fix(mothership): catch draft restore errors instead of crashing /home (#4433)

* fix(mothership): catch draft restore errors instead of crashing /home

Wrap the mount-time draft restore in try/catch with clearDraft on
throw, and coerce text to a string in the useState initializer.
A corrupt entry in mothership-drafts:v1 localStorage previously took
down the entire workspace via the error boundary.

* fix(mothership): defer state writes and log restore failures

Build the restored state in locals first and only apply on success
so a partial throw can't leave stale contexts in the UI with the
draft already cleared. Switch the empty catch to logger.error so
corrupt-draft incidents surface in production logs.

apps/sim/app/workspace/[workspaceId]/home/components/user-input/user-input.tsx

@@ -11,6 +11,7 @@ import {
   useRef,
   useState,
 } from 'react'
+import { createLogger } from '@sim/logger'
 import { Paperclip } from 'lucide-react'
 import { useParams } from 'next/navigation'
 import { Button, Tooltip } from '@/components/emcn'
@@ -58,6 +59,8 @@ import type { ChatContext } from '@/stores/panel'
 
 export type { FileAttachmentForApi } from '@/app/workspace/[workspaceId]/home/types'
 
+const logger = createLogger('UserInput')
+
 function getCaretAnchor(
   textarea: HTMLTextAreaElement,
   caretPos: number
@@ -148,7 +151,8 @@ export const UserInput = forwardRef<UserInputHandle, UserInputProps>(function Us
   const [value, setValue] = useState(() => {
     if (defaultValue) return defaultValue
     if (!draftScopeKey) return ''
-    return useMothershipDraftsStore.getState().drafts[draftScopeKey]?.text ?? ''
+    const text = useMothershipDraftsStore.getState().drafts[draftScopeKey]?.text
+    return typeof text === 'string' ? text : ''
   })
   const overlayRef = useRef<HTMLDivElement>(null)
   const plusMenuRef = useRef<PlusMenuHandle>(null)
@@ -189,14 +193,17 @@ export const UserInput = forwardRef<UserInputHandle, UserInputProps>(function Us
   useEffect(() => {
     if (hasRestoredDraftRef.current || !draftScopeKey) return
     hasRestoredDraftRef.current = true
-    const draft = useMothershipDraftsStore.getState().drafts[draftScopeKey]
-    if (!draft) return
-    if (draft.contexts?.length) {
-      contextManagement.setSelectedContexts(draft.contexts)
-    }
-    if (draft.fileAttachments?.length) {
-      files.restoreAttachedFiles(
-        draft.fileAttachments.map((a) => ({
+    let restoredContexts: ChatContext[] | null = null
+    let restoredFiles: AttachedFile[] | null = null
+    let caretText: string | null = null
+    try {
+      const draft = useMothershipDraftsStore.getState().drafts[draftScopeKey]
+      if (!draft) return
+      if (draft.contexts?.length) {
+        restoredContexts = draft.contexts
+      }
+      if (draft.fileAttachments?.length) {
+        restoredFiles = draft.fileAttachments.map((a) => ({
           id: a.id,
           name: a.filename,
           size: a.size,
@@ -205,13 +212,22 @@ export const UserInput = forwardRef<UserInputHandle, UserInputProps>(function Us
           key: a.key,
           uploading: false,
         }))
-      )
+      }
+      if (typeof draft.text === 'string' && draft.text.length > 0) {
+        caretText = draft.text
+      }
+    } catch (err) {
+      logger.error('Failed to read draft, clearing', { err })
+      useMothershipDraftsStore.getState().clearDraft(draftScopeKey)
+      return
     }
-    if (draft.text) {
+    if (restoredContexts) contextManagement.setSelectedContexts(restoredContexts)
+    if (restoredFiles) files.restoreAttachedFiles(restoredFiles)
+    if (caretText !== null) {
       const textarea = textareaRef.current
       if (textarea) {
         textarea.focus()
-        textarea.setSelectionRange(draft.text.length, draft.text.length)
+        textarea.setSelectionRange(caretText.length, caretText.length)
       }
     }
   }, []) // eslint-disable-line react-hooks/exhaustive-deps -- intentional mount-only restore