feat: add Mistral Vibe as a supported tool

[nmrtn]

Summary

• Adds Vibe (Mistral) to the AI_TOOLS array in src/core/config.ts with skillsDir: '.vibe'
• Adds the corresponding row to the Tool Directory Reference table in docs/supported-tools.md
• Adds vibe to the --tools ID list
• Adds a footnote explaining that Vibe loads skills globally from ~/.vibe/skills/ by default, and project-local .vibe/skills/ requires adding the path to skill_paths in ~/.vibe/config.toml

Notes

Vibe uses the SKILL.md standard natively (same frontmatter format). Skills are invoked as /skill-name commands. No command adapter exists — commands are "Not generated", consistent with Trae and ForgeCode.

This was surfaced while adding nanopm as a community schema (PR #1109) — nanopm now ships Vibe-translated skills and installs to ~/.vibe/skills/ automatically. Vibe being absent from this list was the gap.

Test plan

• openspec init --tools vibe installs skills to .vibe/skills/openspec-*/SKILL.md
• openspec init --tools all includes Vibe
• vibe appears in --help tool ID list

🤖 Generated with Claude Code

Summary by CodeRabbit

• New Features

  • Vibe (Mistral) is now available as an AI tool option with support for configurable skills directories enabling both global and project-local skill management.

• Documentation

  • Supported tools documentation updated to include Vibe, with details on tool availability, command-line options, and guidance for configuring global versus project-specific skills.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 332be4e4-f10a-46fe-a161-8b808cf657d8

📥 Commits

Reviewing files that changed from the base of the PR and between 79303b5 and 9d2bdda.

📒 Files selected for processing (2)

• docs/supported-tools.md
• src/core/config.ts

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📝 Walkthrough

Walkthrough

This PR registers Vibe (Mistral) as an available AI tool by adding a configuration entry and updating documentation. The configuration defines the tool's identifier and skills directory, while the docs describe tool availability and explain Vibe's global skills loading behavior with project-local override options.

Changes

Vibe Tool Registration

Layer / File(s)	Summary
Vibe configuration entry and documentation src/core/config.ts, docs/supported-tools.md	Added Vibe to the AI_TOOLS array with identifier 'vibe', success label, and skills directory .vibe. Documented the tool in the directory reference table, added it to the available tool IDs list, and included a footnote explaining how to enable project-local skills via ~/.vibe/config.toml.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~5 minutes

Possibly related PRs

• Fission-AI/OpenSpec#1027: Updates tool-ID listings in docs/supported-tools.md by adding a new tool; similar pattern of documenting tool support.
• Fission-AI/OpenSpec#601: Updates src/core/config.ts's AI_TOOLS array to add a new tool entry and aligns docs/supported-tools.md accordingly.
• Fission-AI/OpenSpec#941: Adds a new entry to AI_TOOLS in src/core/config.ts and extends docs/supported-tools.md with the new tool ID.

Suggested reviewers

• TabishB

Poem

🐰 A new tool hops into view,
Vibe joins the crew, shiny and new,
Skills dance in directories bright,
Config and docs aligned just right! ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: adding Vibe (Mistral) as a supported tool, which is directly reflected in both the configuration and documentation updates.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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