Break down jupyter.zig (31KB, 906 lines) into focused modules:
- jupyter/mod.zig - Main entry point and command dispatch
- jupyter/validation.zig - Security validation functions
- jupyter/lifecycle.zig - Service create/start/stop/remove/restore
- jupyter/query.zig - List, status, and package queries
- jupyter/workspace.zig - Workspace and experiment management
Original jupyter.zig now acts as backward-compatible wrapper.
Removed 5 unimplemented placeholder functions (~50 lines of dead code).
Benefits:
- Each module <250 lines (maintainable)
- Clear separation of concerns
- Easier to test individual components
- Better code organization
All tests pass.
