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

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

Co-Authored-By: Claude Sonnet 4.5 <[email protected]>

Author: philipphofmann

.claude/settings.json

@@ -0,0 +1,15 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(find:*)",
+      "Bash(ls:*)",
+      "Bash(git:*)",
+      "WebFetch(domain:github.com)",
+      "WebFetch(domain:docs.sentry.io)",
+      "WebFetch(domain:develop.sentry.dev)",
+      "Bash(grep:*)",
+      "Bash(mv:*)"
+    ],
+    "deny": []
+  }
+}