feat(api_summary): Move api_summary package into the tools monorepo

[kevmoo]

• Copy pkg/api_summary from dart-lang/sdk to pkgs/api_summary.
• Remove SDK workspace resolution (resolution: workspace).
• Set specific dependency version constraints instead of any.
• Add package-specific GitHub Actions workflow (.github/workflows/api_summary.yaml).
• Update README.md using the repository's readme_update.dart script.
• Add build status and pub.dev badges to the package-specific README.md.
• Configure strict analyzer language options and extra lint rules.
• Format and refactor the code to fully satisfy all new lint rules.

[github-actions]

Package publishing

Package	Version	Status	Publish tag (post-merge)
package:api_summary	0.1.0-wip	WIP (no publish necessary)
package:bazel_worker	1.1.5	already published at pub.dev
package:benchmark_harness	2.4.0	already published at pub.dev
package:boolean_selector	2.1.2	already published at pub.dev
package:browser_launcher	1.2.0-wip	WIP (no publish necessary)
package:cli_config	0.2.1-wip	WIP (no publish necessary)
package:cli_util	0.5.1	already published at pub.dev
package:clock	1.1.3-wip	WIP (no publish necessary)
package:code_builder	4.12.0-wip	WIP (no publish necessary)
package:coverage	1.15.0	already published at pub.dev
package:csslib	1.0.2	already published at pub.dev
package:extension_discovery	2.1.0	already published at pub.dev
package:file	7.0.2-wip	WIP (no publish necessary)
package:file_testing	3.1.0-wip	WIP (no publish necessary)
package:glob	2.1.3	already published at pub.dev
package:graphs	2.4.0-wip	WIP (no publish necessary)
package:html	0.15.7-wip	WIP (no publish necessary)
package:io	1.1.0-wip	WIP (no publish necessary)
package:json_rpc_2	4.1.0	already published at pub.dev
package:markdown	7.4.0	ready to publish	markdown-v7.4.0
package:mime	2.1.0-wip	WIP (no publish necessary)
package:oauth2	2.0.5	already published at pub.dev
package:package_config	2.3.0-wip	WIP (no publish necessary)
package:pool	1.5.3-wip	WIP (no publish necessary)
package:process	5.0.5	(error) pubspec version (5.0.5) and changelog (5.0.6-wip) don't agree
package:pub_semver	2.2.0	already published at pub.dev
package:pubspec_parse	1.6.0-wip	WIP (no publish necessary)
package:source_map_stack_trace	2.1.3-wip	WIP (no publish necessary)
package:source_maps	0.10.14-wip	WIP (no publish necessary)
package:source_span	1.10.2	already published at pub.dev
package:sse	4.2.0	already published at pub.dev
package:stack_trace	1.12.2-wip	(error) pubspec version (1.12.2-wip) and changelog (1.12.2-dev) don't agree
package:stream_channel	2.1.4	already published at pub.dev
package:stream_transform	2.1.2-wip	WIP (no publish necessary)
package:string_scanner	1.4.2-wip	WIP (no publish necessary)
package:term_glyph	1.2.3-wip	WIP (no publish necessary)
package:test_reflective_loader	0.6.0	ready to publish	test_reflective_loader-v0.6.0
package:timing	1.0.2	already published at pub.dev
package:unified_analytics	8.0.15	ready to publish	unified_analytics-v8.0.15
package:watcher	1.2.2-wip	WIP (no publish necessary)
package:yaml	3.1.4-wip	WIP (no publish necessary)
package:yaml_edit	2.2.4	already published at pub.dev

Documentation at https://github.com/dart-lang/ecosystem/wiki/Publishing-automation.

[github-actions]

PR Health

API leaks ✔️

The following packages contain symbols visible in the public API, but not exported by the library. Export these symbols or remove them from your publicly visible API.

Package	Leaked API symbol	Leaking sources

This check can be disabled by tagging the PR with skip-leaking-check.

Unused Dependencies ✔️

Package	Status
api_summary	✔️ All dependencies utilized correctly.

For details on how to fix these, see dependency_validator.

This check can be disabled by tagging the PR with skip-unused-dependencies-check.

License Headers ✔️

// Copyright (c) 2026, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

Files
no missing headers

All source files should start with a license header.

Unrelated files missing license headers

Files
pkgs/bazel_worker/benchmark/benchmark.dart
pkgs/coverage/lib/src/coverage_options.dart
pkgs/html/example/main.dart
pkgs/pubspec_parse/test/git_uri_test.dart
pkgs/watcher/test/custom_watcher_factory_test.dart

This check can be disabled by tagging the PR with skip-license-check.

Changelog Entry ✔️

Package	Changed Files

Changes to files need to be accounted for in their respective changelogs.

This check can be disabled by tagging the PR with skip-changelog-check.

Breaking changes ⚠️

Package	Change	Current Version	New Version	Needed Version	Looking good?
api_summary	Breaking	0.0.0	0.0.0	0.0.0 Report was not created for package:api_summary 0.1.0-wip (dir=/home/runner/work/tools/tools/current_repo/pkgs/api_summary). Error: Error: Exception: Package not available (could not find package api_summary at https://pub.dev).	⚠️

This check can be disabled by tagging the PR with skip-breaking-check.

Coverage ⚠️

File	Coverage
pkgs/api_summary/bin/api_summary.dart	💔 Not covered
pkgs/api_summary/example/example.dart	💔 Not covered
pkgs/api_summary/lib/api_summary.dart	💔 Not covered
pkgs/api_summary/lib/src/api_description.dart	💚 95 %
pkgs/api_summary/lib/src/api_summary_customizer.dart	💚 100 %
pkgs/api_summary/lib/src/extensions.dart	💚 100 %
pkgs/api_summary/lib/src/member_sorting.dart	💚 85 %
pkgs/api_summary/lib/src/node.dart	💚 100 %
pkgs/api_summary/lib/src/unique_namer.dart	💚 100 %
pkgs/api_summary/lib/src/uri_sorting.dart	💚 100 %

This check for test coverage is informational (issues shown here will not fail the PR).

This check can be disabled by tagging the PR with skip-coverage-check.

[gemini-code-assist]

Code Review

This pull request introduces a new experimental package, api_summary, which generates human-readable text summaries of a Dart package's public API for auditing purposes. The implementation includes a CLI tool, core logic for traversing analyzer elements, and a customizable visitor pattern. Review feedback focuses on improving the robustness of the package as a foundational component. Key issues identified include risky assumptions about the number of analysis contexts, unsafe type casting of file and library results, and logic errors that incorrectly skip factory constructors for enums and sealed or abstract classes.