…refixes

- Remove unused @phpstan-ignore-line comment in Color.php
- Remove unnecessary parentheses around instanceof check in Api.php

https://claude.ai/code/session_01CvJgpmeTG9ZoGmTKhhrJjZ

…n-cs-fixer-Qy0fp

Fix PHPStan and PHP CS Fixer issues

* Add PHP type hints to 3.0 docs and align with actual code signatures

- advanced-usage.md: Add all missing parameter types and return types
  to match Server class (string, bool, void, FilesystemOperator, etc.),
  fix wrong method names (setManipulators/getManipulators → setDefaults/
  getDefaults), add setPresets/getPresets, fix nullable ResponseFactory,
  fix typo "reponse" → "response"
- setup.md: Fix ImageManager instantiation to use static factory method
  (ImageManager::gd()) instead of removed constructor pattern, add
  missing Flip manipulator to the manual setup example
- responses.md: Add missing `string` type hint on $path parameter in
  ResponseFactoryInterface::create()
- watermarks.md: Fix outdated Flysystem adapter class name
  (Local → LocalFilesystemAdapter)

https://claude.ai/code/session_01GZAAeRMUyZXA4eXUtczCvj

* Use fully qualified class names in 3.0 doc PHP examples

- advanced-usage.md: FilesystemOperator → League\Flysystem\FilesystemOperator,
  ApiInterface → League\Glide\Api\ApiInterface,
  ResponseFactoryInterface → League\Glide\Responses\ResponseFactoryInterface
- setup.md: SymfonyResponseFactory → League\Glide\Responses\SymfonyResponseFactory
- watermarks.md: ServerFactory → League\Glide\ServerFactory,
  Filesystem → League\Flysystem\Filesystem,
  LocalFilesystemAdapter → League\Flysystem\Local\LocalFilesystemAdapter

https://claude.ai/code/session_01GZAAeRMUyZXA4eXUtczCvj

* Add leading backslash to all inline FQCNs in doc PHP examples

Prefix all fully qualified class names with `\` when used inline
in PHP code blocks (not covered by `use` statements). This ensures
the code examples are valid PHP when used outside a namespace.

https://claude.ai/code/session_01GZAAeRMUyZXA4eXUtczCvj

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Co-authored-by: Claude <noreply@anthropic.com>

Doc fixes

generate and self host the documentation images

Update test suite

Allow mount identifier, for MountManager of FlySystem library, into prefixes