diff --git a/src/api/api.ts b/src/api/api.ts
index 51897b61..3cb8a7f0 100644
--- a/src/api/api.ts
+++ b/src/api/api.ts
@@ -3,18 +3,8 @@ import { env } from "@/lib/env";
 import { resolveApiPrefixUrl } from "@/lib/resolve-api-prefix-url";
 import { API_PATHS } from "@/api/api-paths";
 import { mapHttpStatusToMessage, normalizeApiRequestError } from "@/api/api-error";
-import queryClient from "@/lib/query/query-client";
-import { stopQueryBroadcast } from "@/lib/query/setup-query-broadcast";
-import { clearAuth, getAccessToken } from "@/lib/auth/auth-storage";
-
-function clearSessionAndRedirectToLogin(): void {
-  clearAuth();
-  stopQueryBroadcast(queryClient);
-
-  if (typeof window !== "undefined" && window.location.pathname !== "/login") {
-    window.location.replace("/login");
-  }
-}
+import { getAccessToken } from "@/lib/auth/auth-storage";
+import { expireSessionAndRedirectToLogin } from "@/lib/auth/expire-session";
 
 function isAuthLoginRequest(request: Request): boolean {
   return request.url.includes(API_PATHS.authentication.login);
@@ -51,7 +41,7 @@ export const api: KyInstance = ky.create({
           return response;
         }
 
-        clearSessionAndRedirectToLogin();
+        expireSessionAndRedirectToLogin();
         return response;
       },
     ],
diff --git a/src/api/upload-form-with-progress.ts b/src/api/upload-form-with-progress.ts
new file mode 100644
index 00000000..90a2a254
--- /dev/null
+++ b/src/api/upload-form-with-progress.ts
@@ -0,0 +1,103 @@
+import { getAccessToken } from "@/lib/auth/auth-storage";
+import { expireSessionAndRedirectToLogin } from "@/lib/auth/expire-session";
+import { env } from "@/lib/env";
+import { resolveApiBaseUrl } from "@/lib/resolve-api-prefix-url";
+
+export interface UploadFormResult {
+  ok: boolean;
+  status: number;
+  data: unknown;
+}
+
+export interface UploadFormOptions {
+  signal?: AbortSignal;
+  onProgress?: (percent: number) => void;
+}
+
+function parseJsonBody(text: string): unknown {
+  if (!text.trim()) {
+    return undefined;
+  }
+
+  try {
+    return JSON.parse(text) as unknown;
+  } catch {
+    return undefined;
+  }
+}
+
+function createAbortError(): DOMException {
+  return new DOMException("The upload was aborted.", "AbortError");
+}
+
+/**
+ * hazard: Ky's `onUploadProgress` turns the body into a ReadableStream, and browsers only accept
+ * streamed request bodies over HTTP/2 — on HTTP/1.1 (Vite proxy, plain-HTTP hosts) the request dies
+ * as a network error before reaching the API. XHR reports progress on every transport.
+ */
+export function uploadFormWithProgress(
+  path: string,
+  body: FormData,
+  options?: UploadFormOptions,
+): Promise<UploadFormResult> {
+  return new Promise((resolve, reject) => {
+    if (options?.signal?.aborted) {
+      reject(createAbortError());
+      return;
+    }
+
+    const request = new XMLHttpRequest();
+    request.open("POST", `${resolveApiBaseUrl(env.apiUrl)}/${path.replace(/^\/+/, "")}`);
+    request.setRequestHeader("Accept", "application/json");
+
+    const token = getAccessToken();
+    if (token) {
+      request.setRequestHeader("Authorization", token);
+    }
+
+    const abortRequest = () => {
+      request.abort();
+    };
+    options?.signal?.addEventListener("abort", abortRequest);
+
+    const detachSignal = () => {
+      options?.signal?.removeEventListener("abort", abortRequest);
+    };
+
+    const { onProgress } = options ?? {};
+    if (onProgress) {
+      request.upload.addEventListener("progress", (event) => {
+        if (event.lengthComputable && event.total > 0) {
+          onProgress(Math.round((event.loaded / event.total) * 100));
+        }
+      });
+    }
+
+    request.addEventListener("load", () => {
+      detachSignal();
+      const { status } = request;
+
+      if (status === 401) {
+        expireSessionAndRedirectToLogin();
+      }
+
+      resolve({
+        ok: status >= 200 && status < 300,
+        status,
+        data: parseJsonBody(request.responseText),
+      });
+    });
+
+    request.addEventListener("error", () => {
+      detachSignal();
+      reject(new Error("Upload failed. Check your connection and try again."));
+    });
+
+    request.addEventListener("abort", () => {
+      detachSignal();
+      reject(createAbortError());
+    });
+
+    request.send(body);
+  });
+}
diff --git a/src/app/(protected)/workorders/_components/detail/use-slide-over-media-state.ts b/src/app/(protected)/workorders/_components/detail/use-slide-over-media-state.ts
index 94b60262..346ecb57 100644
--- a/src/app/(protected)/workorders/_components/detail/use-slide-over-media-state.ts
+++ b/src/app/(protected)/workorders/_components/detail/use-slide-over-media-state.ts
@@ -1,4 +1,4 @@
-import { useMemo, useState } from "react";
+import { useCallback, useEffect, useMemo, useState } from "react";
 import { toast } from "react-toastify";
 import type { MediaUploadRequest } from "@/app/(protected)/workorders/_components/media/media-uploader";
 import { useMediaUploadSession } from "@/app/(protected)/workorders/_hooks/use-media-upload-session";
@@ -9,9 +9,13 @@ import type {
   useDeleteWorkOrderMedia,
   useUpdateWorkOrderMediaCategory,
   useUploadWorkOrderMedia,
+  UploadWorkOrderMediaInput,
 } from "@/domain/work-orders/use-cases/use-work-order-mutations";
-
-const COMPLETION_MEDIA_PURPOSES = new Set(["Before", "After", "Completion"]);
+import {
+  isCompletionSurfaceMedia,
+  isExtrasSurfaceMedia,
+  type MediaSurfaceOwnership,
+} from "@/domain/work-orders/utils/partition-slide-over-media";
 
 type UseSlideOverMediaStateArgs = {
   detailForRow?: WorkOrderBoardDetail;
@@ -20,35 +24,108 @@ type UseSlideOverMediaStateArgs = {
   categorizeMediaMutation: ReturnType<typeof useUpdateWorkOrderMediaCategory>;
 };
 
+function addOwnedId(previous: Set<string>, id: string | undefined): Set<string> {
+  if (!id) return previous;
+  const next = new Set(previous);
+  next.add(id);
+  return next;
+}
+
+function dropOwnedId(previous: Set<string>, id: string): Set<string> {
+  if (!previous.has(id)) return previous;
+  const next = new Set(previous);
+  next.delete(id);
+  return next;
+}
+
+const OWNERSHIP_STORAGE_PREFIX = "work-order-media-surface:";
+
+function loadOwnership(workOrderId: string | number | undefined): MediaSurfaceOwnership {
+  if (workOrderId == null) return { completionOwnedIds: new Set(), extraOwnedIds: new Set() };
+  try {
+    const stored = sessionStorage.getItem(`${OWNERSHIP_STORAGE_PREFIX}${workOrderId}`);
+    if (!stored) return { completionOwnedIds: new Set(), extraOwnedIds: new Set() };
+    const parsed = JSON.parse(stored) as { completion?: unknown; extra?: unknown };
+    return {
+      completionOwnedIds: new Set(Array.isArray(parsed.completion) ? parsed.completion : []),
+      extraOwnedIds: new Set(Array.isArray(parsed.extra) ? parsed.extra : []),
+    };
+  } catch {
+    return { completionOwnedIds: new Set(), extraOwnedIds: new Set() };
+  }
+}
+
+function saveOwnership(
+  workOrderId: string | number | undefined,
+  ownership: MediaSurfaceOwnership,
+): void {
+  if (workOrderId == null) return;
+  try {
+    sessionStorage.setItem(
+      `${OWNERSHIP_STORAGE_PREFIX}${workOrderId}`,
+      JSON.stringify({
+        completion: [...ownership.completionOwnedIds],
+        extra: [...ownership.extraOwnedIds],
+      }),
+    );
+  } catch {
+    return;
+  }
+}
+
 export function useSlideOverMediaState({
   detailForRow,
   uploadMediaMutation,
   deleteMediaMutation,
   categorizeMediaMutation,
 }: UseSlideOverMediaStateArgs) {
+  const workOrderId = detailForRow?.info.id;
   const [mediaBatchPending, setMediaBatchPending] = useState(false);
+  const [ownership, setOwnershipState] = useState<MediaSurfaceOwnership>(() =>
+    loadOwnership(workOrderId),
+  );
+
+  useEffect(() => {
+    setOwnershipState(loadOwnership(workOrderId));
+  }, [workOrderId]);
+
+  const updateOwnership = useCallback(
+    (update: (current: MediaSurfaceOwnership) => MediaSurfaceOwnership) => {
+      setOwnershipState((current) => {
+        const next = update(current);
+        saveOwnership(workOrderId, next);
+        return next;
+      });
+    },
+    [workOrderId],
+  );
+
+  const persistCompletionUpload = useCallback(
+    async (input: UploadWorkOrderMediaInput) => {
+      const item = await uploadMediaMutation.mutateAsync(input);
+      updateOwnership((current) => ({
+        completionOwnedIds: addOwnedId(new Set(current.completionOwnedIds), item.id),
+        extraOwnedIds: dropOwnedId(new Set(current.extraOwnedIds), item.id),
+      }));
+      return item;
+    },
+    [updateOwnership, uploadMediaMutation],
+  );
+
   const { uploads, startUploads, retryUpload, cancelUpload, removeLocal, isLocal } =
-    useMediaUploadSession(detailForRow, (input) => uploadMediaMutation.mutateAsync(input));
+    useMediaUploadSession(detailForRow, persistCompletionUpload);
 
   const completionMedia = useMemo(
-    () =>
-      uploads.filter(
-        (item) =>
-          COMPLETION_MEDIA_PURPOSES.has(item.purpose ?? "") ||
-          item.uploadStatus === "uploading" ||
-          item.uploadStatus === "failed",
-      ),
-    [uploads],
+    () => uploads.filter((item) => isCompletionSurfaceMedia(item, ownership)),
+    [uploads, ownership],
   );
 
   const extrasUploads = useMemo(
     () =>
-      boardMediaItemsToMediaFiles(
-        (detailForRow?.media ?? []).filter(
-          (item) => item.category === "Extra" || item.category === "Aveta",
-        ),
+      boardMediaItemsToMediaFiles(detailForRow?.media ?? []).filter((item) =>
+        isExtrasSurfaceMedia(item, ownership),
       ),
-    [detailForRow?.media],
+    [detailForRow?.media, ownership],
   );
 
   const hasLocalUploading = uploads.some((item) => item.uploadStatus === "uploading");
@@ -68,7 +145,11 @@ export function useSlideOverMediaState({
     try {
       for (const file of files) {
         // Upload stays Extra; Aveta is applied only by an explicit Extra Docs PATCH.
-        await uploadMediaMutation.mutateAsync({ file, category: "Extra" });
+        const item = await uploadMediaMutation.mutateAsync({ file, category: "Extra" });
+        updateOwnership((current) => ({
+          completionOwnedIds: dropOwnedId(new Set(current.completionOwnedIds), item.id),
+          extraOwnedIds: addOwnedId(new Set(current.extraOwnedIds), item.id),
+        }));
       }
     } finally {
       setMediaBatchPending(false);
@@ -81,7 +162,20 @@ export function useSlideOverMediaState({
       toast.error("Missing work order version. Refresh and try again.");
       return;
     }
-    categorizeMediaMutation.mutate({ mediaId, category, workOrderVersion });
+    categorizeMediaMutation.mutate(
+      { mediaId, category, workOrderVersion },
+      {
+        onSuccess: () => {
+          updateOwnership((current) => ({
+            completionOwnedIds: dropOwnedId(new Set(current.completionOwnedIds), mediaId),
+            extraOwnedIds:
+              category === "Extra"
+                ? addOwnedId(new Set(current.extraOwnedIds), mediaId)
+                : dropOwnedId(new Set(current.extraOwnedIds), mediaId),
+          }));
+        },
+      },
+    );
   };
 
   const removeMedia = (id: string) => {
diff --git a/src/app/(protected)/workorders/_components/list/table/cells/use-vendor-dialog-form.ts b/src/app/(protected)/workorders/_components/list/table/cells/use-vendor-dialog-form.ts
new file mode 100644
index 00000000..cf3624c9
--- /dev/null
+++ b/src/app/(protected)/workorders/_components/list/table/cells/use-vendor-dialog-form.ts
@@ -0,0 +1,177 @@
+import { useEffect, useMemo, useState } from "react";
+import type { VendorDropdownItem } from "@/domain/work-orders/types/work-order";
+import type { VendorFormValues } from "@/domain/vendors/schemas/vendor-schema";
+import { useCreateVendor } from "@/domain/vendors/use-cases/use-create-vendor";
+import {
+  buildCompanyOptions,
+  buildTechnicianOptions,
+  phoneForOption,
+} from "@/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-options";
+import {
+  mergeVendorDropdownItems,
+  resolveVendorCompanyAnchor,
+} from "@/app/(protected)/workorders/_components/list/table/cells/resolve-vendor-company-anchor";
+import { resolveTechnicianKey } from "@/app/(protected)/workorders/_components/list/table/cells/resolve-technician-key";
+import { useVendorDialogSave } from "@/app/(protected)/workorders/_components/list/table/cells/use-vendor-dialog-save";
+import { computeVendorDialogCanSubmit } from "@/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-can-submit";
+import type { VendorPatch } from "@/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-types";
+
+type UseVendorDialogFormArgs = {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  vendorId: string | number;
+  company: string;
+  tech: string;
+  techPhone: string;
+  vendors: VendorDropdownItem[];
+  onSave: (patch: VendorPatch) => void;
+};
+
+export function useVendorDialogForm({
+  open,
+  onOpenChange,
+  vendorId,
+  company,
+  tech,
+  techPhone,
+  vendors,
+  onSave,
+}: UseVendorDialogFormArgs) {
+  const createVendor = useCreateVendor();
+  const [selectedCompany, setSelectedCompany] = useState(company);
+  const [selectedKey, setSelectedKey] = useState(() =>
+    resolveTechnicianKey(vendorId, tech, company, vendors),
+  );
+  const [t, setT] = useState(tech);
+  const [phone, setPhone] = useState(techPhone);
+  const [notes, setNotes] = useState("");
+  const [addedVendors, setAddedVendors] = useState<VendorDropdownItem[]>([]);
+  const [pendingCreates, setPendingCreates] = useState<Record<string, VendorFormValues>>({});
+  const [saveError, setSaveError] = useState<string | null>(null);
+
+  const allVendors = useMemo(
+    () => mergeVendorDropdownItems(vendors, addedVendors),
+    [vendors, addedVendors],
+  );
+
+  const companyOptions = useMemo(
+    () => buildCompanyOptions(allVendors, company),
+    [allVendors, company],
+  );
+
+  const technicianOptions = useMemo(
+    () => buildTechnicianOptions(allVendors, selectedCompany, tech, company),
+    [allVendors, selectedCompany, tech, company],
+  );
+
+  useEffect(() => {
+    if (open) {
+      const key = resolveTechnicianKey(vendorId, tech, company, vendors);
+      const initialOptions = buildTechnicianOptions(vendors, company, tech, company);
+      setSelectedCompany(company);
+      setSelectedKey(key);
+      setT(tech);
+      setPhone(techPhone || phoneForOption(tech, initialOptions));
+      setNotes("");
+      setAddedVendors([]);
+      setPendingCreates({});
+      setSaveError(null);
+    }
+    // invariant: rebuilding options after Add must not clear staged technician drafts.
+  }, [open, tech, techPhone, vendors, company, vendorId]);
+
+  const selected = technicianOptions.find((option) => option.key === selectedKey);
+  const resolvedCompany = selectedCompany;
+  const selectedVendor =
+    selected?.vendor ?? allVendors.find((vendor) => vendor.companyName === selectedCompany);
+
+  const { companyName: anchorCompanyName, companyVendor } = resolveVendorCompanyAnchor({
+    company: selectedCompany,
+    resolvedCompany,
+    selectedVendor,
+    vendors: allVendors,
+  });
+
+  const canSubmit = computeVendorDialogCanSubmit({
+    current: {
+      company: selectedCompany,
+      selectedKey,
+      phone,
+      notes,
+      pendingCreateCount: Object.keys(pendingCreates).length,
+    },
+    baseline: {
+      company,
+      selectedKey: resolveTechnicianKey(vendorId, tech, company, vendors),
+      phone:
+        techPhone || phoneForOption(tech, buildTechnicianOptions(vendors, company, tech, company)),
+      notes: "",
+      pendingCreateCount: 0,
+    },
+  });
+
+  const { handleSave } = useVendorDialogSave({
+    allVendors,
+    pendingCreates,
+    selectedKey,
+    selectedVendor,
+    resolvedCompany,
+    anchorCompanyName,
+    tech: selected?.name ?? t,
+    phone,
+    createVendor,
+    onSave,
+    onOpenChange,
+    setSaveError,
+    canSubmit,
+  });
+
+  return {
+    companyOptions,
+    technicianOptions,
+    selected,
+    t,
+    phone,
+    notes,
+    resolvedCompany,
+    selectedVendor,
+    selectedCompany,
+    selectedKey,
+    anchorCompanyName,
+    companyVendor,
+    saveError,
+    canSubmit,
+    isPending: createVendor.isPending,
+    handleSave,
+    handleCompanyPick: (nextCompany: string) => {
+      const selectedOption = technicianOptions.find((option) => option.key === selectedKey);
+      setSelectedCompany(nextCompany);
+      if (selectedOption?.company !== nextCompany) {
+        setAddedVendors([]);
+        setPendingCreates({});
+        setSelectedKey("");
+        setT("");
+        setPhone("");
+      }
+    },
+    handlePick: (key: string) => {
+      const option = technicianOptions.find((o) => o.key === key);
+      setSelectedKey(key);
+      setT(option?.name ?? key);
+      setPhone(option?.phone || phoneForOption(option?.name ?? key, technicianOptions));
+    },
+    handleTechnicianCreated: (
+      created: VendorDropdownItem,
+      createdPhone: string,
+      payload: VendorFormValues,
+    ) => {
+      setAddedVendors((current) => [...current, created]);
+      setPendingCreates((current) => ({ ...current, [String(created.id)]: payload }));
+      setSelectedKey(String(created.id));
+      setT(created.contactName);
+      setPhone(createdPhone);
+    },
+    setPhone,
+    setNotes,
+  };
+}
diff --git a/src/app/(protected)/workorders/_components/list/table/cells/use-vendor-dialog-save.ts b/src/app/(protected)/workorders/_components/list/table/cells/use-vendor-dialog-save.ts
index 502714c6..619bc6c9 100644
--- a/src/app/(protected)/workorders/_components/list/table/cells/use-vendor-dialog-save.ts
+++ b/src/app/(protected)/workorders/_components/list/table/cells/use-vendor-dialog-save.ts
@@ -18,6 +18,7 @@ type UseVendorDialogSaveArgs = {
   onSave: (patch: VendorPatch) => void;
   onOpenChange: (open: boolean) => void;
   setSaveError: (error: string | null) => void;
+  canSubmit: boolean;
 };
 
 export function useVendorDialogSave({
@@ -33,6 +34,7 @@ export function useVendorDialogSave({
   onSave,
   onOpenChange,
   setSaveError,
+  canSubmit,
 }: UseVendorDialogSaveArgs) {
   const resolveSaveVendor = () =>
     allVendors.find((vendor) => String(vendor.id) === selectedKey) ??
@@ -44,6 +46,7 @@ export function useVendorDialogSave({
     selectedVendor;
 
   const handleSave = async () => {
+    if (!canSubmit) return;
     setSaveError(null);
     let saveVendor = resolveSaveVendor();
     const pendingPayload = saveVendor ? pendingCreates[String(saveVendor.id)] : undefined;
@@ -65,8 +68,8 @@ export function useVendorDialogSave({
     onSave({
       vendorId: saveVendor ? String(saveVendor.id) : "",
       company: resolvedCompany || anchorCompanyName,
-      tech: saveVendor?.contactName ?? tech,
-      techPhone: phone,
+      tech: selectedKey ? (saveVendor?.contactName ?? tech) : "",
+      techPhone: selectedKey ? phone : "",
     });
     onOpenChange(false);
   };
diff --git a/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-body.tsx b/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-body.tsx
index 5b58de5e..928bfe51 100644
--- a/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-body.tsx
+++ b/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-body.tsx
@@ -1,4 +1,4 @@
-import { Wrench } from "lucide-react";
+import { Building2, Wrench } from "lucide-react";
 import {
   DLG_INPUT_CLS,
   DLG_INPUT_STYLE,
@@ -10,9 +10,14 @@ import { FieldLabel } from "@/app/(protected)/workorders/_components/list/table/
 import { VendorDialogAddTechnician } from "@/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-add-technician";
 import { VendorDialogCompanyCard } from "@/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-company-card";
 import type { VendorFormValues } from "@/domain/vendors/schemas/vendor-schema";
-import type { TechnicianOption } from "@/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-options";
+import type {
+  CompanyOption,
+  TechnicianOption,
+} from "@/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-options";
 
 type VendorDialogBodyProps = {
+  selectedCompany: string;
+  companyOptions: CompanyOption[];
   selectedKey: string;
   technicianOptions: TechnicianOption[];
   anchorCompanyName: string;
@@ -23,6 +28,7 @@ type VendorDialogBodyProps = {
   resolvedCompany: string;
   selectedVendor: VendorDropdownItem | undefined;
   saveError: string | null;
+  onCompanyPick: (company: string) => void;
   onPick: (key: string) => void;
   onPhoneChange: (phone: string) => void;
   onNotesChange: (notes: string) => void;
@@ -34,6 +40,8 @@ type VendorDialogBodyProps = {
 };
 
 export function VendorDialogBody({
+  selectedCompany,
+  companyOptions,
   selectedKey,
   technicianOptions,
   anchorCompanyName,
@@ -44,6 +52,7 @@ export function VendorDialogBody({
   resolvedCompany,
   selectedVendor,
   saveError,
+  onCompanyPick,
   onPick,
   onPhoneChange,
   onNotesChange,
@@ -53,17 +62,46 @@ export function VendorDialogBody({
     <>
       <div className="mt-3 space-y-3">
         <div>
-          <FieldLabel>Technician</FieldLabel>
+          <FieldLabel required>Company</FieldLabel>
+          <WizardFieldSelect
+            value={selectedCompany}
+            placeholder="Select company …"
+            icon={
+              <Building2
+                size={14}
+                className="shrink-0"
+                style={{ color: "var(--color-text-muted)" }}
+              />
+            }
+            searchPlaceholder="Search company…"
+            options={companyOptions.map((option) => ({
+              key: option.key,
+              label: option.label,
+            }))}
+            onPick={onCompanyPick}
+          />
+        </div>
+
+        {Boolean(resolvedCompany) && (
+          <div>
+            <FieldLabel>Company info</FieldLabel>
+            <VendorDialogCompanyCard company={resolvedCompany} vendor={selectedVendor} />
+          </div>
+        )}
+
+        <div>
+          <FieldLabel>Technician (optional)</FieldLabel>
           <WizardFieldSelect
             value={selectedKey}
-            placeholder="Search technician …"
+            placeholder={selectedCompany ? "Select technician …" : "Pick a company first"}
+            disabled={!selectedCompany}
             icon={
               <Wrench size={14} className="shrink-0" style={{ color: "var(--color-text-muted)" }} />
             }
             searchPlaceholder="Search technician…"
             options={technicianOptions.map((option) => ({
               key: option.key,
-              label: option.label,
+              label: option.name,
             }))}
             onPick={onPick}
           />
@@ -80,7 +118,7 @@ export function VendorDialogBody({
 
         {Boolean(tech) && (
           <div>
-            <FieldLabel>Technician Phone</FieldLabel>
+            <FieldLabel>Technician Phone (optional)</FieldLabel>
             <input
               type="tel"
               value={phone}
@@ -91,15 +129,8 @@ export function VendorDialogBody({
           </div>
         )}
 
-        {Boolean(resolvedCompany) && (
-          <div>
-            <FieldLabel>Company</FieldLabel>
-            <VendorDialogCompanyCard company={resolvedCompany} vendor={selectedVendor} />
-          </div>
-        )}
-
         <div>
-          <FieldLabel>Notes</FieldLabel>
+          <FieldLabel>Notes (optional)</FieldLabel>
           <textarea
             value={notes}
             onChange={(e) => onNotesChange(e.target.value)}
diff --git a/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-can-submit.ts b/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-can-submit.ts
new file mode 100644
index 00000000..3a0ddc19
--- /dev/null
+++ b/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-can-submit.ts
@@ -0,0 +1,26 @@
+export type VendorDialogSubmitSnapshot = {
+  company: string;
+  selectedKey: string;
+  phone: string;
+  notes: string;
+  pendingCreateCount: number;
+};
+
+type VendorDialogCanSubmitInput = {
+  current: VendorDialogSubmitSnapshot;
+  baseline: VendorDialogSubmitSnapshot;
+};
+
+export function computeVendorDialogCanSubmit({
+  current,
+  baseline,
+}: VendorDialogCanSubmitInput): boolean {
+  const valid = current.company.trim() !== "";
+  const hasNewTechs = current.pendingCreateCount > 0;
+  const dirty =
+    current.company !== baseline.company ||
+    current.selectedKey !== baseline.selectedKey ||
+    current.phone !== baseline.phone ||
+    current.pendingCreateCount !== baseline.pendingCreateCount;
+  return valid && (dirty || hasNewTechs);
+}
diff --git a/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-company-card.tsx b/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-company-card.tsx
index 783b438b..b14f8a4a 100644
--- a/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-company-card.tsx
+++ b/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-company-card.tsx
@@ -1,4 +1,4 @@
-import { ExternalLink, Mail, User, Wrench } from "lucide-react";
+import { ExternalLink, Mail, MapPin } from "lucide-react";
 import { Detail } from "@/app/(protected)/workorders/_components/wizard/wizard-labels";
 import type { VendorDropdownItem } from "@/domain/work-orders/types/work-order";
 import { formatVendorDistance } from "@/domain/work-orders/utils/vendor-dropdown-label";
@@ -30,10 +30,7 @@ export function VendorDialogCompanyCard({ company, vendor }: VendorDialogCompany
           </span>
         )}
       </div>
-      {Boolean(vendor?.contactName) && <Detail icon={User} text={vendor?.contactName ?? ""} />}
-      {Boolean(vendor?.tradeSpecialties) && (
-        <Detail icon={Wrench} text={vendor?.tradeSpecialties ?? ""} />
-      )}
+      {Boolean(vendor?.address) && <Detail icon={MapPin} text={vendor?.address ?? ""} />}
       {Boolean(email) && <Detail icon={Mail} text={email} />}
       {vendor != null && Boolean(vendor.address) && (
         <a
diff --git a/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-footer.tsx b/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-footer.tsx
index e6a6f48d..954382ad 100644
--- a/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-footer.tsx
+++ b/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-footer.tsx
@@ -5,6 +5,13 @@ type VendorDialogFooterProps = {
   onCancel: () => void;
   onSave: () => void;
   viewOnly?: boolean;
+  canSubmit?: boolean;
+};
+
+const lookDisabledSx = {
+  opacity: 0.5,
+  cursor: "not-allowed",
+  "&:hover": { backgroundColor: "var(--color-primary)", opacity: 0.5 },
 };
 
 export function VendorDialogFooter({
@@ -12,6 +19,7 @@ export function VendorDialogFooter({
   onCancel,
   onSave,
   viewOnly = false,
+  canSubmit = false,
 }: VendorDialogFooterProps) {
   if (viewOnly) {
     return (
@@ -36,7 +44,13 @@ export function VendorDialogFooter({
       <Button
         className="min-h-0 px-3 py-1 text-[12px]"
         disabled={isPending}
-        onClick={() => void onSave()}
+        aria-disabled={!canSubmit && !isPending}
+        // why: AAP Save stays clickable; native disabled would change the no-op look-disabled gate.
+        sx={canSubmit || isPending ? undefined : lookDisabledSx}
+        onClick={() => {
+          if (!canSubmit) return;
+          void onSave();
+        }}
       >
         {isPending ? "Saving…" : "Save"}
       </Button>
diff --git a/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-options.ts b/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-options.ts
index 745a01d3..dc694816 100644
--- a/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-options.ts
+++ b/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-options.ts
@@ -10,10 +10,44 @@ export type TechnicianOption = {
   vendor?: VendorDropdownItem;
 };
 
+export type CompanyOption = {
+  key: string;
+  label: string;
+  vendor?: VendorDropdownItem;
+};
+
+export function buildCompanyOptions(
+  vendors: VendorDropdownItem[],
+  currentCompany: string,
+): CompanyOption[] {
+  const companies = new Map<string, CompanyOption>();
+
+  for (const vendor of vendors) {
+    const companyName = vendor.companyName.trim();
+    if (companyName && !companies.has(companyName)) {
+      companies.set(companyName, {
+        key: companyName,
+        label: companyName,
+        vendor,
+      });
+    }
+  }
+
+  if (currentCompany && !companies.has(currentCompany)) {
+    companies.set(currentCompany, {
+      key: currentCompany,
+      label: currentCompany,
+    });
+  }
+
+  return Array.from(companies.values());
+}
+
 export function buildTechnicianOptions(
   vendors: VendorDropdownItem[],
+  selectedCompany: string,
   tech: string,
-  company: string,
+  currentCompany: string,
 ): TechnicianOption[] {
   const options = new Map<string, TechnicianOption>();
 
@@ -25,6 +59,9 @@ export function buildTechnicianOptions(
   };
 
   for (const vendor of vendors) {
+    if (vendor.companyName !== selectedCompany) {
+      continue;
+    }
     const contact = vendor.contactName.trim() || vendor.companyName.trim();
     add({
       key: String(vendor.id),
@@ -36,17 +73,16 @@ export function buildTechnicianOptions(
     });
   }
 
-  if (tech) {
+  if (tech && selectedCompany === currentCompany) {
     const vendor =
-      vendors.find((v) => v.contactName === tech && v.companyName === company) ??
-      vendors.find((v) => v.contactName === tech) ??
-      vendors.find((v) => v.companyName === company);
+      vendors.find((v) => v.contactName === tech && v.companyName === currentCompany) ??
+      vendors.find((v) => v.contactName === tech);
     const key = vendor ? String(vendor.id) : tech;
     add({
       key,
-      label: company && company !== tech ? `${tech} · ${company}` : tech,
+      label: tech,
       name: tech,
-      company: company || tech,
+      company: currentCompany,
       phone: "",
       vendor,
     });
diff --git a/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog.tsx b/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog.tsx
index d87afaa9..0f610afe 100644
--- a/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog.tsx
+++ b/src/app/(protected)/workorders/_components/list/table/cells/vendor-dialog.tsx
@@ -1,22 +1,11 @@
-import { useEffect, useMemo, useState, type MouseEvent } from "react";
+import type { MouseEvent } from "react";
 import { Dialog, DialogContent, DialogTitle } from "@mui/material";
 import { Text } from "@/components/ui/text";
 import { dialogBlurBackdropSlotProps } from "@/components/ui/dialog-blur-backdrop";
 import type { VendorDropdownItem } from "@/domain/work-orders/types/work-order";
-import type { VendorFormValues } from "@/domain/vendors/schemas/vendor-schema";
-import { useCreateVendor } from "@/domain/vendors/use-cases/use-create-vendor";
-import {
-  buildTechnicianOptions,
-  phoneForOption,
-} from "@/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-options";
 import { VendorDialogBody } from "@/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-body";
 import { VendorDialogFooter } from "@/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-footer";
-import {
-  mergeVendorDropdownItems,
-  resolveVendorCompanyAnchor,
-} from "@/app/(protected)/workorders/_components/list/table/cells/resolve-vendor-company-anchor";
-import { resolveTechnicianKey } from "@/app/(protected)/workorders/_components/list/table/cells/resolve-technician-key";
-import { useVendorDialogSave } from "@/app/(protected)/workorders/_components/list/table/cells/use-vendor-dialog-save";
+import { useVendorDialogForm } from "@/app/(protected)/workorders/_components/list/table/cells/use-vendor-dialog-form";
 import type { VendorPatch } from "@/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-types";
 
 export type { VendorPatch } from "@/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-types";
@@ -44,85 +33,15 @@ export function VendorDialog({
   viewOnly = false,
   onSave,
 }: VendorDialogProps) {
-  const createVendor = useCreateVendor();
-  const [selectedKey, setSelectedKey] = useState(() =>
-    resolveTechnicianKey(vendorId, tech, company, vendors),
-  );
-  const [t, setT] = useState(tech);
-  const [phone, setPhone] = useState(techPhone);
-  const [notes, setNotes] = useState("");
-  const [addedVendors, setAddedVendors] = useState<VendorDropdownItem[]>([]);
-  const [pendingCreates, setPendingCreates] = useState<Record<string, VendorFormValues>>({});
-  const [saveError, setSaveError] = useState<string | null>(null);
-
-  const allVendors = useMemo(
-    () => mergeVendorDropdownItems(vendors, addedVendors),
-    [vendors, addedVendors],
-  );
-
-  const technicianOptions = useMemo(
-    () => buildTechnicianOptions(allVendors, tech, company),
-    [allVendors, tech, company],
-  );
-
-  useEffect(() => {
-    if (open) {
-      const key = resolveTechnicianKey(vendorId, tech, company, vendors);
-      setSelectedKey(key);
-      setT(tech);
-      setPhone(techPhone || phoneForOption(tech, buildTechnicianOptions(vendors, tech, company)));
-      setNotes("");
-      setAddedVendors([]);
-      setPendingCreates({});
-      setSaveError(null);
-    }
-    // Intentionally omit technicianOptions: rebuilding options after Add must not clear staged drafts.
-  }, [open, tech, techPhone, vendors, company, vendorId]);
-
-  const selected = technicianOptions.find((option) => option.key === selectedKey);
-  const resolvedCompany = selectedKey ? (selected?.company ?? company) : company;
-  const selectedVendor =
-    selected?.vendor ?? allVendors.find((vendor) => String(vendor.id) === selectedKey);
-
-  const { companyName: anchorCompanyName, companyVendor } = resolveVendorCompanyAnchor({
-    company,
-    resolvedCompany,
-    selectedVendor,
-    vendors: allVendors,
-  });
-
-  const handlePick = (key: string) => {
-    const option = technicianOptions.find((o) => o.key === key);
-    setSelectedKey(key);
-    setT(option?.name ?? key);
-    setPhone(option?.phone || phoneForOption(option?.name ?? key, technicianOptions));
-  };
-
-  const handleTechnicianCreated = (
-    created: VendorDropdownItem,
-    createdPhone: string,
-    payload: VendorFormValues,
-  ) => {
-    setAddedVendors((current) => [...current, created]);
-    setPendingCreates((current) => ({ ...current, [String(created.id)]: payload }));
-    setSelectedKey(String(created.id));
-    setT(created.contactName);
-    setPhone(createdPhone);
-  };
-
-  const { handleSave } = useVendorDialogSave({
-    allVendors,
-    pendingCreates,
-    selectedKey,
-    selectedVendor,
-    resolvedCompany,
-    anchorCompanyName,
-    tech: selected?.name ?? t,
-    phone,
-    createVendor,
-    onSave,
+  const form = useVendorDialogForm({
+    open,
     onOpenChange,
-    setSaveError,
+    vendorId,
+    company,
+    tech,
+    techPhone,
+    vendors,
+    onSave,
   });
 
   return (
@@ -134,43 +53,47 @@ export function VendorDialog({
         ...dialogBlurBackdropSlotProps,
         paper: {
           className: "w-full",
-          style: { borderRadius: 12, maxWidth: 480 },
+          style: { borderRadius: 12, maxWidth: 560 },
           onClick: (e: MouseEvent<HTMLDivElement>) => e.stopPropagation(),
         },
       }}
     >
       <DialogContent className="p-6" onClick={(e) => e.stopPropagation()}>
         <DialogTitle className="p-0" style={{ fontSize: 16, color: "var(--color-text-primary)" }}>
-          Technician
+          Vendor
         </DialogTitle>
         <Text as="p" className="sr-only">
-          Search and select the technician
+          Search and select the vendor company
         </Text>
 
         <fieldset disabled={viewOnly} className="min-w-0 border-0 p-0">
           <VendorDialogBody
-            selectedKey={selectedKey}
-            technicianOptions={technicianOptions}
-            anchorCompanyName={anchorCompanyName}
-            companyVendorForAdd={viewOnly ? undefined : (companyVendor ?? undefined)}
-            tech={selected?.name ?? t}
-            phone={phone}
-            notes={notes}
-            resolvedCompany={resolvedCompany}
-            selectedVendor={selectedVendor}
-            saveError={saveError}
-            onPick={handlePick}
-            onPhoneChange={setPhone}
-            onNotesChange={setNotes}
-            onTechnicianCreated={handleTechnicianCreated}
+            selectedCompany={form.selectedCompany}
+            companyOptions={form.companyOptions}
+            selectedKey={form.selectedKey}
+            technicianOptions={form.technicianOptions}
+            anchorCompanyName={form.anchorCompanyName}
+            companyVendorForAdd={viewOnly ? undefined : (form.companyVendor ?? undefined)}
+            tech={form.selected?.name ?? form.t}
+            phone={form.phone}
+            notes={form.notes}
+            resolvedCompany={form.resolvedCompany}
+            selectedVendor={form.selectedVendor}
+            saveError={form.saveError}
+            onCompanyPick={form.handleCompanyPick}
+            onPick={form.handlePick}
+            onPhoneChange={form.setPhone}
+            onNotesChange={form.setNotes}
+            onTechnicianCreated={form.handleTechnicianCreated}
           />
         </fieldset>
 
         <VendorDialogFooter
           viewOnly={viewOnly}
-          isPending={createVendor.isPending}
+          isPending={form.isPending}
+          canSubmit={form.canSubmit}
           onCancel={() => onOpenChange(false)}
-          onSave={handleSave}
+          onSave={form.handleSave}
         />
       </DialogContent>
     </Dialog>
diff --git a/src/app/(protected)/workorders/_components/media/media-upload-modal.tsx b/src/app/(protected)/workorders/_components/media/media-upload-modal.tsx
index ba84fa1c..e3aa23ee 100644
--- a/src/app/(protected)/workorders/_components/media/media-upload-modal.tsx
+++ b/src/app/(protected)/workorders/_components/media/media-upload-modal.tsx
@@ -12,7 +12,6 @@ import type { WorkOrderTableRow } from "@/domain/work-orders/types/work-order-ta
 import { useWorkOrderBoardDetail } from "@/domain/work-orders/use-cases/use-work-order-detail";
 import {
   useDeleteWorkOrderMedia,
-  useUpdateWorkOrderMediaCategory,
   useUploadWorkOrderMedia,
 } from "@/domain/work-orders/use-cases/use-work-order-mutations";
 import { isWorkOrderDocumentsReadOnly } from "@/domain/work-orders/utils/work-order-media-limits";
@@ -35,14 +34,12 @@ function resolveWorkOrderVersion(
 export function MediaUploadModal({ row, open, onOpenChange }: MediaUploadModalProps) {
   const { data: detail, isLoading } = useWorkOrderBoardDetail(row.id, open);
   const uploadMutation = useUploadWorkOrderMedia(row.id);
-  const categorizeMutation = useUpdateWorkOrderMediaCategory(row.id);
   const deleteMutation = useDeleteWorkOrderMedia(row.id);
   const isReadOnly = isWorkOrderDocumentsReadOnly(detail?.info.status ?? row.status);
   const { uploads, startUploads, retryUpload, cancelUpload, removeLocal, isLocal } =
     useMediaUploadSession(detail, (input) => uploadMutation.mutateAsync(input));
 
-  const pending =
-    uploadMutation.isPending || deleteMutation.isPending || categorizeMutation.isPending;
+  const pending = uploadMutation.isPending || deleteMutation.isPending;
   const handleClose = guardDialogClose(pending, () => onOpenChange(false));
 
   const requireVersion = (): string | null => {
@@ -69,14 +66,18 @@ export function MediaUploadModal({ row, open, onOpenChange }: MediaUploadModalPr
     >
       <DialogContent className="p-6" onClick={(e) => e.stopPropagation()}>
         <div className="flex items-center gap-2">
-          <ImageIcon size={16} className="shrink-0" style={{ color: "var(--foreground)" }} />
-          <DialogTitle className="p-0" style={{ fontSize: 15, color: "var(--color-text-primary)" }}>
+          <ImageIcon size={18} className="shrink-0" style={{ color: "var(--foreground)" }} />
+          <DialogTitle
+            sx={{ p: 0, fontSize: 16, lineHeight: 1.25, color: "var(--color-text-primary)" }}
+          >
             Photos &amp; Videos
           </DialogTitle>
-          <span style={{ fontSize: 12, color: "var(--color-text-muted)" }}>#{row.woNumber}</span>
+          <span style={{ fontSize: 13, fontWeight: 600, color: "var(--color-text-muted)" }}>
+            #{row.woNumber}
+          </span>
         </div>
         <Text className="sr-only" variant="description">
-          Upload photos and videos for this work order, then assign Before, After, or Extra.
+          Upload photos and videos for this work order.
         </Text>
 
         <div className="mt-4">
@@ -101,11 +102,6 @@ export function MediaUploadModal({ row, open, onOpenChange }: MediaUploadModalPr
                 if (!workOrderVersion) return;
                 deleteMutation.mutate({ mediaId: id, workOrderVersion });
               }}
-              onCategorize={(id, category) => {
-                const workOrderVersion = requireVersion();
-                if (!workOrderVersion) return;
-                categorizeMutation.mutate({ mediaId: id, category, workOrderVersion });
-              }}
               onRetry={retryUpload}
               onCancel={cancelUpload}
               readOnly={isReadOnly}
diff --git a/src/app/(protected)/workorders/_components/media/media-uploader-dropzone.tsx b/src/app/(protected)/workorders/_components/media/media-uploader-dropzone.tsx
index e6b3aa19..439b4693 100644
--- a/src/app/(protected)/workorders/_components/media/media-uploader-dropzone.tsx
+++ b/src/app/(protected)/workorders/_components/media/media-uploader-dropzone.tsx
@@ -8,12 +8,14 @@ import {
 type MediaUploaderDropzoneProps = {
   inputRef: RefObject<HTMLInputElement | null>;
   pending: boolean;
+  categorizeAfterUpload?: boolean;
   onFilesSelected: (files: FileList | null) => void;
 };
 
 export function MediaUploaderDropzone({
   inputRef,
   pending,
+  categorizeAfterUpload = false,
   onFilesSelected,
 }: MediaUploaderDropzoneProps) {
   return (
@@ -39,8 +41,8 @@ export function MediaUploaderDropzone({
           {pending ? "Uploading…" : "Drag files here or click to browse"}
         </span>
         <span style={{ fontSize: 11, color: "var(--color-text-muted)" }}>
-          Accepted: JPG, PNG, MP4, MOV · Max {formatMediaSizeLimit()} per file · categorize after
-          upload
+          Accepted: JPG, PNG, MP4, MOV · Max {formatMediaSizeLimit()} per file
+          {categorizeAfterUpload ? " · categorize after upload" : ""}
         </span>
       </button>
       <input
diff --git a/src/app/(protected)/workorders/_components/media/media-uploader-grid-item-meta.tsx b/src/app/(protected)/workorders/_components/media/media-uploader-grid-item-meta.tsx
index 8b42c0f4..209e5a2e 100644
--- a/src/app/(protected)/workorders/_components/media/media-uploader-grid-item-meta.tsx
+++ b/src/app/(protected)/workorders/_components/media/media-uploader-grid-item-meta.tsx
@@ -17,12 +17,13 @@ export function MediaUploaderGridItemMeta({
   onCategorize,
 }: MediaUploaderGridItemMetaProps) {
   const failed = file.uploadStatus === "failed";
+  const managesPurpose = Boolean(onCategorize);
   const needsCategory =
     !readOnly &&
     !file.isLegacy &&
     file.uploadStatus !== "uploading" &&
     file.uploadStatus !== "failed" &&
-    Boolean(onCategorize);
+    managesPurpose;
 
   return (
     <div className="space-y-1 px-1 py-1">
@@ -34,10 +35,10 @@ export function MediaUploaderGridItemMeta({
           {file.errorMessage || "Upload failed"}
         </div>
       )}
-      {needsCategory ? (
+      {needsCategory && (
         <select
           aria-label={`Category for ${file.name}`}
-          value={file.purpose ?? ""}
+          value={file.purpose === "Extra" ? "" : (file.purpose ?? "")}
           disabled={pending}
           onChange={(event) => {
             const value = event.target.value as UploadableMediaCategory;
@@ -57,7 +58,8 @@ export function MediaUploaderGridItemMeta({
             </option>
           ))}
         </select>
-      ) : (
+      )}
+      {Boolean(!needsCategory && managesPurpose) && (
         <div style={{ fontSize: 10, color: "var(--color-text-muted)" }}>
           {file.purpose || (file.isLegacy ? "Legacy" : "")}
         </div>
diff --git a/src/app/(protected)/workorders/_components/media/media-uploader.tsx b/src/app/(protected)/workorders/_components/media/media-uploader.tsx
index 69f4c364..aed81332 100644
--- a/src/app/(protected)/workorders/_components/media/media-uploader.tsx
+++ b/src/app/(protected)/workorders/_components/media/media-uploader.tsx
@@ -91,7 +91,12 @@ export function MediaUploader({
   return (
     <div>
       {!readOnly && (
-        <MediaUploaderDropzone inputRef={inputRef} pending={pending} onFilesSelected={addFiles} />
+        <MediaUploaderDropzone
+          inputRef={inputRef}
+          pending={pending}
+          categorizeAfterUpload={Boolean(onCategorize)}
+          onFilesSelected={addFiles}
+        />
       )}
       <MediaUploaderGrid
         uploads={uploads}
diff --git a/src/domain/work-orders/api/work-order-board-documents-api.ts b/src/domain/work-orders/api/work-order-board-documents-api.ts
index 97ca0d2b..3ee11286 100644
--- a/src/domain/work-orders/api/work-order-board-documents-api.ts
+++ b/src/domain/work-orders/api/work-order-board-documents-api.ts
@@ -2,6 +2,7 @@ import { API_PATHS } from "@/api/api-paths";
 import { ApiError, mapHttpStatusToMessage } from "@/api/api-error";
 import { api, apiGet, apiPost } from "@/api/api";
 import { handleApiResponse } from "@/api/handle-api-response";
+import { uploadFormWithProgress } from "@/api/upload-form-with-progress";
 import {
   BoardPatchConflictError,
   BoardPatchValidationError,
@@ -33,10 +34,10 @@ async function readResponseJson(response: Response): Promise<unknown> {
   }
 }
 
-function throwDocumentHttpError(response: Response, data: unknown): never {
+function throwDocumentHttpError(status: number, data: unknown): never {
   const record = typeof data === "object" && data !== null ? (data as Record<string, unknown>) : {};
 
-  if (response.status === 409) {
+  if (status === 409) {
     throw new BoardPatchConflictError(
       typeof record.message === "string"
         ? record.message
@@ -45,14 +46,14 @@ function throwDocumentHttpError(response: Response, data: unknown): never {
     );
   }
 
-  if (response.status === 422) {
+  if (status === 422) {
     throw new BoardPatchValidationError(
       typeof record.code === "string" ? record.code : "ValidationError",
       typeof record.message === "string" ? record.message : mapHttpStatusToMessage(422, data),
     );
   }
 
-  throw new ApiError(mapHttpStatusToMessage(response.status, data), response.status);
+  throw new ApiError(mapHttpStatusToMessage(status, data), status);
 }
 
 export const workOrderBoardDocumentsApi = {
@@ -94,7 +95,7 @@ export const workOrderBoardDocumentsApi = {
       return mapBoardDetailComment(handleApiResponse(data) ?? data);
     }
 
-    throwDocumentHttpError(response, data);
+    throwDocumentHttpError(response.status, data);
   },
 
   /** @deprecated Prefer createComment — modern board endpoint. */
@@ -119,21 +120,15 @@ export const workOrderBoardDocumentsApi = {
     options?: { signal?: AbortSignal; onProgress?: (percent: number) => void },
   ): Promise<WorkOrderBoardMediaItem> => {
     const formData = buildMediaFormData(file, category);
-    const response = await api.post(API_PATHS.workOrder.media(workOrderId), {
-      body: formData,
-      throwHttpErrors: false,
-      signal: options?.signal,
-      onUploadProgress: options?.onProgress
-        ? (progress) => {
-            options.onProgress?.(Math.round(progress.percent * 100));
-          }
-        : undefined,
-    });
-    const data = await readResponseJson(response);
-    if (response.ok) {
+    const { ok, status, data } = await uploadFormWithProgress(
+      API_PATHS.workOrder.media(workOrderId),
+      formData,
+      { signal: options?.signal, onProgress: options?.onProgress },
+    );
+    if (ok) {
       return mapBoardDetailMediaItem(handleApiResponse(data) ?? data);
     }
-    throwDocumentHttpError(response, data);
+    throwDocumentHttpError(status, data);
   },
 
   updateMediaCategory: async (
@@ -160,7 +155,7 @@ export const workOrderBoardDocumentsApi = {
     if (response.ok) {
       return mapBoardDetailMediaItem(handleApiResponse(data) ?? data);
     }
-    throwDocumentHttpError(response, data);
+    throwDocumentHttpError(response.status, data);
   },
 
   deleteMedia: async (
@@ -196,7 +191,7 @@ export const workOrderBoardDocumentsApi = {
     if (response.ok) {
       return;
     }
-    throwDocumentHttpError(response, data);
+    throwDocumentHttpError(response.status, data);
   },
 
   uploadCompletionDoc: async (
@@ -224,6 +219,6 @@ export const workOrderBoardDocumentsApi = {
     if (response.ok) {
       return mapCompletion(handleApiResponse(data) ?? data);
     }
-    throwDocumentHttpError(response, data);
+    throwDocumentHttpError(response.status, data);
   },
 };
diff --git a/src/domain/work-orders/errors/board-patch-errors.ts b/src/domain/work-orders/errors/board-patch-errors.ts
index 1cce7140..d4e9fdbd 100644
--- a/src/domain/work-orders/errors/board-patch-errors.ts
+++ b/src/domain/work-orders/errors/board-patch-errors.ts
@@ -21,3 +21,11 @@ export class BoardPatchValidationError extends Error {
     this.code = code;
   }
 }
+
+/** why: backend field names must never be exposed through user-facing board toasts. */
+export function boardPatchValidationMessage(error: BoardPatchValidationError): string {
+  if (error.code === "DispatchRequired") {
+    return "Select a vendor company before saving.";
+  }
+  return error.message;
+}
diff --git a/src/domain/work-orders/mappers/work-order-board-detail-mapper.ts b/src/domain/work-orders/mappers/work-order-board-detail-mapper.ts
index 950f8fd2..e2ae7411 100644
--- a/src/domain/work-orders/mappers/work-order-board-detail-mapper.ts
+++ b/src/domain/work-orders/mappers/work-order-board-detail-mapper.ts
@@ -12,6 +12,7 @@ import type {
   WorkOrderComment,
 } from "@/domain/work-orders/types/work-order-detail";
 import { mapWorkOrderTableRow } from "@/domain/work-orders/mappers/work-order-mapper";
+import { toDisplayFileName } from "@/domain/work-orders/utils/display-file-name";
 import type {
   FileCategory,
   MediaCategory,
@@ -220,7 +221,7 @@ export function mapBoardDetailMediaItem(raw: unknown): WorkOrderBoardMediaItem {
     id: String(id ?? (readString(item, "id") || cryptoRandomId())),
     category: mapMediaCategory(item.category ?? item.Category),
     url: readString(item, "url", "Url"),
-    fileName: readString(item, "fileName", "FileName") || "file",
+    fileName: toDisplayFileName(readString(item, "fileName", "FileName") || "file"),
     uploadedAt: readString(item, "uploadedAt", "UploadedAt"),
     isLegacy: isLegacyFlag || (id != null && id <= 0),
   };
diff --git a/src/domain/work-orders/use-cases/use-work-order-table-mutations.ts b/src/domain/work-orders/use-cases/use-work-order-table-mutations.ts
index e2ffbd91..6922c367 100644
--- a/src/domain/work-orders/use-cases/use-work-order-table-mutations.ts
+++ b/src/domain/work-orders/use-cases/use-work-order-table-mutations.ts
@@ -3,6 +3,7 @@ import { useMutation, useQueryClient } from "@tanstack/react-query";
 import { toast } from "react-toastify";
 import { workOrdersApi } from "@/domain/work-orders/api/work-orders-api";
 import {
+  boardPatchValidationMessage,
   BoardPatchConflictError,
   BoardPatchValidationError,
 } from "@/domain/work-orders/errors/board-patch-errors";
@@ -161,7 +162,7 @@ export function useWorkOrderTableMutations(
         toast.error(error.message || "Conflict — refreshed with latest data");
       } else if (error instanceof BoardPatchValidationError) {
         clearPatch(id);
-        toast.error(error.message);
+        toast.error(boardPatchValidationMessage(error));
       } else {
         clearPatch(id);
         toast.error(error.message || "Failed to update work order");
diff --git a/src/domain/work-orders/utils/display-file-name.ts b/src/domain/work-orders/utils/display-file-name.ts
new file mode 100644
index 00000000..65659c24
--- /dev/null
+++ b/src/domain/work-orders/utils/display-file-name.ts
@@ -0,0 +1,10 @@
+/**
+ * why: uploads are stored as `{guid}_{original name}`, so the raw storage name shown in media
+ * tiles reads as an id. The original name (and its extension) survive after the prefix.
+ */
+const STORED_NAME_PREFIX = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}_/i;
+
+export function toDisplayFileName(fileName: string): string {
+  const withoutPrefix = fileName.replace(STORED_NAME_PREFIX, "").trim();
+  return withoutPrefix || fileName;
+}
diff --git a/src/domain/work-orders/utils/partition-slide-over-media.ts b/src/domain/work-orders/utils/partition-slide-over-media.ts
new file mode 100644
index 00000000..5de1e4ad
--- /dev/null
+++ b/src/domain/work-orders/utils/partition-slide-over-media.ts
@@ -0,0 +1,44 @@
+import type { MediaFile } from "@/domain/work-orders/types/work-order-media";
+
+const COMPLETION_PURPOSES = new Set(["Before", "After", "Completion"]);
+
+export type MediaSurfaceOwnership = {
+  completionOwnedIds: ReadonlySet<string>;
+  extraOwnedIds: ReadonlySet<string>;
+};
+
+const EMPTY_OWNERSHIP: MediaSurfaceOwnership = {
+  completionOwnedIds: new Set(),
+  extraOwnedIds: new Set(),
+};
+
+function isPhotoOrVideo(item: MediaFile): boolean {
+  return item.fileType === "image" || item.fileType === "video";
+}
+
+function isInFlight(item: MediaFile): boolean {
+  return item.uploadStatus === "uploading" || item.uploadStatus === "failed";
+}
+
+/** Extra photo/video from Completion Doc POST (no category) until Extra is chosen. */
+export function isCompletionSurfaceMedia(
+  item: MediaFile,
+  ownership: MediaSurfaceOwnership = EMPTY_OWNERSHIP,
+): boolean {
+  if (isInFlight(item)) return true;
+  if (COMPLETION_PURPOSES.has(item.purpose ?? "")) return true;
+  if (ownership.completionOwnedIds.has(item.id)) return true;
+  if (ownership.extraOwnedIds.has(item.id)) return false;
+  return item.purpose === "Extra" && isPhotoOrVideo(item);
+}
+
+export function isExtrasSurfaceMedia(
+  item: MediaFile,
+  ownership: MediaSurfaceOwnership = EMPTY_OWNERSHIP,
+): boolean {
+  if (item.purpose === "Aveta") return true;
+  if (item.purpose !== "Extra") return false;
+  if (ownership.completionOwnedIds.has(item.id)) return false;
+  if (ownership.extraOwnedIds.has(item.id)) return true;
+  return !isPhotoOrVideo(item);
+}
diff --git a/src/domain/work-orders/utils/work-order-media-limits.ts b/src/domain/work-orders/utils/work-order-media-limits.ts
index 58cc358a..d93fb7cb 100644
--- a/src/domain/work-orders/utils/work-order-media-limits.ts
+++ b/src/domain/work-orders/utils/work-order-media-limits.ts
@@ -1,7 +1,13 @@
 /** Backend RequestSizeLimit for media and completion-doc uploads. */
 export const MAX_WORK_ORDER_MEDIA_BYTES = 30 * 1024 * 1024;
 
-const ALLOWED_MIME_TYPES = new Set(["image/jpeg", "image/png", "video/mp4", "video/quicktime"]);
+const ALLOWED_MIME_TYPES = new Set([
+  "image/jpeg",
+  "image/jpg",
+  "image/png",
+  "video/mp4",
+  "video/quicktime",
+]);
 
 const ALLOWED_EXTENSIONS = new Set([".jpg", ".jpeg", ".png", ".mp4", ".mov"]);
 
@@ -22,7 +28,7 @@ export function isWorkOrderMediaTypeAllowed(file: File): boolean {
 }
 
 export function workOrderMediaAcceptAttribute(): string {
-  return "image/jpeg,image/png,video/mp4,video/quicktime,.jpg,.jpeg,.png,.mp4,.mov";
+  return "image/jpeg,image/jpg,image/png,video/mp4,video/quicktime,.jpg,.jpeg,.png,.mp4,.mov";
 }
 
 export function formatMediaSizeLimit(maxBytes = MAX_WORK_ORDER_MEDIA_BYTES): string {
diff --git a/src/lib/auth/expire-session.ts b/src/lib/auth/expire-session.ts
new file mode 100644
index 00000000..0c7c8900
--- /dev/null
+++ b/src/lib/auth/expire-session.ts
@@ -0,0 +1,12 @@
+import { clearAuth } from "@/lib/auth/auth-storage";
+import queryClient from "@/lib/query/query-client";
+import { stopQueryBroadcast } from "@/lib/query/setup-query-broadcast";
+
+export function expireSessionAndRedirectToLogin(): void {
+  clearAuth();
+  stopQueryBroadcast(queryClient);
+
+  if (typeof window !== "undefined" && window.location.pathname !== "/login") {
+    window.location.replace("/login");
+  }
+}
diff --git a/src/test/api/upload-form-with-progress.test.ts b/src/test/api/upload-form-with-progress.test.ts
new file mode 100644
index 00000000..18a4f4dc
--- /dev/null
+++ b/src/test/api/upload-form-with-progress.test.ts
@@ -0,0 +1,184 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+
+const expireSession = vi.fn();
+
+vi.mock("@/lib/auth/expire-session", () => ({
+  expireSessionAndRedirectToLogin: () => expireSession(),
+}));
+
+import { uploadFormWithProgress } from "@/api/upload-form-with-progress";
+
+type Listener = (event?: unknown) => void;
+
+class ListenerBag {
+  private readonly listeners = new Map<string, Listener[]>();
+
+  addEventListener(type: string, listener: Listener): void {
+    this.listeners.set(type, [...(this.listeners.get(type) ?? []), listener]);
+  }
+
+  removeEventListener(type: string, listener: Listener): void {
+    this.listeners.set(
+      type,
+      (this.listeners.get(type) ?? []).filter((entry) => entry !== listener),
+    );
+  }
+
+  emit(type: string, event?: unknown): void {
+    for (const listener of [...(this.listeners.get(type) ?? [])]) {
+      listener(event);
+    }
+  }
+}
+
+class FakeXhr extends ListenerBag {
+  static last: FakeXhr | undefined;
+
+  readonly upload = new ListenerBag();
+  readonly headers: Record<string, string> = {};
+  status = 0;
+  responseText = "";
+  method = "";
+  url = "";
+  body: FormData | undefined;
+  abortCount = 0;
+
+  constructor() {
+    super();
+    FakeXhr.last = this;
+  }
+
+  open(method: string, url: string): void {
+    this.method = method;
+    this.url = url;
+  }
+
+  setRequestHeader(name: string, value: string): void {
+    this.headers[name] = value;
+  }
+
+  send(body: FormData): void {
+    this.body = body;
+  }
+
+  abort(): void {
+    this.abortCount += 1;
+    this.emit("abort");
+  }
+
+  respond(status: number, responseText = ""): void {
+    this.status = status;
+    this.responseText = responseText;
+    this.emit("load");
+  }
+}
+
+function currentXhr(): FakeXhr {
+  const instance = FakeXhr.last;
+  if (!instance) throw new Error("No XMLHttpRequest was created");
+  return instance;
+}
+
+function formWithFile(): FormData {
+  const body = new FormData();
+  body.append("file", new File(["bytes"], "after.jpg", { type: "image/jpeg" }));
+  return body;
+}
+
+describe("uploadFormWithProgress", () => {
+  const originalXhr = globalThis.XMLHttpRequest;
+
+  beforeEach(() => {
+    expireSession.mockReset();
+    FakeXhr.last = undefined;
+    globalThis.XMLHttpRequest = FakeXhr as unknown as typeof XMLHttpRequest;
+    localStorage.setItem("auth", JSON.stringify({ token: "abc123" }));
+  });
+
+  afterEach(() => {
+    globalThis.XMLHttpRequest = originalXhr;
+    localStorage.clear();
+  });
+
+  it("POSTs the FormData with the stored bearer token and no streamed body", async () => {
+    const pending = uploadFormWithProgress("workorders/10/media", formWithFile());
+    const request = currentXhr();
+
+    expect(request.method).toBe("POST");
+    expect(request.url.endsWith("/api/workorders/10/media")).toBe(true);
+    expect(request.headers.Authorization).toBe("Bearer abc123");
+    expect(request.body).toBeInstanceOf(FormData);
+
+    request.respond(201, JSON.stringify({ data: { id: 12 } }));
+
+    await expect(pending).resolves.toEqual({
+      ok: true,
+      status: 201,
+      data: { data: { id: 12 } },
+    });
+  });
+
+  it("reports upload progress as whole percentages", async () => {
+    const onProgress = vi.fn();
+    const pending = uploadFormWithProgress("workorders/10/media", formWithFile(), { onProgress });
+    const request = currentXhr();
+
+    request.upload.emit("progress", { lengthComputable: true, loaded: 25, total: 200 });
+    request.upload.emit("progress", { lengthComputable: false, loaded: 30, total: 200 });
+    request.respond(200, "{}");
+    await pending;
+
+    expect(onProgress.mock.calls).toEqual([[13]]);
+  });
+
+  it("resolves non-2xx responses so callers can map API errors", async () => {
+    const pending = uploadFormWithProgress("workorders/10/media", formWithFile());
+    currentXhr().respond(
+      422,
+      JSON.stringify({ code: "ReadOnly", message: "Work order is closed." }),
+    );
+
+    await expect(pending).resolves.toEqual({
+      ok: false,
+      status: 422,
+      data: { code: "ReadOnly", message: "Work order is closed." },
+    });
+    expect(expireSession).not.toHaveBeenCalled();
+  });
+
+  it("expires the session on 401", async () => {
+    const pending = uploadFormWithProgress("workorders/10/media", formWithFile());
+    currentXhr().respond(401);
+
+    await expect(pending).resolves.toMatchObject({ ok: false, status: 401 });
+    expect(expireSession).toHaveBeenCalledTimes(1);
+  });
+
+  it("rejects transport failures with an actionable message", async () => {
+    const pending = uploadFormWithProgress("workorders/10/media", formWithFile());
+    currentXhr().emit("error");
+
+    await expect(pending).rejects.toThrow(/Upload failed/);
+  });
+
+  it("aborts the request when the caller signal aborts", async () => {
+    const controller = new AbortController();
+    const pending = uploadFormWithProgress("workorders/10/media", formWithFile(), {
+      signal: controller.signal,
+    });
+
+    controller.abort();
+
+    await expect(pending).rejects.toMatchObject({ name: "AbortError" });
+    expect(currentXhr().abortCount).toBe(1);
+  });
+
+  it("rejects immediately when the signal is already aborted", async () => {
+    await expect(
+      uploadFormWithProgress("workorders/10/media", formWithFile(), {
+        signal: AbortSignal.abort(),
+      }),
+    ).rejects.toMatchObject({ name: "AbortError" });
+    expect(FakeXhr.last).toBeUndefined();
+  });
+});
diff --git a/src/test/app/(protected)/uplifts/reject-revoke-dialogs.test.tsx b/src/test/app/(protected)/uplifts/reject-revoke-dialogs.test.tsx
index 8b17deb5..da3fbee5 100644
--- a/src/test/app/(protected)/uplifts/reject-revoke-dialogs.test.tsx
+++ b/src/test/app/(protected)/uplifts/reject-revoke-dialogs.test.tsx
@@ -61,7 +61,12 @@ describe("DialogCancelButton VendorDialog tokens", () => {
   it("matches VendorDialogFooter Cancel classes (ghost + 12px compact padding)", () => {
     renderWithProviders(
       <>
-        <VendorDialogFooter isPending={false} onCancel={() => undefined} onSave={() => undefined} />
+        <VendorDialogFooter
+          isPending={false}
+          canSubmit={false}
+          onCancel={() => undefined}
+          onSave={() => undefined}
+        />
         <DialogCancelButton />
       </>,
     );
diff --git a/src/test/app/(protected)/workorders/media-upload-modal-api.test.tsx b/src/test/app/(protected)/workorders/media-upload-modal-api.test.tsx
index fd628353..b1fb4451 100644
--- a/src/test/app/(protected)/workorders/media-upload-modal-api.test.tsx
+++ b/src/test/app/(protected)/workorders/media-upload-modal-api.test.tsx
@@ -116,24 +116,42 @@ describe("MediaUploadModal API wiring", () => {
       expect(screen.getByText("before.jpg")).toBeInTheDocument();
     });
     expect(screen.getByText("Photos & Videos")).toBeInTheDocument();
-    expect(screen.getByText(/categorize after upload/i)).toBeInTheDocument();
-    expect(screen.getByLabelText(/category for before\.jpg/i)).toBeInTheDocument();
   });
 
-  it("categorizes with workOrderVersion from detail.info.rowVersion", async () => {
+  it("offers no purpose picker — the table modal only uploads and removes", async () => {
     renderModal();
 
     await waitFor(() => {
-      expect(screen.getByLabelText(/category for before\.jpg/i)).toBeInTheDocument();
+      expect(screen.getByText("before.jpg")).toBeInTheDocument();
     });
 
-    fireEvent.change(screen.getByLabelText(/category for before\.jpg/i), {
-      target: { value: "After" },
+    expect(screen.queryByLabelText(/category for before\.jpg/i)).not.toBeInTheDocument();
+    expect(screen.queryByText(/categorize after upload/i)).not.toBeInTheDocument();
+    expect(categorizeMutate).not.toHaveBeenCalled();
+  });
+
+  it("shows only the file name under each tile — no purpose label", async () => {
+    renderModal();
+
+    await waitFor(() => {
+      expect(screen.getByText("before.jpg")).toBeInTheDocument();
     });
 
-    expect(categorizeMutate).toHaveBeenCalledWith({
+    expect(screen.queryByText("Before")).not.toBeInTheDocument();
+    expect(screen.queryByText("Extra")).not.toBeInTheDocument();
+  });
+
+  it("removes media with workOrderVersion from detail.info.rowVersion", async () => {
+    renderModal();
+
+    await waitFor(() => {
+      expect(screen.getByText("before.jpg")).toBeInTheDocument();
+    });
+
+    fireEvent.click(screen.getByRole("button", { name: /^remove$/i }));
+
+    expect(deleteMutate).toHaveBeenCalledWith({
       mediaId: "11",
-      category: "After",
       workOrderVersion: "DETAIL-VER==",
     });
   });
diff --git a/src/test/app/(protected)/workorders/media-uploader-grid-item-meta.test.tsx b/src/test/app/(protected)/workorders/media-uploader-grid-item-meta.test.tsx
new file mode 100644
index 00000000..ec4b30d8
--- /dev/null
+++ b/src/test/app/(protected)/workorders/media-uploader-grid-item-meta.test.tsx
@@ -0,0 +1,35 @@
+import { fireEvent, render, screen } from "@testing-library/react";
+import { describe, expect, it, vi } from "vitest";
+import { MediaUploaderGridItemMeta } from "@/app/(protected)/workorders/_components/media/media-uploader-grid-item-meta";
+import type { MediaFile } from "@/domain/work-orders/types/work-order-media";
+
+const extraPhoto: MediaFile = {
+  id: "10",
+  name: "site.jpg",
+  fileType: "image",
+  url: "https://cdn.example.com/site.jpg",
+  category: "Photo",
+  purpose: "Extra",
+  isLegacy: false,
+};
+
+describe("MediaUploaderGridItemMeta", () => {
+  it("allows an Extra photo to be explicitly assigned to Extra Docs", () => {
+    const onCategorize = vi.fn();
+    render(
+      <MediaUploaderGridItemMeta
+        file={extraPhoto}
+        readOnly={false}
+        pending={false}
+        onCategorize={onCategorize}
+      />,
+    );
+
+    const category = screen.getByLabelText("Category for site.jpg");
+    expect(category).toHaveValue("");
+
+    fireEvent.change(category, { target: { value: "Extra" } });
+
+    expect(onCategorize).toHaveBeenCalledWith("10", "Extra");
+  });
+});
diff --git a/src/test/app/(protected)/workorders/use-slide-over-media-state.test.tsx b/src/test/app/(protected)/workorders/use-slide-over-media-state.test.tsx
index d3504fbc..87a74de5 100644
--- a/src/test/app/(protected)/workorders/use-slide-over-media-state.test.tsx
+++ b/src/test/app/(protected)/workorders/use-slide-over-media-state.test.tsx
@@ -1,5 +1,5 @@
-import { renderHook } from "@testing-library/react";
-import { describe, expect, it, vi } from "vitest";
+import { act, renderHook } from "@testing-library/react";
+import { beforeEach, describe, expect, it, vi } from "vitest";
 import { useSlideOverMediaState } from "@/app/(protected)/workorders/_components/detail/use-slide-over-media-state";
 import type { WorkOrderBoardDetail } from "@/domain/work-orders/types/work-order-board-detail";
 import type { WorkOrderTableRow } from "@/domain/work-orders/types/work-order-table-row";
@@ -85,6 +85,10 @@ function idleMutation() {
 }
 
 describe("useSlideOverMediaState completion filter", () => {
+  beforeEach(() => {
+    sessionStorage.clear();
+  });
+
   it("keeps Before/After/Completion after refetch mapped purpose (not file category)", () => {
     const detail = detailWithMedia([
       {
@@ -119,6 +123,14 @@ describe("useSlideOverMediaState completion filter", () => {
         uploadedAt: "2026-07-15T18:00:00.0000000Z",
         isLegacy: false,
       },
+      {
+        id: "10",
+        category: "Extra",
+        url: "https://cdn.example.com/site.jpg",
+        fileName: "site.jpg",
+        uploadedAt: "2026-07-15T18:00:00.0000000Z",
+        isLegacy: false,
+      },
     ]);
 
     const { result } = renderHook(() =>
@@ -134,7 +146,9 @@ describe("useSlideOverMediaState completion filter", () => {
       "Before",
       "After",
       "Completion",
+      "Extra",
     ]);
+    expect(result.current.completionMedia.map((item) => item.id)).toContain("10");
     expect(
       result.current.completionMedia.every((item) =>
         ["Photo", "Video", "Report", "Other"].includes(item.category),
@@ -142,6 +156,32 @@ describe("useSlideOverMediaState completion filter", () => {
     ).toBe(true);
     expect(result.current.extrasUploads).toHaveLength(1);
     expect(result.current.extrasUploads[0]?.purpose).toBe("Extra");
+    expect(result.current.extrasUploads[0]?.id).toBe("4");
+  });
+
+  it("keeps Extra photos on Completion Doc until Extra is assigned", () => {
+    const detail = detailWithMedia([
+      {
+        id: "10",
+        category: "Extra",
+        url: "https://cdn.example.com/site.jpg",
+        fileName: "site.jpg",
+        uploadedAt: "2026-07-15T18:00:00.0000000Z",
+        isLegacy: false,
+      },
+    ]);
+
+    const { result } = renderHook(() =>
+      useSlideOverMediaState({
+        detailForRow: detail,
+        uploadMediaMutation: idleMutation(),
+        deleteMediaMutation: idleMutation(),
+        categorizeMediaMutation: idleMutation(),
+      }),
+    );
+
+    expect(result.current.completionMedia.map((item) => item.id)).toEqual(["10"]);
+    expect(result.current.extrasUploads).toHaveLength(0);
   });
 
   it("includes Aveta-categorized extra documents in extrasUploads", () => {
@@ -177,4 +217,65 @@ describe("useSlideOverMediaState completion filter", () => {
     expect(result.current.extrasUploads.map((item) => item.purpose)).toEqual(["Extra", "Aveta"]);
     expect(result.current.extrasUploads[1]?.category).toBe("Aveta");
   });
+
+  it("keeps an Extra photo in Extra Docs after assigning Extra and remounting", () => {
+    const detail = detailWithMedia([
+      {
+        id: "10",
+        category: "Extra",
+        url: "https://cdn.example.com/site.jpg",
+        fileName: "site.jpg",
+        uploadedAt: "2026-07-15T18:00:00.0000000Z",
+        isLegacy: false,
+      },
+    ]);
+    const categorizeMutate = vi.fn((_input: unknown, options?: { onSuccess?: () => void }) =>
+      options?.onSuccess?.(),
+    );
+    const categorize = {
+      mutate: categorizeMutate,
+      mutateAsync: vi.fn().mockResolvedValue({}),
+      isPending: false,
+    } as never;
+
+    const { result, unmount } = renderHook(() =>
+      useSlideOverMediaState({
+        detailForRow: detail,
+        uploadMediaMutation: idleMutation(),
+        deleteMediaMutation: idleMutation(),
+        categorizeMediaMutation: categorize,
+      }),
+    );
+
+    expect(result.current.completionMedia).toHaveLength(1);
+    expect(result.current.extrasUploads).toHaveLength(0);
+
+    act(() => {
+      result.current.categorizeMedia("10", "Extra");
+    });
+
+    expect(result.current.completionMedia).toHaveLength(0);
+    expect(result.current.extrasUploads.map((item) => item.id)).toEqual(["10"]);
+    expect(categorizeMutate).toHaveBeenCalledWith(
+      {
+        mediaId: "10",
+        category: "Extra",
+        workOrderVersion: "1",
+      },
+      expect.objectContaining({ onSuccess: expect.any(Function) }),
+    );
+
+    unmount();
+    const remounted = renderHook(() =>
+      useSlideOverMediaState({
+        detailForRow: detail,
+        uploadMediaMutation: idleMutation(),
+        deleteMediaMutation: idleMutation(),
+        categorizeMediaMutation: idleMutation(),
+      }),
+    );
+
+    expect(remounted.result.current.completionMedia).toHaveLength(0);
+    expect(remounted.result.current.extrasUploads.map((item) => item.id)).toEqual(["10"]);
+  });
 });
diff --git a/src/test/app/(protected)/workorders/vendor-dialog-can-submit.test.ts b/src/test/app/(protected)/workorders/vendor-dialog-can-submit.test.ts
new file mode 100644
index 00000000..a2f7670a
--- /dev/null
+++ b/src/test/app/(protected)/workorders/vendor-dialog-can-submit.test.ts
@@ -0,0 +1,95 @@
+import { describe, expect, it } from "vitest";
+import {
+  computeVendorDialogCanSubmit,
+  type VendorDialogSubmitSnapshot,
+} from "@/app/(protected)/workorders/_components/list/table/cells/vendor-dialog-can-submit";
+
+const empty: VendorDialogSubmitSnapshot = {
+  company: "",
+  selectedKey: "",
+  phone: "",
+  notes: "",
+  pendingCreateCount: 0,
+};
+
+const assigned: VendorDialogSubmitSnapshot = {
+  company: "Gateway Plumbing",
+  selectedKey: "10",
+  phone: "(314) 555-0100",
+  notes: "",
+  pendingCreateCount: 0,
+};
+
+describe("computeVendorDialogCanSubmit", () => {
+  it("rejects an empty untouched assignment", () => {
+    expect(
+      computeVendorDialogCanSubmit({
+        current: empty,
+        baseline: empty,
+      }),
+    ).toBe(false);
+  });
+
+  it("rejects an existing assignment with no field changes", () => {
+    expect(
+      computeVendorDialogCanSubmit({
+        current: assigned,
+        baseline: assigned,
+      }),
+    ).toBe(false);
+  });
+
+  it("allows save after the technician key changes", () => {
+    expect(
+      computeVendorDialogCanSubmit({
+        current: { ...assigned, selectedKey: "11" },
+        baseline: assigned,
+      }),
+    ).toBe(true);
+  });
+
+  it("allows save when a new technician is staged", () => {
+    expect(
+      computeVendorDialogCanSubmit({
+        current: { ...assigned, selectedKey: "draft-1", pendingCreateCount: 1 },
+        baseline: assigned,
+      }),
+    ).toBe(true);
+  });
+
+  it("rejects notes-only changes because notes are not persisted", () => {
+    expect(
+      computeVendorDialogCanSubmit({
+        current: { ...assigned, notes: "Call before arrival" },
+        baseline: assigned,
+      }),
+    ).toBe(false);
+  });
+
+  it("does not allow notes-only save without a company or technician", () => {
+    expect(
+      computeVendorDialogCanSubmit({
+        current: { ...empty, notes: "Call before arrival" },
+        baseline: empty,
+      }),
+    ).toBe(false);
+  });
+
+  it("allows a company-only assignment", () => {
+    expect(
+      computeVendorDialogCanSubmit({
+        current: { ...empty, company: "Gateway Plumbing" },
+        baseline: empty,
+      }),
+    ).toBe(true);
+  });
+
+  it("rejects a technician without a company", () => {
+    expect(
+      computeVendorDialogCanSubmit({
+        current: { ...empty, selectedKey: "10" },
+        baseline: empty,
+      }),
+    ).toBe(false);
+  });
+});
diff --git a/src/test/app/(protected)/workorders/vendor-dialog-save-gate.test.tsx b/src/test/app/(protected)/workorders/vendor-dialog-save-gate.test.tsx
new file mode 100644
index 00000000..59f7e004
--- /dev/null
+++ b/src/test/app/(protected)/workorders/vendor-dialog-save-gate.test.tsx
@@ -0,0 +1,159 @@
+import { fireEvent, screen, waitFor } from "@testing-library/react";
+import { describe, expect, it, vi } from "vitest";
+import { VendorDialog } from "@/app/(protected)/workorders/_components/list/table/cells/vendor-dialog";
+import type { VendorDropdownItem } from "@/domain/work-orders/types/work-order";
+import { renderWithProviders } from "@/test/test-utils";
+
+vi.mock("@/domain/vendors/use-cases/use-create-vendor", () => ({
+  useCreateVendor: () => ({
+    mutateAsync: vi.fn(),
+    isPending: false,
+  }),
+}));
+
+const jordan: VendorDropdownItem = {
+  id: 10,
+  companyName: "Gateway Plumbing",
+  contactName: "Jordan Lee",
+  tradeSpecialties: "Plumbing",
+  address: "1 Main St",
+  distanceMiles: 4.2,
+  email: "dispatch@gateway.test",
+};
+
+const casey: VendorDropdownItem = {
+  ...jordan,
+  id: 11,
+  contactName: "Casey New",
+};
+
+const avery: VendorDropdownItem = {
+  ...jordan,
+  id: 12,
+  companyName: "Coastal HVAC",
+  contactName: "Avery Chen",
+  tradeSpecialties: "HVAC",
+};
+
+function renderAssigned(onSave = vi.fn()) {
+  renderWithProviders(
+    <VendorDialog
+      open
+      onOpenChange={vi.fn()}
+      vendorId={10}
+      company="Gateway Plumbing"
+      tech="Jordan Lee"
+      techPhone="(314) 555-0100"
+      vendors={[jordan, casey]}
+      onSave={onSave}
+    />,
+  );
+  return onSave;
+}
+
+describe("VendorDialog save gate", () => {
+  it("does not persist when the empty modal is saved unchanged", () => {
+    const onSave = vi.fn();
+    renderWithProviders(
+      <VendorDialog
+        open
+        onOpenChange={vi.fn()}
+        vendorId=""
+        company=""
+        tech=""
+        vendors={[]}
+        onSave={onSave}
+      />,
+    );
+
+    expect(screen.getByRole("button", { name: /pick a company first/i })).toBeDisabled();
+    const save = screen.getByRole("button", { name: /^save$/i });
+    expect(save).not.toBeDisabled();
+    expect(save).toHaveAttribute("aria-disabled", "true");
+    expect(save).toHaveStyle({ opacity: "0.5", cursor: "not-allowed" });
+    fireEvent.click(save);
+    expect(onSave).not.toHaveBeenCalled();
+  });
+
+  it("does not persist when an existing assignment is saved unchanged", () => {
+    const onSave = renderAssigned();
+    fireEvent.click(screen.getByRole("button", { name: /^save$/i }));
+    expect(onSave).not.toHaveBeenCalled();
+  });
+
+  it("persists after the selected technician changes", async () => {
+    const onSave = renderAssigned();
+    fireEvent.click(screen.getByRole("button", { name: /jordan lee/i }));
+    fireEvent.click(await screen.findByRole("button", { name: /casey new/i }));
+    fireEvent.click(screen.getByRole("button", { name: /^save$/i }));
+
+    await waitFor(() => {
+      expect(onSave).toHaveBeenCalledWith(
+        expect.objectContaining({
+          vendorId: "11",
+          tech: "Casey New",
+          company: "Gateway Plumbing",
+        }),
+      );
+    });
+  });
+
+  it("persists a company-only assignment without selecting a technician", async () => {
+    const onSave = vi.fn();
+    renderWithProviders(
+      <VendorDialog
+        open
+        onOpenChange={vi.fn()}
+        vendorId=""
+        company=""
+        tech=""
+        vendors={[jordan, casey]}
+        onSave={onSave}
+      />,
+    );
+
+    fireEvent.click(screen.getByRole("button", { name: /select company/i }));
+    fireEvent.click(await screen.findByRole("button", { name: "Gateway Plumbing" }));
+    fireEvent.click(screen.getByRole("button", { name: /^save$/i }));
+
+    expect(onSave).toHaveBeenCalledWith(
+      expect.objectContaining({
+        vendorId: "10",
+        company: "Gateway Plumbing",
+        tech: "",
+        techPhone: "",
+      }),
+    );
+  });
+
+  it("only offers technicians from the selected company", async () => {
+    renderWithProviders(
+      <VendorDialog
+        open
+        onOpenChange={vi.fn()}
+        vendorId=""
+        company=""
+        tech=""
+        vendors={[jordan, casey, avery]}
+        onSave={vi.fn()}
+      />,
+    );
+
+    fireEvent.click(screen.getByRole("button", { name: /select company/i }));
+    fireEvent.click(await screen.findByRole("button", { name: "Coastal HVAC" }));
+    fireEvent.click(screen.getByRole("button", { name: /select technician/i }));
+
+    expect(await screen.findByRole("button", { name: "Avery Chen" })).toBeInTheDocument();
+    expect(screen.queryByRole("button", { name: "Jordan Lee" })).not.toBeInTheDocument();
+    expect(screen.queryByRole("button", { name: "Casey New" })).not.toBeInTheDocument();
+  });
+
+  it("does not persist after a notes-only change", () => {
+    const onSave = renderAssigned();
+    fireEvent.change(screen.getByPlaceholderText("Contact preferences, availability, etc."), {
+      target: { value: "Gate code 12" },
+    });
+    fireEvent.click(screen.getByRole("button", { name: /^save$/i }));
+    expect(onSave).not.toHaveBeenCalled();
+  });
+});
diff --git a/src/test/app/(protected)/workorders/vendor-dialog-stable-identity.test.tsx b/src/test/app/(protected)/workorders/vendor-dialog-stable-identity.test.tsx
index c987eab5..fb89fc1c 100644
--- a/src/test/app/(protected)/workorders/vendor-dialog-stable-identity.test.tsx
+++ b/src/test/app/(protected)/workorders/vendor-dialog-stable-identity.test.tsx
@@ -78,7 +78,7 @@ describe("VendorDialog stable technician identity", () => {
 
     // Draft stays staged: add form collapses and select still shows the colliding name.
     expect(screen.getByRole("button", { name: /\+ add technician/i })).toBeTruthy();
-    expect(screen.getByText("Jordan Lee · Gateway Plumbing")).toBeTruthy();
+    expect(screen.getByRole("button", { name: "Jordan Lee" })).toBeTruthy();
 
     fireEvent.change(screen.getByDisplayValue("3145550199"), {
       target: { value: "(314) 555-9999" },
@@ -151,7 +151,7 @@ describe("VendorDialog stable technician identity", () => {
     });
     fireEvent.click(screen.getByRole("button", { name: /^add$/i }));
 
-    expect(screen.getByText("Casey New · Gateway Plumbing")).toBeTruthy();
+    expect(screen.getByRole("button", { name: "Casey New" })).toBeTruthy();
 
     fireEvent.click(screen.getByRole("button", { name: /^save$/i }));
 
@@ -175,4 +175,56 @@ describe("VendorDialog stable technician identity", () => {
       );
     });
   });
+
+  it("keeps a staged draft when the same company is picked again", async () => {
+    const onSave = vi.fn();
+    mutateAsync.mockResolvedValue({
+      ...createdVendor,
+      id: 88,
+      contactName: "Casey New",
+      phone: "3145550188",
+    });
+
+    renderWithProviders(
+      <VendorDialog
+        open={true}
+        onOpenChange={vi.fn()}
+        vendorId={10}
+        company="Gateway Plumbing"
+        tech="Jordan Lee"
+        techPhone="(314) 555-0100"
+        vendors={[existingVendor]}
+        onSave={onSave}
+      />,
+    );
+
+    fireEvent.click(screen.getByRole("button", { name: /\+ add technician/i }));
+    fireEvent.change(screen.getByPlaceholderText("Full name"), {
+      target: { value: "Casey New" },
+    });
+    fireEvent.change(screen.getByPlaceholderText("(000) 000-0000"), {
+      target: { value: "3145550188" },
+    });
+    fireEvent.click(screen.getByRole("button", { name: /^add$/i }));
+
+    fireEvent.click(screen.getByRole("button", { name: "Gateway Plumbing" }));
+    const companyButtons = await screen.findAllByRole("button", { name: "Gateway Plumbing" });
+    fireEvent.click(companyButtons[companyButtons.length - 1]!);
+    fireEvent.click(screen.getByRole("button", { name: /^save$/i }));
+
+    await waitFor(() => {
+      expect(mutateAsync).toHaveBeenCalledWith(
+        expect.objectContaining({
+          contactName: "Casey New",
+          phone: "3145550188",
+        }),
+      );
+    });
+    expect(onSave).toHaveBeenCalledWith(
+      expect.objectContaining({
+        vendorId: "88",
+        tech: "Casey New",
+      }),
+    );
+  });
 });
diff --git a/src/test/app/(protected)/workorders/work-orders-board-core-affordances.test.tsx b/src/test/app/(protected)/workorders/work-orders-board-core-affordances.test.tsx
index e273324c..c466867d 100644
--- a/src/test/app/(protected)/workorders/work-orders-board-core-affordances.test.tsx
+++ b/src/test/app/(protected)/workorders/work-orders-board-core-affordances.test.tsx
@@ -271,4 +271,28 @@ describe("CompDocCell slice affordances", () => {
 
     expect(screen.getByRole("button", { name: /view doc/i })).toBeInTheDocument();
   });
+
+  it("shows the uploaded file count for media work orders", () => {
+    renderWithProviders(
+      <CompDocCell status="No" woType="Emergency" mediaCount={2} onOpenMedia={vi.fn()} />,
+      { withAuth: false },
+    );
+
+    expect(screen.getByRole("button", { name: /2 files/i })).toBeInTheDocument();
+  });
+
+  it("shows a singular label with one file and the Media prompt with none", () => {
+    const { unmount } = renderWithProviders(
+      <CompDocCell status="No" woType="Emergency" mediaCount={1} onOpenMedia={vi.fn()} />,
+      { withAuth: false },
+    );
+    expect(screen.getByRole("button", { name: /^1 file$/i })).toBeInTheDocument();
+    unmount();
+
+    renderWithProviders(
+      <CompDocCell status="No" woType="Emergency" mediaCount={0} onOpenMedia={vi.fn()} />,
+      { withAuth: false },
+    );
+    expect(screen.getByRole("button", { name: /^media$/i })).toBeInTheDocument();
+  });
 });
diff --git a/src/test/domain/work-orders/api/work-orders-api.test.ts b/src/test/domain/work-orders/api/work-orders-api.test.ts
index d383aefc..7d7a3d1f 100644
--- a/src/test/domain/work-orders/api/work-orders-api.test.ts
+++ b/src/test/domain/work-orders/api/work-orders-api.test.ts
@@ -9,6 +9,11 @@ const apiPatch = vi.fn();
 const apiPatchFn = vi.fn();
 const apiPostFn = vi.fn();
 const apiDeleteFn = vi.fn();
+const uploadFormFn = vi.fn();
+
+vi.mock("@/api/upload-form-with-progress", () => ({
+  uploadFormWithProgress: (...args: unknown[]) => uploadFormFn(...args),
+}));
 
 vi.mock("@/api/api", () => ({
   apiGet: (...args: unknown[]) => apiGet(...args),
@@ -654,44 +659,55 @@ describe("workOrdersApi.updateComment", () => {
 
 describe("workOrdersApi.uploadMedia", () => {
   beforeEach(() => {
-    apiPostFn.mockReset();
+    uploadFormFn.mockReset();
   });
 
-  it("POSTs multipart FormData with file and category", async () => {
-    apiPostFn.mockResolvedValue({
+  it("POSTs multipart FormData with file and category, forwarding progress and signal", async () => {
+    uploadFormFn.mockResolvedValue({
       ok: true,
-      json: async () => ({
+      status: 201,
+      data: {
         id: 12,
         category: 3,
         url: "https://cdn.example.com/extra.jpg",
         fileName: "extra.jpg",
         uploadedAt: "2026-07-16T12:00:00Z",
         isLegacy: false,
-      }),
+      },
     });
 
     const file = new File(["bytes"], "extra.jpg", { type: "image/jpeg" });
-    const item = await workOrdersApi.uploadMedia(10, file, "Extra");
+    const onProgress = vi.fn();
+    const signal = new AbortController().signal;
+    const item = await workOrdersApi.uploadMedia(10, file, "Extra", { signal, onProgress });
 
-    expect(apiPostFn).toHaveBeenCalledWith(
-      API_PATHS.workOrder.media(10),
-      expect.objectContaining({ throwHttpErrors: false }),
-    );
-    const body = apiPostFn.mock.calls[0]?.[1]?.body as FormData;
+    expect(uploadFormFn).toHaveBeenCalledWith(API_PATHS.workOrder.media(10), expect.any(FormData), {
+      signal,
+      onProgress,
+    });
+    const body = uploadFormFn.mock.calls[0]?.[1] as FormData;
     expect(body.get("category")).toBe("Extra");
     expect(body.get("file")).toBeInstanceOf(File);
     expect(item.id).toBe("12");
     expect(item.category).toBe("Extra");
   });
 
+  it("does not upload through Ky, whose streamed body breaks HTTP/1.1 transports", async () => {
+    uploadFormFn.mockResolvedValue({ ok: true, status: 200, data: { id: 12, category: 3 } });
+
+    await workOrdersApi.uploadMedia(10, new File(["x"], "a.jpg", { type: "image/jpeg" }), "Before");
+
+    expect(apiPostFn).not.toHaveBeenCalled();
+  });
+
   it("throws BoardPatchValidationError on 422", async () => {
-    apiPostFn.mockResolvedValue({
+    uploadFormFn.mockResolvedValue({
       ok: false,
       status: 422,
-      json: async () => ({
+      data: {
         code: "ReadOnly",
         message: "Work order is read-only.",
-      }),
+      },
     });
 
     const { BoardPatchValidationError } =
diff --git a/src/test/domain/work-orders/mappers/work-order-board-detail-mapper.test.ts b/src/test/domain/work-orders/mappers/work-order-board-detail-mapper.test.ts
index 21867fa4..7f34bcc8 100644
--- a/src/test/domain/work-orders/mappers/work-order-board-detail-mapper.test.ts
+++ b/src/test/domain/work-orders/mappers/work-order-board-detail-mapper.test.ts
@@ -236,6 +236,20 @@ describe("mapWorkOrderBoardDetail", () => {
     });
   });
 
+  it("shows the uploaded file name instead of the stored guid name", () => {
+    const stored = mapBoardDetailMediaItem({
+      id: 30,
+      category: 3,
+      url: "https://cdn.example.com/7a0cf3b5-3eeb-4c4f-a86e-8e2da1b0c9f4_6370_1_Before.jpg",
+      fileName: "7a0cf3b5-3eeb-4c4f-a86e-8e2da1b0c9f4_6370_1_Before.jpg",
+    });
+    expect(stored.fileName).toBe("6370_1_Before.jpg");
+    expect(boardMediaItemsToMediaFiles([stored])[0]).toMatchObject({
+      name: "6370_1_Before.jpg",
+      fileType: "image",
+    });
+  });
+
   it("maps numeric category and marks negative ids as legacy", () => {
     const legacy = mapBoardDetailMediaItem({
       id: -1,
diff --git a/src/test/domain/work-orders/mappers/work-order-table-row-mapper.test.ts b/src/test/domain/work-orders/mappers/work-order-table-row-mapper.test.ts
index 81b8e3e8..0b0e78c5 100644
--- a/src/test/domain/work-orders/mappers/work-order-table-row-mapper.test.ts
+++ b/src/test/domain/work-orders/mappers/work-order-table-row-mapper.test.ts
@@ -90,6 +90,25 @@ describe("mapWorkOrderTableRow avetaRequired", () => {
   });
 });
 
+describe("mapWorkOrderTableRow mediaCount", () => {
+  it("maps the board mediaCount that feeds the CompDoc file count", () => {
+    const row = mapWorkOrderTableRow({
+      id: 11,
+      workOrderType: WORK_ORDER_TYPE_API.Emergency,
+      mediaCount: 2,
+    });
+    expect(row.mediaCount).toBe(2);
+  });
+
+  it("defaults mediaCount to zero when the board omits it", () => {
+    const row = mapWorkOrderTableRow({
+      id: 12,
+      workOrderType: WORK_ORDER_TYPE_API.Emergency,
+    });
+    expect(row.mediaCount).toBe(0);
+  });
+});
+
 describe("mapWorkOrderTableRow primaryDispatchStatus", () => {
   it.each([
     ["primaryDispatchStatus", "Refused"],
diff --git a/src/test/domain/work-orders/use-cases/use-work-order-table-mutations-assigned-toast.test.tsx b/src/test/domain/work-orders/use-cases/use-work-order-table-mutations-assigned-toast.test.tsx
index 0bfe1699..a4b0d0cc 100644
--- a/src/test/domain/work-orders/use-cases/use-work-order-table-mutations-assigned-toast.test.tsx
+++ b/src/test/domain/work-orders/use-cases/use-work-order-table-mutations-assigned-toast.test.tsx
@@ -7,6 +7,7 @@ import type { WorkOrderTableRow } from "@/domain/work-orders/types/work-order-ta
 import { useWorkOrderTableMutations } from "@/domain/work-orders/use-cases/use-work-order-table-mutations";
 import {
   applyAssignedToTableSave,
+  applyVendorTableSave,
   workOrderSavedMessage,
 } from "@/domain/work-orders/utils/work-order-feedback-toasts";
 
@@ -94,4 +95,38 @@ describe("useWorkOrderTableMutations assigned-to toast", () => {
     await waitFor(() => expect(toast.error).toHaveBeenCalled());
     expect(toast.success).not.toHaveBeenCalled();
   });
+
+  it("replaces the raw DispatchRequired validation string with user-facing copy", async () => {
+    const { BoardPatchValidationError } =
+      await import("@/domain/work-orders/errors/board-patch-errors");
+    patchBoardField.mockRejectedValue(
+      new BoardPatchValidationError(
+        "DispatchRequired",
+        "A primary dispatch is required. Set vendorId first or provide primaryDispatchId.",
+      ),
+    );
+
+    const { result } = renderHook(
+      () =>
+        useWorkOrderTableMutations({
+          onPatch: () => undefined,
+          clearPatch: () => undefined,
+          getRow: () => ROW,
+        }),
+      { wrapper: makeWrapper() },
+    );
+
+    act(() => {
+      applyVendorTableSave(result.current.patchField, 7, {
+        vendorId: "",
+        company: "",
+        tech: "",
+        techPhone: "",
+      });
+    });
+
+    await waitFor(() => expect(patchBoardField).toHaveBeenCalled());
+    expect(toast.error).toHaveBeenCalledWith("Select a vendor company before saving.");
+    expect(toast.error).not.toHaveBeenCalledWith(expect.stringContaining("primaryDispatchId"));
+  });
 });
diff --git a/src/test/domain/work-orders/utils/display-file-name.test.ts b/src/test/domain/work-orders/utils/display-file-name.test.ts
new file mode 100644
index 00000000..5c51f417
--- /dev/null
+++ b/src/test/domain/work-orders/utils/display-file-name.test.ts
@@ -0,0 +1,24 @@
+import { describe, expect, it } from "vitest";
+import { toDisplayFileName } from "@/domain/work-orders/utils/display-file-name";
+
+describe("toDisplayFileName", () => {
+  it("drops the storage guid prefix and keeps the original name", () => {
+    expect(toDisplayFileName("7a0cf3b5-3eeb-4c4f-a86e-8e2da1b0c9f4_6370_1_Before.jpg")).toBe(
+      "6370_1_Before.jpg",
+    );
+  });
+
+  it("matches the prefix regardless of guid casing", () => {
+    expect(toDisplayFileName("7A0CF3B5-3EEB-4C4F-A86E-8E2DA1B0C9F4_report.pdf")).toBe("report.pdf");
+  });
+
+  it("keeps names that do not carry a guid prefix", () => {
+    expect(toDisplayFileName("before.jpg")).toBe("before.jpg");
+    expect(toDisplayFileName("2026_summary_report.pdf")).toBe("2026_summary_report.pdf");
+  });
+
+  it("falls back to the raw name when nothing follows the prefix", () => {
+    const onlyPrefix = "7a0cf3b5-3eeb-4c4f-a86e-8e2da1b0c9f4_";
+    expect(toDisplayFileName(onlyPrefix)).toBe(onlyPrefix);
+  });
+});
diff --git a/src/test/domain/work-orders/utils/partition-slide-over-media.test.ts b/src/test/domain/work-orders/utils/partition-slide-over-media.test.ts
new file mode 100644
index 00000000..077eff57
--- /dev/null
+++ b/src/test/domain/work-orders/utils/partition-slide-over-media.test.ts
@@ -0,0 +1,79 @@
+import { describe, expect, it } from "vitest";
+import type { MediaFile } from "@/domain/work-orders/types/work-order-media";
+import {
+  isCompletionSurfaceMedia,
+  isExtrasSurfaceMedia,
+} from "@/domain/work-orders/utils/partition-slide-over-media";
+
+function file(
+  overrides: Partial<MediaFile> & Pick<MediaFile, "id" | "fileType" | "purpose">,
+): MediaFile {
+  return {
+    name: overrides.name ?? overrides.id,
+    url: "https://cdn.example.com/file",
+    category: "Photo",
+    uploadStatus: "done",
+    ...overrides,
+  };
+}
+
+describe("partition-slide-over-media", () => {
+  it("keeps unowned Extra photos on Completion Doc, not Extra Docs", () => {
+    const photo = file({
+      id: "10",
+      fileType: "image",
+      purpose: "Extra",
+      name: "site.jpg",
+    });
+
+    expect(isCompletionSurfaceMedia(photo)).toBe(true);
+    expect(isExtrasSurfaceMedia(photo)).toBe(false);
+  });
+
+  it("keeps Extra PDFs on Extra Docs, not Completion Doc", () => {
+    const pdf = file({
+      id: "4",
+      fileType: "pdf",
+      purpose: "Extra",
+      name: "extra.pdf",
+      category: "Other",
+    });
+
+    expect(isCompletionSurfaceMedia(pdf)).toBe(false);
+    expect(isExtrasSurfaceMedia(pdf)).toBe(true);
+  });
+
+  it("moves Extra photo to Extra Docs after explicit Extra ownership", () => {
+    const photo = file({ id: "10", fileType: "image", purpose: "Extra" });
+    const ownership = {
+      completionOwnedIds: new Set<string>(),
+      extraOwnedIds: new Set(["10"]),
+    };
+
+    expect(isCompletionSurfaceMedia(photo, ownership)).toBe(false);
+    expect(isExtrasSurfaceMedia(photo, ownership)).toBe(true);
+  });
+
+  it("keeps Extra photo on Completion Doc while completion-owned", () => {
+    const photo = file({ id: "10", fileType: "image", purpose: "Extra" });
+    const ownership = {
+      completionOwnedIds: new Set(["10"]),
+      extraOwnedIds: new Set<string>(),
+    };
+
+    expect(isCompletionSurfaceMedia(photo, ownership)).toBe(true);
+    expect(isExtrasSurfaceMedia(photo, ownership)).toBe(false);
+  });
+
+  it("keeps Before/After/Completion and in-flight tiles on Completion Doc", () => {
+    expect(isCompletionSurfaceMedia(file({ id: "1", fileType: "image", purpose: "Before" }))).toBe(
+      true,
+    );
+    expect(
+      isCompletionSurfaceMedia({
+        ...file({ id: "local-1", fileType: "image", purpose: null }),
+        uploadStatus: "uploading",
+      }),
+    ).toBe(true);
+  });
+});
diff --git a/src/test/domain/work-orders/utils/work-order-media-limits.test.ts b/src/test/domain/work-orders/utils/work-order-media-limits.test.ts
index 2ae1f827..49af4e90 100644
--- a/src/test/domain/work-orders/utils/work-order-media-limits.test.ts
+++ b/src/test/domain/work-orders/utils/work-order-media-limits.test.ts
@@ -27,6 +27,7 @@ describe("work-order-media-limits", () => {
 
   it("allows only JPG PNG MP4 MOV by MIME or extension", () => {
     expect(isWorkOrderMediaTypeAllowed({ name: "a.jpg", type: "image/jpeg" } as File)).toBe(true);
+    expect(isWorkOrderMediaTypeAllowed({ name: "a.jpg", type: "image/jpg" } as File)).toBe(true);
     expect(isWorkOrderMediaTypeAllowed({ name: "a.png", type: "image/png" } as File)).toBe(true);
     expect(isWorkOrderMediaTypeAllowed({ name: "a.mp4", type: "video/mp4" } as File)).toBe(true);
     expect(isWorkOrderMediaTypeAllowed({ name: "a.mov", type: "video/quicktime" } as File)).toBe(