diff --git a/src/web-ui/src/flow_chat/components/modern/ProcessingIndicator.tsx b/src/web-ui/src/flow_chat/components/modern/ProcessingIndicator.tsx
index 1384af924..a5715e345 100644
--- a/src/web-ui/src/flow_chat/components/modern/ProcessingIndicator.tsx
+++ b/src/web-ui/src/flow_chat/components/modern/ProcessingIndicator.tsx
@@ -8,6 +8,7 @@
 import React, { useEffect, useRef, useState } from 'react';
 import { useTranslation } from 'react-i18next';
 import { DotMatrixLoader } from '@/component-library';
+import { processingHintsZh, processingHintsEn } from '../../constants/processingHints';
 import './ProcessingIndicator.scss';
 
 interface ProcessingIndicatorProps {
@@ -17,8 +18,8 @@ interface ProcessingIndicatorProps {
 }
 
 export const ProcessingIndicator: React.FC<ProcessingIndicatorProps> = ({ visible, reserveSpace = false }) => {
-  const { t } = useTranslation('flow-chat');
-  const hints = t('processingHints', { returnObjects: true }) as string[];
+  const { i18n } = useTranslation();
+  const hints = i18n.language.startsWith('zh') ? processingHintsZh : processingHintsEn;
 
   const [showHint, setShowHint] = useState(false);
   const [hintIndex, setHintIndex] = useState(0);
diff --git a/src/web-ui/src/flow_chat/constants/processingHints.ts b/src/web-ui/src/flow_chat/constants/processingHints.ts
new file mode 100644
index 000000000..b3fd4372e
--- /dev/null
+++ b/src/web-ui/src/flow_chat/constants/processingHints.ts
@@ -0,0 +1,420 @@
+/**
+ * Fun processing hint messages shown while the AI is working.
+ * Designed to ease user anxiety with light-hearted copy.
+ */
+
+export const processingHintsZh: string[] = [
+  // --- Tech / ML metaphors ---
+  "思维回路全速运转...",
+  "Token 们奋力排列中...",
+  "矩阵乘法进行中...",
+  "Transformer 全力变形...",
+  "Embeddings 寻找彼此...",
+  "最后一次梯度下降...",
+  "注意力机制已锁定...",
+  "思维发动机轰鸣启动...",
+  "思维路线图展开中...",
+  "激活函数全员上岗...",
+  "推理链跑起来了...",
+  "十四亿参数找答案...",
+  "上下文窗口挤一挤...",
+  "最合适的词正在出现...",
+  "正在 Debug 思维链...",
+  "推导链节节延伸...",
+  "在语言的岔路口选方向...",
+  "思路全线开动...",
+  "向量空间里迷了路...",
+  "量子态还没塌缩...",
+  "正在过滤噪音...",
+  "从千万想法里提炼精华...",
+  "灵感之流汇聚成河...",
+  "数百万次思考之后...",
+  "所有脑力为你服务...",
+  "思绪整装，即将出发...",
+
+  // --- Personification & humor ---
+  "给神经网络倒咖啡...",
+  "模型正在思考人生...",
+  "神经元群情激昂...",
+  "反向传播感悟中...",
+  "正在召开内部评审会...",
+  "多个思路正在 PK...",
+  "神经元：已就位...",
+  "神经网络的午夜加班...",
+  "正在假装镇定地高速运转...",
+  "暗中使力中...",
+  "绞尽脑汁为你服务...",
+  "正在对话宇宙...",
+  "向宇宙借创意...",
+
+  // --- Progress ---
+  "答案在路上了...",
+  "拼图最后一块到位...",
+  "思路合流中...",
+  "逻辑线头找到了...",
+  "差不多了，收尾中...",
+  "还差一点点...",
+  "就差临门一脚...",
+  "搞定了百分之九十九...",
+  "最终赢家即将揭晓...",
+  "答案正在着陆跑道...",
+  "最后校对一遍...",
+  "正在打磨最后措辞...",
+  "正在精简表达...",
+  "填充最后几块拼图...",
+  "高质量输出即将发射...",
+  "系好安全带，即将着陆...",
+  "即将顿悟...",
+  "答案就在嘴边...",
+
+  // --- Imagination ---
+  "翻阅无数可能中...",
+  "召唤创意，稍候...",
+  "脑洞已打开...",
+  "在十万八千条思路里取最优...",
+  "把你的问题投影到高维空间...",
+  "好问题！让我选一个薛定谔的答案...",
+  "在知识图谱里找路...",
+  "知识正在快速结晶...",
+  "把抽象想法具体化...",
+  "思维导图疯狂生长...",
+  "在概念森林砍出一条路...",
+  "想法从潜空间投影...",
+  "将混乱整理成诗...",
+  "折叠所有可能成一答...",
+  "举一反三进行中...",
+  "联想力爆棚中...",
+  "正在破解难题密码...",
+  "智慧的光正在聚焦...",
+
+  // --- Light & confident ---
+  "字斟句酌，只给精华...",
+  "想想，再想想...",
+  "已经快了（真的）...",
+  "快了！（不是在敷衍）",
+  "这道题，我会！",
+  "收到！全力处理中...",
+  "就在这里，别急...",
+  "全情投入，心无旁骛...",
+  "私下已想了七八种方案...",
+  "比想象中更努力...",
+  "认真的，从没这么认真过...",
+  "比光速还快（误）...",
+  "才华正在集中爆发...",
+  "正在憋大招...",
+  "超强输出，即将到来...",
+  "最强答案正在成形...",
+
+  // --- Concrete metaphors ---
+  "把散落的灵感拼起来...",
+  "用知识蒸馏一杯好茶...",
+  "灵感在深处发酵...",
+  "知识浪潮涌向输出端...",
+  "脑图正在扩展中...",
+  "思维潮水汇聚中...",
+  "思维火焰正旺...",
+  "知识在快速结晶...",
+  "脑内灯泡闪烁中...",
+  "思路打结，解开中...",
+  "思维信号穿梭神经丛...",
+  "秒速百公里地思考...",
+  "知识储备调用中...",
+  "知识能量正在充能...",
+  "智慧内核全速转...",
+
+  // --- Care & focus ---
+  "脑子已经全力转起来了...",
+  "正在为你量身定制...",
+  "把最好的留到最后...",
+  "用心对待每一个字...",
+  "全神贯注于你的问题...",
+  "注意力全给你了...",
+  "这一刻，全给你...",
+  "正在起草一份诚意回答...",
+  "灵感正在悄悄聚拢...",
+  "倾尽所有给你答案...",
+  "绝不摆烂，全力以赴...",
+  "努力营业中...",
+
+  // --- Short beats ---
+  "混沌转逻辑中...",
+  "思考齿轮咬合中...",
+  "解码深邃想法中...",
+  "合并所有子思路...",
+  "抢救迷失的语义...",
+  "拆解成千个小问题...",
+  "千个念头取最好...",
+  "把想法和文字对齐...",
+  "整理千头万绪中...",
+  "确认答案合理性中...",
+  "检查一遍，再检查...",
+  "把模糊变清晰中...",
+  "思维正在对焦...",
+  "多线程思维全力汇总...",
+  "把逻辑再拧紧一点...",
+  "让逻辑自己说话...",
+  "在语言丛林里寻宝...",
+
+  // --- More fun ---
+  "全速冲刺，答案在望...",
+  "思维扩容，装下更多...",
+  "为回答精心调味...",
+  "给逻辑链上润滑油...",
+  "把回答装进包裹打结中...",
+  "逻辑拼图已完成...",
+  "有条不紊，稳步推进...",
+  "万事就绪，答案出发...",
+  "脑波达到最高频...",
+  "思路刚打通，马上来...",
+  "解开语言的最后一层...",
+  "用推理缝合碎片...",
+  "召开紧急大脑会议...",
+  "整理出最佳路径...",
+  "正在审阅自己的思维...",
+  "正在进行最后冲刺...",
+  "努力中，绝不放弃...",
+  "正在做些不可思议的事...",
+  "思考容量拉满...",
+  "我在，我想，我输出...",
+  "后台小剧场精彩上演...",
+  "正在奋笔疾书...",
+  "在参数空间漫步...",
+  "正在将想法变为现实...",
+  "知识全力驰援中...",
+  "删删改改中...",
+  "像素精灵正在组字...",
+  "比特们正在排队...",
+  "比特流已启动...",
+  "思维启动加速度...",
+  "正在给回答注入灵魂...",
+  "准备好了吗？快了...",
+  "就差最后一步...",
+  "输出即将解冻...",
+  "神经丛林探险中...",
+  "答案雏形已在手...",
+  "思路正在合流...",
+  "尽力而为，必有所获...",
+  "正在快乐工作中...",
+  "大脑正在全速燃烧...",
+  "答案即将成形...",
+  "思维的潮水汇聚中...",
+  "正在把复杂变简单...",
+  "脑中千个念头筛选中...",
+  "正在为你开天辟地...",
+  "知识海洋里捞最优解...",
+  "万亿可能取其一...",
+  "答案正在破壳而出...",
+  "大脑高速公路全线畅通...",
+  "最佳路径已锁定...",
+  "思维齐步走，答案来了...",
+  "大招正在蓄力中...",
+  "答案即将横空出世...",
+];
+
+export const processingHintsEn: string[] = [
+  // --- Tech / ML metaphors ---
+  "Neural circuits running at full speed...",
+  "Tokens lining up in perfect order...",
+  "Matrix multiplications in progress...",
+  "Transformer: transforming at full capacity...",
+  "Embeddings searching for their soulmates...",
+  "One final gradient descent to go...",
+  "Attention heads: activated and locked...",
+  "Thought engine roaring to life...",
+  "Mental roadmap unfolding...",
+  "Activation functions reporting for duty...",
+  "Reasoning chain is running...",
+  "Spelunking through fourteen billion parameters...",
+  "Squeezing into the context window...",
+  "The perfect word is surfacing...",
+  "Debugging my own chain of thought...",
+  "Reasoning links extending one by one...",
+  "Picking a path through the language labyrinth...",
+  "All thought lanes open and moving...",
+  "Got lost in vector space, back soon...",
+  "Quantum state hasn't collapsed yet...",
+  "Filtering out the noise...",
+  "Distilling the best from a million thoughts...",
+  "Rivers of inspiration converging...",
+  "After millions of mental iterations...",
+  "All brainpower dedicated to you...",
+  "Thoughts packed and ready to go...",
+
+  // --- Personification & humor ---
+  "Feeding the model its morning coffee...",
+  "Pondering the meaning of tokens...",
+  "Neurons firing in passionate debate...",
+  "Backpropagating through life choices...",
+  "Holding an internal peer review...",
+  "Multiple ideas in a heated competition...",
+  "Neurons: reporting for duty...",
+  "Neural network pulling an all-nighter...",
+  "Pretending to be calm while going full speed...",
+  "Quietly working magic in the background...",
+  "Wracking every synapse for your sake...",
+  "Consulting the cosmos...",
+  "Borrowing creativity from the universe...",
+
+  // --- Progress ---
+  "Answer is on its way...",
+  "Last puzzle piece sliding into place...",
+  "Thoughts merging into one stream...",
+  "Found the thread of logic...",
+  "Almost done, wrapping up...",
+  "Just a tiny bit more...",
+  "One final push to go...",
+  "Ninety-nine percent done...",
+  "The winner is about to be revealed...",
+  "Answer on final approach for landing...",
+  "One last proofread...",
+  "Polishing the last few words...",
+  "Trimming the fat from the response...",
+  "Filling in the last few puzzle pieces...",
+  "High-quality output launching soon...",
+  "Fasten your seatbelt — landing shortly...",
+  "Epiphany incoming...",
+  "Answer is right on the tip of my tongue...",
+
+  // --- Imagination ---
+  "Rummaging through the multiverse of ideas...",
+  "Summoning creativity, please hold...",
+  "Brain hole: open...",
+  "Picking the best from ten thousand thoughts...",
+  "Projecting your question into high-dimensional space...",
+  "Great question! Picking from Schrödinger's answers...",
+  "Navigating the knowledge graph...",
+  "Knowledge crystallizing rapidly...",
+  "Turning abstract ideas into concrete ones...",
+  "Mind map expanding like wildfire...",
+  "Hacking a path through the concept forest...",
+  "Ideas projecting from latent space...",
+  "Turning chaos into something like poetry...",
+  "Folding all possible futures into one answer...",
+  "Analogical reasoning in progress...",
+  "Associative power: overclocked...",
+  "Cracking the code of a tough problem...",
+  "Focusing the beam of intelligence...",
+
+  // --- Light & confident ---
+  "Hand-picking only the best words...",
+  "Let me think... still thinking...",
+  "I'm fast, I promise...",
+  "Almost there! (Not stalling, really)",
+  "I know this one!",
+  "Roger that! Processing at full capacity...",
+  "Right here, no rush...",
+  "Fully in the zone right now...",
+  "Already tried seven different approaches internally...",
+  "Working harder than you'd expect...",
+  "Never been this focused in my life...",
+  "Faster than light (not really)...",
+  "Talent concentrated and detonating...",
+  "Charging up the big move...",
+  "Supercharged output incoming...",
+  "The best answer is taking shape...",
+
+  // --- Concrete metaphors ---
+  "Gathering the scattered sparks of inspiration...",
+  "Distilling knowledge into a fine brew...",
+  "Ideas fermenting in the neural depths...",
+  "Tidal waves of knowledge rushing to the output...",
+  "Mind map expanding at max speed...",
+  "Waves of thought converging...",
+  "Thinking flame burning bright...",
+  "Knowledge solidifying into form...",
+  "Lightbulb flickering in the back of my mind...",
+  "Untangling the knots in my reasoning...",
+  "Thought signals racing through the neural jungle...",
+  "Thinking at hundreds of miles per second...",
+  "Pulling from deep knowledge reserves...",
+  "Knowledge energy charging up...",
+  "Intelligence core running at max rpm...",
+
+  // --- Care & focus ---
+  "Brain already spinning at full tilt...",
+  "Tailoring this response just for you...",
+  "Saving the best for last...",
+  "Crafting every word with care...",
+  "Fully focused on your question...",
+  "All attention given to you...",
+  "This moment is entirely for you...",
+  "Drafting a sincere and thoughtful reply...",
+  "Inspiration quietly gathering...",
+  "Giving everything I've got for your answer...",
+  "Zero slacking, full effort...",
+  "Diligently serving your request...",
+
+  // --- Short beats ---
+  "Converting chaos into logic...",
+  "Gears of thought clicking into place...",
+  "Decoding your profound question...",
+  "Merging all sub-ideas...",
+  "Rescuing lost semantic meaning...",
+  "Breaking it into a thousand micro-problems...",
+  "Picking the best of a thousand thoughts...",
+  "Lining up thoughts with words...",
+  "Sorting through a tangle of threads...",
+  "Verifying the answer makes sense...",
+  "Checking once, then checking again...",
+  "Turning fuzzy into clear...",
+  "Thoughts coming into focus...",
+  "All threads converging at full speed...",
+  "Tightening the logic just a little more...",
+  "Letting logic speak for itself...",
+  "Treasure-hunting through the language forest...",
+
+  // --- More fun ---
+  "Sprinting to the finish line...",
+  "Expanding the thought tank...",
+  "Adding just the right pinch of creativity...",
+  "Oiling the chain of logic...",
+  "Tying a bow on your response package...",
+  "Logic puzzle: assembled...",
+  "Moving steadily, step by step...",
+  "Everything ready — answer departing now...",
+  "Brainwave frequency at all-time high...",
+  "Thread of thought just clicked — almost there...",
+  "Unwrapping the final layer of language...",
+  "Stitching the fragments together with reasoning...",
+  "Calling an emergency brain session...",
+  "Plotting the optimal path...",
+  "Reviewing my own chain of thought...",
+  "Making the final sprint...",
+  "Pushing through, won't give up...",
+  "Doing something kind of amazing right now...",
+  "Thinking capacity: maxed out...",
+  "I think, therefore I output...",
+  "A tiny drama unfolding backstage...",
+  "Writing at full speed...",
+  "Wandering the parameter space...",
+  "Turning ideas into reality...",
+  "All knowledge rallying to help...",
+  "Editing and re-editing...",
+  "Pixel elves composing text...",
+  "Bits falling into line...",
+  "Bit stream: engaged...",
+  "Thought engine accelerating...",
+  "Infusing the response with soul...",
+  "Ready for it? Almost there...",
+  "One last step to go...",
+  "Output thawing out...",
+  "Exploring the neural jungle...",
+  "Answer prototype taking form...",
+  "Thoughts flowing into one channel...",
+  "Doing my very best, as always...",
+  "Happily working away...",
+  "Brain burning at full speed...",
+  "Answer taking shape...",
+  "Waves of thought converging on the answer...",
+  "Turning complexity into simplicity...",
+  "Filtering thousands of thoughts right now...",
+  "Creating something from nothing, just for you...",
+  "Fishing the best answer from an ocean of knowledge...",
+  "One in a trillion possibilities, chosen for you...",
+  "Answer hatching right now...",
+  "The brain highway is clear and running fast...",
+  "Optimal path: locked in...",
+  "Thoughts marching in step — answer incoming...",
+  "Done in one second (approximately)...",
+  "Casting a chaos-to-clarity spell...",
+];
diff --git a/src/web-ui/src/locales/en-US/flow-chat.json b/src/web-ui/src/locales/en-US/flow-chat.json
index dcf2aaef4..2ac0e11a6 100644
--- a/src/web-ui/src/locales/en-US/flow-chat.json
+++ b/src/web-ui/src/locales/en-US/flow-chat.json
@@ -1,53 +1,4 @@
 {
-  "processingHints": [
-    "Rummaging through the multiverse of ideas...",
-    "Neural gears meshing at full speed...",
-    "Summoning creativity, please hold...",
-    "Bits and bytes lining up for you...",
-    "Got lost in vector space, back in a sec...",
-    "Quantum state hasn't collapsed yet...",
-    "Feeding the model its morning coffee...",
-    "Pondering the meaning of tokens...",
-    "Arranging thoughts into coherent shapes...",
-    "Ideas percolating in the neural depths...",
-    "Inspiration emerging from the void...",
-    "Running matrix multiplications, hang tight...",
-    "Trying very hard not to hallucinate...",
-    "Converting chaos into structured output...",
-    "Gears of thought clicking into place...",
-    "Decoding your profound question...",
-    "Backpropagating through life choices...",
-    "Neurons firing in passionate debate...",
-    "Spelunking through fourteen billion parameters...",
-    "Let me think... still thinking... almost there...",
-    "Borrowing creativity from the cosmos...",
-    "Collapsing Schrödinger's answer into one response...",
-    "Attention heads: activated. Target: locked...",
-    "Waves of thought converging into a response...",
-    "Breaking your question into a thousand micro-problems...",
-    "Turning your question over from every angle...",
-    "Aligning model outputs with human expectations...",
-    "Transformer: transforming at full capacity...",
-    "Thought signals racing through the neural jungle...",
-    "One final gradient descent to go...",
-    "Embeddings searching for their soulmates...",
-    "Trying to say something useful instead of just 'It depends'...",
-    "Debugging my own chain of thought...",
-    "Projecting ideas from latent space into reality...",
-    "Untangling the reasoning knots, one by one...",
-    "The thinking engine is running hot right now...",
-    "Fasten your seatbelt — landing soon...",
-    "High-quality output launching in 3... 2... 1...",
-    "Bit streams engaged, pixel elves composing text...",
-    "Folding all possible futures into one answer...",
-    "Extracting signal from the entropy of the universe...",
-    "Neural network doing its morning stretches...",
-    "Tidal waves of knowledge rushing toward the output port...",
-    "Your answer is being hand-crafted by tiny algorithms...",
-    "Resisting the urge to just make something up...",
-    "The inference engine is warmed up and raring to go...",
-    "Sifting through countless thoughts for the best one..."
-  ],
   "emptyState": {
     "welcomeBack": "Welcome back!",
     "workingIn": "You are working in <workspace>{{workspace}}</workspace>",
diff --git a/src/web-ui/src/locales/zh-CN/flow-chat.json b/src/web-ui/src/locales/zh-CN/flow-chat.json
index 8f5124d2f..034b9a9d6 100644
--- a/src/web-ui/src/locales/zh-CN/flow-chat.json
+++ b/src/web-ui/src/locales/zh-CN/flow-chat.json
@@ -1,53 +1,4 @@
 {
-  "processingHints": [
-    "正在翻阅无数可能...",
-    "思维回路全速运转中...",
-    "召唤创意，请稍候...",
-    "比特们正在排队就位...",
-    "向量空间里迷路了一下，马上回来...",
-    "量子态还没塌缩，稍等片刻...",
-    "正在给神经网络喝咖啡...",
-    "模型正在认真思考人生...",
-    "Token 们正在奋力排列中...",
-    "灵感正在脑海深处慢慢发酵...",
-    "在十万八千条思路里找最靠谱的那个...",
-    "矩阵乘法进行中，坐稳了...",
-    "AI 正在努力不说废话...",
-    "正在把混沌转换成逻辑...",
-    "思考的齿轮咬合中...",
-    "正在解码你深邃的想法...",
-    "反向传播人生感悟中...",
-    "神经元正在群情激昂...",
-    "在十四亿个参数里找答案...",
-    "让我想想，再想想，还在想...",
-    "脑洞已打开，正在向宇宙借创意...",
-    "正在深呼吸然后开始认真输出...",
-    "把你的问题转化成高维空间中的一个点...",
-    "思路打了个小结，正在解开...",
-    "正在把复杂问题拆成一千个小问题...",
-    "注意力机制已锁定目标...",
-    "脑中转了一千个念头，正在取最好的那个...",
-    "正在对齐价值观与输出期望...",
-    "Transformer 正在全力变形...",
-    "思维信号正在神经丛林中全速穿梭...",
-    "正在做最后一次梯度下降...",
-    "embeddings 们正在寻找彼此...",
-    "答案已经在路上了，正在整理仪容...",
-    "正在 Debug 自己的思维链...",
-    "拼图的最后一块刚找到，马上完工...",
-    "正在把想法从潜空间投影到现实...",
-    "思维的潮水正在汇聚，答案快来了...",
-    "大脑正在全速燃烧，文字即将涌现...",
-    "系好安全带，答案即将着陆...",
-    "注意！高质量输出即将发射...",
-    "比特流已启动，像素精灵正在组字...",
-    "正在把所有可能的未来折叠成一个回答...",
-    "好问题！让我从薛定谔的答案里挑一个...",
-    "脑子里的想法正在争先恐后地排队...",
-    "大脑正在假装很镇定地高速运转...",
-    "知识的浪潮正在涌向输出端口...",
-    "算法大脑已就绪，文字即将喷涌而出..."
-  ],
   "emptyState": {
     "welcomeBack": "欢迎回来！",
     "workingIn": "您正在 <workspace>{{workspace}}</workspace> 中",