fix(ci): replace the retired macos-13 runner label with macos-15-intel

GitHub retired the macOS 13 labels on 2025-12-04. A job that requests a retired
label is not rejected -- it queues for a machine that will never arrive -- so
the macos-x64 leg sat pending through every CI run and would have hung the
release's darwin-x64 build and its install verification with nothing anywhere
saying why. macos-15-intel is the last x86_64 macOS image Actions offers.

Author: GriffinCanCode

.github/workflows/ci.yml

@@ -55,7 +55,12 @@ jobs:
           - { name: linux-arm64, os: ubuntu-24.04-arm,  node: 22 }
           - { name: macos-arm64, os: macos-latest,      node: 18 }
           - { name: macos-arm64, os: macos-latest,      node: 22 }
-          - { name: macos-x64,   os: macos-13,          node: 22 }
+          # macos-15-intel, not macos-13: GitHub retired the macOS 13 labels on
+          # 2025-12-04, and a job asking for a retired label is not rejected --
+          # it queues for a machine that will never arrive, so this leg sat
+          # pending through every run and took the all-green gate with it.
+          # This is the last x86_64 macOS image Actions will offer.
+          - { name: macos-x64,   os: macos-15-intel,    node: 22 }
           - { name: windows-x64, os: windows-latest,    node: 20 }
           - { name: windows-x64, os: windows-latest,    node: 22 }
 

.github/workflows/release.yml

@@ -116,7 +116,11 @@ jobs:
         include:
           - { host: ubuntu-latest,    target: x86_64-unknown-linux-gnu,   native: true }
           - { host: ubuntu-24.04-arm, target: aarch64-unknown-linux-gnu,  native: true }
-          - { host: macos-13,         target: x86_64-apple-darwin,        native: true }
+          # macos-15-intel is the last x86_64 macOS image Actions offers; the
+          # macos-13 labels were retired on 2025-12-04 and a job requesting one
+          # queues forever rather than failing, which would hang the release
+          # with nothing anywhere saying why.
+          - { host: macos-15-intel,   target: x86_64-apple-darwin,        native: true }
           - { host: macos-latest,     target: aarch64-apple-darwin,       native: true }
           - { host: windows-latest,   target: x86_64-pc-windows-msvc,     native: true }
           # No aarch64 Windows runner exists yet, so this one is cross-built
@@ -374,7 +378,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, ubuntu-24.04-arm, macos-latest, macos-13, windows-latest]
+        os: [ubuntu-latest, ubuntu-24.04-arm, macos-latest, macos-15-intel, windows-latest]
     steps:
       - uses: actions/setup-node@v7
         with: { node-version: 22 }