- Rewrote production CLI to use real ContextTierService (get_scoped_view, get_all_fragments, evict_lru) instead of non-existent ACMSService
- Removed unused imports (Path, Panel, ScopedView) from production code
- Fixed all lint issues: trailing whitespace, import ordering, nested with statements
- Replaced typer.Abort() with typer.Exit(code=1) for error exits
- Added input validation for empty/whitespace view parameter
- Fixed error handling to use str(e) instead of e.message
- Added guards against negative budget values in _format_budget_utilization
- Added warning when clearing context with no filters (clear ALL)
- Removed module-level console side effect
- Moved mocks to features/mocks/acms_context_mocks.py per CONTRIBUTING.md
- Fixed test assertions to capture real CLI output (not placeholder)
- Fixed duplicate step definitions (AmbiguousStep errors)
- Fixed feature file step mismatch for tier count parameter
- Added Robot Framework integration tests in robot/acms_context_cli.robot
- Added performance benchmarks in benchmarks/acms_context_cli_bench.py
- Updated CHANGELOG.md with ACMS context CLI feature entry
- Updated CONTRIBUTORS.md with ACMS context CLI contribution
ISSUES CLOSED: #9586
