refactor: extract shared code from bin/ scripts and remove legacy scheduler runner

- Extract ModuleManifestLoader for standalone manifest loading (used by
  module-deactivate and ValidateCommand)
- Extract SqlStatementParser, ModuleMigrationRepository, and
  ModuleMigrationService from bin/module-migrate.php to enforce strict
  layering (SQL in repository, orchestration in service)
- Delete bin/scheduler-run.php (fully superseded by bin/console scheduler:run)
- Update docs and test fixtures to reference bin/console

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

lib/Console/Commands/Module/ValidateCommand.php

@@ -9,6 +9,7 @@ use MintyPHP\App\Module\Contracts\ModuleDeactivationHandler;
 use MintyPHP\App\Module\Contracts\SearchResourceProvider;
 use MintyPHP\App\Module\Contracts\SessionProvider;
 use MintyPHP\App\Module\ModuleManifest;
+use MintyPHP\App\Module\ModuleManifestLoader;
 use MintyPHP\Console\Command;
 use MintyPHP\Service\Access\AuthorizationPolicyInterface;
 
@@ -140,21 +141,11 @@ final class ValidateCommand extends Command
             return [["Manifest not found: modules/{$moduleId}/module.php"], []];
         }
 
-        // 3. Manifest parses
+        // 3+4. Load and validate manifest
         try {
-            $raw = require $manifestFile;
-            if (!is_array($raw)) {
-                return [['Manifest must return an array'], []];
-            }
+            $manifest = ModuleManifestLoader::loadFromDisk($modulesDir, $moduleId);
         } catch (\Throwable $e) {
-            return [['Manifest parse error: ' . $e->getMessage()], []];
-        }
-
-        // 4. ModuleManifest validates
-        try {
-            $manifest = ModuleManifest::fromArray($raw, $moduleDir);
-        } catch (\Throwable $e) {
-            return [['Manifest validation error: ' . $e->getMessage()], []];
+            return [['Manifest load/validation error: ' . $e->getMessage()], []];
         }
 
         // Register module lib/ with autoloader so we can resolve classes