refactor(frontend): move report module from lib/ to features/report/

The PDF generator (~658 lines, lazy-loaded) and its public-API wrapper
report.ts are functionally one module. They now live together in
features/report/ instead of being scattered in lib/, which was a poor
home for a 658-line React-pdf component anyway. The lazy-import path
inside report.ts stays relative (./report-pdf), and the four consumers
(flow.tsx, flow-files.tsx, flow-report.tsx, resources.tsx) just swap
'@/lib/report' for '@/features/report'.

Note: copyToClipboard and downloadTextFile come along for the ride —
they're generic helpers used in non-report contexts too. Splitting them
out cleanly into lib/ would be worth a follow-up if you want stricter
domain boundaries.

frontend/src/features/flows/files/flow-files.tsx

@@ -21,9 +21,9 @@ import { Empty, EmptyDescription, EmptyHeader, EmptyMedia, EmptyTitle } from '@/
 import { Form, FormControl, FormField, FormItem } from '@/components/ui/form';
 import { InputGroup, InputGroupAddon, InputGroupButton, InputGroupInput } from '@/components/ui/input-group';
 import { Tooltip, TooltipContent, TooltipTrigger } from '@/components/ui/tooltip';
+import { copyToClipboard } from '@/features/report';
 import { StatusType } from '@/graphql/types';
 import { useFilesDragAndDrop } from '@/hooks/use-files-drag-and-drop';
-import { copyToClipboard } from '@/lib/report';
 import { useFlow } from '@/providers/flow-provider';
 
 import { FlowFilesAttachResourcesDialog } from './flow-files-attach-resources-dialog';

frontend/src/features/report/index.ts

@@ -0,0 +1,8 @@
+export {
+    copyToClipboard,
+    downloadTextFile,
+    generateFileName,
+    generatePDFBlob,
+    generatePDFFromMarkdown,
+    generateReport,
+} from './report';

frontend/src/features/report/report-pdf.tsx

@@ -1,7 +1,7 @@
 import { Document, Font, Page, pdf, StyleSheet, Text, View } from '@react-pdf/renderer';
 import { marked } from 'marked';
 
-import { Log } from './log';
+import { Log } from '@/lib/log';
 
 // Register Noto Sans (covers Latin + Cyrillic + Greek + many other scripts)
 Font.register({

frontend/src/features/report/report.ts

@@ -3,8 +3,7 @@ import GithubSlugger from 'github-slugger';
 import type { FlowFragmentFragment, TaskFragmentFragment } from '@/graphql/types';
 
 import { StatusType } from '@/graphql/types';
-
-import { Log } from './log';
+import { Log } from '@/lib/log';
 
 // Helper function to get emoji for status
 const getStatusEmoji = (status: StatusType): string => {

frontend/src/pages/flows/flow-report.tsx

@@ -3,9 +3,9 @@ import { useParams, useSearchParams } from 'react-router-dom';
 
 import Logo from '@/components/icons/logo';
 import Markdown from '@/components/shared/markdown';
+import { generateFileName, generatePDFFromMarkdown, generateReport } from '@/features/report';
 import { useFlowReportQuery } from '@/graphql/types';
 import { Log } from '@/lib/log';
-import { generateFileName, generatePDFFromMarkdown, generateReport } from '@/lib/report';
 
 type PdfPhase = 'done' | 'error' | 'idle';
 type ReportState = 'content' | 'error' | 'generating' | 'loading';

frontend/src/pages/flows/flow.tsx

@@ -40,11 +40,11 @@ import { Tooltip, TooltipContent, TooltipTrigger } from '@/components/ui/tooltip
 import FlowCentralTabs from '@/features/flows/flow-central-tabs';
 import FlowTabs from '@/features/flows/flow-tabs';
 import { useFlowDetailNavigation } from '@/features/flows/use-flow-detail-navigation';
+import { copyToClipboard, downloadTextFile, generateFileName, generateReport } from '@/features/report';
 import { ResultType, StatusType, useRenameFlowMutation } from '@/graphql/types';
 import { useBreakpoint } from '@/hooks/use-breakpoint';
 import { useFlowTabDetection } from '@/hooks/use-flow-tab-detection';
 import { Log } from '@/lib/log';
-import { copyToClipboard, downloadTextFile, generateFileName, generateReport } from '@/lib/report';
 import { formatName } from '@/lib/utils/format';
 import { useFavorites } from '@/providers/favorites-provider';
 import { useFlow } from '@/providers/flow-provider';

frontend/src/pages/resources/resources.tsx

@@ -39,6 +39,7 @@ import { FileDropZone } from '@/components/ui/file-drop-zone';
 import { InputGroup, InputGroupAddon, InputGroupButton, InputGroupInput } from '@/components/ui/input-group';
 import { Separator } from '@/components/ui/separator';
 import { SidebarTrigger } from '@/components/ui/sidebar';
+import { copyToClipboard } from '@/features/report';
 import { ResourcesCopyDialog } from '@/features/resources/resources-copy-dialog';
 import { ResourcesMkdirDialog } from '@/features/resources/resources-mkdir-dialog';
 import { ResourcesMoveDialog } from '@/features/resources/resources-move-dialog';
@@ -50,7 +51,6 @@ import { useResourcesUpload } from '@/features/resources/use-resources-upload';
 import { useEffectAfterMount } from '@/hooks/use-effect-after-mount';
 import { useFilesDragAndDrop } from '@/hooks/use-files-drag-and-drop';
 import { usePageStorageKeys } from '@/hooks/use-page-storage-keys';
-import { copyToClipboard } from '@/lib/report';
 import { migrateLegacyViewOptions, saveViewOptions } from '@/lib/view-options-storage';
 import { useResources } from '@/providers/resources-provider';