feat: Add Kiro IDE and Kiro CLI support with global mode

[maekawataiki]

Summary

Adds comprehensive support for Kiro IDE and Kiro CLI as new tool targets, including global mode support for both.

Features Added

Tool	rules	mcp	commands	subagents	skills
Kiro IDE	✅ 🌏	✅ 🌏	✅	-	🌏
Kiro CLI	✅ 🌏	✅ 🌏	✅ 🌏	✅ 🌏	-

✅ = project mode, 🌏 = global mode

Implementation Details

Kiro IDE:

• Steering files output to .kiro/steering/ for global with root file at product.md (since ~/AGENTS.md is not supported)
• MCP configuration at .kiro/settings/mcp.json (~/.kiro/settings/mcp.json for global)
• Commands (hooks) at .kiro/hooks/*.kiro.hook
• Subagents does not support individual prompt for each subagent, so it is not implemented yet
• Skills (powers) at ~/.kiro/powers/installed/*/SKILL.md (only global scope is supported at this moment)

Kiro CLI:

• Steering files (same as IDE)
• MCP configuration (same as IDE)
• Commands (prompts) at .kiro/prompts/.md (~/.kiro/prompts/.md for global)
• Subagents at .kiro/agents/.json (uses .json extension unlike other tools) (~/.kiro/agents/.json for global)
• Skills not supported yet. (planned according to the launch blog)

Technical Changes

• Kiro IDE / Kiro CLI support
• additional test to cover project / global import and generate
• Added outputBaseDir parameter to toRulesyncMcp() for explicit control over import output location

Why outputBaseDir was added to toRulesyncMcp()

In global mode, two directories diverge:

• baseDir: Home directory (~) for tool files (e.g., ~/.kiro/settings/mcp.json)
• Rulesync output: Current working directory where rulesync import runs

According to the README, global mode should work from any directory (e.g., ~/.aiglobal):

cd ~/.aiglobal
npx rulesync import --targets claudecode --features rules --global
# Expected: ~/.aiglobal/.rulesync/rules/CLAUDE.md

However, the current main branch implementation writes to ~/.rulesync/rules/CLAUDE.md regardless of process.cwd(), because toRulesyncMcp() uses baseDir (home directory in global mode) for output.

This PR changes the default output to process.cwd(), matching the README's documented behavior.

Question for maintainer: Which behavior is intended?

1. Current main: Always write to ~/.rulesync/ in global mode
2. This PR: Write to process.cwd()/.rulesync/ (e.g., ~/.aiglobal/.rulesync/)

If option 1 is intended, I'll revert this change and update the README instead.

Alternatively, if the global mode design isn't finalized yet, I can remove global mode support from this PR entirely and focus only on project mode for
Kiro IDE/CLI. We can add global support in a follow-up PR once the design is settled.

Testing

All tests passing. pnpm cicheck:code passes.

[dyoshikawa]

@maekawataiki Thank you so much. However this PR is too large to me. So please split it. For example, first, you can create a PR about Skills feature.