ci: Ubicloud is the main CI — retire the Hetzner VM workflows

ci-ubicloud.yml (cherry-picked from the ubicloud-ci experiment branch, green
on run 27375556034: 291 wx + 38 kicad tests in 1h52m) now triggers on main
pushes and replaces ci-full-build.yml and ci.yml. The Hetzner flow needed
create/delete-VM jobs, a PAT + hcloud token, and a shared one-slot
concurrency lock; the Ubicloud runner is a plain runs-on label and finished
faster end-to-end. wasm-opt-bench.yml stays (dispatch-only Hetzner bench
harness, unrelated to CI).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.github/workflows/ci-full-build.yml

@@ -1,142 +0,0 @@
-# Full KiCad WASM build (all 6 tools) + e2e on an ephemeral Hetzner ccx53.
-# This is the main-branch CI — the ONLY push-triggered Hetzner workflow; the
-# bench (wasm-opt-bench.yml) and feature-branch (ci.yml) workflows are
-# workflow_dispatch-only to keep paid VM spend deliberate. Validated at ~1h15m
-# (run 27280051992, was 4h05m): lifted docker CPU caps, pipelined host-side
-# wasm-opt (KICAD_PIPELINE=1), self-built Binaryen v130. History and
-# measurements in docs/ci-build-slowness-findings.md.
-
-name: CI full build + e2e (Hetzner)
-
-on:
-  push:
-    branches: ["main"]
-    # docs-only commits must not burn a ~1h15m Hetzner slot
-    paths-ignore: ["docs/**", "**.md"]
-  workflow_dispatch:
-    inputs:
-      binaryen_version: { description: "Binaryen version for the host asyncify+-O2 step", required: false, default: "130" }
-
-concurrency:
-  group: wasm-opt-bench          # share the one-Hetzner-slot lock with the sweeps
-  cancel-in-progress: false
-
-jobs:
-  create-runner:
-    name: Create Hetzner runner
-    runs-on: ubuntu-latest
-    outputs:
-      label: ${{ steps.create.outputs.label }}
-      server_id: ${{ steps.create.outputs.server_id }}
-    steps:
-      - uses: Cyclenerd/hcloud-github-runner@v1
-        id: create
-        with:
-          mode: create
-          github_token: ${{ secrets.HETZNER_RUNNER_PAT }}
-          hcloud_token: ${{ secrets.HCLOUD_TOKEN }}
-          server_type: ccx53
-          location: nbg1
-          image: ubuntu-24.04
-
-  validate:
-    name: Build all tools + KiCad e2e
-    needs: create-runner
-    runs-on: ${{ needs.create-runner.outputs.label }}
-    timeout-minutes: 300
-    env:
-      KICAD_LOG_NESTED: "1"
-      BINARYEN_VERSION: ${{ inputs.binaryen_version || '130' }}
-    steps:
-      - name: Install system deps (Docker, git)
-        run: |
-          export DEBIAN_FRONTEND=noninteractive
-          sudo apt-get update
-          # xvfb: kicad e2e runs headed Firefox under a virtual display — headless
-          # Firefox cannot create any GL context on the GPU-less VM (see
-          # tests/playwright-kicad.config.ts CI prefs).
-          sudo apt-get install -y ca-certificates curl git libjemalloc2 xvfb
-          sudo install -m 0755 -d /etc/apt/keyrings
-          curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
-          sudo chmod a+r /etc/apt/keyrings/docker.gpg
-          echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] \
-            https://download.docker.com/linux/ubuntu $(. /etc/os-release && echo $VERSION_CODENAME) stable" \
-            | sudo tee /etc/apt/sources.list.d/docker.list >/dev/null
-          sudo apt-get update
-          sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
-          # toolchain for BINARYEN_BUILD_FROM_SOURCE (get-wasm-opt.sh)
-          sudo apt-get install -y cmake ninja-build g++
-
-      - uses: actions/checkout@v4
-        with: { submodules: recursive }
-
-      - uses: actions/setup-node@v4
-        with: { node-version: 20 }
-
-      # Full KiCad WASM build of ALL 6 tools, but the host-side asyncify + -O2 use
-      # Binaryen v130 (BINARYEN_VERSION in env → get-wasm-opt.sh forces that
-      # standalone release). 'all' = pcbnew eeschema calculator pl_editor
-      # symbol_editor gerbview, built in sequence.
-      - name: Build all KiCad tools WASM with Binaryen ${{ env.BINARYEN_VERSION }}
-        run: |
-          # Lift the docker-compose dev-Mac caps (10 CPUs / 32G): run 27226030304
-          # compiled on 10 of 32 cores with -j 32. Pipeline the host-side
-          # asyncify+-O2 with the next tool's container compile (KICAD_PIPELINE=1;
-          # wasm-opt only reaches ~350% CPU, the container is idle meanwhile).
-          # BINARYEN_CORES=16: -O2 is Amdahl-capped ~4 effective cores, and up to
-          # two postprocesses run concurrently next to the compile.
-          export KICAD_DOCKER_CPUS="$(nproc)" KICAD_DOCKER_MEM=110G
-          export KICAD_PIPELINE=1 BINARYEN_CORES=16
-          # Self-built wasm-opt: the official x86_64-linux tarball runs asyncify
-          # 4x slower than a stock gcc -O3+LTO build, identical output
-          # (A/B on this runner, run 27276830256). ~5 min build, instantly repaid.
-          export BINARYEN_BUILD_FROM_SOURCE=1
-          echo "Building ALL tools with BINARYEN_VERSION=${BINARYEN_VERSION}, compile -j $(nproc) on ${KICAD_DOCKER_CPUS} CPUs, pipelined wasm-opt"
-          ./docker/build.sh all --build-deps -j "$(nproc)"
-          echo "wasm-opt used:"; ./scripts/common/get-wasm-opt.sh --version 2>/dev/null || true
-          ls -lh output/*.wasm
-
-      - name: Install test deps
-        working-directory: tests
-        run: npm ci
-
-      - name: Install Playwright browsers
-        working-directory: tests
-        run: npx playwright install --with-deps firefox chromium
-
-      - name: Stage KiCad WASM for tests
-        working-directory: tests
-        run: npm run setup:kicad
-
-      - name: KiCad e2e (npm run test:kicad:ci)
-        working-directory: tests
-        # xvfb-run: headed Firefox on a virtual display — WebGL needs GLX + Mesa
-        # llvmpipe, which headless Firefox can't reach on a GPU-less VM.
-        # test:kicad:ci adds the chromium-ci project: pcbnew's wasm exceeds
-        # SpiderMonkey's x86-64 code budget, so those specs run on Chromium.
-        run: xvfb-run -a npm run test:kicad:ci
-
-      - name: Upload test logs & screenshots
-        if: always()
-        uses: actions/upload-artifact@v4
-        with:
-          name: full-build-e2e-${{ github.run_id }}
-          path: |
-            tests/logs/**
-            tests/test-results/**
-            tests/playwright-report/**
-          if-no-files-found: ignore
-
-  delete-runner:
-    name: Delete Hetzner runner
-    needs: [create-runner, validate]
-    runs-on: ubuntu-latest
-    if: always()
-    steps:
-      - uses: Cyclenerd/hcloud-github-runner@v1
-        with:
-          mode: delete
-          github_token: ${{ secrets.HETZNER_RUNNER_PAT }}
-          hcloud_token: ${{ secrets.HCLOUD_TOKEN }}
-          name: ${{ needs.create-runner.outputs.label }}
-          server_id: ${{ needs.create-runner.outputs.server_id }}

.github/workflows/ci-ubicloud.yml

@@ -1,16 +1,16 @@
-# EXPERIMENT: same full build + e2e as ci-full-build.yml, but on a Ubicloud
-# runner instead of an ephemeral Hetzner VM. Ubicloud runners are plain
-# runs-on labels — no create/delete-runner jobs, no shared one-slot lock.
-# Triggered ONLY on the ubicloud-ci branch (and manual dispatch) so it never
-# competes with the Hetzner main CI. ubicloud-standard-30 (x86, 30 vcpu) is
-# the closest parity to the Hetzner ccx53 (32 cores) and matches the arch the
-# e2e screenshot baselines were captured on.
+# The main-branch CI: full KiCad WASM build (all 6 tools, Binaryen 130) +
+# wxWidgets e2e (291 tests) + KiCad e2e (38 tests) on a Ubicloud runner.
+# Replaced the ephemeral-Hetzner-VM workflows (ci-full-build.yml / ci.yml,
+# removed 2026-06-12): Ubicloud runners are plain runs-on labels — no
+# create/delete-runner jobs, no shared one-slot lock — and benchmarked
+# faster end-to-end. Proven green: run 27375556034 (329 tests, 1h52m).
+# ubicloud-standard-30 (x86, 30 vcpu) ≈ the old Hetzner ccx53.
 
 name: CI full build + e2e (Ubicloud)
 
 on:
   push:
-    branches: ["ubicloud-ci"]
+    branches: ["main", "ubicloud-ci"]
     # docs-only commits must not burn a paid runner slot
     paths-ignore: ["docs/**", "**.md"]
   workflow_dispatch:

.github/workflows/ci.yml

@@ -1,191 +0,0 @@
-# Ephemeral Hetzner Cloud CI: a fresh ccx53 VM is created per run, the full
-# build + e2e suites run on it, then it is destroyed. No persistent infra.
-#
-# Lifecycle (Cyclenerd/hcloud-github-runner): create-runner spins up a Hetzner
-# VM registered as an ephemeral self-hosted runner -> build-and-test runs on it
-# -> delete-runner tears it down (always, even on failure -> no lingering cost).
-#
-# Required repo secrets (emergence-engineering/pcbjam -> Settings -> Secrets):
-#   HCLOUD_TOKEN        Hetzner Cloud API token, Read & Write
-#   HETZNER_RUNNER_PAT  GitHub PAT with Administration: read & write (registers
-#                       and unregisters the self-hosted runner)
-#
-# Submodules: kicad/wxwidgets use SSH URLs (.gitmodules) but point at PUBLIC repos,
-# so actions/checkout rewrites them to HTTPS and the default GITHUB_TOKEN reads them.
-
-name: CI (Hetzner)
-
-# Manual-only (workflow_dispatch): every run costs a paid ephemeral Hetzner VM.
-# Main-branch CI is ci-full-build.yml.
-on:
-  workflow_dispatch:
-    inputs:
-      binaryen_cores:
-        description: "BINARYEN_CORES for the wasm-opt/asyncify step (blank = all cores / nproc). Use to A/B core counts."
-        required: false
-        default: ""
-
-concurrency:
-  group: ci-hetzner-${{ github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  create-runner:
-    name: Create Hetzner runner
-    runs-on: ubuntu-latest # or ubicloud-standard-2 if GitHub-hosted is disabled
-    outputs:
-      label: ${{ steps.create.outputs.label }}
-      server_id: ${{ steps.create.outputs.server_id }}
-    steps:
-      - name: Create ephemeral ccx53 runner
-        id: create
-        uses: Cyclenerd/hcloud-github-runner@v1
-        with:
-          mode: create
-          github_token: ${{ secrets.HETZNER_RUNNER_PAT }}
-          hcloud_token: ${{ secrets.HCLOUD_TOKEN }}
-          server_type: ccx53
-          location: nbg1
-          image: ubuntu-24.04
-
-  build-and-test:
-    name: Build & test (Hetzner ccx53)
-    needs: create-runner
-    runs-on: ${{ needs.create-runner.outputs.label }}
-    timeout-minutes: 160 # cold --build-deps dominates; + wx build + both suites
-    env:
-      # Stream build-script output straight to the Actions log instead of
-      # redirecting it to logs/<script>/<ts>.log (see scripts/common/logging.sh,
-      # which returns early when KICAD_LOG_NESTED=1). Nothing consumes
-      # KICAD_LOG_FILE, so this is safe and gives live, greppable CI output.
-      KICAD_LOG_NESTED: "1"
-    steps:
-      # Hetzner's ubuntu-24.04 cloud image ships neither Docker nor git (Ubicloud
-      # preinstalled both). Install Docker CE + git before the Docker-based build.
-      - name: Install system deps (Docker, git)
-        run: |
-          export DEBIAN_FRONTEND=noninteractive
-          sudo apt-get update
-          # libjemalloc2: scalable allocator preloaded into the host-side wasm-opt
-          # passes (scripts/common/apply-asyncify.sh) to avoid glibc malloc
-          # arena-lock contention, which otherwise burns ~half of wasm-opt's CPU
-          # in futex lock-spin under many threads.
-          # autoconf/automake: build-wxuniversal-wasm.sh regenerates wxWidgets'
-          # ./configure from configure.in on a fresh checkout (git doesn't
-          # preserve mtimes, so configure.in looks newer). make: the host-side
-          # wxWidgets + wasm-test builds drive emconfigure/emmake/make directly.
-          # All of this runs on the bare host (not in Docker), and the Hetzner
-          # ubuntu-24.04 cloud image is minimal, so these must be installed here.
-          # xvfb: kicad e2e runs headed Firefox under a virtual display — headless
-          # Firefox cannot create any GL context on the GPU-less VM (see
-          # tests/playwright-kicad.config.ts CI prefs).
-          sudo apt-get install -y ca-certificates curl git libjemalloc2 autoconf automake make xvfb
-          # toolchain for BINARYEN_BUILD_FROM_SOURCE (get-wasm-opt.sh)
-          sudo apt-get install -y cmake ninja-build g++
-          sudo install -m 0755 -d /etc/apt/keyrings
-          curl -fsSL https://download.docker.com/linux/ubuntu/gpg \
-            | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
-          sudo chmod a+r /etc/apt/keyrings/docker.gpg
-          echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] \
-            https://download.docker.com/linux/ubuntu $(. /etc/os-release && echo $VERSION_CODENAME) stable" \
-            | sudo tee /etc/apt/sources.list.d/docker.list >/dev/null
-          sudo apt-get update
-          sudo apt-get install -y docker-ce docker-ce-cli containerd.io \
-            docker-buildx-plugin docker-compose-plugin
-
-      - name: Checkout (with submodules)
-        uses: actions/checkout@v4
-        with:
-          submodules: recursive
-
-      - name: Show disk space
-        run: df -h
-
-      - name: Set up Node
-        uses: actions/setup-node@v4
-        with:
-          node-version: 20
-
-      # 1) Cold build KiCad WASM app + all dependencies (Docker; longest step).
-      #    ccx53 has 32 vCPU / 128 GB RAM, so use every core: -j $(nproc) for the
-      #    C++ compile and, by default, for the host-side wasm-opt/asyncify
-      #    (apply-asyncify.sh runs on the host and reads BINARYEN_CORES). The
-      #    workflow_dispatch input overrides BINARYEN_CORES so we can A/B core
-      #    counts (e.g. 8 vs 32) without editing the workflow; blank = nproc.
-      - name: Build KiCad WASM (all, --build-deps)
-        env:
-          BINARYEN_CORES_INPUT: ${{ github.event.inputs.binaryen_cores }}
-        run: |
-          CORES="${BINARYEN_CORES_INPUT:-$(nproc)}"
-          # Lift the docker-compose dev-Mac resource caps (10 CPUs / 32G) so the
-          # container compile actually uses the ccx53's 32 cores / 128 GB.
-          export KICAD_DOCKER_CPUS="$(nproc)" KICAD_DOCKER_MEM=110G
-          # Self-built wasm-opt: official Linux tarball runs asyncify 4x slower
-          # (see get-wasm-opt.sh / run 27276830256). Identical output, sha256-verified.
-          export BINARYEN_BUILD_FROM_SOURCE=1
-          echo "Build parallelism: compile -j $(nproc) on ${KICAD_DOCKER_CPUS} CPUs, BINARYEN_CORES=${CORES}"
-          BINARYEN_CORES="${CORES}" ./docker/build.sh eeschema --build-deps -j "$(nproc)"
-
-      # 2) Host-side wxWidgets build that produces the wxWidgets test apps consumed
-      #    by `npm run test` (NOT produced by docker/build.sh). Auto-installs emsdk.
-      - name: Build wxWidgets (wxUniversal WASM)
-        run: ./scripts/build-wxuniversal-wasm.sh
-
-      - name: Build wxWidgets test apps
-        run: ./scripts/build-wasm-test.sh
-
-      # 3) Test deps + browsers (firefox for KiCad headless, chromium for wxWidgets).
-      - name: Install test deps
-        working-directory: tests
-        run: npm ci
-
-      - name: Install Playwright browsers
-        working-directory: tests
-        run: npx playwright install --with-deps firefox chromium
-
-      # 4) Stage KiCad artifacts from ./output into tests/apps/kicad.
-      - name: Setup KiCad WASM for tests
-        working-directory: tests
-        run: npm run setup:kicad
-
-      # 5) Both e2e suites. GitHub sets CI=true automatically -> workers:1, retries,
-      #    fresh per-run web server (see playwright configs).
-      - name: wxWidgets e2e (npm run test)
-        working-directory: tests
-        run: npm run test
-
-      - name: KiCad e2e (npm run test:kicad:ci)
-        working-directory: tests
-        # xvfb-run: headed Firefox on a virtual display — WebGL needs GLX + Mesa
-        # llvmpipe, which headless Firefox can't reach on a GPU-less VM.
-        # test:kicad:ci adds the chromium-ci project: pcbnew's wasm exceeds
-        # SpiderMonkey's x86-64 code budget, so those specs run on Chromium.
-        run: xvfb-run -a npm run test:kicad:ci
-
-      # 6) Always capture logs/screenshots for post-mortem.
-      - name: Upload test logs & results
-        if: always()
-        uses: actions/upload-artifact@v4
-        with:
-          name: e2e-logs
-          path: |
-            tests/logs/**
-            tests/test-results/**
-            tests/playwright-report/**
-            logs/**
-          if-no-files-found: ignore
-
-  delete-runner:
-    name: Delete Hetzner runner
-    needs: [create-runner, build-and-test]
-    runs-on: ubuntu-latest # match create-runner's choice
-    if: always() # tear down even if the build fails -> no lingering cost
-    steps:
-      - name: Delete ephemeral runner
-        uses: Cyclenerd/hcloud-github-runner@v1
-        with:
-          mode: delete
-          github_token: ${{ secrets.HETZNER_RUNNER_PAT }}
-          hcloud_token: ${{ secrets.HCLOUD_TOKEN }}
-          name: ${{ needs.create-runner.outputs.label }}
-          server_id: ${{ needs.create-runner.outputs.server_id }}