chore(tooling): Add dotagents configuration (#5230)

* meta: Add dotagents configuration

Sets up dotagents to manage AI agent skills declaratively via agents.toml.
Previously committed skills are now managed by dotagents and gitignored.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* meta: Keep custom skills alongside dotagents-managed ones

Use a nested .gitignore in .claude/skills/ to ignore dotagents-managed
skills while preserving repo-specific custom skills (create-java-pr, test).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Declare built-in skills

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: markushi

.claude/skills/.gitignore

@@ -0,0 +1,8 @@
+# Ignore dotagents-managed skills (synced from agents.toml)
+*
+# Keep custom repo-specific skills
+!.gitignore
+!create-java-pr/
+!create-java-pr/**
+!test/
+!test/**

.gitignore

@@ -34,3 +34,6 @@ spy.log
 # Local Claude Code settings/state that should not be committed
 .claude/settings.local.json
 .claude/worktrees/
+# Auto-generated by dotagents — do not commit these files.
+agents.lock
+.agents/.gitignore

agents.toml

@@ -0,0 +1,33 @@
+# Whenever you make changes to this file, run the following to update all generated dotagent files 
+# npx @sentry/dotagents install
+# npx @sentry/dotagents sync
+
+version = 1
+
+[[skills]]
+name = "dotagents"
+source = "getsentry/dotagents"
+
+[[skills]]
+name = "sentry-workflow"
+source = "getsentry/sentry-for-ai"
+
+[[skills]]
+name = "sentry-fix-issues"
+source = "getsentry/sentry-for-ai"
+
+[[skills]]
+name = "sentry-code-review"
+source = "getsentry/sentry-for-ai"
+
+[[skills]]
+name = "sentry-pr-code-review"
+source = "getsentry/sentry-for-ai"
+
+[[skills]]
+name = "create-java-pr"
+source = "path:.agents/skills/create-java-pr"
+
+[[skills]]
+name = "test"
+source = "path:.agents/skills/test"