chore(repo): Add Claude Code settings with basic permissions

[philipphofmann]

Adds .claude/settings.json to enable Claude Code with:

• Basic bash commands (find, ls, git, grep, mv)
• WebFetch access to GitHub and Sentry documentation sites

This follows the same pattern used in other Sentry SDK repositories like sentry-javascript, sentry-dart, and sentry-react-native.

Note: This adds .claude/settings.json with -f flag since .claude is in .gitignore for local settings.

[szokeasaurusrex]

I am not sure how I feel about this change; I think permissions settings are something that developers should configure for themselves. @lcian what do you think?

[philipphofmann]

@szokeasaurusrex, this is a handy default set of permissions for Claude across all SDKs and developers. You can still keep personal permissions locally for every dev. Sharing defaults helps everyone get started faster, but it’s totally optional—use them if you want, or just close the PR if not.

[lcian]

I think as long as the commands cannot introduce any security problems in the developer's environment, this is not a big deal.
find could in theory be used to execute arbitrary commands so that could be the only concern.

[szokeasaurusrex]

Ok, you have convinced me that having defaults in the repo makes sense. But, I do have some opinions on some of the permissions.

I myself typically am okay with the agent taking more permissions, but I am not using YOLO mode. I also know that other devs may not want their agents to have that many permissions, so the defaults should be conservative imo.