Scaffold all 7 hook events and eliminate type casting

- Add missing hook handlers: Stop, SubagentStop, PreCompact
- Replace all string type casting with proper JSON unmarshaling
- Change ToolUseRequest.Parameters from map[string]interface{} to json.RawMessage
- Update helper methods to use json.Unmarshal directly to typed structs
- Replace speech notifications with simple logging notifications
- Update documentation to reflect all hook events and remove speech references
- Add comprehensive CLAUDE.md with architecture overview and development guidance

All hooks now use type-safe JSON handling without .(string) assertions.
Complete coverage of Claude Code events: PreToolUse, PostToolUse,
UserPromptSubmit, Notification, Stop, SubagentStop, PreCompact.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

cmd/install.go

@@ -87,7 +87,10 @@ func runInstall(cmd *cobra.Command, args []string) error {
 	fmt.Println("  • pre_tool_use: Validates bash commands and prevents sensitive file edits")
 	fmt.Println("  • post_tool_use: Logs tool usage and runs goimports on modified Go files")
 	fmt.Println("  • user_prompt_submit: Adds project context to prompts")
-	fmt.Println("  • notification: Speaks notifications aloud (macOS)")
+	fmt.Println("  • notification: Logs notification events")
+	fmt.Println("  • stop: Logs session completion")
+	fmt.Println("  • subagent_stop: Logs subagent completion")
+	fmt.Println("  • pre_compact: Handles context compaction events")
 	fmt.Println("\nTo test: echo '{\"event\":\"pre_tool_use\",\"tool\":\"Bash\",\"tool_use_request\":{\"tool\":\"Bash\",\"parameters\":{\"command\":\"ls\"}}}' | hooks run")
 
 	return nil