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>

Author: markushi

.claude/skills/create-java-pr/SKILL.md

@@ -34,3 +34,7 @@ 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
+.claude/skills/

.claude/skills/test/SKILL.md

@@ -0,0 +1,9 @@
+version = 1
+
+[[skills]]
+name = "dotagents"
+source = "getsentry/dotagents"
+
+[[skills]]
+name = "*"
+source = "getsentry/sentry-for-ai"