test(m4): retry Start Read until the chartread session is running

testTwoPassAverageFailurePromotesFirstPass died on Gitea run 35443
waiting for btnCalibrate after a single Start click. Handheld in the
same job succeeded: AX reported enabled and synthesized the click, but
SwiftUI startRead() was still a no-op (same class as 35251).

Re-click until btnCancel/Calibrate/Trigger exist — Cancel is in the
tree for the whole session — then wait for Calibrate.

.github/workflows/macos.yml

@@ -0,0 +1,231 @@
+# GitHub Actions twin of .gitea/workflows/macos.yml.
+# Deltas from the Gitea file (everything else is the same jobs/steps):
+#   - runs-on macos-14: github.com retired macos-12. Do not use
+#     macos-latest — in 2026 that is macos-26-arm64, where a 1280×800
+#     window hangs off the virtual display and XCTest marks sidebar
+#     controls (x ≈ -116) as not hittable (run 34864198118).
+#   - actions/upload-artifact@v4: v3 is shut down on github.com. Gitea act_runner
+#     still uses v3.
+#   - No NODE_EXTRA_CA_CERTS / System keychain bundle: that is only for the
+#     private Gitea CA when the runner talks to git.i3omb.com.
+#   - Tag DMGs go to a GitHub Release via `gh` instead of
+#     scripts/attach-release-asset.sh (Gitea /api/v1).
+name: macOS CI
+
+on:
+  push:
+    branches:
+      - develop
+    tags:
+      - 'v*'
+  pull_request:
+    branches:
+      - develop
+
+permissions:
+  contents: read
+
+jobs:
+  build-and-test:
+    runs-on: macos-14
+    env:
+      DERIVED: build/DerivedData-test
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Assert Xcode 14+ toolchain
+        run: |
+          line="$(xcodebuild -version | head -1)"
+          major="$(printf '%s' "$line" | sed -n 's/^Xcode \([0-9][0-9]*\)\..*/\1/p')"
+          if [ -z "$major" ] || [ "$major" -lt 14 ]; then
+            echo "Unexpected Xcode version: $line" >&2; exit 1
+          fi
+          echo "$line"
+
+      # Tag pushes whose name contains "prerelease" skip the test build and both
+      # test legs: they exist to package a build already validated elsewhere.
+      # The job still succeeds quickly so `package`'s `needs:` stays satisfied.
+      # Homebrew's xcodegen formula requires Xcode 15.3, which cannot be
+      # installed on macOS 12 (#109). The script installs a pinned
+      # prebuilt release instead. dmgbuild is not installed here — the
+      # test job does not package (#95).
+      - name: Ensure host tools
+        if: "!(startsWith(github.ref, 'refs/tags/') && contains(github.ref_name, 'prerelease'))"
+        run: scripts/ensure-host-tools.sh
+
+      - name: Generate Xcode project
+        if: "!(startsWith(github.ref, 'refs/tags/') && contains(github.ref_name, 'prerelease'))"
+        run: xcodegen generate --spec project.yml
+
+      # Tests only ever run on the runner's own architecture; build
+      # just that slice. Packaging (scripts/package-release.sh) still
+      # produces the universal Release binary.
+      - name: Build for testing (host arch)
+        if: "!(startsWith(github.ref, 'refs/tags/') && contains(github.ref_name, 'prerelease'))"
+        run: |
+          xcodebuild build-for-testing \
+            -scheme ICCery \
+            -destination 'platform=macOS' \
+            -derivedDataPath "$DERIVED" \
+            -configuration Debug \
+            ARCHS="$(uname -m)" \
+            ONLY_ACTIVE_ARCH=NO \
+            CODE_SIGNING_ALLOWED=YES \
+            CODE_SIGN_IDENTITY='-'
+
+      # Xcode embeds the shared ICCeryCore package framework into the app
+      # and the test bundle without signing it. Ad-hoc hosts still require
+      # every loaded dylib to carry a cdhash — dyld killed the test host at
+      # launch (run 31992) — so sign every embedded copy once the build is
+      # done (embed steps run after any build script phase) (#119).
+      - name: Sign package product frameworks
+        if: "!(startsWith(github.ref, 'refs/tags/') && contains(github.ref_name, 'prerelease'))"
+        run: |
+          find "$DERIVED/Build/Products/Debug" -depth -name '*_PackageProduct.framework' -print0 \
+            | while IFS= read -r -d '' fw; do
+                echo "signing $fw"
+                codesign --force --sign - --timestamp=none "$fw"
+              done
+
+      - name: Test unit (ICCeryCoreTests)
+        if: "!(startsWith(github.ref, 'refs/tags/') && contains(github.ref_name, 'prerelease'))"
+        run: |
+          XCTESTRUN="$(find "$DERIVED" -name 'ICCery*.xctestrun' | head -n 1)"
+          if [ -z "$XCTESTRUN" ] || [ ! -f "$XCTESTRUN" ]; then
+            echo "error: no xctestrun produced by build-for-testing" >&2
+            exit 1
+          fi
+          echo "xctestrun: $XCTESTRUN"
+          xcodebuild test-without-building \
+            -xctestrun "$XCTESTRUN" \
+            -only-testing:ICCeryCoreTests \
+            -destination 'platform=macOS' \
+            -derivedDataPath "$DERIVED"
+
+      # UI tests need macOS Automation / Accessibility permission on the
+      # runner. GitHub-hosted macos-14 images enable this; a self-hosted
+      # Mac can still time out enabling that mode (run 29700) or launch
+      # the app into `.runningBackground` (run 29804). Kill any leftover
+      # unit-test host first; retry once; if the runner still cannot
+      # attach, do not fail the required gate so tag packaging can
+      # proceed. Real XCTest assertion failures still fail the job.
+      - name: Test UI (ICCeryUITests)
+        if: "!(startsWith(github.ref, 'refs/tags/') && contains(github.ref_name, 'prerelease'))"
+        run: |
+          set -o pipefail
+          XCTESTRUN="$(find "$DERIVED" -name 'ICCery*.xctestrun' | head -n 1)"
+          LOG="$DERIVED/ui-test.log"
+          pkill -x ICCery 2>/dev/null || true
+          sleep 1
+
+          run_ui() {
+            local label="$1"
+            shift
+            echo "::group::UI tests $label"
+            set +e
+            xcodebuild test-without-building \
+              -xctestrun "$XCTESTRUN" \
+              -destination 'platform=macOS' \
+              -derivedDataPath "$DERIVED" \
+              "$@" | tee "$LOG"
+            rc=${PIPESTATUS[0]}
+            set -e
+            echo "::endgroup::"
+            return "$rc"
+          }
+
+          is_runner_attach_failure() {
+            grep -Eq "Timed out while enabling automation mode|Failed to activate application|current state: Running Background" "$LOG"
+          }
+
+          attempt=1
+          while [ "$attempt" -le 2 ]; do
+            # Probe one case first. A background-activate failure costs
+            # ~65s here instead of ~25 minutes for the whole suite (29804).
+            if ! run_ui "probe attempt $attempt" \
+                -only-testing:ICCeryUITests/AboutHelpUITests/testAboutDialogShowsVersionAndBuildDate; then
+              if is_runner_attach_failure; then
+                echo "warning: UI runner could not attach/activate the app (attempt $attempt)"
+                pkill -x ICCery 2>/dev/null || true
+                attempt=$((attempt + 1))
+                sleep 8
+                continue
+              fi
+              echo "error: UI probe failed with a real test error" >&2
+              exit 1
+            fi
+            if run_ui "full suite attempt $attempt" -only-testing:ICCeryUITests \
+                -skip-testing:ICCeryUITests/AboutHelpUITests/testAboutDialogShowsVersionAndBuildDate; then
+              exit 0
+            fi
+            if is_runner_attach_failure; then
+              echo "warning: UI runner lost activation mid-suite (attempt $attempt)"
+              pkill -x ICCery 2>/dev/null || true
+              attempt=$((attempt + 1))
+              sleep 8
+              continue
+            fi
+            echo "error: UI tests failed with a real test error" >&2
+            exit 1
+          done
+          echo "warning: skipping UI tests after repeated runner attach/activate failures"
+          exit 0
+
+      # XCTest stores the a11y hierarchy snapshot and screenshots in the
+      # xcresult on failure — upload it so UI failures can be triaged
+      # without access to the runner (#126).
+      - name: Upload UI test xcresult
+        if: "failure() && !(startsWith(github.ref, 'refs/tags/') && contains(github.ref_name, 'prerelease'))"
+        uses: actions/upload-artifact@v4
+        with:
+          name: ui-test-xcresult
+          path: build/DerivedData-test/Logs/Test
+
+  package:
+    needs: build-and-test
+    runs-on: macos-14
+    if: github.ref == 'refs/heads/develop' || startsWith(github.ref, 'refs/tags/v')
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      # scripts/package-release.sh runs `xcodegen generate` and dmgbuild;
+      # see build-and-test for why brew is not used on macOS 12 (#109).
+      # INSTALL_DMGBUILD isolates dmgbuild in build/.venv-dmgbuild so
+      # the test job never pip-installs it (#95).
+      - name: Ensure host tools
+        run: INSTALL_DMGBUILD=1 scripts/ensure-host-tools.sh
+
+      - name: Package release
+        run: scripts/package-release.sh
+        env:
+          CODESIGN_IDENTITY: ${{ secrets.CODESIGN_IDENTITY }}
+          DEVELOPMENT_TEAM: ${{ secrets.DEVELOPMENT_TEAM }}
+          NOTARIZE_APPLE_ID: ${{ secrets.NOTARIZE_APPLE_ID }}
+          NOTARIZE_PASSWORD: ${{ secrets.NOTARIZE_PASSWORD }}
+          APPLE_TEAM_ID: ${{ secrets.APPLE_TEAM_ID }}
+
+      - name: Upload DMG artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: iccery-dmg
+          path: ICCery-*.dmg
+
+      - name: Attach DMG to GitHub release
+        if: startsWith(github.ref, 'refs/tags/v')
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          set -eu
+          TAG="$GITHUB_REF_NAME"
+          case "$TAG" in
+            *prerelease*) PRE_FLAG=--prerelease ;;
+            *)            PRE_FLAG= ;;
+          esac
+          if ! gh release view "$TAG" >/dev/null 2>&1; then
+            gh release create "$TAG" --title "$TAG" --target "$GITHUB_SHA" $PRE_FLAG
+          fi
+          gh release upload "$TAG" ICCery-*.dmg --clobber

README.md

@@ -206,9 +206,13 @@ xcodebuild test -scheme ICCery -destination 'platform=macOS' \
   -only-testing:ICCeryUITests/Milestone5UITests
 ```
 
-CI (`.gitea/workflows/macos.yml`) runs `build-and-test` then `package` on
+CI (`.gitea/workflows/macos.yml` on Gitea, `.github/workflows/macos.yml` on
+GitHub) runs `build-and-test` then `package` on
 `develop` and on `v*` tags. Tags whose name contains `prerelease` skip the
 test job and still package. `pull_request` is wired for **`develop` only**.
+The GitHub file is the same pipeline on `macos-14` (github.com retired
+`macos-12`), `actions/upload-artifact@v4`, and `gh release upload` for tag
+DMGs.
 
 UI tests need an unlocked console (`IOConsoleLocked=false`). Mock Argyll /
 CUPS fixtures live under the test bundles; they must not be treated as proof

Sources/ICCery/ICCeryApp.swift

@@ -56,10 +56,41 @@ final class AppDelegate: NSObject, NSApplicationDelegate {
     }
 
     /// docs/21 §Shell: 1280×800 content, min 1100×700, centred.
+    /// GitHub-hosted Macs (and any display smaller than 1280×800) must
+    /// not get a window that hangs off-screen — XCTest then reports
+    /// sidebar controls at negative x as not hittable (run 34864198118).
     private func configureMainWindow(_ window: NSWindow) {
-        window.setContentSize(NSSize(width: 1280, height: 800))
-        window.contentMinSize = NSSize(width: 1100, height: 700)
+        let desired = NSSize(width: 1280, height: 800)
+        let minimum = NSSize(width: 1100, height: 700)
+        let visible = (window.screen ?? NSScreen.main)?.visibleFrame
+            ?? NSRect(origin: .zero, size: desired)
+
+        window.contentMinSize = NSSize(
+            width: min(minimum.width, visible.width),
+            height: min(minimum.height, visible.height)
+        )
+        window.setContentSize(NSSize(
+            width: min(desired.width, visible.width),
+            height: min(desired.height, max(minimum.height, visible.height - 40))
+        ))
         window.center()
+
+        var frame = window.frame
+        if frame.width > visible.width {
+            frame.size.width = visible.width
+        }
+        if frame.height > visible.height {
+            frame.size.height = visible.height
+        }
+        frame.origin.x = min(
+            max(frame.origin.x, visible.minX),
+            visible.maxX - frame.width
+        )
+        frame.origin.y = min(
+            max(frame.origin.y, visible.minY),
+            visible.maxY - frame.height
+        )
+        window.setFrame(frame, display: true)
     }
 
     /// Dock-click reopen: let the WindowGroup re-show or recreate the

Tests/ICCeryUITests/Milestone2UITests.swift

@@ -36,6 +36,7 @@ final class Milestone2UITests: XCTestCase {
             "ICCERY_UI_TESTING": "1",
             "ICCERY_TEST_ROOT": testRoot.path,
             "ICCERY_ARGYLL_BINARY_DIR": binDir.path,
+            "ICCERY_CUPS_BIN_DIR": binDir.path,
             "ICCERY_TEST_SAVE_TARGET":
                 workDir.appendingPathComponent("mytarget.ti1").path,
             "ICCERY_TEST_WORKDIR": workDir.path,
@@ -218,11 +219,12 @@ final class Milestone2UITests: XCTestCase {
         XCTAssertTrue(FileManager.default.fileExists(
             atPath: workDir.appendingPathComponent("mytarget.ti2").path))
 
-        // Print panel is live from M3; a default printer is selected
-        // so both the all-pages and per-page print buttons are enabled.
+        // Print panel is live from M3. GitHub macos-14 has no system
+        // queues, so mock CUPS (`ICCERY_CUPS_BIN_DIR`) must enumerate
+        // before Print All / per-page enable (run 34867767434).
         XCTAssertTrue(element("rawPrintPanel").exists)
-        XCTAssertTrue(app.buttons["btnPrintAll"].isEnabled)
-        XCTAssertTrue(app.buttons["btnPrintPage-0"].isEnabled)
+        _ = waitUntilEnabled("btnPrintAll", timeout: 15)
+        _ = waitUntilEnabled("btnPrintPage-0", timeout: 15)
         XCTAssertTrue(app.buttons["btnAdvanceToStage3"].isEnabled)
     }
 

Tests/ICCeryUITests/Milestone4UITests.swift

@@ -98,23 +98,9 @@ final class Milestone4UITests: XCTestCase {
         app.buttons["btnDetectInstruments"].click()
         _ = waitFor("chartreadInstrumentSelect", timeout: 20)
 
-        // Keep Auto (port 1) and start the session.
-        XCTAssertTrue(app.buttons["btnStartRead"].waitForExistence(timeout: 5))
-        app.buttons["btnStartRead"].click()
-
-        // Calibrate.
-        let calibrate = element("btnCalibrate")
-        if !calibrate.waitForExistence(timeout: 25) {
-            let error = element("chartreadLastError").label
-            let value = element("chartreadLastError").value as? String ?? "<nil>"
-            XCTFail("No calibrate button. lastError.label='\(error)' value='\(value)'")
-        }
-        app.buttons["btnCalibrate"].click()
-
-        // Trigger each strip until all are read → Done & Save appears.
-        driveStripsUntilDone()
-        XCTAssertTrue(element("btnDoneRead").exists)
-        app.buttons["btnDoneRead"].firstMatch.click()
+        // Wait until Start is enabled before clicking. Existence-only
+        // clicks are no-ops on the disabled control (runs 35251, 35293).
+        driveOnePass(startButton: "btnStartRead")
 
         // Averaging panel appears with one pass snapshot.
         _ = waitFor("chartreadAveragingPanel", timeout: 20)
@@ -168,15 +154,34 @@ final class Milestone4UITests: XCTestCase {
 
     /// Runs the mock handheld chartread session to completion
     /// (start → calibrate → strip A → strip B → Done & Save).
+    ///
+    /// `isEnabled` can be true in AX while the SwiftUI action is still
+    /// a no-op (runs 35251, 35443). Re-click until the session is
+    /// actually running (`btnCancel` is shown whenever
+    /// `isChartreadRunning`), then wait for Calibrate.
     private func driveOnePass(startButton: String) {
         let start = app.buttons[startButton]
-        XCTAssertTrue(start.waitForExistence(timeout: 10))
-        let deadline = Date().addingTimeInterval(10)
-        while Date() < deadline, !start.isEnabled {
+        XCTAssertTrue(start.waitForExistence(timeout: 10), startButton)
+        let enabledBy = Date().addingTimeInterval(10)
+        while Date() < enabledBy, !start.isEnabled {
             RunLoop.current.run(until: Date().addingTimeInterval(0.1))
         }
-        XCTAssertTrue(start.isEnabled)
-        start.click()
+        XCTAssertTrue(start.isEnabled, "\(startButton) never enabled")
+
+        let sessionBy = Date().addingTimeInterval(25)
+        while Date() < sessionBy, !chartreadSessionRunning {
+            if start.exists, start.isEnabled {
+                start.click()
+            }
+            RunLoop.current.run(until: Date().addingTimeInterval(0.4))
+        }
+        XCTAssertTrue(
+            chartreadSessionRunning,
+            "\(startButton) click never started chartread; "
+                + "notice=\(element("noticeText").value as? String ?? "") "
+                + "start.exists=\(start.exists)"
+        )
+
         _ = waitFor("btnCalibrate", timeout: 25)
         app.buttons["btnCalibrate"].click()
         driveStripsUntilDone()
@@ -184,6 +189,14 @@ final class Milestone4UITests: XCTestCase {
         app.buttons["btnDoneRead"].firstMatch.click()
     }
 
+    /// `btnCancel` is in the tree for the whole chartread session;
+    /// Calibrate/Trigger only appear after the first classified prompt.
+    private var chartreadSessionRunning: Bool {
+        element("btnCancel").exists
+            || element("btnCalibrate").exists
+            || element("btnTrigger").exists
+    }
+
     /// Clicks Trigger for each remaining strip until `btnDoneRead`
     /// appears — the button is re-polled each pass so a click that
     /// races a state transition isn't lost.