feat(bat): 完善工作流调度与 dashboard RPC

补全资源拉取、解析、翻译、重打包和本地化发布命令，支持单次、限定次数与周期调度。移除 TUI 计划并通过 schedule.* RPC 暴露给 bat-api dashboard。

Closes #43

internal/backendrpc/client.go

@@ -232,6 +232,29 @@ type UnityFSFieldPatchParams struct {
 	ExpectedValue      json.RawMessage `json:"expected_value,omitempty"`
 }
 
+// ScheduleMutationParams is shared by schedule.add, schedule.update, and
+// schedule.remove. Omitted pointer fields preserve the existing schedule on
+// update; clear_* fields explicitly remove values.
+type ScheduleMutationParams struct {
+	ID                 string   `json:"id,omitempty"`
+	Group              string   `json:"group,omitempty"`
+	Action             string   `json:"action,omitempty"`
+	Args               []string `json:"args,omitempty"`
+	NextRunUnixSeconds *uint64  `json:"next_run_unix_seconds,omitempty"`
+	DelaySeconds       *uint64  `json:"delay_seconds,omitempty"`
+	EverySeconds       *uint64  `json:"every_seconds,omitempty"`
+	Count              *uint64  `json:"count,omitempty"`
+	ClearArgs          bool     `json:"clear_args,omitempty"`
+	ClearEvery         bool     `json:"clear_every,omitempty"`
+	Enabled            *bool    `json:"enabled,omitempty"`
+}
+
+// ScheduleRunParams selects a schedule or runs every due enabled schedule.
+type ScheduleRunParams struct {
+	ID    string `json:"id,omitempty"`
+	Force bool   `json:"force,omitempty"`
+}
+
 // Ack is returned by accepted daemon control methods.
 type Ack struct {
 	Command       string `json:"command"`
@@ -427,6 +450,26 @@ func (c *Client) ResourceList(ctx context.Context, offset int, limit int) (*Reso
 	return &out, err
 }
 
+func (c *Client) ScheduleList(ctx context.Context) (json.RawMessage, error) {
+	return c.rawData(ctx, "schedule.list", nil)
+}
+
+func (c *Client) ScheduleAdd(ctx context.Context, params ScheduleMutationParams) (json.RawMessage, error) {
+	return c.rawData(ctx, "schedule.add", params)
+}
+
+func (c *Client) ScheduleUpdate(ctx context.Context, params ScheduleMutationParams) (json.RawMessage, error) {
+	return c.rawData(ctx, "schedule.update", params)
+}
+
+func (c *Client) ScheduleRemove(ctx context.Context, params ScheduleMutationParams) (json.RawMessage, error) {
+	return c.rawData(ctx, "schedule.remove", params)
+}
+
+func (c *Client) ScheduleRun(ctx context.Context, params ScheduleRunParams) (json.RawMessage, error) {
+	return c.rawData(ctx, "schedule.run", params)
+}
+
 func (c *Client) CatalogStatus(ctx context.Context) (json.RawMessage, error) {
 	return c.rawData(ctx, "catalog.status", nil)
 }