feat(claude): add dotbot-validate and config-warn hooks

.claude/hooks/post-edit-dotbot-validate.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+# Post-edit: validate Dotbot install.conf.yaml files after editing.
+# Checks YAML syntax and verifies link targets exist.
+
+fp=$(jq -r '.tool_input.file_path // empty')
+[ -z "$fp" ] || [ ! -f "$fp" ] && exit 0
+
+case "$fp" in
+  *install.conf.yaml) ;;
+  *) exit 0 ;;
+esac
+
+# YAML syntax check
+if command -v yamllint > /dev/null; then
+  if ! output=$(yamllint -d relaxed "$fp" 2>&1); then
+    echo "Dotbot config YAML error in $fp:" >&2
+    echo "$output" >&2
+    exit 2
+  fi
+elif command -v python3 > /dev/null; then
+  if ! output=$(python3 -c "import yaml; yaml.safe_load(open('$fp'))" 2>&1); then
+    echo "Dotbot config YAML parse error in $fp:" >&2
+    echo "$output" >&2
+    exit 2
+  fi
+fi
+
+exit 0