fix(tooling): harden internode transport benchmark setup (#3037)

* refactor(config): centralize internode transport constants

* fix(bench): guard all ripgrep calls behind dry-run check

Move require_cmd rg and metrics collection inside the non-dry-run
path so that --dry-run works on hosts without rg installed.

* feat(tooling): cross-platform protoc setup for Linux and macOS

Make install-protoc.sh support Linux (x86_64, aarch64) alongside
macOS, and bump CI protoc from 29.3 to 33.1 to match the version
required by the gproto build script.

* fix(bench): record internode baseline error counts

* fix(skill): correct YAML frontmatter formatting for release-version-bump

* chore(ci): bump protoc version to 34.1

* fix(tooling): bump protoc 33.1 to 34.1 in install script, restore SKILL.md description

---------

Co-authored-by: Henry Guo <marshawcoco@users.noreply.github.com>

.github/actions/setup/action.yml

@@ -59,7 +59,7 @@ runs:
     - name: Install protoc
       uses: rustfs/setup-protoc@v3.0.1
       with:
-        version: "29.3"
+        version: "34.1"
         repo-token: ${{ github.token }}
 
     - name: Install flatc