refactor(monorepo): extract coord-core

packages/coord-core/protocol/cli_error.go

@@ -0,0 +1,33 @@
+package protocol
+
+type CLIError struct {
+	Code     string
+	ExitCode int
+	Message  string
+	Err      error
+}
+
+func (e *CLIError) Error() string {
+	return e.Message
+}
+
+func (e *CLIError) Unwrap() error {
+	return e.Err
+}
+
+func NewCLIError(code string, exitCode int, message string, err error) error {
+	return &CLIError{
+		Code:     code,
+		ExitCode: exitCode,
+		Message:  message,
+		Err:      err,
+	}
+}
+
+func InvalidInput(message string, err error) error {
+	return NewCLIError("invalid_input", 30, message, err)
+}
+
+func NoMatchingWork(message string) error {
+	return NewCLIError("no_matching_work", 10, message, nil)
+}

packages/coord-core/protocol/json.go

@@ -0,0 +1,28 @@
+package protocol
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type Success struct {
+	OK      bool           `json:"ok"`
+	Command string         `json:"command"`
+	Data    map[string]any `json:"data,omitempty"`
+}
+
+type Error struct {
+	OK    bool         `json:"ok"`
+	Error ErrorPayload `json:"error"`
+}
+
+type ErrorPayload struct {
+	Code    string `json:"code"`
+	Message string `json:"message"`
+}
+
+func WriteJSON(w io.Writer, v any) error {
+	enc := json.NewEncoder(w)
+	enc.SetIndent("", "  ")
+	return enc.Encode(v)
+}