fix(claude): add tool availability guards and fix skill docs

Add jq availability checks to hook scripts (block-rules-yml.sh,
post-edit-write.sh) and wrap actionlint call in command -v guard,
consistent with project rules #2 and #10. Fix validate skill to
reflect actual make all pipeline order and note that make test
runs separately.

.claude/hooks/block-rules-yml.sh

@@ -2,6 +2,11 @@
 set -eu
 
 # Read JSON input from stdin to get the file path
+if ! command -v jq >/dev/null 2>&1; then
+  echo "Error: jq is required but not found" >&2
+  exit 1
+fi
+
 INPUT=$(cat)
 FILE_PATH=$(echo "$INPUT" | jq -r '.tool_input.file_path // .tool_input.filePath // empty')
 

.claude/hooks/post-edit-write.sh

@@ -2,6 +2,11 @@
 set -eu
 
 # Read JSON input from stdin to get the file path
+if ! command -v jq >/dev/null 2>&1; then
+  echo "Error: jq is required but not found" >&2
+  exit 1
+fi
+
 INPUT=$(cat)
 FILE_PATH=$(echo "$INPUT" | jq -r '.tool_input.file_path // .tool_input.filePath // empty')
 
@@ -34,6 +39,8 @@ esac
 # Run actionlint on action.yml files
 case "$FILE_PATH" in
 */action.yml)
+  if command -v actionlint >/dev/null 2>&1; then
     actionlint "$FILE_PATH" 2>&1 || true
+  fi
   ;;
 esac

.claude/skills/validate/SKILL.md

@@ -12,7 +12,9 @@ Run the complete validation pipeline:
 make all
 ```
 
-This runs in order: `docs` -> `format` -> `lint` -> `test`
+This runs in order: `install-tools` -> `update-validators` -> `docs` -> `update-catalog` -> `format` -> `lint` -> `precommit`
+
+**Note:** `make test` must be run separately.
 
 ## If validation fails