- Implement findRawById and findProcessorSnapshot in ClickHouseExecutionRepository
- DetailController with GET /executions/{id} returning nested processor tree
- GET /executions/{id}/processors/{index}/snapshot for per-processor exchange data
- 5 unit tests for tree reconstruction (linear, branching, multiple roots, empty)
- 6 integration tests for detail endpoint, snapshot, and 404 handling
- Added assertj and mockito test dependencies to core module
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Multi-module Maven project (server-core + server-app) with Spring Boot 3.4.3,
Gitea CI workflow, and dependency on cameleer3-common from Gitea Maven registry.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>