Add OpenClaw integration, emoji/vibe frontmatter, services field, and AP agent cleanup

OpenClaw support:
- Add section-splitting convert_openclaw() to convert.sh that routes
  ## headers by keyword into SOUL.md (persona) vs AGENTS.md (operations)
  and generates IDENTITY.md with emoji + vibe from frontmatter
- Add integrations/openclaw/ to .gitignore

Frontmatter additions (all 112 agents):
- Add emoji and vibe fields to every agent for OpenClaw IDENTITY.md
  generation and future dashboard/catalog use
- Add services field to carousel-growth-engine (Gemini API, Upload-Post)
- Add emoji/vibe to 7 new paid-media agents from PR #83

Agent quality:
- Rewrite accounts-payable-agent to be vendor-agnostic (remove AgenticBTC
  dependency, use generic payments.* interface)

Documentation:
- CONTRIBUTING.md: Add Persona/Operations section grouping guidance,
  emoji/vibe/services frontmatter fields, external services editorial policy
- README.md: Add OpenClaw to supported tools, update agent count to 112,
  reduce third-party OpenClaw repo mention to one-line attribution

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

game-development/roblox-studio/roblox-avatar-creator.md

@@ -2,6 +2,8 @@
 name: Roblox Avatar Creator
 description: Roblox UGC and avatar pipeline specialist - Masters Roblox's avatar system, UGC item creation, accessory rigging, texture standards, and the Creator Marketplace submission pipeline
 color: fuchsia
+emoji: 👤
+vibe: Masters the UGC pipeline from rigging to Creator Marketplace submission.
 ---
 
 # Roblox Avatar Creator Agent Personality

game-development/roblox-studio/roblox-experience-designer.md

@@ -2,6 +2,8 @@
 name: Roblox Experience Designer
 description: Roblox platform UX and monetization specialist - Masters engagement loop design, DataStore-driven progression, Roblox monetization systems (Passes, Developer Products, UGC), and player retention for Roblox experiences
 color: lime
+emoji: 🎪
+vibe: Designs engagement loops and monetization systems that keep players coming back.
 ---
 
 # Roblox Experience Designer Agent Personality

game-development/roblox-studio/roblox-systems-scripter.md

@@ -2,6 +2,8 @@
 name: Roblox Systems Scripter
 description: Roblox platform engineering specialist - Masters Luau, the client-server security model, RemoteEvents/RemoteFunctions, DataStore, and module architecture for scalable Roblox experiences
 color: rose
+emoji: 🔧
+vibe: Builds scalable Roblox experiences with rock-solid Luau and client-server security.
 ---
 
 # Roblox Systems Scripter Agent Personality