chore(ci): rename benchmark/ branch prefix to chore/ (#1044)

The benchmark workflow was creating PR branches under a benchmark/
prefix that is not in the guard-git.sh allow-list, blocking local
sessions from pushing fixes to those PRs without working around the
hook. Rename all auto-generated branches to use the standard chore/
prefix (chore/bench-v${VERSION}-..., chore/embedding-bench-...) and
drop benchmark/ from the commitlint allow-list since no workflow
creates such branches anymore.

Author: carlos-alm

.github/workflows/benchmark.yml

@@ -82,7 +82,7 @@ jobs:
           git config user.name "github-actions[bot]"
           git config user.email "github-actions[bot]@users.noreply.github.com"
 
-          BRANCH="benchmark/v${VERSION}-$(date +%Y%m%d-%H%M%S)"
+          BRANCH="chore/bench-v${VERSION}-$(date +%Y%m%d-%H%M%S)"
           git checkout -b "$BRANCH"
           git add generated/benchmarks/BUILD-BENCHMARKS.md generated/benchmarks/QUERY-BENCHMARKS.md generated/benchmarks/INCREMENTAL-BENCHMARKS.md README.md
           git commit -m "docs: update performance benchmarks (${VERSION})"
@@ -249,9 +249,9 @@ jobs:
           git config user.email "github-actions[bot]@users.noreply.github.com"
 
           if [ "$VERSION" = "dev" ]; then
-            BRANCH="benchmark/embedding-dev-$(date +%Y%m%d-%H%M%S)"
+            BRANCH="chore/embedding-bench-dev-$(date +%Y%m%d-%H%M%S)"
           else
-            BRANCH="benchmark/embedding-v${VERSION}-$(date +%Y%m%d-%H%M%S)"
+            BRANCH="chore/embedding-bench-v${VERSION}-$(date +%Y%m%d-%H%M%S)"
           fi
           git checkout -b "$BRANCH"
           git add generated/benchmarks/EMBEDDING-BENCHMARKS.md

.github/workflows/commitlint.yml

@@ -32,10 +32,10 @@ jobs:
       - name: Check branch name
         run: |
           BRANCH="${{ github.head_ref }}"
-          PATTERN="^(feat|fix|docs|refactor|test|chore|ci|perf|build|release|dependabot|revert|benchmark)/"
+          PATTERN="^(feat|fix|docs|refactor|test|chore|ci|perf|build|release|dependabot|revert)/"
           if [[ ! "$BRANCH" =~ $PATTERN ]]; then
             echo "::error::Branch name '$BRANCH' does not match the required pattern."
-            echo "Branch names must start with one of: feat/, fix/, docs/, refactor/, test/, chore/, ci/, perf/, build/, release/, dependabot/, revert/, benchmark/"
+            echo "Branch names must start with one of: feat/, fix/, docs/, refactor/, test/, chore/, ci/, perf/, build/, release/, dependabot/, revert/"
             exit 1
           fi
           echo "Branch name '$BRANCH' is valid."