docs: add auto-claude spec and tracking files

- Add spec.md and requirements.json for task definition
- Add qa_report.md with QA findings
- Add task_logs.json and task_metadata.json for tracking

.auto-claude/specs/001-conceptual-explanations/task_metadata.json

@@ -0,0 +1,5 @@
+{
+  "sourceType": "roadmap",
+  "featureId": "feature-2",
+  "category": "feature"
+}