Add runtime abstraction and agent loop

Co-authored-by: codegirl007 <codegirl-007@users.noreply.github.com>

agentbox/internal/environment/environment.go

@@ -0,0 +1,48 @@
+package environment
+
+import (
+	"context"
+	"time"
+)
+
+type Command struct {
+	Path        string
+	Args        []string
+	Env         map[string]string
+	WindowTitle string
+}
+
+type InputType string
+
+const (
+	KeyDown   InputType = "key_down"
+	KeyUp     InputType = "key_up"
+	MouseMove InputType = "mouse_move"
+	MouseDown InputType = "mouse_down"
+	MouseUp   InputType = "mouse_up"
+	Wait      InputType = "wait"
+)
+
+type InputAction struct {
+	Type     InputType     `json:"type"`
+	Key      string        `json:"key,omitempty"`
+	X        int           `json:"x,omitempty"`
+	Y        int           `json:"y,omitempty"`
+	Button   int           `json:"button,omitempty"`
+	Duration time.Duration `json:"duration,omitempty"`
+}
+
+type LogEntry struct {
+	Stream  string    `json:"stream"`
+	Message string    `json:"message"`
+	Time    time.Time `json:"time"`
+}
+
+type Environment interface {
+	Start(context.Context) error
+	Launch(context.Context, Command) error
+	Screenshot(context.Context) ([]byte, error)
+	SendInput(context.Context, InputAction) error
+	Logs(context.Context) ([]LogEntry, error)
+	Stop(context.Context) error
+}