refactor: 💡 remove orphaned files

scripts/git-workflow/assert-on-branch.sh

@@ -1,36 +0,0 @@
-#!/bin/bash
-# Assert all 3 repos are on the given branch.
-# Exit 0 if all match. Exit 1 with details if any mismatch (including detached HEAD).
-# Usage: ./assert-on-branch.sh <branch-name>
-
-set -e
-
-SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-# shellcheck source=./repos.sh
-source "$SCRIPT_DIR/repos.sh"
-
-if [ $# -ne 1 ]; then
-    echo "Usage: $0 <branch-name>" >&2
-    exit 2
-fi
-
-WANT="$1"
-mismatched=()
-for repo in "${REPOS[@]}"; do
-    p=$(repo_path "$repo")
-    cur=$(git -C "$p" branch --show-current)
-    if [ "$cur" != "$WANT" ]; then
-        mismatched+=("$repo: on '${cur:-DETACHED-HEAD}' (want '$WANT')")
-    fi
-done
-
-if [ ${#mismatched[@]} -eq 0 ]; then
-    echo "All 3 repos on branch: $WANT"
-    exit 0
-fi
-
-echo "Branch mismatch:" >&2
-for line in "${mismatched[@]}"; do
-    echo "  $line" >&2
-done
-exit 1