feat: implement multi-agent provider support in initialization process

Author: suemor233

…nges/multi-agent-provider/.metadata.yaml …4-21-multi-agent-provider/.metadata.yamlmarchen/changes/multi-agent-provider/.metadata.yaml renamed to marchen/archive/2026-04-21-multi-agent-provider/.metadata.yaml marchen/changes/multi-agent-provider/.metadata.yaml renamed to marchen/archive/2026-04-21-multi-agent-provider/.metadata.yaml

@@ -1,4 +1,5 @@
 name: multi-agent-provider
 schema: full
 createdAt: '2026-04-21T08:48:45.177Z'
-status: open
+status: archived
+archivedAt: '2026-04-21T09:26:07.838Z'

…n/changes/multi-agent-provider/design.md …026-04-21-multi-agent-provider/design.mdmarchen/changes/multi-agent-provider/design.md renamed to marchen/archive/2026-04-21-multi-agent-provider/design.md marchen/changes/multi-agent-provider/design.md renamed to marchen/archive/2026-04-21-multi-agent-provider/design.md

@@ -22,3 +22,4 @@
 - 2026-04-19: [replace-propose-lite-with-lite-workflow](./archive/2026-04-19-replace-propose-lite-with-lite-workflow/) — lite 工作流改为一键式：创建 tasks → 自动实现 → 询问归档，减少手动衔接
 - 2026-04-21: [migrate-openspec-archive](./archive/2026-04-21-migrate-openspec-archive/) — 将 openspec/changes/archive 下 21 个归档变更迁移到 marchen/archive，转换元数据格式并生成带摘要的 changelog
 - 2026-04-21: [add-version-short-flag](./archive/2026-04-21-add-version-short-flag/) — 支持 marchen -v 查看版本号
+- 2026-04-21: [multi-agent-provider](./archive/2026-04-21-multi-agent-provider/) — init 支持多 AI 工具选择（Claude Code + Codex），引入 AgentProvider 注册表架构

…changes/multi-agent-provider/proposal.md …6-04-21-multi-agent-provider/proposal.mdmarchen/changes/multi-agent-provider/proposal.md renamed to marchen/archive/2026-04-21-multi-agent-provider/proposal.md marchen/changes/multi-agent-provider/proposal.md renamed to marchen/archive/2026-04-21-multi-agent-provider/proposal.md

@@ -616,9 +616,9 @@ export interface CommandTemplate {
 
 /** 所有 command 模板 */
 export const COMMAND_TEMPLATES: Record<string, CommandTemplate> = {
-  'apply': { fileName: 'apply.md', content: COMMAND_APPLY },
-  'archive': { fileName: 'archive.md', content: COMMAND_ARCHIVE },
-  'explore': { fileName: 'explore.md', content: COMMAND_EXPLORE },
-  'lite': { fileName: 'lite.md', content: COMMAND_LITE },
-  'propose': { fileName: 'propose.md', content: COMMAND_PROPOSE },
+  apply: { fileName: 'apply.md', content: COMMAND_APPLY },
+  archive: { fileName: 'archive.md', content: COMMAND_ARCHIVE },
+  explore: { fileName: 'explore.md', content: COMMAND_EXPLORE },
+  lite: { fileName: 'lite.md', content: COMMAND_LITE },
+  propose: { fileName: 'propose.md', content: COMMAND_PROPOSE },
 }

…er/specs/agent-provider-registry/spec.md …er/specs/agent-provider-registry/spec.mdmarchen/changes/multi-agent-provider/specs/agent-provider-registry/spec.md renamed to marchen/archive/2026-04-21-multi-agent-provider/specs/agent-provider-registry/spec.md marchen/changes/multi-agent-provider/specs/agent-provider-registry/spec.md renamed to marchen/archive/2026-04-21-multi-agent-provider/specs/agent-provider-registry/spec.md

@@ -605,9 +605,9 @@ export interface SkillTemplate {
 
 /** 所有 skill 模板 */
 export const SKILL_TEMPLATES: Record<string, SkillTemplate> = {
-  'apply': { dirName: 'marchen-apply', content: SKILL_APPLY },
-  'archive': { dirName: 'marchen-archive', content: SKILL_ARCHIVE },
-  'explore': { dirName: 'marchen-explore', content: SKILL_EXPLORE },
-  'lite': { dirName: 'marchen-lite', content: SKILL_LITE },
-  'propose': { dirName: 'marchen-propose', content: SKILL_PROPOSE },
+  apply: { dirName: 'marchen-apply', content: SKILL_APPLY },
+  archive: { dirName: 'marchen-archive', content: SKILL_ARCHIVE },
+  explore: { dirName: 'marchen-explore', content: SKILL_EXPLORE },
+  lite: { dirName: 'marchen-lite', content: SKILL_LITE },
+  propose: { dirName: 'marchen-propose', content: SKILL_PROPOSE },
 }