chore: import upstream snapshot with attribution

internal/errclass/codemeta_task.go

@@ -0,0 +1,25 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package errclass
+
+import "github.com/larksuite/cli/errs"
+
+// taskCodeMeta holds task-service Lark code → CodeMeta mappings.
+// All Subtypes are framework-shared (errs.SubtypeXxx) — task does not declare
+// service-specific Subtypes because none of these codes carry semantics beyond
+// the cross-service taxonomy (NotFound / QuotaExceeded / etc.).
+// BuildAPIError consumes this map via mergeCodeMeta + LookupCodeMeta.
+var taskCodeMeta = map[int]CodeMeta{
+	1470400: {Category: errs.CategoryAPI, Subtype: errs.SubtypeInvalidParameters},            // invalid_params
+	1470403: {Category: errs.CategoryAuthorization, Subtype: errs.SubtypePermissionDenied},   // permission_denied (resource-level)
+	1470404: {Category: errs.CategoryAPI, Subtype: errs.SubtypeNotFound},                     // not_found
+	1470422: {Category: errs.CategoryAPI, Subtype: errs.SubtypeConflict, Retryable: true},    // conflict (retryable)
+	1470500: {Category: errs.CategoryAPI, Subtype: errs.SubtypeServerError, Retryable: true}, // server_error (retryable)
+	1470610: {Category: errs.CategoryAPI, Subtype: errs.SubtypeQuotaExceeded},                // assignee_limit
+	1470611: {Category: errs.CategoryAPI, Subtype: errs.SubtypeQuotaExceeded},                // follower_limit
+	1470612: {Category: errs.CategoryAPI, Subtype: errs.SubtypeQuotaExceeded},                // tasklist_member_limit
+	1470613: {Category: errs.CategoryAPI, Subtype: errs.SubtypeAlreadyExists},                // reminder_exists
+}
+
+func init() { mergeCodeMeta(taskCodeMeta, "task") }