refactor(cli)!: rename all skills and agents to consistent ce- prefix (#503)

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

plugins/compound-engineering/skills/ce-code-review/references/resolve-base.sh

@@ -0,0 +1,100 @@
+#!/usr/bin/env bash
+# Resolve the review base branch and compute the merge-base for ce-code-review.
+# Handles fork-safe remote resolution, PR metadata, and multi-fallback detection.
+#
+# Usage: bash references/resolve-base.sh
+# Output: BASE:<sha> on success, ERROR:<message> on failure.
+#
+# Detects the base branch from (in priority order):
+# 1. PR metadata (base ref + base repo for fork safety)
+# 2. origin/HEAD symbolic ref
+# 3. gh repo view defaultBranchRef
+# 4. Common branch names: main, master, develop, trunk
+
+set -euo pipefail
+
+REVIEW_BASE_BRANCH=""
+PR_BASE_REPO=""
+PR_BASE_REMOTE=""
+BASE_REF=""
+
+# Step 1: Try PR metadata (handles fork workflows)
+if command -v gh >/dev/null 2>&1; then
+  PR_META=$(gh pr view --json baseRefName,url 2>/dev/null || true)
+  if [ -n "$PR_META" ]; then
+    REVIEW_BASE_BRANCH=$(echo "$PR_META" | jq -r '.baseRefName // empty' 2>/dev/null || true)
+    PR_BASE_REPO=$(echo "$PR_META" | jq -r '.url // empty' 2>/dev/null | sed -n 's#https://github.com/\([^/]*/[^/]*\)/pull/.*#\1#p' || true)
+  fi
+fi
+
+# Step 2: Fall back to origin/HEAD
+if [ -z "$REVIEW_BASE_BRANCH" ]; then
+  REVIEW_BASE_BRANCH=$(git symbolic-ref --quiet --short refs/remotes/origin/HEAD 2>/dev/null | sed 's#^origin/##' || true)
+fi
+
+# Step 3: Fall back to gh repo view
+if [ -z "$REVIEW_BASE_BRANCH" ] && command -v gh >/dev/null 2>&1; then
+  REVIEW_BASE_BRANCH=$(gh repo view --json defaultBranchRef --jq '.defaultBranchRef.name' 2>/dev/null || true)
+fi
+
+# Step 4: Fall back to common branch names
+if [ -z "$REVIEW_BASE_BRANCH" ]; then
+  for candidate in main master develop trunk; do
+    if git rev-parse --verify "origin/$candidate" >/dev/null 2>&1 || git rev-parse --verify "$candidate" >/dev/null 2>&1; then
+      REVIEW_BASE_BRANCH="$candidate"
+      break
+    fi
+  done
+fi
+
+# Resolve the base ref from the correct remote (fork-safe)
+if [ -n "$REVIEW_BASE_BRANCH" ]; then
+  if [ -n "$PR_BASE_REPO" ]; then
+    PR_BASE_REMOTE=$(git remote -v | awk "index(\$2, \"github.com:$PR_BASE_REPO\") || index(\$2, \"github.com/$PR_BASE_REPO\") {print \$1; exit}")
+    if [ -n "$PR_BASE_REMOTE" ]; then
+      BASE_REF=$(git rev-parse --verify "$PR_BASE_REMOTE/$REVIEW_BASE_BRANCH" 2>/dev/null || true)
+      if [ -z "$BASE_REF" ]; then
+        git fetch --no-tags "$PR_BASE_REMOTE" "$REVIEW_BASE_BRANCH:refs/remotes/$PR_BASE_REMOTE/$REVIEW_BASE_BRANCH" 2>/dev/null || git fetch --no-tags "$PR_BASE_REMOTE" "$REVIEW_BASE_BRANCH" 2>/dev/null || true
+        BASE_REF=$(git rev-parse --verify "$PR_BASE_REMOTE/$REVIEW_BASE_BRANCH" 2>/dev/null || true)
+      fi
+    fi
+  fi
+  if [ -z "$BASE_REF" ]; then
+    # Only try origin if it exists as a remote; otherwise skip to avoid
+    # confusing errors in fork setups where origin points at the user's fork.
+    if git remote get-url origin >/dev/null 2>&1; then
+      BASE_REF=$(git rev-parse --verify "origin/$REVIEW_BASE_BRANCH" 2>/dev/null || true)
+      if [ -z "$BASE_REF" ]; then
+        git fetch --no-tags origin "$REVIEW_BASE_BRANCH:refs/remotes/origin/$REVIEW_BASE_BRANCH" 2>/dev/null || git fetch --no-tags origin "$REVIEW_BASE_BRANCH" 2>/dev/null || true
+        BASE_REF=$(git rev-parse --verify "origin/$REVIEW_BASE_BRANCH" 2>/dev/null || true)
+      fi
+    fi
+    # Fall back to a bare local ref only if remote resolution failed
+    if [ -z "$BASE_REF" ]; then
+      BASE_REF=$(git rev-parse --verify "$REVIEW_BASE_BRANCH" 2>/dev/null || true)
+    fi
+  fi
+fi
+
+# Compute merge-base
+if [ -n "$BASE_REF" ]; then
+  BASE=$(git merge-base HEAD "$BASE_REF" 2>/dev/null) || BASE=""
+  if [ -z "$BASE" ] && [ "$(git rev-parse --is-shallow-repository 2>/dev/null || echo false)" = "true" ]; then
+    if git remote get-url origin >/dev/null 2>&1; then
+      git fetch --no-tags --unshallow origin 2>/dev/null || true
+      BASE=$(git merge-base HEAD "$BASE_REF" 2>/dev/null) || BASE=""
+    fi
+    if [ -z "$BASE" ] && [ -n "$PR_BASE_REMOTE" ] && [ "$PR_BASE_REMOTE" != "origin" ]; then
+      git fetch --no-tags --unshallow "$PR_BASE_REMOTE" 2>/dev/null || true
+      BASE=$(git merge-base HEAD "$BASE_REF" 2>/dev/null) || BASE=""
+    fi
+  fi
+else
+  BASE=""
+fi
+
+if [ -n "$BASE" ]; then
+  echo "BASE:$BASE"
+else
+  echo "ERROR:Unable to resolve review base branch locally. Fetch the base branch and rerun, or provide a PR number so the review scope can be determined from PR metadata."
+fi