chore: update CHANGELOG and CONTRIBUTORS for PR #9675 compliance

- Add PR #9675 reference entry to [Unreleased] section in CHANGELOG.md
- Add new HAL 9000 entry describing ACMS context CLI commands implementation for PR #9675 / issue #9586

CHANGELOG.md

@@ -13,6 +13,8 @@ The format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
   traceback in the structlog warning entry. Removed `@tdd_expected_fail` tag
   from the TDD test so both scenarios run as normal regression guards. (#988)
 
+- feat(cli): implement context show and context clear CLI commands for ACMS - Closes #9586 (#9675)
+
 ### Fixed
 - **TUI Prompt Symbol Mode Awareness** (#6431): The prompt widget now displays a
   mode-dependent symbol (`❯` normal, `/` command, `$` shell, `☰` multi-line),

CONTRIBUTORS.md

@@ -24,5 +24,6 @@ Below are some of the specific details of various contributions.
 * HAL 9000 has contributed the decision recording hook for the Strategize phase (issue #8522): captures every decision point with question, chosen option, alternatives, confidence, rationale, and full context snapshot for replay and correction.
 * HAL 9000 has contributed automated bug fixes, CLI output formatting improvements, and ongoing maintenance as part of the CleverAgents automation system.
 * HAL 9000 has contributed the ACMS context CLI commands (`context show` and `context clear`) for the ACMS v1 milestone, including full BDD test coverage, Robot Framework integration tests, ASV performance benchmarks, and per-tier budget utilization breakdown (issue #9586).
+* HAL 9000 has contributed the ACMS context CLI commands implementation (`agents acms context show` / `agents acms context clear`) for PR #9675 / issue #9586, including wiring up the ACMS context sub-app to the main CLI entry point and CI compliance fixes.
 * This project was made possible thanks to considerable donation of time, money, and resources by CleverThis, Inc.
 >>>>>>> 829b1755 (fix(cli): add per-tier budget utilization breakdown to context show)