2; exit 1 ;;
@@ -91,7 +93,7 @@ echo "  Arch:       ${ARCH}"
 echo "  Image:      ${CONTAINER_IMAGE}"
 echo "  Bundle:     ${BUNDLE_NAME}"
 echo "  Debug info: $([ "$NO_DEBUG_INFO" = true ] && echo "disabled" || echo "enabled")"
-echo "  Privileged: $([ "$PRIVILEGED" = true ] && echo "enabled" || echo "disabled")"
+echo "  Pull mode:  $([ "$FORCE_PULL" = true ] && echo "force" || echo "auto (cached if available)")"
 echo "  ccache:     enabled"
 echo ""
 
@@ -123,9 +125,14 @@ sed "/name: OrcaSlicer/{
 # ---------- run build in Docker ----------
 DOCKER="${DOCKER:-docker}"
 
-if [ "$NO_PULL" = false ]; then
-    echo "=== Pulling container image ==="
+if [ "$FORCE_PULL" = true ]; then
+    echo "=== Pulling container image (--pull requested) ==="
     "$DOCKER" pull "$CONTAINER_IMAGE"
+elif ! "$DOCKER" image inspect "$CONTAINER_IMAGE" &>/dev/null; then
+    echo "=== Pulling container image (not found locally) ==="
+    "$DOCKER" pull "$CONTAINER_IMAGE"
+else
+    echo "=== Using cached container image (use --pull to update) ==="
 fi
 
 FORCE_CLEAN_FLAG=""
@@ -133,10 +140,7 @@ if [ "$FORCE_CLEAN" = true ]; then
     FORCE_CLEAN_FLAG="--force-clean"
 fi
 
-DOCKER_RUN_ARGS=(run --rm)
-if [ "$PRIVILEGED" = true ]; then
-    DOCKER_RUN_ARGS+=(--privileged)
-fi
+DOCKER_RUN_ARGS=(run --rm -i --privileged)
 
 # Pass build parameters as env vars so the inner script doesn't need
 # variable expansion from the outer shell (avoids quoting issues).
@@ -215,4 +219,7 @@ echo "=== Flatpak bundle ready ==="
 echo "  ${PROJECT_ROOT}/${BUNDLE_NAME}"
 echo ""
 echo "Install with:"
-echo "  flatpak install --user ${BUNDLE_NAME}"
\ No newline at end of file
+echo "  flatpak install --user ${BUNDLE_NAME}"
+
+elapsed=$SECONDS
+printf "\nBuild completed in %dh %dm %ds\n" $((elapsed/3600)) $((elapsed%3600/60)) $((elapsed%60))
\ No newline at end of file
diff --git a/scripts/linux.d/debian b/scripts/linux.d/debian
index 53e4ee5fa5..b3169718c8 100644
--- a/scripts/linux.d/debian
+++ b/scripts/linux.d/debian
@@ -21,6 +21,8 @@ REQUIRED_DEV_PACKAGES=(
     libssl-dev
     libtool
     libudev-dev
+    clang
+    lld
     ninja-build
     texinfo
     wget