Show ExifTool errors in metadata UI with short queue labels.

Store detailMessage from worker failures; inspector shows full text, queue keeps fixed summary messages.

frontend/src/components/upload/MetadataInspector.vue

@@ -10,7 +10,7 @@
             <p v-if="!fileName" class="text-sm text-muted-foreground">Select an image to view its metadata.</p>
 
             <template v-else-if="entry.status === 'error' && !entry.output">
-                <p class="text-sm text-destructive">{{ entry.message }}</p>
+                <p class="whitespace-pre-wrap text-sm text-destructive">{{ entry.detailMessage ?? entry.message }}</p>
             </template>
 
             <template v-else-if="showMetadataTabs">
@@ -18,7 +18,7 @@
 
                 <MetadataOutputPanel v-if="tabBody?.kind === 'output'">{{ tabBody.text }}</MetadataOutputPanel>
 
-                <p v-else-if="tabBody?.kind === 'error'" class="text-sm text-destructive">{{ tabBody.text }}</p>
+                <p v-else-if="tabBody?.kind === 'error'" class="whitespace-pre-wrap text-sm text-destructive">{{ tabBody.text }}</p>
             </template>
 
             <p v-else class="text-sm text-muted-foreground">{{ entry.message }}</p>
@@ -83,7 +83,7 @@ const tabBody = computed((): MetadataTabBody | null => {
     }
 
     if (entry.status === 'error') {
-        return { kind: 'error', text: entry.message };
+        return { kind: 'error', text: entry.detailMessage ?? entry.message };
     }
 
     return null;

frontend/src/stores/metadata.ts

@@ -3,6 +3,7 @@ import { ref } from 'vue';
 import { useExiftoolStore } from '@/stores/exiftool';
 import type { MetadataPreviewEntry } from '@/types/metadata/MetadataPreview';
 import { makeKeyFromFile } from '@/utils/file/makeKeyFromFile';
+import { resolveErrorMessage } from '@/utils/resolveErrorMessage';
 
 const METADATA_IDLE_MESSAGE = 'Waiting to load metadata...';
 const EXIFTOOL_INITIALIZING_MESSAGE = 'Downloading ExifTool…';
@@ -17,11 +18,6 @@ const METADATA_IDLE_PREVIEW: MetadataPreviewEntry = {
     message: METADATA_IDLE_MESSAGE
 };
 
-const METADATA_LOAD_ERROR_PREVIEW: MetadataPreviewEntry = {
-    status: 'error',
-    message: METADATA_LOAD_ERROR_MESSAGE
-};
-
 const EXIFTOOL_PREPARE_ERROR_PREVIEW: MetadataPreviewEntry = {
     status: 'error',
     message: EXIFTOOL_PREPARE_ERROR_MESSAGE
@@ -96,9 +92,15 @@ export const useMetadataStore = defineStore('metadata', () => {
         } catch (error) {
             console.error('[metadata] read failed', { file: file.name, error });
 
-            setPreviewEntry(key, METADATA_LOAD_ERROR_PREVIEW);
+            const entry: MetadataPreviewEntry = {
+                status: 'error',
+                message: METADATA_LOAD_ERROR_MESSAGE,
+                detailMessage: resolveErrorMessage(error, METADATA_LOAD_ERROR_MESSAGE)
+            };
 
-            return METADATA_LOAD_ERROR_PREVIEW;
+            setPreviewEntry(key, entry);
+
+            return entry;
         }
 
         let strippedBlob: Blob;
@@ -116,6 +118,7 @@ export const useMetadataStore = defineStore('metadata', () => {
             const entry: MetadataPreviewEntry = {
                 status: 'error',
                 message: METADATA_STRIP_ERROR_MESSAGE,
+                detailMessage: resolveErrorMessage(error, METADATA_STRIP_ERROR_MESSAGE),
                 output
             };
 
@@ -136,9 +139,16 @@ export const useMetadataStore = defineStore('metadata', () => {
         } catch (error) {
             console.error('[metadata] read after strip failed', { file: file.name, error });
 
-            setPreviewEntry(key, METADATA_LOAD_ERROR_PREVIEW);
+            const entry: MetadataPreviewEntry = {
+                status: 'error',
+                message: METADATA_LOAD_ERROR_MESSAGE,
+                detailMessage: resolveErrorMessage(error, METADATA_LOAD_ERROR_MESSAGE),
+                output
+            };
 
-            return METADATA_LOAD_ERROR_PREVIEW;
+            setPreviewEntry(key, entry);
+
+            return entry;
         }
 
         setStrippedBlob(key, strippedBlob);

frontend/src/types/metadata/MetadataPreview.ts

@@ -3,4 +3,4 @@ export type MetadataPreviewEntry =
     | { status: 'initializing'; message: string }
     | { status: 'processing'; message: string }
     | { status: 'ready'; message: string; output: string; afterStripOutput: string }
-    | { status: 'error'; message: string; output?: string };
+    | { status: 'error'; message: string; output?: string; detailMessage?: string };