WIP: Claude Code plugin

[keertip]

Work in Progress : to test before sending for review

Bundle the Dart and Flutter plugins into a plugin for Claude Code.

[github-actions]

PR Health

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[gemini-code-assist]

Code Review

This pull request introduces a bash script to sync Dart and Flutter skills, Claude plugin configuration files, and a comprehensive collection of skill guides for Dart and Flutter development. The review feedback highlights a few necessary corrections, including removing an invalid trailing comma in the marketplace JSON configuration, adding a trap to guarantee temporary directory cleanup in the sync script, and fixing minor typos and syntax errors in the skill documentation.

[gemini-code-assist]

[MUST-FIX] Trailing commas are invalid in standard JSON. This will cause parsing errors when the file is loaded. Please remove the trailing comma.

Suggested change

	"name": "Dart and Flutter Team",
	"name": "Dart and Flutter Team"

[gemini-code-assist]

[CONCERN] Since the script is run with set -e, any failure during cloning or syncing will cause the script to exit immediately, leaving the temporary directory behind. Consider using a trap to guarantee cleanup of the temporary directory on exit.

Suggested change

	TEMP_DIR=$(mktemp -d)
	TEMP_DIR=$(mktemp -d)\ntrap 'rm -rf "$TEMP_DIR"' EXIT

[gemini-code-assist]

[CONCERN] There is a typo/syntax error in the code example: triggerSync" has an unmatched double quote and is missing parentheses. It should be triggerSyncError() to match the correct function name used in the previous example.

Suggested change

	check(() => triggerSync").throws<ArgumentError>((it) => ...); // ERROR!
	check(() => triggerSyncError()).throws<ArgumentError>((it) => ...); // ERROR!

[gemini-code-assist]

[CONCERN] Typo: "packge" should be "package".

Suggested change

	description: Collect coverage using the coverage packge and create an LCOV report
	description: Collect coverage using the coverage package and create an LCOV report

[johnpryan]

Here's what I got when I ran claude plugin validate:

claude plugin validate .
Validating marketplace manifest:
/Users/john/code/github/dart-lang/ai/plugins/.claude-plugin/marketplace.json

⚠ Found 2 warnings:

  ❯ description: No marketplace description provided. Adding a description helps users
understand what this marketplace offers
  ❯ plugins[0] plugin.json → version: No version specified. Consider adding a version
following semver (e.g., "1.0.0")

✔ Validation passed with warnings

[keertip]

Thanks for validating the plugin. Added a description for the marketplace, and version info to plugin.