Inject test ServerConfig across orchestration and git layers

- add `ServerConfig.layerTest(cwd, stateDir)` to standardize test wiring
- require `ServerConfig` in `CodexTextGeneration` attachment path resolution
- update orchestration/projection tests and harness to use managed runtimes with explicit config
8f42d34db9Julius Marminge committed on 3/2/2026, 4:06:21 AM· committed by Julius Marmingeparent70857ce
11 files changedLine totals unavailable