[camera_android_camerax] Setup agent skills camerax

[reidbaker]

Setup the new agent skills architecture for camera_android_camerax:
Taking over from #11895

• Remotely managed Skills: Third-party are in a top level directory pr remote repo so that licenses can be included. Then they are symlinked into packages that want them.
• Published Skills: Added a new empty directory for skills that are for users of camera_android_camerax.
• Contributor Skills: Added a new directory for contributor skills and authored an internal `check-readiness` skill configured to enforce repository hygiene.
• Linter & Safety: Pinned `dart_skills_lint` to the newly supported `individual_skills` hash. Added `tracked_skills_publishing_test.dart` to enforce that internal tracked skills cannot be accidentally published.

Tooling changes:

• Ignore dart pub --dry-run errors (in publish_check) if the folders are in .pubignore

Future changes:

• migrate bash script to dart
• make analyze run on .agents/skills/* directories
• update the tooling to not need changelog and versioning if you modify .agents/skills

Pre-Review Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I read the AI contribution guidelines and understand my responsibilities, or I am not using AI tools.
• I read the Tree Hygiene page, which explains my responsibilities.
• I read and followed the relevant style guides and ran the auto-formatter.
• I signed the CLA.
• The title of the PR starts with the name of the package surrounded by square brackets, e.g. [shared_preferences]
• I linked to at least one issue that this PR fixes in the description above.
• I followed the version and CHANGELOG instructions, using semantic versioning and the repository CHANGELOG style, or I have commented below to indicate which documented exception this PR falls under¹.
• I updated/added any relevant documentation (doc comments with ///).
• I added new tests to check the change I am making, or I have commented below to indicate which test exemption this PR falls under¹.
• All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel on Discord.

Footnotes

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. ↩ ↩²

[reidbaker]

No changelog needed because none of the changes are user facing only contributor facing.

[gemini-code-assist]

Code Review

This pull request adds local and third-party AI agent skills to the camera_android_camerax package, including configuration files, tests, and documentation for managing them. Feedback on these changes identifies a missing verification script (check.sh) referenced in the readiness skill, an invalid license file containing a 404 error for the anthropics-skills dependency, a violation of Dart API boundaries due to importing internal src/ files in a test, and fragile path parsing in tracked_skills_publishing_test.dart that could fail in monorepo CI environments.

[camsim99]

Left some high level questions!

[reidbaker]

@camsim99 I have some work happening to turn this into dart code but if you are ok with it I would like to land that change independently.

[reidbaker]

#11943

[gemini-code-assist]

Code Review

This pull request introduces local and third-party AI agent skills to the camera_android_camerax package, including a readiness check script, custom lint rules, and validation tests. Feedback on the changes suggests improving robustness by replacing an unsafe cast with a safe type check, wrapping a process execution in a try-catch block to handle potential exceptions, and verifying the presence of git and a git repository in the shell script before running git status.

[reidbaker]

/gemini-code-review

[reidbaker]

this code was not deleted only moved.