diff --git a/apps/web/vue3/index_ml.html b/apps/web/vue3/index_ml.html
index 0f5967946..adc74f6de 100644
--- a/apps/web/vue3/index_ml.html
+++ b/apps/web/vue3/index_ml.html
@@ -2158,7 +2158,7 @@
                             <el-icon class="is-loading" style="font-size: 18px; color: #67c23a; margin-right: 8px;"><loading /></el-icon>
                             <span>{{ ragProgress.current || '正在知识库中查找相关内容……' }}</span>
                             <el-button v-if="agentChatCancelable" size="small" style="margin-left: auto;" @click="cancelAgentChat">
-                                停止等待
+                                {{ t('stop-waiting') }}
                             </el-button>
                         </div>
                         <div v-if="ragProgress.events.length" style="margin-top: 9px; padding-left: 2px; max-height: 190px; overflow-y: auto;">
diff --git a/gfa_core/mas/agents/conversation_tools.py b/gfa_core/mas/agents/conversation_tools.py
index 6e4bcc4b4..7c253712e 100644
--- a/gfa_core/mas/agents/conversation_tools.py
+++ b/gfa_core/mas/agents/conversation_tools.py
@@ -264,6 +264,7 @@ class RecognizeAnalysisIntentArgs(BaseModel):
     query: str
     job_id: str = ""
     prefix: str = ""
+    language: str = "zh"
 
     _job_id_is_local = field_validator("job_id")(_validate_job_id)
     _prefix_is_literal = field_validator("prefix")(_validate_prefix)
@@ -1604,21 +1605,29 @@ def build_plantai_conversation_tools(
         *,
         workflow_id: str | None = None,
         guidance: bool = False,
+        language: str = "zh",
     ) -> str:
         """Adapt MainAgent memory to the original IntentAgent text contract."""
         text = str(query or "").strip()
+        en = language == "en"
+        if (
+            text.startswith("执行数据准备（genome_prepare）")
+            and "当前业务动作已由数据准备契约唯一确定" in text
+        ):
+            return text
         if goal_ledger is None:
             return text
         terms = goal_ledger.user_terms
         context: list[str] = []
         family = str(terms.get("gene_family") or "").strip()
         if family:
-            context.append(f"基因家族 {family}")
-        for key, label in (
-            ("target_species", "目标物种"),
-            ("reference_species", "参考物种"),
-            ("comparative_species", "比较物种"),
+            context.append(f"Gene family: {family}" if en else f"基因家族 {family}")
+        for key, label_zh, label_en in (
+            ("target_species", "目标物种", "Target species"),
+            ("reference_species", "参考物种", "Reference species"),
+            ("comparative_species", "比较物种", "Comparative species"),
         ):
+            label = label_en if en else label_zh
             values = terms.get(key) or ()
             if isinstance(values, (list, tuple)):
                 cleaned = [
@@ -1638,21 +1647,39 @@ def build_plantai_conversation_tools(
             if mode == "whole_genome":
                 enabled_designs = "、".join(business_context["enabled_designs"])
                 disabled_designs = "、".join(business_context["disabled_designs"])
-                context.append(
-                    f"RNA-seq业务模式 全基因组；{experiment_design} 是实验设计权威输入；"
-                    f"可解释设计为 {enabled_designs}，{disabled_designs} 本轮禁用；"
-                    "设计或 batch 降级不得静默发生"
-                )
+                if en:
+                    context.append(
+                        f"RNA-seq mode: whole genome; {experiment_design} is the authoritative experimental design input; "
+                        f"interpretable designs: {enabled_designs}, {disabled_designs} disabled this round; "
+                        "design or batch downgrades must not happen silently"
+                    )
+                else:
+                    context.append(
+                        f"RNA-seq业务模式 全基因组；{experiment_design} 是实验设计权威输入；"
+                        f"可解释设计为 {enabled_designs}，{disabled_designs} 本轮禁用；"
+                        "设计或 batch 降级不得静默发生"
+                    )
             else:
-                context.append(
-                    "RNA-seq业务模式 基因家族成员；使用已成功的全基因组差异表达结果"
-                    "和精确确认的基因家族成员进行投影；不得自动选择首个成员文件，"
-                    "不得隐式重跑差异表达"
-                )
+                if en:
+                    context.append(
+                        "RNA-seq mode: gene family member; use successful whole-genome differential expression results "
+                        "and precisely confirmed gene family members for projection; must not auto-select the first member file, "
+                        "must not implicitly re-run differential expression"
+                    )
+                else:
+                    context.append(
+                        "RNA-seq业务模式 基因家族成员；使用已成功的全基因组差异表达结果"
+                        "和精确确认的基因家族成员进行投影；不得自动选择首个成员文件，"
+                        "不得隐式重跑差异表达"
+                    )
         elif rna_route == "whole_genome":
-            context.append("RNA-seq模式 全基因组")
+            context.append(
+                "RNA-seq mode: whole genome" if en else "RNA-seq模式 全基因组"
+            )
         elif rna_route == "family_member":
-            context.append("RNA-seq模式 基因家族成员")
+            context.append(
+                "RNA-seq mode: gene family member" if en else "RNA-seq模式 基因家族成员"
+            )
         job_id = bound_job_id or str(terms.get("active_job_id") or "").strip()
         formal_config_exists = bool(
             job_id and (project_root / "input" / job_id / "config.xlsx").is_file()
@@ -1686,15 +1713,62 @@ def build_plantai_conversation_tools(
                     and family_matches
                 ):
                     subfamily_confirm_observed = True
-        if config_confirmed:
-            context.append("正式 config.xlsx 已确认")
+        genome_prepare_observed = False
+        canonical_request = None
+        if config_confirmed and not genome_prepare_observed:
+            if en:
+                context.append(
+                    "Formal config.xlsx confirmed; this indicates configuration has been verified, "
+                    "not that data preparation is complete. No data preparation completion evidence in current job; "
+                    "specific analysis intent and stages still determined by the existing analysis system"
+                )
+            else:
+                context.append(
+                    "正式 config.xlsx 已确认；这只表示配置已核对，不等于数据准备已经完成，"
+                    "当前 job 尚无数据准备完成证据；具体分析意图和阶段仍由现有分析系统判断"
+                )
+            if guidance and workflow_id in {
+                "data_preparation",
+                "gene_family",
+                "rnaseq_whole_genome",
+                "rnaseq_family_member",
+            }:
+                contract = load_canonical_workflow_contract("data_preparation")
+                transition = next(
+                    item
+                    for item in contract.transitions
+                    if item.from_state_id == "config_confirmed"
+                )
+                actions = {item.id: item for item in contract.actions}
+                target_stage = actions[transition.action_id].target_stage
+                if en:
+                    canonical_request = (
+                        f"Execute data preparation ({target_stage})\n"
+                        "Business action uniquely determined by data preparation contract"
+                    )
+                else:
+                    canonical_request = (
+                        f"执行数据准备（{target_stage}）\n"
+                        "当前业务动作已由数据准备契约唯一确定"
+                    )
         if family and subfamily_confirm_observed:
-            context.append(
-                "当前 job 的 subfamily_confirm 已成功完成，家族成员和亚家族分类表已确认，"
-                "这是当前项目状态事实；具体分析意图和阶段仍由现有分析系统判断"
-            )
+            if en:
+                context.append(
+                    "Current job's subfamily_confirm completed successfully; "
+                    "family members and subfamily classification table confirmed. "
+                    "This is a current project state fact; specific analysis intent and stages still determined by the existing analysis system"
+                )
+            else:
+                context.append(
+                    "当前 job 的 subfamily_confirm 已成功完成，家族成员和亚家族分类表已确认，"
+                    "这是当前项目状态事实；具体分析意图和阶段仍由现有分析系统判断"
+                )
+        if canonical_request:
+            return canonical_request
         if not context:
             return text
+        if en:
+            return f"{text}\nConfirmed context: {'; '.join(context)}."
         return f"{text}\n已确认上下文：{'；'.join(context)}。"
 
     registry.set_analysis_handoff_resolver(intent_query_with_confirmed_context)
@@ -1711,7 +1785,7 @@ def build_plantai_conversation_tools(
             receiver="intent_v2",
             message_type="recognize_intent",
             payload={
-                "query": intent_query_with_confirmed_context(args.query),
+                "query": intent_query_with_confirmed_context(args.query, language=args.language),
                 "job_id": job_id,
                 "prefix": args.prefix,
                 "workspace": str(project_root / "workspace" / job_id) if job_id else "",