Maintain Swift CI and release v0.2.5

.github/workflows/ci.yml

@@ -1,38 +1,53 @@
 name: CI
 
 on:
+  workflow_dispatch:
   push:
     branches: [main, master]
   pull_request:
     branches: ["*"]
 
 jobs:
   build-and-test:
-    runs-on: macos-latest
+    name: Xcode ${{ matrix.xcode }} (${{ matrix.configuration }})
+    runs-on: ${{ matrix.runner }}
     strategy:
       fail-fast: false
       matrix:
         configuration: [debug, release]
+        xcode: [default, "27.1"]
+        include:
+          - xcode: default
+            runner: macos-latest
+          - xcode: "27.1"
+            runner: xcode-27
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
-      - name: Show Swift version
-        run: swift --version
+      - name: Select stable Xcode 27.1
+        if: matrix.xcode == '27.1'
+        run: sudo xcode-select -s /Applications/Xcode_27.1.app/Contents/Developer
 
-      - name: Build (Debug)
-        if: matrix.configuration == 'debug'
-        run: swift build
+      - name: Show Swift version
+        run: |
+          xcodebuild -version
+          swift --version
 
-      - name: Build (Release)
-        if: matrix.configuration == 'release'
-        run: swift build -c release
+      - name: Build
+        run: >-
+          swift build -c ${{ matrix.configuration }}
+          -Xswiftc -strict-concurrency=complete
+          -Xswiftc -warnings-as-errors
 
       - name: Test
-        run: swift test
+        run: >-
+          swift test -c ${{ matrix.configuration }}
+          -Xswiftc -strict-concurrency=complete
+          -Xswiftc -warnings-as-errors
 
       - name: Run parity (if local JS engine is available)
-        if: matrix.configuration == 'debug'
+        if: matrix.configuration == 'debug' && matrix.xcode == 'default'
         shell: bash
         run: |
           if [[ -f ../js-engine/algotrade3/models/src/ATTechnicalIndicators.ts || -f ../algotrade-js-trial/algotrade3/models/src/ATTechnicalIndicators.ts || -f js-engine/algotrade3/models/src/ATTechnicalIndicators.ts ]]; then

.github/workflows/issue-intake.yml

@@ -22,7 +22,7 @@ jobs:
     steps:
       - name: Collect target issues
         id: collect
-        uses: actions/github-script@v7
+        uses: actions/github-script@v9
         with:
           github-token: ${{ github.token }}
           script: |
@@ -50,7 +50,7 @@ jobs:
 
       - name: Assign issues to andywkff
         if: ${{ steps.collect.outputs.count != '0' }}
-        uses: actions/github-script@v7
+        uses: actions/github-script@v9
         env:
           TARGET_ISSUES: ${{ steps.collect.outputs.issues }}
         with:
@@ -69,7 +69,7 @@ jobs:
 
       - name: Add issues to ImpostersLimited Main project
         if: ${{ env.PROJECT_TOKEN != '' && steps.collect.outputs.count != '0' }}
-        uses: actions/github-script@v7
+        uses: actions/github-script@v9
         env:
           TARGET_ISSUES: ${{ steps.collect.outputs.issues }}
         with:

CHANGELOG.md

@@ -30,6 +30,17 @@ https://keepachangelog.com/en/1.1.0/
 - Onboarding/tutorial examples were updated to use current `BKRunSummary` metric access (`summary.metrics.*`) instead of stale `summary.result.*` examples.
 - Compatibility aliases remain non-deprecated for the `v0.1.x` release cycle while canonical docs and examples route new integrations toward the preferred names.
 
+## [0.2.5] - 2026-10-27
+
+### Fixed
+- CI release jobs now run tests in the release configuration.
+
+### Changed
+- Add debug/release CI coverage on stable Xcode 27.1 alongside the default macOS runner, with complete concurrency checking and compiler warnings treated as errors.
+- Allow manual CI dispatch for verification before publication.
+- Update GitHub Actions dependencies to `actions/checkout@v7` and `actions/github-script@v9`.
+- Preserve the Swift 5.9 tools minimum, iOS 16/macOS 13 deployment targets, and existing public API.
+
 ## [0.1.0] - 2026-02-19
 
 ### Added

tasks/todo.md

@@ -1,5 +1,56 @@
 # Active Todo
 
+## 2026-10-27 Publish Maintenance Release v0.2.5
+
+- [x] Inspect the complete diff, real main checkout, and remote releases/tags; derive v0.2.5 from remote v0.2.4.
+- [x] Record release notes, commit the reviewed maintenance changes, and push the feature branch.
+- [x] Run the hosted debug/release matrix with stable Xcode and request Codex review; resolve any failures.
+- [x] Confirm the clean main checkout can fast-forward and prepare the annotated v0.2.5 tag/release metadata.
+- [x] Check remote refs, validate a dry-run main push, and prepare final publication/cleanup checks.
+
+### Verification Plan
+
+- Use the normal hosted macOS runner plus explicitly selected stable Xcode 27.1; run debug/release build/tests with complete concurrency checking and compiler warnings treated as errors.
+- The existing `issue-intake` workflow auto-assigns/issues Project placement. Track this publication in its pull request without creating or assigning an issue.
+- Only workflows, the changelog, and the active todo belong in this release; library API, minimum Swift version, and deployment targets stay unchanged.
+- PR #9 tracks publication. Codex review of 623ab99 completed with no findings. The automatic pull-request event did not create CI runs; add `workflow_dispatch` and dispatch the exact branch explicitly before merging.
+
+### Review
+
+- [CI run 40568157073](https://github.com/ImpostersLimited/BacktestingKit/actions/runs/40568157073) passed all four jobs on 6966ce3: Xcode 26.6 / Swift 6.3.3 and stable Xcode 27.1 / Swift 6.4, both debug and release. Each job passed 145 tests with zero failures and no warnings/errors in the captured logs.
+- Codex review of 6966ce3 completed with no findings or unresolved findings. Actionlint passed after allowing only the documented hosted `xcode-27` label, which actionlint 1.7.12 does not yet recognize.
+- The optional JS parity step skipped because the custom engine is not on the hosted runner. Native iOS device/simulator builds are outside this CI-only release's verification scope.
+- Publication evidence and final remote-ref/cleanup status are tracked in [PR #9](https://github.com/ImpostersLimited/BacktestingKit/pull/9) and the [v0.2.5 release](https://github.com/ImpostersLimited/BacktestingKit/releases/tag/v0.2.5), avoiding a post-tag documentation commit.
+
+## 2026-10-27 Routine Swift Maintenance
+
+- [x] Compare package configuration, installed stable tools, and current official Swift/API release guidance.
+- [x] Verify current Swift compilation with strict Swift 6 diagnostics and compiler warnings treated as errors.
+- [x] Apply only confirmed maintenance fixes, preserving Swift 5.9 and deployment compatibility.
+- [x] Verify workflow syntax/matrix and the final diff; document findings and limitations.
+- [x] Run the full debug/release test suite with stable Xcode 27.1 (verified on hosted CI run 40568157073).
+
+### Scope
+
+- Remote main matches this checkout at ac2ceb4. Apple identifies installed Xcode 27.2 (27B48) as an RC; its initial test run was stopped and is not a stable verification result.
+- Stable Xcode 27.1 (27A9275) is not installed locally. Command Line Tools provides released Swift 6.4 (swiftlang-6.4.0.34.1) and the macOS 26.5 SDK for package compilation checks.
+- No third-party Swift package dependencies. Evaluate new Swift features against actual call sites before changing the minimum toolchain or API.
+- Baseline CI ran debug tests even in its release job and did not enforce complete concurrency checking.
+- Preserve normal macOS-runner compatibility checks and add explicit stable Xcode 27.1 checks on GitHub's `xcode-27` runner; update checkout/github-script actions after reviewing their breaking changes.
+- Swift 6.4's new Swift Build backend warns when `-Xswiftc -swift-version` overrides manifest language settings. CI will use complete concurrency checking in the declared language mode instead of introducing that warning or raising the minimum toolchain.
+- GitHub connector needs reauthentication. The active issue-intake workflow also auto-assigns/adds new issues to a Project, contrary to the current tracking policy; no issue was created.
+
+### Review
+
+- Reviewed Swift 6.4 release/API guidance and current Swift/Foundation call sites. No required library API migration or third-party Swift dependency update was identified. Keep tools-version 5.9, iOS 16, and macOS 13 compatibility; new collection, observation, and async-cleanup features do not justify changing that baseline.
+- CI now builds/tests debug and release on the normal runner and stable Xcode 27.1, with complete concurrency checking and compiler warnings treated as errors. Release jobs now actually run release tests; optional JS parity runs only once.
+- Updated `actions/checkout` v4 -> v7 and `actions/github-script` v7 -> v9. Existing scripts use neither the removed CommonJS import nor conflicting `getOctokit` declarations; their behavior is unchanged.
+- Command Line Tools Swift 6.4 with macOS 26.5 SDK: `swift build -c release --sdk /Library/Developer/CommandLineTools/SDKs/MacOSX26.5.sdk -Xswiftc -swift-version -Xswiftc 6 -Xswiftc -warnings-as-errors` passed. Library/compiler diagnostics were clean; Swift Build emitted language-override, missing CLT linker search-path, and existing `.build/release` symlink warnings. These tool/layout warnings are not a warning-free Xcode result.
+- The freshly built release demo executable exited 0; it discards the simulation result, so this is an executable smoke check, not test-suite evidence.
+- Both YAML files parsed, all three issue-intake scripts parsed under the v9 script parameters, and structural assertions verified all four matrix entries and matching build/test configurations. `git diff --check` passed.
+- Full stable-Xcode tests and hosted workflow execution were subsequently verified in run 40568157073; see the publication review above. Native iOS builds remain outside this CI-only patch. The RC test attempt was interrupted and is not counted as a pass. No issue assignment or Project placement was performed.
+- Sources: https://www.swift.org/blog/swift-6.4-released/ ; https://developer.apple.com/news/releases/?id=10152026a ; https://developer.apple.com/news/releases/?id=10192026g ; https://github.com/actions/checkout/releases ; https://github.com/actions/github-script/releases/tag/v9.0.0 ; https://github.com/actions/runner-images/blob/main/images/macos/xcode-27-arm64-Readme.md .
+
 ## 2026-08-23 Preset Correctness Follow-up
 
 - [completed] Make V3 consume supplied rules for named presets and align canonical crossover periods.