Truncate oversized log records

[timkelty]

Caps formatted Monolog records at 240 KiB before Craft streams them to Bref’s PHP-FPM runtime. The decorator preserves UTF-8 and terminal line endings while retaining each handler’s existing formatter, with focused CRLF coverage.

[Copilot]

Pull request overview

Introduces a Monolog formatter decorator that caps oversized formatted log output at 240 KiB (to stay under Bref/PHP-FPM log limits) and wires it into the Cloud MonologTarget handler pipeline.

Changes:

• Added craft\cloud\TruncatingFormatter to truncate oversized formatted records while preserving UTF-8 and terminal line endings.
• Wrapped existing Monolog handler formatters with TruncatingFormatter during MonologTarget construction in AppConfig.
• Added a focused unit test covering truncation behavior and CRLF preservation.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/TruncatingFormatter.php	New formatter decorator that truncates formatted log output to a safe byte limit.
src/AppConfig.php	Wraps handler formatters with the truncating decorator when creating MonologTarget.
tests/unit/TruncatingFormatterTest.php	Adds unit coverage for truncation, UTF-8 validity, and CRLF preservation.

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