Display entire exception chain in error templates

[giuscris]

This pull request improves error handling and debugging in both the core and panel error controllers, enhances the display of exception traces in debug views, and updates the styling for error debug details. The main changes include support for chained exceptions in error logs and debug UIs, a refactor of how stack traces are resolved and passed to views, and visual refinements for better readability.

Error handling and exception trace improvements:

• Updated both formwork/src/Controllers/ErrorsController.php and formwork/src/Panel/Controllers/ErrorsController.php to log chained exceptions (using getPrevious()) in a format similar to PHP's native exception handler, and refactored the getTrace method to handle null values and return an empty array if needed. The stack trace is now passed as a callable (traceResolver) instead of a precomputed array, enabling support for multiple exceptions in the view. [1] [2] [3] [4]

Debug view enhancements:

• Updated error debug views in formwork/views/errors/partials/debug.php and panel/views/errors/error.php to display all exceptions in a chain (using a while loop over getPrevious()), and to use the new traceResolver for resolving stack traces per exception. [1] [2] [3]

Styling improvements:

• Adjusted the margin and background color for .error-debug-details in both the core and panel stylesheets for better visual consistency and readability, including improved dark mode support. [1] [2]
• Slightly tweaked the dark color scheme background for code dumps in formwork/src/Debug/CodeDumper.php for better contrast.

[Copilot]

Pull request overview

This PR enhances Formwork’s error debugging experience by rendering full exception chains (including previous exceptions) in both the core and panel error pages, and by refactoring how stack traces are resolved so each exception can display its own trace.

Changes:

• Update error templates to iterate through exception chains and render a per-exception stack trace via a traceResolver callable.
• Refactor controllers to pass a traceResolver callable instead of a precomputed stackTrace array, and adjust trace extraction to accept null.
• Improve error debug UI styling (spacing + dark mode tweaks) and adjust dark-mode code block background color.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
panel/views/errors/error.php	Renders full exception chains and resolves traces dynamically in the panel error UI.
panel/src/scss/components/_errors.scss	Tweaks spacing and adds dark-scheme background for debug details.
formwork/views/errors/partials/header.php	Adjusts debug details spacing in the core error header styles.
formwork/views/errors/partials/debug.php	Renders full exception chains and resolves traces dynamically in the core debug partial.
formwork/src/Panel/Controllers/ErrorsController.php	Passes traceResolver, updates trace extraction signature, and logs chained exceptions.
formwork/src/Debug/CodeDumper.php	Adjusts dark-mode code background color.
formwork/src/Controllers/ErrorsController.php	Passes traceResolver, updates trace extraction signature, and logs chained exceptions.

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