fix: correct Claude Code hooks schema to use nested hooks array with jq stdin parsing

The hooks were using an invalid flat command format and nonexistent
$CLAUDE_FILE_PATH env var. Fixed to use the required nested hooks array
structure and parse file_path from stdin JSON via jq.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: ankurdotb

.claude/settings.json

@@ -1,16 +1,26 @@
 {
-  "hooks": {
-    "PreToolUse": [
-      {
-        "matcher": "Edit|Write",
-        "command": "echo \"$CLAUDE_FILE_PATH\" | grep -qE '(package-lock\\.json|src/database/migrations/)' && echo 'BLOCK: Do not edit generated files (lock files, migrations)' && exit 1 || exit 0"
-      }
-    ],
-    "PostToolUse": [
-      {
-        "matcher": "Edit|Write",
-        "command": "npx prettier --write \"$CLAUDE_FILE_PATH\" 2>/dev/null || true"
-      }
-    ]
-  }
+	"hooks": {
+		"PreToolUse": [
+			{
+				"matcher": "Edit|Write",
+				"hooks": [
+					{
+						"type": "command",
+						"command": "FILE=$(jq -r '.tool_input.file_path') && echo \"$FILE\" | grep -qE '(package-lock\\.json|src/database/migrations/)' && echo 'BLOCK: Do not edit generated files (lock files, migrations)' && exit 1 || exit 0"
+					}
+				]
+			}
+		],
+		"PostToolUse": [
+			{
+				"matcher": "Edit|Write",
+				"hooks": [
+					{
+						"type": "command",
+						"command": "jq -r '.tool_input.file_path' | xargs npx prettier --write 2>/dev/null || true"
+					}
+				]
+			}
+		]
+	}
 }