fix: handle case when no documents are found in configuration

[butschster]

[ErrorException]
foreach() argument must be of type array|object, null given
in phar:///usr/local/bin/ctx/src/Console/GenerateCommand.php:101

[codecov]

Codecov Report

Attention: Patch coverage is 88.00000% with 15 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/McpServer/Console/MCPServerCommand.php	0.00%	6 Missing ⚠️
src/Console/GenerateCommand.php	92.95%	5 Missing ⚠️
src/Application/Bootloader/VariableBootloader.php	75.00%	1 Missing ⚠️
src/Config/Import/Source/Url/UrlImportSource.php	0.00%	1 Missing ⚠️
src/Directories.php	90.00%	1 Missing ⚠️
src/Lib/PathFilter/ExcludePathFilter.php	50.00%	1 Missing ⚠️

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[Copilot]

Pull Request Overview

This PR fixes the issue where an error was thrown when no documents were found in the configuration by ensuring that test fixtures exist and updating workflow configurations for proper PHP extension support.

• Added YAML fixtures for document configuration handling ("basic", "filtered", and "content-filter").
• Updated GitHub workflow configuration files to include the "fileinfo" PHP extension.

Reviewed Changes

Copilot reviewed 44 out of 57 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/fixtures/Console/GenerateCommand/FileSource/filtered.yaml	Added fixture for filtered file source test
tests/fixtures/Console/GenerateCommand/FileSource/content-filter.yaml	Added fixture for testing content filtering
tests/fixtures/Console/GenerateCommand/FileSource/basic.yaml	Added basic file source test fixture
.github/workflows/testing.yml	Updated PHP extensions by adding "fileinfo"
.github/workflows/static-analysis.yml	Updated PHP extensions by adding "fileinfo"
.github/workflows/security.yml	Updated PHP extensions by adding "fileinfo"
.github/workflows/refactoring.yml	Updated PHP extensions by adding "fileinfo"

Files not reviewed (13)

• composer.json: Language not supported
• src/Application/Bootloader/VariableBootloader.php: Language not supported
• src/Config/Import/Source/Url/UrlImportSource.php: Language not supported
• src/Config/Reader/YamlReader.php: Language not supported
• src/Console/GenerateCommand.php: Language not supported
• src/Directories.php: Language not supported
• src/DirectoriesInterface.php: Language not supported
• src/Document/Compiler/CompiledDocument.php: Language not supported
• src/Document/Compiler/DocumentCompiler.php: Language not supported
• src/McpServer/Console/MCPServerCommand.php: Language not supported
• src/McpServer/Prompt/Extension/TemplateResolver.php: Language not supported
• src/McpServer/Prompt/PromptRegistry.php: Language not supported
• tests/fixtures/Console/GenerateCommand/FileSource/TestClass.php: Language not supported