refactor: rename lib/ to core/ for clearer core-module separation

Rename the top-level lib/ directory to core/ so the project root
immediately communicates which code is core platform and which lives
in modules/. PHP namespaces (MintyPHP\*) are unchanged — only the
Composer PSR-4 path mapping moves from lib/ to core/.

Module-internal lib/ directories (modules/*/lib/) are untouched.

Updated across the full stack:
- composer.json PSR-4 mapping
- bootstrap entry points (web/index.php, bin/*, tests/bootstrap.php)
- tooling configs (phpstan.neon, phpunit.xml, php-cs-fixer)
- 26 architecture contract tests
- enforcement-policy, guard-catalog, quality-gates
- all documentation (CLAUDE.md, README, 25 docs/, .agents/skills/)
- bin/qa-extended.sh search paths
- .claude/settings.local.json permission paths

Workflow: .agents/runs/CORE-LIB-RENAME-001/ (Analyst → Planner →
Executor → Code Review (4 findings fixed) → Security Review →
Acceptance Test → Finalizer)

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

bin/cli-bootstrap.php

@@ -18,10 +18,10 @@ function cliBootstrapApp(string $channel = 'cli', string $path = 'bin/cli'): App
         chdir(__DIR__ . '/..');
         require_once 'vendor/autoload.php';
         require_once 'config/config.php';
-        require_once 'lib/Support/helpers.php';
+        require_once 'core/Support/helpers.php';
 
         /** @var AppContainer $resolved */
-        $resolved = require 'lib/App/registerContainer.php';
+        $resolved = require 'core/App/registerContainer.php';
         setAppContainer($resolved);
 
         $container = $resolved;

bin/console

@@ -11,7 +11,7 @@ declare(strict_types=1);
  *   php bin/console list
  *   php bin/console <command> --help
  *
- * Commands are auto-discovered from lib/Console/Commands/.
+ * Commands are auto-discovered from core/Console/Commands/.
  * To add a new command, create a class extending Command in that directory.
  */
 
@@ -20,6 +20,6 @@ require_once __DIR__ . '/../vendor/autoload.php';
 use MintyPHP\Console\ConsoleApplication;
 
 $app = new ConsoleApplication();
-$app->discoverCommands(__DIR__ . '/../lib/Console/Commands');
+$app->discoverCommands(__DIR__ . '/../core/Console/Commands');
 
 exit($app->run($argv));

bin/helpdesk-diagnose.php

@@ -13,9 +13,9 @@ declare(strict_types=1);
 chdir(__DIR__ . '/..');
 require 'vendor/autoload.php';
 require 'config/config.php';
-require 'lib/Support/helpers.php';
+require 'core/Support/helpers.php';
 
-$container = require 'lib/App/registerContainer.php';
+$container = require 'core/App/registerContainer.php';
 setAppContainer($container);
 
 use MintyPHP\Module\Helpdesk\Service\BcODataGateway;

bin/helpdesk-explore-entities.php

@@ -17,9 +17,9 @@ declare(strict_types=1);
 chdir(__DIR__ . '/..');
 require 'vendor/autoload.php';
 require 'config/config.php';
-require 'lib/Support/helpers.php';
+require 'core/Support/helpers.php';
 
-$container = require 'lib/App/registerContainer.php';
+$container = require 'core/App/registerContainer.php';
 setAppContainer($container);
 
 use MintyPHP\Module\Helpdesk\Service\HelpdeskSettingsGateway;

bin/qa-extended.sh

@@ -14,9 +14,9 @@ bin/qa-required.sh
 
 # QG-004 (non-blocking in phase 1): structural checks as warning-only signal
 if command -v rg >/dev/null 2>&1; then
-  c1="$( (rg 'new\\s+[^\\s(]+Factory\\(' lib/Service || true) | wc -l | tr -d '[:space:]')"
-  c2="$( (rg --glob '!**/*Factory.php' 'new\\s+[^\\s(]+(Service|Gateway|Repository)\\(' lib/Service || true) | wc -l | tr -d '[:space:]')"
-  c3="$( (rg "\\b(accessServicesFactory|directoryServicesFactory|userServicesFactory|authServicesFactory|tenantServicesFactory|settingServicesFactory|userRepositoryFactory|authRepositoryFactory|authGatewayFactory)\\(" pages lib templates web || true) | wc -l | tr -d '[:space:]')"
+  c1="$( (rg 'new\\s+[^\\s(]+Factory\\(' core/Service || true) | wc -l | tr -d '[:space:]')"
+  c2="$( (rg --glob '!**/*Factory.php' 'new\\s+[^\\s(]+(Service|Gateway|Repository)\\(' core/Service || true) | wc -l | tr -d '[:space:]')"
+  c3="$( (rg "\\b(accessServicesFactory|directoryServicesFactory|userServicesFactory|authServicesFactory|tenantServicesFactory|settingServicesFactory|userRepositoryFactory|authRepositoryFactory|authGatewayFactory)\\(" pages core templates web || true) | wc -l | tr -d '[:space:]')"
   c4="$( (rg -n 'new\\s+[^\\s(]+(Service|Gateway|Repository)\\(' pages -g '*.php' || true) | wc -l | tr -d '[:space:]')"
   c5="$( (rg -n '\\bDB::' pages -g '*.php' || true) | wc -l | tr -d '[:space:]')"
   c6="$( (rg -n 'app\\([^\\n]*Factory::class\\)->create' pages/admin -g '*.php' || true) | wc -l | tr -d '[:space:]')"