improvement(mobile): refine responsive chat and workspace layouts

.agents/skills/emcn-design-review/SKILL.md

@@ -62,6 +62,10 @@ Use `ChipConfirmModal` (title "Delete/Remove {ItemType}", `confirm={{ label, onC
 
 Default: `size-[14px]`. Color: `text-[var(--text-icon)]`. Scale: 14px > 16px > 12px > 20px. Use the `size-*` shorthand — flag `h-[Npx] w-[Npx]` and `h-N w-N` pairs as refactor targets.
 
+## Mobile
+
+Check at 320px and 390px with touch, then desktop and fullscreen. Use `Chip`/`ChipLink`'s `mobileIconOnly` for familiar mobile toolbar actions, preserving accessible names; keep labels for ambiguous choices. Keep navigation, primary actions, and dismissal reachable without hover or dragging; aim for 44px touch targets with compact visible icons/button faces and 16px editable text. Match behavior to the actual container or viewport breakpoint. Contain horizontal scrolling to intentional tables/code, fit overlays to the dynamic viewport, and keep the composer/actions reachable with the keyboard open. Reuse EMCN tokens and brief motion with reduced-motion support; preserve desktop geometry.
+
 ## Anti-patterns to flag
 
 - Raw `<button>`/`<input>`, or legacy `Input`/`Textarea`/`Modal`, instead of the canonical chip components (`ChipInput`/`ChipTextarea`/`ChipModal`)

.claude/rules/sim-testing.md

@@ -47,8 +47,9 @@ contracts, and demonstrated regressions.
   (`sim_test`); `TEST_REDIS_URL` must be loopback. `packages/db/testing/test-infrastructure.ts` owns
   those checks. Isolate with a unique schema or generated IDs, and clean up in `afterAll`.
 - Integration files run one at a time against one shared database. A new `*.integration.ts` is
-  picked up by CI with no workflow change, and the run writes `test-results/integration.json`, which
-  CI uploads. Never add a passing suite to the quarantine list in `apps/sim/vitest.config.ts`.
+  picked up by CI with no workflow change, and the run writes the JSON report configured in
+  `vitest.shared.ts`, which CI uploads. Never add a passing suite to the quarantine list in
+  `apps/sim/vitest.config.ts`.
 - `bun run test:integration` starts disposable Postgres and Redis containers, provisions the schema,
   and runs both workspaces; pass filenames to narrow the `apps/sim` run.
 

.cursor/rules/sim-testing.mdc

@@ -45,8 +45,9 @@ contracts, and demonstrated regressions.
   (`sim_test`); `TEST_REDIS_URL` must be loopback. `packages/db/testing/test-infrastructure.ts` owns
   those checks. Isolate with a unique schema or generated IDs, and clean up in `afterAll`.
 - Integration files run one at a time against one shared database. A new `*.integration.ts` is
-  picked up by CI with no workflow change, and the run writes `test-results/integration.json`, which
-  CI uploads. Never add a passing suite to the quarantine list in `apps/sim/vitest.config.ts`.
+  picked up by CI with no workflow change, and the run writes the JSON report configured in
+  `vitest.shared.ts`, which CI uploads. Never add a passing suite to the quarantine list in
+  `apps/sim/vitest.config.ts`.
 - `bun run test:integration` starts disposable Postgres and Redis containers, provisions the schema,
   and runs both workspaces; pass filenames to narrow the `apps/sim` run.
 

.github/scripts/http-e2e.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 # Runs one end-to-end suite group over real HTTP, each against its own `next dev` app.
 #
-# Usage: http-e2e.sh <scim|cli|stop-after|desktop-inbox>   (run from apps/sim)
+# Usage: http-e2e.sh <scim|cli|stop-after|desktop-inbox|mobile>   (run from apps/sim)
 #
 # The job provides DATABASE_URL, BETTER_AUTH_SECRET and ENCRYPTION_KEY; each group sets the rest of
 # its app's environment here. Reports and server logs land in $RUNNER_TEMP/e2e.
@@ -17,7 +17,7 @@
 # telemetry flush runs detached and still writes .next/dev).
 set -euo pipefail
 
-group=${1:?usage: http-e2e.sh <scim|cli|stop-after|desktop-inbox>}
+group=${1:?usage: http-e2e.sh <scim|cli|stop-after|desktop-inbox|mobile>}
 report_dir="$RUNNER_TEMP/e2e"
 ready_timeout_seconds=300
 mkdir -p "$report_dir"
@@ -156,6 +156,19 @@ case "$group" in
       bun run test:desktop-inbox:e2e
     ;;
 
+  mobile)
+    export NEXT_PUBLIC_FORCE_HOSTED=false
+    export INTERNAL_API_SECRET=mobile-http-ci-local-secret-at-least-32-characters
+    export NODE_OPTIONS="${NODE_OPTIONS:+$NODE_OPTIONS }--max-old-space-size=12288"
+    bunx --no-install playwright install --with-deps chromium webkit
+    start_app mobile 3024 'mobile browser' record-http-status
+    MOBILE_E2E_BASE_URL="$NEXT_PUBLIC_APP_URL" \
+    MOBILE_E2E_DATABASE_URL="$DATABASE_URL" \
+    MOBILE_E2E_AUTH_SECRET="$BETTER_AUTH_SECRET" \
+    MOBILE_E2E_REPORT_PATH="$report_dir/mobile-e2e-report.json" \
+      bun run test:mobile:e2e
+    ;;
+
   *)
     echo "::error::Unknown end-to-end group: $group" >&2
     exit 2

.github/workflows/checks.yml

@@ -138,12 +138,12 @@ jobs:
   # The suites exercise HTTP behavior rather than a provisioning path, so they run once, against
   # the production (migrate) path. Each group's app environment lives in http-e2e.sh.
   #
-  # SCIM runs two suites against a hosted app and is the longest group, so it keeps the 8 vCPU
-  # runner; the others boot a smaller self-hosted app and fit on 4.
+  # SCIM's hosted suites and the mobile browser matrix use 8 vCPU; the other
+  # self-hosted suites fit on 4.
   e2e:
     name: e2e (${{ matrix.group }})
     runs-on: ${{ (vars.CI_PROVIDER == '' || vars.CI_PROVIDER == 'blacksmith') && matrix.runner || 'ubuntu-latest' }}
-    timeout-minutes: 20
+    timeout-minutes: ${{ matrix.group == 'mobile' && 40 || 20 }}
     strategy:
       fail-fast: false
       matrix:
@@ -156,6 +156,8 @@ jobs:
             runner: blacksmith-4vcpu-ubuntu-2404
           - group: desktop-inbox
             runner: blacksmith-4vcpu-ubuntu-2404
+          - group: mobile
+            runner: blacksmith-8vcpu-ubuntu-2404
     services:
       postgres:
         image: pgvector/pgvector:pg17

apps/desktop/src/renderer/credential-picker/index.tsx

@@ -57,7 +57,7 @@ function CredentialPicker({ configuration, api }: CredentialPickerProps) {
         align='start'
         sideOffset={0}
         avoidCollisions={false}
-        className='w-[320px] max-w-none'
+        className='w-[320px] max-w-none max-md:max-w-none!'
         aria-label='Saved passwords'
         onOpenAutoFocus={(event) => {
           event.preventDefault()

apps/sim/app/(interfaces)/chat/[identifier]/chat.tsx

@@ -1,6 +1,7 @@
 'use client'
 
-import { type RefObject, useCallback, useMemo, useRef, useState } from 'react'
+import { type ReactNode, type RefObject, useCallback, useMemo, useRef, useState } from 'react'
+import { usePrefersReducedMotion } from '@sim/emcn'
 import { createLogger } from '@sim/logger'
 import { generateId } from '@sim/utils/id'
 import {
@@ -24,6 +25,7 @@ import { useChatStreaming } from '@/app/(interfaces)/chat/hooks'
 import SSOAuth from '@/ee/sso/components/sso-auth'
 import { useDeployedChatConfig } from '@/hooks/queries/chats'
 import { useGitHubStars } from '@/hooks/queries/github-stars'
+import { useMobileViewport } from '@/hooks/use-mobile-viewport'
 
 const logger = createLogger('ChatClient')
 
@@ -51,7 +53,25 @@ function fileToBase64(file: File): Promise<string> {
   })
 }
 
+interface ChatViewportProps {
+  children: ReactNode
+}
+
+function ChatViewport({ children }: ChatViewportProps) {
+  const ref = useRef<HTMLDivElement>(null)
+  useMobileViewport({ ref })
+  return (
+    <div
+      ref={ref}
+      className='light desktop-title-bar-page fixed inset-0 z-[var(--z-dropdown)] flex flex-col bg-[var(--bg)] text-[var(--text-primary)] max-md:top-[var(--mobile-viewport-top,0px)] max-md:bottom-auto max-md:h-[var(--mobile-viewport-height,100dvh)] max-md:min-h-0!'
+    >
+      {children}
+    </div>
+  )
+}
+
 export default function ChatClient({ identifier }: { identifier: string }) {
+  const prefersReducedMotion = usePrefersReducedMotion()
   const [messages, setMessages] = useState<ChatMessage[]>([])
   const [isLoading, setIsLoading] = useState(false)
   const messagesEndRef = useRef<HTMLDivElement>(null)
@@ -95,7 +115,7 @@ export default function ChatClient({ identifier }: { identifier: string }) {
    * With `force` (jump button), re-pins to bottom.
    */
   const scrollToBottom = (options?: { behavior?: ScrollBehavior; force?: boolean }) => {
-    const behavior = options?.behavior ?? 'smooth'
+    const behavior = prefersReducedMotion ? 'auto' : (options?.behavior ?? 'smooth')
     const force = options?.force === true
     if (!force && !stickToBottomRef.current) return
     if (!messagesEndRef.current) return
@@ -125,7 +145,7 @@ export default function ChatClient({ identifier }: { identifier: string }) {
 
     container.scrollTo({
       top: container.scrollTop + messageRect.top - containerRect.top,
-      behavior: 'smooth',
+      behavior: prefersReducedMotion ? 'auto' : 'smooth',
     })
   }
 
@@ -309,7 +329,7 @@ export default function ChatClient({ identifier }: { identifier: string }) {
   }
 
   return (
-    <div className='light desktop-title-bar-page fixed inset-0 z-[var(--z-dropdown)] flex flex-col bg-[var(--bg)] text-[var(--text-primary)]'>
+    <ChatViewport>
       <DesktopTitleBarLane />
       <ChatHeader chatConfig={chatConfig} starCount={starCount} />
 
@@ -323,7 +343,7 @@ export default function ChatClient({ identifier }: { identifier: string }) {
         chatConfig={chatConfig}
       />
 
-      <div className='relative p-3 pb-4 md:p-4 md:pb-6'>
+      <div className='relative shrink-0 md:p-4 md:pb-6'>
         <div className='relative mx-auto max-w-3xl md:max-w-[748px]'>
           <ChatInput
             onSubmit={(value, files) => {
@@ -334,6 +354,6 @@ export default function ChatClient({ identifier }: { identifier: string }) {
           />
         </div>
       </div>
-    </div>
+    </ChatViewport>
   )
 }

apps/sim/app/(interfaces)/chat/components/header/header.tsx

@@ -1,6 +1,6 @@
 'use client'
 
-import { SimWordmark } from '@sim/emcn'
+import { OverflowText, SimWordmark } from '@sim/emcn'
 import Image from 'next/image'
 import Link from 'next/link'
 import { GithubIcon } from '@/components/icons'
@@ -27,33 +27,35 @@ export function ChatHeader({ chatConfig, starCount }: ChatHeaderProps) {
   return (
     <nav
       aria-label='Chat navigation'
-      className='flex w-full items-center justify-between px-4 pt-3 pb-[21px] sm:px-8 sm:pt-[8.5px] md:px-[44px] md:pt-4'
+      className='flex w-full shrink-0 items-center justify-between gap-3 px-4 pt-3 pb-[21px] sm:px-8 sm:pt-[8.5px] md:px-[44px] md:pt-4'
     >
-      <div className='flex items-center gap-[34px]'>
-        <div className='flex items-center gap-3'>
+      <div className='min-w-0 flex-1'>
+        <div className='flex min-w-0 items-center gap-3'>
           {customImage && (
             <Image
               src={customImage}
               alt={`${chatConfig?.title || 'Chat'} logo`}
               width={24}
               height={24}
               unoptimized
-              className='size-6 rounded-md object-cover'
+              className='size-6 shrink-0 rounded-md object-cover'
             />
           )}
-          <h2 className='text-[var(--text-primary)] text-lg'>
-            {chatConfig?.customizations?.headerText || chatConfig?.title || 'Chat'}
+          <h2 className='min-w-0 text-[var(--text-primary)] text-lg'>
+            <OverflowText
+              label={chatConfig?.customizations?.headerText || chatConfig?.title || 'Chat'}
+            />
           </h2>
         </div>
       </div>
 
       {!brand.logoUrl && (
-        <div className='flex items-center gap-4'>
+        <div className='flex shrink-0 items-center gap-4'>
           <a
             href='https://github.com/simstudioai/sim'
             target='_blank'
             rel='noopener noreferrer'
-            className='flex items-center gap-2 text-[var(--text-muted)] transition-colors hover-hover:text-[var(--text-primary)]'
+            className='hidden items-center gap-2 text-[var(--text-muted)] transition-colors hover-hover:text-[var(--text-primary)] md:flex'
             aria-label={`GitHub repository - ${starCount} stars`}
           >
             <GithubIcon className='size-[16px]' aria-hidden='true' />

apps/sim/app/(interfaces)/chat/components/input/input.tsx

@@ -8,6 +8,7 @@ import { createLogger } from '@sim/logger'
 import { generateId } from '@sim/utils/id'
 import { CHAT_ACCEPT_ATTRIBUTE } from '@/lib/uploads/utils/validation'
 import { PublicChatActionButton } from '@/app/(interfaces)/chat/components/input/public-chat-action-button'
+import { isTouchMobileViewport } from '@/hooks/use-is-mobile'
 
 const logger = createLogger('ChatInput')
 
@@ -49,11 +50,9 @@ export const ChatInput: React.FC<{
     const maxSize = 10 * 1024 * 1024
     const maxFiles = 15
 
-    for (let i = 0; i < selectedFiles.length; i++) {
+    for (const file of Array.from(selectedFiles)) {
       if (attachedFiles.length + newFiles.length >= maxFiles) break
 
-      const file = selectedFiles[i]
-
       if (file.size > maxSize) {
         setUploadErrors((prev) => [...prev, `${file.name} is too large (max 10MB)`])
         continue
@@ -111,7 +110,12 @@ export const ChatInput: React.FC<{
   }
 
   const handleKeyDown = (e: React.KeyboardEvent<HTMLTextAreaElement>) => {
-    if (e.key === 'Enter' && !e.shiftKey && !e.nativeEvent.isComposing) {
+    if (
+      e.key === 'Enter' &&
+      !e.shiftKey &&
+      !e.nativeEvent.isComposing &&
+      !isTouchMobileViewport()
+    ) {
       e.preventDefault()
       handleSubmit()
     }
@@ -125,7 +129,7 @@ export const ChatInput: React.FC<{
   const canSubmit = (inputValue.trim().length > 0 || attachedFiles.length > 0) && !isStreaming
 
   return (
-    <div className='fixed right-0 bottom-0 left-0 flex w-full items-center justify-center bg-linear-to-t from-[var(--bg)] to-transparent px-4 pb-4 md:px-0 md:pb-4'>
+    <div className='relative flex w-full shrink-0 items-center justify-center bg-linear-to-t from-[var(--bg)] to-transparent px-3 pb-[max(12px,env(safe-area-inset-bottom))] md:fixed md:right-0 md:bottom-0 md:left-0 md:px-0 md:pb-4'>
       <div className='w-full max-w-3xl md:max-w-[748px]'>
         {uploadErrors.length > 0 && (
           <div className='mb-3 flex flex-col gap-2'>
@@ -168,7 +172,7 @@ export const ChatInput: React.FC<{
           }}
         >
           {attachedFiles.length > 0 && (
-            <div className='mb-1.5 flex flex-wrap gap-1.5'>
+            <div className='mb-1.5 flex flex-wrap gap-1.5 max-md:max-h-24 max-md:overflow-y-auto max-md:overscroll-contain'>
               {attachedFiles.map((file) => (
                 <Tooltip.Root key={file.id}>
                   <Tooltip.Trigger asChild>
@@ -194,9 +198,11 @@ export const ChatInput: React.FC<{
                           e.stopPropagation()
                           handleRemoveFile(file.id)
                         }}
-                        className='absolute top-[2px] right-[2px] size-[16px] rounded-full bg-black/60 p-0 text-white opacity-0 hover-hover:text-white group-hover:opacity-100'
+                        className='absolute top-[2px] right-[2px] size-11 items-start justify-end p-0 focus-visible:opacity-100 md:pointer-fine:size-[16px] md:pointer-fine:opacity-0 md:pointer-fine:group-hover:opacity-100'
                       >
-                        <X className='size-[10px]' />
+                        <span className='flex size-7 items-center justify-center rounded-full bg-black/60 text-white md:pointer-fine:size-4'>
+                          <X className='size-[10px]' />
+                        </span>
                       </Button>
                     </div>
                   </Tooltip.Trigger>
@@ -215,7 +221,8 @@ export const ChatInput: React.FC<{
             onKeyDown={handleKeyDown}
             placeholder={isDragOver ? 'Drop files here...' : 'Enter a message...'}
             rows={1}
-            className='m-0 h-auto min-h-[24px] w-full resize-none overflow-y-auto overflow-x-hidden border-0 bg-transparent p-1 text-[15px] text-[var(--text-primary)] leading-[24px] caret-[var(--text-primary)] outline-hidden [-ms-overflow-style:none] [scrollbar-width:none] placeholder:text-[var(--text-muted)] focus-visible:ring-0 focus-visible:ring-offset-0 [&::-webkit-scrollbar]:hidden'
+            aria-label='Message'
+            className='m-0 h-auto min-h-[24px] w-full resize-none overflow-y-auto overflow-x-hidden border-0 bg-transparent p-1 text-[var(--text-primary)] text-md leading-[24px] caret-[var(--text-primary)] outline-hidden [-ms-overflow-style:none] [scrollbar-width:none] placeholder:text-[var(--text-muted)] focus-visible:ring-0 focus-visible:ring-offset-0 max-md:max-h-[min(200px,calc(var(--mobile-viewport-height,100dvh)*0.25))] md:text-base [&::-webkit-scrollbar]:hidden'
           />
 
           <div className='flex items-center justify-between'>

apps/sim/app/(interfaces)/chat/components/input/public-chat-action-button.tsx

@@ -12,6 +12,12 @@ interface PublicChatActionButtonProps
 
 /** Public chat's circular composer action, retaining its primary and quiet palettes. */
 export const PublicChatActionButton = forwardRef<HTMLButtonElement, PublicChatActionButtonProps>(
-  (props, ref) => <Button {...props} ref={ref} className='size-[28px] rounded-full p-0' />
+  (props, ref) => (
+    <Button
+      {...props}
+      ref={ref}
+      className='size-[44px] rounded-full bg-clip-content p-2 md:size-[28px] md:p-0'
+    />
+  )
 )
 PublicChatActionButton.displayName = 'PublicChatActionButton'

apps/sim/app/(interfaces)/chat/components/message-container/message-container.tsx

@@ -30,12 +30,12 @@ export function ChatMessageContainer({
   chatConfig,
 }: ChatMessageContainerProps) {
   return (
-    <div className='relative flex flex-1 flex-col overflow-hidden'>
+    <div className='relative flex min-h-0 min-w-0 flex-1 flex-col overflow-hidden'>
       <div
         ref={messagesContainerRef}
-        className='absolute inset-0 touch-pan-y overflow-y-auto overscroll-auto scroll-smooth'
+        className='absolute inset-0 touch-pan-y overflow-y-auto overscroll-contain scroll-smooth motion-reduce:scroll-auto'
       >
-        <div className='mx-auto max-w-3xl px-4 pt-10 pb-20'>
+        <div className='mx-auto max-w-3xl px-3 pt-4 pb-4 md:px-4 md:pt-10 md:pb-20'>
           {messages.length === 0 ? (
             <div className='flex flex-col items-center justify-center py-10'>
               <div className='space-y-2 text-center'>
@@ -68,7 +68,7 @@ export function ChatMessageContainer({
       </div>
 
       {showScrollButton && (
-        <div className='-translate-x-1/2 absolute bottom-16 left-1/2 z-20'>
+        <div className='-translate-x-1/2 absolute bottom-4 left-1/2 z-20 md:bottom-16'>
           <Button
             onClick={scrollToBottom}
             size='sm'