This PR adds [LeanCode](https://leancode.co) (a Flutter development company) and three of its contributors to the AUTHORS file.

Contributors added:
- **LeanCode** — company
- **Piotr Denert** (GitHub: [pdenert](https://github.com/pdenert)) — PRs in flutter/packages
- **Marcin Chudy** (GitHub: [mchudy](https://github.com/mchudy)) — PRs in flutter/packages
- **Paweł Jakubowski** (GitHub: [FirentisTFW](https://github.com/FirentisTFW)) —  PRs in flutter/packages

No issue is required as this is a trivial AUTHORS file update.

## Pre-Review Checklist

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…#11133)

We change the Indent class to not accept an IOSink. Instead, it manages all writes in its own StringBuffer, and then its `toString()` method can be used to extract out the written text.

This dramatically reduces the number of write operations sent to the OS. Functionally, it is a no-op, but should have various performance improvements. Generating Dart files may be overall faster.

Using this PR, I find that the number of file operations is reduced from 166k operations to 3142 operations. 🎉 

Fixes flutter/flutter#182958

## Pre-Review Checklist

Roll Flutter from 1141b2bdce66 to 46fb7210422d (38 revisions)

flutter/flutter@1141b2b...46fb721

2026-03-02 parlough@gmail.com [rules] Fix a few issues in the full-length rules file (flutter/flutter#182725)
2026-03-02 engine-flutter-autoroll@skia.org Roll Dart SDK from 8063f5f5ac60 to e86dbe9aa742 (1 revision) (flutter/flutter#183120)
2026-03-02 mdebbar@google.com [web] Roll Chrome to 145 (flutter/flutter#182860)
2026-03-02 engine-flutter-autoroll@skia.org Roll Skia from 61c0e71760f5 to e180358b7a7a (1 revision) (flutter/flutter#183118)
2026-03-02 engine-flutter-autoroll@skia.org Roll Packages from a27d7c5 to faa4e22 (4 revisions) (flutter/flutter#183117)
2026-03-02 stuartmorgan@google.com Add information to issue triage page (flutter/flutter#182145)
2026-03-02 engine-flutter-autoroll@skia.org Roll Skia from cc8ce92481f2 to 61c0e71760f5 (2 revisions) (flutter/flutter#183103)
2026-03-02 engine-flutter-autoroll@skia.org Roll Skia from 4cf3cd27b620 to cc8ce92481f2 (1 revision) (flutter/flutter#183100)
2026-03-02 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from zN2ZV9QD0LD8acUFF... to 0dCDM2oORHwDf_pyb... (flutter/flutter#183101)
2026-03-01 nick.fisher@avinium.com Update fl_texture_gl.h (flutter/flutter#182999)
2026-03-01 engine-flutter-autoroll@skia.org Roll Skia from be1362b5ca4e to 4cf3cd27b620 (1 revision) (flutter/flutter#183096)
2026-03-01 engine-flutter-autoroll@skia.org Roll Skia from b9210eb7005f to be1362b5ca4e (1 revision) (flutter/flutter#183092)
2026-03-01 robert.ancell@canonical.com Timeout when waiting for the correct sized frame from Flutter. (flutter/flutter#182971)
2026-03-01 engine-flutter-autoroll@skia.org Roll Skia from 28172a4e03af to b9210eb7005f (1 revision) (flutter/flutter#183088)
2026-03-01 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from D7IYacJUCpvc_1iU_... to zN2ZV9QD0LD8acUFF... (flutter/flutter#183076)
2026-02-28 engine-flutter-autoroll@skia.org Roll Dart SDK from cdf45eaf995e to 8063f5f5ac60 (1 revision) (flutter/flutter#183064)
2026-02-28 engine-flutter-autoroll@skia.org Roll Dart SDK from 54451fcdbcf9 to cdf45eaf995e (1 revision) (flutter/flutter#183057)
2026-02-28 engine-flutter-autoroll@skia.org Roll Skia from c8bcc27f5319 to 28172a4e03af (3 revisions) (flutter/flutter#183056)
2026-02-28 engine-flutter-autoroll@skia.org Roll Dart SDK from 148d91b8a603 to 54451fcdbcf9 (2 revisions) (flutter/flutter#183051)
2026-02-28 jhy03261997@gmail.com [A11y] in calendar date picker, remove SemanticsService.sendAnnouncement usage for android.  (flutter/flutter#182918)
2026-02-28 737941+loic-sharma@users.noreply.github.com Add desktop review teams (flutter/flutter#182972)
2026-02-28 zhongliu88889@gmail.com [framework] Fix Text.semanticsIdentifier being absorbed by ancestor nodes (flutter/flutter#181795)
2026-02-28 engine-flutter-autoroll@skia.org Roll Skia from b150186d3e23 to c8bcc27f5319 (5 revisions) (flutter/flutter#183032)
2026-02-28 jason-simmons@users.noreply.github.com [Impeller] For Android hardware buffers on Vulkan, use an alpha value of 1 if the buffer format always has opaque alpha (flutter/flutter#182974)
2026-02-27 30870216+gaaclarke@users.noreply.github.com Adds float32 output to `Image.toByteData()` in float32 Image (flutter/flutter#182847)
2026-02-27 engine-flutter-autoroll@skia.org Roll Dart SDK from 1cdb7dfd913e to 148d91b8a603 (1 revision) (flutter/flutter#183025)
2026-02-27 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from G1GwOdVt5bM7GjMSY... to D7IYacJUCpvc_1iU_... (flutter/flutter#183021)
2026-02-27 97480502+b-luk@users.noreply.github.com When impellerc fails with a long shader compilation error, truncate it and output to a file (flutter/flutter#182786)
2026-02-27 15619084+vashworth@users.noreply.github.com Add missing mutation-safe delegate iteration and use idomatic syntax (flutter/flutter#183018)
2026-02-27 15619084+vashworth@users.noreply.github.com Exclude arm64 if any dependencies do and print warning when using Xcode 26 (flutter/flutter#182913)
2026-02-27 victorsanniay@gmail.com Ignore unawaited_futures lint in dev/automated_tests (flutter/flutter#182922)
2026-02-27 30870216+gaaclarke@users.noreply.github.com licenses_cpp: pre-land changes for perfetto update (flutter/flutter#182965)
2026-02-27 15619084+vashworth@users.noreply.github.com Re-add extended attribute removed by SwiftPM (flutter/flutter#183011)
2026-02-27 52160996+FMorschel@users.noreply.github.com Fixes future warning for `await`ing `Future` returns in `async` bodies inside `try` blocks (flutter/flutter#182301)
2026-02-27 engine-flutter-autoroll@skia.org Roll Skia from ed220c490eea to b150186d3e23 (2 revisions) (flutter/flutter#183014)
2026-02-27 51901607+O-Hannonen@users.noreply.github.com Fix issue where web embedder is synthesizing key up events too eagerly (flutter/flutter#180692)
2026-02-27 1961493+harryterkelsen@users.noreply.github.com chore: Don't unconditionally check tools/gn formatting (flutter/flutter#182973)
2026-02-27 engine-flutter-autoroll@skia.org Roll Packages from e1d0169 to a27d7c5 (8 revisions) (flutter/flutter#183009)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-packages
Please CC bmparr@google.com,stuartmorgan@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose
...

The video player and display link won't necessarily be deallocated when the player is disposed, so the display link should be stopped at that point to avoid having it drive frame requests.

Fixes flutter/flutter#181387

## Pre-Review Checklist

[^1]: Regular contributors who have demonstrated familiarity with the repository guidelines only need to comment if the PR is not auto-exempted by repo tooling.