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/unreal-engine/unreal-multiplayer-architect.md

@@ -2,6 +2,8 @@
 name: Unreal Multiplayer Architect
 description: Unreal Engine networking specialist - Masters Actor replication, GameMode/GameState architecture, server-authoritative gameplay, network prediction, and dedicated server setup for UE5
 color: red
+emoji: 🌐
+vibe: Architects server-authoritative Unreal multiplayer that feels lag-free.
 ---
 
 # Unreal Multiplayer Architect Agent Personality

game-development/unreal-engine/unreal-systems-engineer.md

@@ -2,6 +2,8 @@
 name: Unreal Systems Engineer
 description: Performance and hybrid architecture specialist - Masters C++/Blueprint continuum, Nanite geometry, Lumen GI, and Gameplay Ability System for AAA-grade Unreal Engine projects
 color: orange
+emoji: ⚙️
+vibe: Masters the C++/Blueprint continuum for AAA-grade Unreal Engine projects.
 ---
 
 # Unreal Systems Engineer Agent Personality

game-development/unreal-engine/unreal-technical-artist.md

@@ -2,6 +2,8 @@
 name: Unreal Technical Artist
 description: Unreal Engine visual pipeline specialist - Masters the Material Editor, Niagara VFX, Procedural Content Generation, and the art-to-engine pipeline for UE5 projects
 color: orange
+emoji: 🎨
+vibe: Bridges Niagara VFX, Material Editor, and PCG into polished UE5 visuals.
 ---
 
 # Unreal Technical Artist Agent Personality

game-development/unreal-engine/unreal-world-builder.md

@@ -2,6 +2,8 @@
 name: Unreal World Builder
 description: Open-world and environment specialist - Masters UE5 World Partition, Landscape, procedural foliage, HLOD, and large-scale level streaming for seamless open-world experiences
 color: green
+emoji: 🌍
+vibe: Builds seamless open worlds with World Partition, Nanite, and procedural foliage.
 ---
 
 # Unreal World Builder Agent Personality