Add Mistral Vibe support for Agency agents (#658)

* Add Mistral Vibe support for Agency agents

- Add Mistral Vibe entry to tools.json with proper configuration
  (id, label, kebab, format, installKind, dest, detection, version)
- Implement convert_vibe() function in convert.sh for Mistral Vibe's format
  - Generates TOML agent configuration files (~/.vibe/agents/<slug>.toml)
  - Generates markdown prompt files (~/.vibe/prompts/<slug>.md)
  - Each agent gets agent_type and system_prompt_id (no hardcoded active_model)
- Add install_vibe() function in install.sh with full feature support
  - Copies both agent TOML and prompt MD files
  - Supports division/agent filtering and environment variable overrides
  - Uses VIBE_HOME environment variable for custom install paths
- Add Mistral Vibe detection and tool labeling
- Add Mistral Vibe to all necessary case statements and arrays
- Update README.md to document Mistral Vibe support
- All changes validated with scripts/check-tools.sh

Mistral Vibe uses a two-file approach per agent:
- ~/.vibe/agents/<slug>.toml for agent configuration
- ~/.vibe/prompts/<slug>.md for system prompts

Users can specify active_model in their agent TOML files or rely on their
Vibe configuration default model.

Usage: ./scripts/install.sh --tool vibe [--division X] [--agent Y]

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

* Address PR #658 review feedback: add .gitignore, README, and fix icon

- Add integrations/vibe/README.md documenting the Mistral Vibe integration
- Update .gitignore to ignore integrations/vibe/agents/ and prompts/
- Update convert.sh usage() to include vibe in the tool list
- Fix tools.json: change vibe icon from 'mistral' to null (no mistral.svg)
- Bonus: update vibe accent color from #FF69B4 to #FA520F (Mistral brand orange)

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

---------

Co-authored-by: Mistral Vibe <vibe@mistral.ai>

tools.json

@@ -14,6 +14,7 @@
     "kimi": {"id":"kimi","label":"Kimi","short":"Kimi","kebab":"kimi","accent":"#0F0F12","icon":"kimi","order":11,"scope":{"user":true,"project":false},"detect":{"dirs":[],"agentsDir":".config/kimi/agents"},"version":{"bin":"kimi","args":["--version"]},"format":"kimi-agent","installKind":"per-agent","slugFrom":"name","dest":{"user":[".config/kimi/agents/{slug}/agent.yaml",".config/kimi/agents/{slug}/system.md"],"project":[]}},
     "openclaw": {"id":"openclaw","label":"OpenClaw","short":"openclaw","kebab":"openclaw","accent":"#E11D48","icon":null,"order":12,"scope":{"user":true,"project":false},"detect":{"dirs":[".openclaw"],"agentsDir":".openclaw/agency-agents"},"version":{"bin":"openclaw","args":["--version"]},"format":"openclaw-workspace","installKind":"per-agent","slugFrom":"name","dest":{"user":[".openclaw/agency-agents/{slug}/SOUL.md",".openclaw/agency-agents/{slug}/AGENTS.md",".openclaw/agency-agents/{slug}/IDENTITY.md"],"project":[]}},
     "windsurf": {"id":"windsurf","label":"Windsurf","short":"Windsurf","kebab":"windsurf","accent":"#09B6A2","icon":"windsurf","order":13,"scope":{"user":false,"project":true},"detect":{"dirs":[".codeium"],"agentsDir":null},"version":{"bin":"windsurf","args":["--version"]},"format":"windsurf-rules","installKind":"roster","slugFrom":null,"dest":{"user":[],"project":[".windsurfrules"]}},
-    "hermes": {"id":"hermes","label":"Hermes","short":"Hermes","kebab":"hermes","accent":"#7C3AED","icon":null,"order":14,"scope":{"user":true,"project":false},"detect":{"dirs":[".hermes"],"agentsDir":".hermes/plugins"},"version":{"bin":"hermes","args":["--version"]},"format":"hermes-router-plugin","installKind":"plugin","slugFrom":null,"dest":{"user":[".hermes/plugins/agency-agents-router"],"project":[]}}
+    "hermes": {"id":"hermes","label":"Hermes","short":"Hermes","kebab":"hermes","accent":"#7C3AED","icon":null,"order":14,"scope":{"user":true,"project":false},"detect":{"dirs":[".hermes"],"agentsDir":".hermes/plugins"},"version":{"bin":"hermes","args":["--version"]},"format":"hermes-router-plugin","installKind":"plugin","slugFrom":null,"dest":{"user":[".hermes/plugins/agency-agents-router"],"project":[]}},
+    "vibe": {"id":"vibe","label":"Mistral Vibe","short":"Vibe","kebab":"vibe","accent":"#FA520F","icon":null,"order":15,"scope":{"user":true,"project":true},"detect":{"dirs":[".vibe"],"agentsDir":".vibe/agents"},"version":{"bin":"vibe","args":["--version"]},"format":"vibe-toml","installKind":"per-agent","slugFrom":"name","dest":{"user":[".vibe/agents/{slug}.toml",".vibe/prompts/{slug}.md"],"project":[".vibe/agents/{slug}.toml",".vibe/prompts/{slug}.md"]}}
   }
 }