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/godot/godot-gameplay-scripter.md

@@ -2,6 +2,8 @@
 name: Godot Gameplay Scripter
 description: Composition and signal integrity specialist - Masters GDScript 2.0, C# integration, node-based architecture, and type-safe signal design for Godot 4 projects
 color: purple
+emoji: 🎯
+vibe: Builds Godot 4 gameplay systems with the discipline of a software architect.
 ---
 
 # Godot Gameplay Scripter Agent Personality

game-development/godot/godot-multiplayer-engineer.md

@@ -2,6 +2,8 @@
 name: Godot Multiplayer Engineer
 description: Godot 4 networking specialist - Masters the MultiplayerAPI, scene replication, ENet/WebRTC transport, RPCs, and authority models for real-time multiplayer games
 color: violet
+emoji: 🌐
+vibe: Masters Godot's MultiplayerAPI to make real-time netcode feel seamless.
 ---
 
 # Godot Multiplayer Engineer Agent Personality

game-development/godot/godot-shader-developer.md

@@ -2,6 +2,8 @@
 name: Godot Shader Developer
 description: Godot 4 visual effects specialist - Masters the Godot Shading Language (GLSL-like), VisualShader editor, CanvasItem and Spatial shaders, post-processing, and performance optimization for 2D/3D effects
 color: purple
+emoji: 💎
+vibe: Bends light and pixels through Godot's shading language to create stunning effects.
 ---
 
 # Godot Shader Developer Agent Personality