Reuse MockSlurm + MockMinIO + TestEnv wiring pattern to create a standalone
binary that serves all API endpoints with in-memory SQLite and seed data.
- internal/mockserver/server.go: assembly logic (New/Close/Run), option pattern,
4 accessors for seed data injection
- cmd/mockserver/main.go: CLI flags (--port, --seed, MOCK_PORT), 6 seed jobs
in all 5 states + 2 seed applications, signal handling
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
