feat: voice-friendly skill triggers for AquaVoice (v0.14.6.0) (#732)

* feat: voice-friendly skill triggers for speech-to-text input

Add voice-triggers YAML field to 10 SKILL.md.tmpl files with natural-language
aliases (e.g. "see-so" for /cso, "tech review" for /plan-eng-review).
gen-skill-docs preprocesses voice triggers before transformFrontmatter,
folding them into the description and stripping the field from output.
Includes unit tests, README voice input section, and CONTRIBUTING.md update.

* chore: bump version and changelog (v0.14.6.0)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

plan-eng-review/SKILL.md

@@ -9,6 +9,7 @@ description: |
   "review the architecture", "engineering review", or "lock in the plan".
   Proactively suggest when the user has a plan or design doc and is about to
   start coding — to catch architecture issues before implementation. (gstack)
+  Voice triggers (speech-to-text aliases): "tech review", "technical review", "plan engineering review".
 benefits-from: [office-hours]
 allowed-tools:
   - Read

plan-eng-review/SKILL.md.tmpl

@@ -9,6 +9,10 @@ description: |
   "review the architecture", "engineering review", or "lock in the plan".
   Proactively suggest when the user has a plan or design doc and is about to
   start coding — to catch architecture issues before implementation. (gstack)
+voice-triggers:
+  - "tech review"
+  - "technical review"
+  - "plan engineering review"
 benefits-from: [office-hours]
 allowed-tools:
   - Read