feat: add Kiro CLI support

Add Kiro (AWS AI IDE) as a supported tool with command adapter
that writes to .kiro/prompts/ with YAML frontmatter.

- Add Kiro to AI_TOOLS registry in config.ts
- Create kiro.ts adapter (GitHub Copilot pattern)
- Register adapter in index.ts and registry.ts
- Add legacy cleanup path for migration
- Update supported-tools.md documentation

Author: anilkmr-a2z

docs/supported-tools.md

@@ -29,6 +29,7 @@ For each tool you select, OpenSpec installs:
 | GitHub Copilot | `.github/skills/` | `.github/prompts/`\*\* |
 | iFlow | `.iflow/skills/` | `.iflow/commands/` |
 | Kilo Code | `.kilocode/skills/` | `.kilocode/workflows/` |
+| Kiro | `.kiro/skills/` | `.kiro/prompts/` |
 | OpenCode | `.opencode/skills/` | `.opencode/command/` |
 | Qoder | `.qoder/skills/` | `.qoder/commands/opsx/` |
 | Qwen Code | `.qwen/skills/` | `.qwen/commands/` |
@@ -55,7 +56,7 @@ openspec init --tools all
 openspec init --tools none
 ```
 
-**Available tool IDs:** `amazon-q`, `antigravity`, `auggie`, `claude`, `cline`, `codebuddy`, `codex`, `continue`, `costrict`, `crush`, `cursor`, `factory`, `gemini`, `github-copilot`, `iflow`, `kilocode`, `opencode`, `qoder`, `qwen`, `roocode`, `trae`, `windsurf`
+**Available tool IDs:** `amazon-q`, `antigravity`, `auggie`, `claude`, `cline`, `codebuddy`, `codex`, `continue`, `costrict`, `crush`, `cursor`, `factory`, `gemini`, `github-copilot`, `iflow`, `kiro`, `kilocode`, `opencode`, `qoder`, `qwen`, `roocode`, `trae`, `windsurf`
 
 ## What Gets Installed
 

src/core/command-generation/adapters/index.ts

@@ -20,6 +20,7 @@ export { geminiAdapter } from './gemini.js';
 export { githubCopilotAdapter } from './github-copilot.js';
 export { iflowAdapter } from './iflow.js';
 export { kilocodeAdapter } from './kilocode.js';
+export { kiroAdapter } from './kiro.js';
 export { opencodeAdapter } from './opencode.js';
 export { qoderAdapter } from './qoder.js';
 export { qwenAdapter } from './qwen.js';

src/core/command-generation/adapters/kiro.ts

@@ -0,0 +1,30 @@
+/**
+ * Kiro Command Adapter
+ *
+ * Formats commands for Kiro following its .prompt.md specification.
+ */
+
+import path from 'path';
+import type { CommandContent, ToolCommandAdapter } from '../types.js';
+
+/**
+ * Kiro adapter for command generation.
+ * File path: .kiro/prompts/opsx-<id>.prompt.md
+ * Frontmatter: description
+ */
+export const kiroAdapter: ToolCommandAdapter = {
+  toolId: 'kiro',
+
+  getFilePath(commandId: string): string {
+    return path.join('.kiro', 'prompts', `opsx-${commandId}.prompt.md`);
+  },
+
+  formatFile(content: CommandContent): string {
+    return `---
+description: ${content.description}
+---
+
+${content.body}
+`;
+  },
+};

src/core/command-generation/registry.ts

@@ -22,6 +22,7 @@ import { geminiAdapter } from './adapters/gemini.js';
 import { githubCopilotAdapter } from './adapters/github-copilot.js';
 import { iflowAdapter } from './adapters/iflow.js';
 import { kilocodeAdapter } from './adapters/kilocode.js';
+import { kiroAdapter } from './adapters/kiro.js';
 import { opencodeAdapter } from './adapters/opencode.js';
 import { qoderAdapter } from './adapters/qoder.js';
 import { qwenAdapter } from './adapters/qwen.js';
@@ -52,6 +53,7 @@ export class CommandAdapterRegistry {
     CommandAdapterRegistry.register(githubCopilotAdapter);
     CommandAdapterRegistry.register(iflowAdapter);
     CommandAdapterRegistry.register(kilocodeAdapter);
+    CommandAdapterRegistry.register(kiroAdapter);
     CommandAdapterRegistry.register(opencodeAdapter);
     CommandAdapterRegistry.register(qoderAdapter);
     CommandAdapterRegistry.register(qwenAdapter);

src/core/config.ts

@@ -34,6 +34,7 @@ export const AI_TOOLS: AIToolOption[] = [
   { name: 'GitHub Copilot', value: 'github-copilot', available: true, successLabel: 'GitHub Copilot', skillsDir: '.github' },
   { name: 'iFlow', value: 'iflow', available: true, successLabel: 'iFlow', skillsDir: '.iflow' },
   { name: 'Kilo Code', value: 'kilocode', available: true, successLabel: 'Kilo Code', skillsDir: '.kilocode' },
+  { name: 'Kiro', value: 'kiro', available: true, successLabel: 'Kiro', skillsDir: '.kiro' },
   { name: 'OpenCode', value: 'opencode', available: true, successLabel: 'OpenCode', skillsDir: '.opencode' },
   { name: 'Qoder', value: 'qoder', available: true, successLabel: 'Qoder', skillsDir: '.qoder' },
   { name: 'Qwen Code', value: 'qwen', available: true, successLabel: 'Qwen Code', skillsDir: '.qwen' },

src/core/legacy-cleanup.ts

@@ -42,6 +42,7 @@ export const LEGACY_SLASH_COMMAND_PATHS: Record<string, LegacySlashCommandPatter
   'cursor': { type: 'files', pattern: '.cursor/commands/openspec-*.md' },
   'windsurf': { type: 'files', pattern: '.windsurf/workflows/openspec-*.md' },
   'kilocode': { type: 'files', pattern: '.kilocode/workflows/openspec-*.md' },
+  'kiro': { type: 'files', pattern: '.kiro/prompts/openspec-*.prompt.md' },
   'github-copilot': { type: 'files', pattern: '.github/prompts/openspec-*.prompt.md' },
   'amazon-q': { type: 'files', pattern: '.amazonq/prompts/openspec-*.md' },
   'cline': { type: 'files', pattern: '.clinerules/workflows/openspec-*.md' },