fix(ci/apple): locate Homebrew explicitly for the cmake install

The self-hosted macOS runner runs steps with `bash --noprofile --norc`, so
Homebrew's bin dir is not on PATH — the previous `brew install cmake` died with
`brew: command not found` (exit 127). Find brew at its known prefix, install cmake
only if missing, and export the brew bin dir to $GITHUB_PATH so the subsequent
xcframework build (audiopus_sys → vendored libopus) actually finds `cmake`.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.gitea/workflows/apple.yml

@@ -37,7 +37,15 @@ jobs:
       # system Opus — so the xcframework is self-contained (no runtime libopus.dylib on end-user Macs).
       # CMake must be on PATH; install it self-healing on a fresh runner.
       - name: CMake (for the vendored libopus audiopus_sys builds)
-        run: command -v cmake >/dev/null || brew install cmake
+        run: |
+          # Runner steps run with `bash --noprofile --norc`, so Homebrew's bin dir isn't on PATH —
+          # locate brew explicitly, install cmake if missing, and export its bin dir to GITHUB_PATH so
+          # the xcframework build step (audiopus_sys → vendored libopus) finds `cmake`.
+          for B in /opt/homebrew/bin/brew /usr/local/bin/brew; do [ -x "$B" ] && BREW="$B" && break; done
+          if [ -z "$BREW" ]; then echo "::error::Homebrew not found on the runner"; exit 1; fi
+          BREW_BIN="$(dirname "$BREW")"; export PATH="$BREW_BIN:$PATH"
+          command -v cmake >/dev/null || "$BREW" install cmake
+          echo "$BREW_BIN" >> "$GITHUB_PATH"
 
       - name: Build PunktfunkCore.xcframework
         run: bash scripts/build-xcframework.sh
@@ -80,7 +88,15 @@ jobs:
 
       # See the swift job: audiopus_sys (via the in-core Opus decode) builds vendored libopus with CMake.
       - name: CMake (for the vendored libopus audiopus_sys builds)
-        run: command -v cmake >/dev/null || brew install cmake
+        run: |
+          # Runner steps run with `bash --noprofile --norc`, so Homebrew's bin dir isn't on PATH —
+          # locate brew explicitly, install cmake if missing, and export its bin dir to GITHUB_PATH so
+          # the xcframework build step (audiopus_sys → vendored libopus) finds `cmake`.
+          for B in /opt/homebrew/bin/brew /usr/local/bin/brew; do [ -x "$B" ] && BREW="$B" && break; done
+          if [ -z "$BREW" ]; then echo "::error::Homebrew not found on the runner"; exit 1; fi
+          BREW_BIN="$(dirname "$BREW")"; export PATH="$BREW_BIN:$PATH"
+          command -v cmake >/dev/null || "$BREW" install cmake
+          echo "$BREW_BIN" >> "$GITHUB_PATH"
 
       - name: Build PunktfunkCore.xcframework (mac + iOS slices)
         run: BUILD_IOS=1 bash scripts/build-xcframework.sh

.gitea/workflows/release.yml

@@ -121,7 +121,15 @@ jobs:
       # The in-core Opus decode (surround) pulls audiopus_sys, which builds a vendored static libopus
       # via CMake — keep the xcframework self-contained (no runtime libopus.dylib on end-user devices).
       - name: CMake (for the vendored libopus audiopus_sys builds)
-        run: command -v cmake >/dev/null || brew install cmake
+        run: |
+          # Runner steps run with `bash --noprofile --norc`, so Homebrew's bin dir isn't on PATH —
+          # locate brew explicitly, install cmake if missing, and export its bin dir to GITHUB_PATH so
+          # the xcframework build step (audiopus_sys → vendored libopus) finds `cmake`.
+          for B in /opt/homebrew/bin/brew /usr/local/bin/brew; do [ -x "$B" ] && BREW="$B" && break; done
+          if [ -z "$BREW" ]; then echo "::error::Homebrew not found on the runner"; exit 1; fi
+          BREW_BIN="$(dirname "$BREW")"; export PATH="$BREW_BIN:$PATH"
+          command -v cmake >/dev/null || "$BREW" install cmake
+          echo "$BREW_BIN" >> "$GITHUB_PATH"
 
       - name: Build PunktfunkCore.xcframework (mac + iOS + tvOS)
         # tvOS is a tier-3 target (nightly -Zbuild-std): slow on the first build, then cached on