docs: better downgrade prompt

Author: COil

agents/downgrade-to-symfony-7-4-LTS.md

@@ -10,16 +10,25 @@ Follow the next steps in order to downgrade MicroSymfony from Symfony 8 to Symfo
 In the `composer.json` file:
 
 * Replace the required PHP version from `>=8.4` to `>=8.2`
-* Replace all Symfony `8.0` constraints by `7.4`
+* Replace all Symfony `~8.0.0` version constraints with `~7.4.0`
 * Update the `extra.symfony.require` constraint from `"8.0.*"` to `"7.4.*"`
 * Run `composer update` and verify that it completes without errors, that no dependency
   conflicts are reported, and that Symfony packages are resolved to version `7.4.*`
 
 
+## Compatibility Fixes
+
+* In `src/Entity/User.php`, add the `eraseCredentials(): void` method required by
+  Symfony 7.4's `UserInterface` (this method was removed from the interface in 8.0)
+* Add test coverage for the new method in the corresponding unit test
+
+
 ## Checks
 
 * Run `bin/console --version` and check that `Symfony 7.4` is returned
 * Run `make ci` and capture the logs in a temporary `ci.log` file
-* Ensure that all the tests pass
-* Gather the Symfony deprecations logs from the `make ci` logs to the `deprecations.log` file
+* Ensure that all tests pass and the full CI pipeline succeeds (tests, coverage,
+  PHPStan, CS-Fixer, linting)
+* Extract the Symfony deprecation warnings from the PHPUnit output in `ci.log`
+  into a `deprecations.log` file
 * Delete the `ci.log` file