feat(tasks): add inherited context and resilient LLM execution

Add read-only task context inheritance, ordered task-level LLM failover, live Worker controls, cascading task cleanup, FIFO task concurrency, cancellation diagnostics, UI updates, tests, build script, and changelog.

agent/tools_insert.go

@@ -398,13 +398,12 @@ func (t *ToolSet) addTaskScope() actool.CoreTool {
 	)
 }
 
-// listUntestedAssets lets the plan agent pull the CURRENT TASK's in-scope, not-yet-
-// tested assets on demand (filter by type, paginated) — so it can decide what to
-// test next itself, instead of coverage pushing a backlog list into every prompt.
+// listUntestedAssets lets the plan agent pull the current + directly inherited
+// scope's not-yet-tested assets on demand (filter by type, paginated).
 func (t *ToolSet) listUntestedAssets() actool.CoreTool {
 	return readTool(
 		"list_untested_assets",
-		"查询【本任务】范围内、还没被测过的资产（供你自己判断要不要补测，不代替你决策）。\n"+
+		"查询【本任务及直接关联任务】范围内、还没被事实锚点覆盖的资产（关联范围只读，供你自己判断要不要补测，不代替你决策）。\n"+
 			"可选按资产类型过滤：root_domain/subdomain/service/app/endpoint/ip。\n"+
 			"分页：page 从 1 起、page_size 默认 10。返回 {assets:[{id,type,label}], total, page, page_size}。仅任务上下文可用。",
 		obj(map[string]any{
@@ -432,7 +431,7 @@ func (t *ToolSet) listUntestedAssets() actool.CoreTool {
 				a.PageSize = 10
 			}
 			offset := (a.Page - 1) * a.PageSize
-			assets, total, err := t.as.ListUntestedAssets(t.taskID, t.ts.ID(), strings.TrimSpace(a.Type), a.PageSize, offset)
+			assets, total, err := t.as.ListUntestedAssetsWithSources(t.taskID, strings.TrimSpace(a.Type), a.PageSize, offset)
 			if err != nil {
 				return actool.Errorf(err.Error()), nil
 			}