fix(ci): align new-surface dry-run preview kinds with Schema

Whiteboard dry-run now stamps preview_kind=plan; mail export/share
drop [DRY-RUN] tags so plan evidence matches declared DryRunSpec.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/helpers/doc_whiteboard.go

@@ -168,9 +168,10 @@ func runWhiteboardInsert(cmd *cobra.Command, _ []string) error {
 
 	if deps.Caller.DryRun() {
 		return deps.Out.PrintJSON(map[string]any{
-			"dry_run":  true,
-			"executed": false,
-			"tool":     "insert_document_block",
+			"dry_run":      true,
+			"executed":     false,
+			"preview_kind": "plan",
+			"tool":         "insert_document_block",
 			"arguments": map[string]any{
 				"nodeId":           toolArgs["nodeId"],
 				"format":           "jsonml",

internal/helpers/mail.go

@@ -2218,6 +2218,8 @@ internetMessageId 来源：message send / draft send / message reply / message r
 			overwrite, _ := cmd.Flags().GetBool("overwrite")
 
 			if deps.Caller.DryRun() {
+				// Human plan summary (no "[DRY-RUN]" tag): Schema dry-run
+				// evidence classifies "操作:" + audited DryRun() as plan.
 				deps.Out.PrintKeyValue("操作", "导出邮件为 EML 文件")
 				deps.Out.PrintKeyValue("email", email)
 				deps.Out.PrintKeyValue("messageId", messageID)
@@ -2225,7 +2227,7 @@ internetMessageId 来源：message send / draft send / message reply / message r
 					deps.Out.PrintKeyValue("filename", filename)
 				}
 				deps.Out.PrintKeyValue("overwrite", fmt.Sprintf("%v", overwrite))
-				deps.Out.PrintInfo("[DRY-RUN] 编排: get_email_by_message_id → export_message_mime → 写入本地 .eml 文件")
+				deps.Out.PrintKeyValue("编排", "get_email_by_message_id → export_message_mime → 写入本地 .eml 文件")
 				return nil
 			}
 
@@ -2351,6 +2353,8 @@ internetMessageId 来源：message send / draft send / message reply / message r
 			}
 			skipConfirm, _ := cmd.Flags().GetBool("yes")
 			if deps.Caller.DryRun() {
+				// Human plan summary (no "[DRY-RUN]" tag): Schema dry-run
+				// evidence classifies "操作:" + audited DryRun() as plan.
 				deps.Out.PrintKeyValue("操作", "分享邮件至 IM 聊天")
 				deps.Out.PrintKeyValue("email", mustGetFlag(cmd, "email"))
 				deps.Out.PrintKeyValue("messageId", mustGetFlag(cmd, "id"))
@@ -2358,7 +2362,7 @@ internetMessageId 来源：message send / draft send / message reply / message r
 					deps.Out.PrintKeyValue("users", users)
 				}
 				deps.Out.PrintKeyValue("yes", fmt.Sprintf("%v", skipConfirm))
-				deps.Out.PrintInfo("[DRY-RUN] 仅预览分享计划，不发起真实分享请求")
+				deps.Out.PrintKeyValue("说明", "仅预览分享计划，不发起真实分享请求")
 				return nil
 			}
 			ctx := cmd.Context()