feat(caveman): Enhance skill definition with argument hint

Adds an `argument-hint` to `SKILL.md` to explicitly list valid usage parameters for the skill. Removes an outdated internal comment and includes minor formatting adjustments in collection and plugin manifests.

Author: TechPreacher

.github/skills/experimental/caveman/SKILL.md

@@ -1,6 +1,7 @@
 ---
 name: caveman
 description: 'Ultra-compressed response style that reduces output token count while preserving technical accuracy, with intensity levels and auto-clarity safety rules - Brought to you by microsoft/hve-core'
+argument-hint: "[{lite|full|ultra|wenyan|off}]"
 license: MIT
 disable-model-invocation: true
 metadata:
@@ -101,5 +102,3 @@ Caveman (ultra): "Auth bug. `<` → `<=`. Fix:"
 Concept based on the [Caveman project](https://github.com/JuliusBrussee/caveman) (MIT license, Copyright (c) 2026 Julius Brussee). This SKILL.md is an original specification authored for hve-core; no upstream files are redistributed.
 
 > Brought to you by microsoft/hve-core
-
-🤖 Crafted with precision by ✨Copilot following brilliant human instruction, then carefully refined by our team of discerning human reviewers.

collections/hve-core-all.collection.md

@@ -238,6 +238,7 @@ Use this edition when you want access to everything without choosing a focused c
 | **adr-author**                | Authoring skill for Architecture Decision Records (ADRs) supporting capture, from-planner-handoff, and adopt-template entry modes with selectable Y-Statement or MADR v4.0.0 output templates, supersession lineage, and ASR trigger evaluation - Brought to you by microsoft/hve-core.                               |
 | **architecture-diagrams**     | Architecture diagram authoring for cloud infrastructure: parse Azure IaC, map relationships, and render either ASCII block diagrams or Mermaid flowcharts based on the caller's chosen output format                                                                                                                  |
 | **backlog-templates**         | Shared work-item templates and conventions for ADO and GitHub backlog handoff across the RAI, Security, SSSC, and Accessibility planners                                                                                                                                                                              |
+| **caveman**                   | Ultra-compressed response style that reduces output token count while preserving technical accuracy, with intensity levels and auto-clarity safety rules                                                                                                                                                              |
 | **customer-card-render**      | Generate customer-card PowerPoint content YAML from Design Thinking canonical artifacts and build using the shared PowerPoint skill pipeline                                                                                                                                                                          |
 | **documentation**             | Canonical documentation capability for audit, drift, validate, and author modes in hve-core.                                                                                                                                                                                                                          |
 | **dt-coaching-foundation**    | Design Thinking coaching foundation knowledge: coach identity and philosophy, quality and fidelity constraints, method sequencing, coaching state schema, and the canonical deck workflow                                                                                                                             |