feat: add document sharing functionality across various modules

- Introduced ShareDocumentButton component for sharing documents.
- Added ShareDocumentDialog for email and WhatsApp sharing options.
- Integrated document sharing in estimates, invoices, inspections, job cards, bills, and purchase orders.
- Implemented useDocumentShare hook for handling share logic.
- Created DocumentShareClient for API interactions related to document sharing.
- Updated layouts and actions to include sharing options for relevant entities.

apps/dashboard/app/(authenticated)/sales/job-cards/[id]/attachments/page.tsx

@@ -10,7 +10,7 @@ import { useAuthApi } from "@/shared/useApi"
 import { confirm } from "@/shared/components/confirm-dialog"
 import { Button } from "@/shared/components/ui/button"
 import { Card, CardContent } from "@/shared/components/ui/card"
-import { JOB_CARD_ROUTES } from "@garage/api"
+import { ApiError, JOB_CARD_ROUTES } from "@garage/api"
 import DashboardPage from "@/base/components/layout/dashboard/dashboard-page"
 import { useJobCard } from "@/modules/job-cards/job-card-context"
 import { CONSTANTS } from "@/config/constants"
@@ -22,6 +22,62 @@ function getFileIcon(mimeType?: string) {
     return FileIcon
 }
 
+const ALLOWED_HINT = "Allowed: images, PDF, Office docs, audio, video."
+
+function describeAttachmentError(rawMessage: string, filename: string): string {
+    const msg = rawMessage.toLowerCase()
+    if (msg.includes("must be a file of type") || msg.includes("mimes")) {
+        return `${filename}: unsupported file type. ${ALLOWED_HINT}`
+    }
+    if (msg.includes("may not be greater") || msg.includes("max")) {
+        return `${filename}: exceeds 5 MB limit.`
+    }
+    if (msg.includes("must be a file")) {
+        return `${filename}: invalid file.`
+    }
+    return `${filename}: ${rawMessage}`
+}
+
+function showUploadError(err: unknown, files: File[]) {
+    if (!(err instanceof ApiError)) {
+        toast.error("Failed to upload attachment(s)")
+        return
+    }
+
+    const validation = err.validationErrors
+    if (!validation || Object.keys(validation).length === 0) {
+        toast.error(err.payload?.message ?? "Failed to upload attachment(s)")
+        return
+    }
+
+    const messages: string[] = []
+    for (const [key, msgs] of Object.entries(validation)) {
+        const firstMsg = Array.isArray(msgs) ? msgs[0] : String(msgs)
+        if (!firstMsg) continue
+
+        const match = key.match(/^attachments\.(\d+)$/)
+        if (match) {
+            const idx = Number(match[1])
+            const filename = files[idx]?.name ?? `File #${idx + 1}`
+            messages.push(describeAttachmentError(firstMsg, filename))
+        } else if (key === "attachments") {
+            messages.push(firstMsg)
+        } else {
+            messages.push(firstMsg)
+        }
+    }
+
+    if (messages.length === 0) {
+        toast.error(err.payload?.message ?? "Failed to upload attachment(s)")
+        return
+    }
+
+    const shown = messages.slice(0, 3)
+    const extra = messages.length - shown.length
+    shown.forEach((m) => toast.error(m))
+    if (extra > 0) toast.error(`...and ${extra} more`)
+}
+
 export default function JobCardAttachmentsPage() {
     const { id: jobCardId } = useParams<{ id: string }>()
     const api = useAuthApi()
@@ -66,18 +122,19 @@ export default function JobCardAttachmentsPage() {
         const files = e.target.files
         if (!files || files.length === 0) return
 
+        const fileList = Array.from(files)
         setIsUploading(true)
-        const promise = api.jobCards.addAttachment(jobCardId, Array.from(files))
-        toast.promise(promise, {
-            loading: "Uploading attachment(s)...",
-            success: "Attachment(s) uploaded successfully",
-            error: "Failed to upload attachment(s)",
-        })
+        const loadingToast = toast.loading("Uploading attachment(s)...")
 
         try {
-            await promise
+            await api.jobCards.addAttachment(jobCardId, fileList)
+            toast.dismiss(loadingToast)
+            toast.success("Attachment(s) uploaded successfully")
             queryClient.invalidateQueries({ queryKey })
             startRefreshTransition(() => router.refresh())
+        } catch (err) {
+            toast.dismiss(loadingToast)
+            showUploadError(err, fileList)
         } finally {
             setIsUploading(false)
             if (fileInputRef.current) {