- add dependency injection to export-command, binary-manager,
codex-plan-compatibility, config-command, and usage-syncer
- override process.exit in api-export test to prevent silent
termination in Bun's parallel test runner
- harden test-environment bootstrap with process.env isolation
- fix auth middleware to avoid config upgrade during checks
- add transformer unit tests for flattening and daily/hourly/monthly rollups
- add syncer tests for snapshot persistence and idempotent interval start
- add aggregator integration test for JSONL + CLIProxy merge behavior