feat(hooks): add Claude Code hooks type definitions

🤖 GENERATED WITH ASSISTANCE OF [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

notepad.md

@@ -431,3 +431,38 @@ All tasks execution STARTED: Thu Dec 4 16:52:57 KST 2025
 
 ---
 
+## [2025-12-09 17:34] - Task 1: types.ts 포팅
+
+### DISCOVERED ISSUES
+- Stub types.ts had `PluginConfig` interface needed by hook-disabled.ts (from Task 0)
+- Full types.ts from opencode-cc-plugin did NOT have `PluginConfig`
+- Typecheck initially failed: Module has no exported member 'PluginConfig'
+
+### IMPLEMENTATION DECISIONS
+- Copied full types.ts (181 lines) from opencode-cc-plugin → oh-my-opencode
+- Preserved ALL types: ClaudeHooksConfig, HookMatcher, PreToolUseInput/Output, PostToolUseInput/Output
+- Preserved deprecated decision fields: `decision?: "allow" | "deny" | "approve" | "block" | "ask"`
+- Added `PluginConfig` interface at end (oh-my-opencode specific type needed by hook-disabled.ts)
+- Kept line 150 comment (`// "pending" | "in_progress" | "completed"`) - existing source comment
+
+### PROBLEMS FOR NEXT TASKS
+- PluginConfig is now available for all subsequent tasks
+- Full type definitions ready for Task 2, 3, 4+ to use
+
+### VERIFICATION RESULTS
+- Ran: `bun run typecheck` → exit 0, no errors
+- Verified: ClaudeHooksConfig, HookMatcher, HookCommand types exist
+- Verified: PreToolUseInput/Output, PostToolUseInput/Output types exist
+- Verified: deprecated decision field (approve/block) included in PreToolUseOutput
+- Verified: PluginConfig export added (fixes hook-disabled.ts import)
+
+### LEARNINGS
+- opencode-cc-plugin types.ts: 181 lines, no PluginConfig
+- oh-my-opencode requires PluginConfig for hook disabling functionality
+- Stub-to-full replacement pattern works: stub allows Task 0 typecheck, Task 1 replaces with full implementation
+- Must preserve project-specific types (PluginConfig) when porting from different codebases
+
+소요 시간: ~2분
+
+---
+

src/hooks/claude-code-hooks/types.ts

@@ -1,16 +1,24 @@
-// Temporary stub types for Task 0 - will be fully implemented in Task 1
-// These are minimal definitions to allow shared utilities to type-check
+/**
+ * Claude Code Hooks Type Definitions
+ * Maps Claude Code hook concepts to OpenCode plugin events
+ */
 
-export interface HookCommand {
-  type: string
-  command: string
-}
+export type ClaudeHookEvent =
+  | "PreToolUse"
+  | "PostToolUse"
+  | "UserPromptSubmit"
+  | "Stop"
 
 export interface HookMatcher {
   matcher: string
   hooks: HookCommand[]
 }
 
+export interface HookCommand {
+  type: "command"
+  command: string
+}
+
 export interface ClaudeHooksConfig {
   PreToolUse?: HookMatcher[]
   PostToolUse?: HookMatcher[]
@@ -18,7 +26,158 @@ export interface ClaudeHooksConfig {
   Stop?: HookMatcher[]
 }
 
-export type ClaudeHookEvent = "PreToolUse" | "PostToolUse" | "UserPromptSubmit" | "Stop"
+export interface PreToolUseInput {
+  session_id: string
+  transcript_path?: string
+  cwd: string
+  permission_mode?: PermissionMode
+  hook_event_name: "PreToolUse"
+  tool_name: string
+  tool_input: Record<string, unknown>
+  tool_use_id?: string
+  hook_source?: HookSource
+}
+
+export interface PostToolUseInput {
+  session_id: string
+  transcript_path?: string
+  cwd: string
+  permission_mode?: PermissionMode
+  hook_event_name: "PostToolUse"
+  tool_name: string
+  tool_input: Record<string, unknown>
+  tool_response: {
+    title?: string
+    output?: string
+    [key: string]: unknown
+  }
+  tool_use_id?: string
+  hook_source?: HookSource
+}
+
+export interface UserPromptSubmitInput {
+  session_id: string
+  cwd: string
+  permission_mode?: PermissionMode
+  hook_event_name: "UserPromptSubmit"
+  prompt: string
+  session?: {
+    id: string
+  }
+  hook_source?: HookSource
+}
+
+export type PermissionMode = "default" | "plan" | "acceptEdits" | "bypassPermissions"
+
+export type HookSource = "opencode-plugin"
+
+export interface StopInput {
+  session_id: string
+  transcript_path?: string
+  cwd: string
+  permission_mode?: PermissionMode
+  hook_event_name: "Stop"
+  stop_hook_active: boolean
+  todo_path?: string
+  hook_source?: HookSource
+}
+
+export type PermissionDecision = "allow" | "deny" | "ask"
+
+/**
+ * Common JSON fields for all hook outputs (Claude Code spec)
+ */
+export interface HookCommonOutput {
+  /** If false, Claude stops entirely */
+  continue?: boolean
+  /** Message shown to user when continue=false */
+  stopReason?: string
+  /** Suppress output from transcript */
+  suppressOutput?: boolean
+  /** Warning/message displayed to user */
+  systemMessage?: string
+}
+
+export interface PreToolUseOutput extends HookCommonOutput {
+  /** Deprecated: use hookSpecificOutput.permissionDecision instead */
+  decision?: "allow" | "deny" | "approve" | "block" | "ask"
+  /** Deprecated: use hookSpecificOutput.permissionDecisionReason instead */
+  reason?: string
+  hookSpecificOutput?: {
+    hookEventName: "PreToolUse"
+    permissionDecision: PermissionDecision
+    permissionDecisionReason?: string
+    updatedInput?: Record<string, unknown>
+  }
+}
+
+export interface PostToolUseOutput extends HookCommonOutput {
+  decision?: "block"
+  reason?: string
+  hookSpecificOutput?: {
+    hookEventName: "PostToolUse"
+    /** Additional context to provide to Claude */
+    additionalContext?: string
+  }
+}
+
+export interface HookResult {
+  exitCode: number
+  stdout?: string
+  stderr?: string
+}
+
+export interface TranscriptEntry {
+  type: "tool_use" | "tool_result" | "user" | "assistant"
+  timestamp: string
+  tool_name?: string
+  tool_input?: Record<string, unknown>
+  tool_output?: Record<string, unknown>
+  content?: string
+}
+
+export interface TodoItem {
+  id: string
+  content: string
+  status: "pending" | "in_progress" | "completed" | "cancelled"
+  priority?: "low" | "medium" | "high"
+  created_at: string
+  updated_at?: string
+}
+
+export interface ClaudeCodeTodoItem {
+  content: string
+  status: string // "pending" | "in_progress" | "completed"
+  activeForm: string
+}
+
+export interface TodoFile {
+  session_id: string
+  items: TodoItem[]
+  created_at: string
+  updated_at: string
+}
+
+export interface StopOutput {
+  decision?: "block" | "continue"
+  reason?: string
+  stop_hook_active?: boolean
+  permission_mode?: PermissionMode
+  inject_prompt?: string
+}
+
+export type ClaudeCodeContent =
+  | { type: "text"; text: string }
+  | { type: "tool_use"; id: string; name: string; input: Record<string, unknown> }
+  | { type: "tool_result"; tool_use_id: string; content: string }
+
+export interface ClaudeCodeMessage {
+  type: "user" | "assistant"
+  message: {
+    role: "user" | "assistant"
+    content: ClaudeCodeContent[]
+  }
+}
 
 export interface PluginConfig {
   disabledHooks?: boolean | ClaudeHookEvent[]