feat(bat-api): 实现内嵌 dashboard

Closes #46

internal/backendrpc/client.go

@@ -264,13 +264,24 @@ type ScheduleRunParams struct {
 	MaxRuns *uint64 `json:"max_runs,omitempty"`
 }
 
+// TranslationTaskUnitResultParam is the dashboard/manual-review subset of one
+// TextUnit result accepted by Rust translation.task.update.
+type TranslationTaskUnitResultParam struct {
+	UnitID         string `json:"unit_id"`
+	SourceText     string `json:"source_text"`
+	TranslatedText string `json:"translated_text"`
+}
+
 // TranslationTaskUpdateParams is used by translation.task.update to persist
-// provider worker state for one task in the current official release.
+// provider worker state and optional manual-review text for one task in the
+// current official release.
 type TranslationTaskUpdateParams struct {
-	TaskID        string `json:"task_id"`
-	Status        string `json:"status"`
-	FailureReason string `json:"failure_reason,omitempty"`
-	ProviderRunID string `json:"provider_run_id,omitempty"`
+	TaskID             string                           `json:"task_id"`
+	Status             string                           `json:"status"`
+	FailureReason      string                           `json:"failure_reason,omitempty"`
+	ProviderRunID      string                           `json:"provider_run_id,omitempty"`
+	Provider           string                           `json:"provider,omitempty"`
+	TranslationResults []TranslationTaskUnitResultParam `json:"translation_results,omitempty"`
 }
 
 // TranslationTaskListParams filters the Rust-owned translation task queue.