fix(vat): resolve non-deterministic ORDER BY in TestVAT_ToggleLifecycle

The phase 3 payment query used ORDER BY created_at DESC LIMIT 1.
Within a single transaction, NOW() returns the same timestamp for all
inserts, making the ordering non-deterministic when other parallel tests
insert payment rows with the same timestamp. Fix by parsing the
response's payment ID and querying by it directly.

Also revert eslint.config.js back to error-level rules for all categories
(removing the previous 'warn' overrides).

frontend/eslint.config.js

@@ -27,16 +27,16 @@ export default defineConfig(
 			'no-undef': 'off',
 			// Allow underscore prefix for unused variables
 			'@typescript-eslint/no-unused-vars': [
-				'warn',
+				'error',
 				{
 					argsIgnorePattern: '^_',
 					varsIgnorePattern: '^_',
 					caughtErrorsIgnorePattern: '^_'
 				}
 			],
-			'@typescript-eslint/no-explicit-any': 'warn',
-			'no-useless-escape': 'warn',
-			'no-empty': 'warn'
+			'@typescript-eslint/no-explicit-any': 'error',
+			'no-useless-escape': 'error',
+			'no-empty': 'error'
 		}
 	},
 	{
@@ -50,15 +50,6 @@ export default defineConfig(
 			}
 		},
 		rules: {
-			'svelte/no-navigation-without-resolve': 'warn',
-			'svelte/no-useless-mustaches': 'warn',
-			'svelte/no-unused-props': 'warn',
-			'svelte/no-dom-manipulating': 'warn',
-			'svelte/no-unnecessary-state-wrap': 'warn',
-			'svelte/prefer-writable-derived': 'warn',
-			'svelte/prefer-svelte-reactivity': 'warn',
-			'svelte/valid-prop-names-in-kit-pages': 'warn',
-			'svelte/require-each-key': 'warn'
 		}
 	}
 );