diff --git a/src/components/skriptai/ProjectDetail.tsx b/src/components/skriptai/ProjectDetail.tsx
index 46adf65..6f975f2 100644
--- a/src/components/skriptai/ProjectDetail.tsx
+++ b/src/components/skriptai/ProjectDetail.tsx
@@ -26,6 +26,7 @@ import {
     LuBrain,
     LuChartBar,
     LuDownload,
+    LuHistory,
 } from 'react-icons/lu';
 import {
     useGetProject,
@@ -38,7 +39,7 @@ import {
 
 // Tab Components
 import ResearchTab from './tabs/ResearchTab';
-import { BriefTab, CharactersTab, ScriptTab, AnalysisTab } from './tabs';
+import { BriefTab, CharactersTab, ScriptTab, AnalysisTab, VersionsTab } from './tabs';
 
 
 interface ProjectDetailProps {
@@ -192,6 +193,15 @@ export default function ProjectDetail({ projectId }: ProjectDetailProps) {
                         <LuChartBar />
                         {t('analysis')}
                     </Tabs.Trigger>
+                    <Tabs.Trigger value='versions'>
+                        <LuHistory />
+                        Versiyonlar
+                        {project.currentVersionNumber > 0 && (
+                            <Badge ml={2} size='sm'>
+                                {project.currentVersionNumber}
+                            </Badge>
+                        )}
+                    </Tabs.Trigger>
                 </Tabs.List>
 
                 <Box minH='500px'>
@@ -234,6 +244,10 @@ export default function ProjectDetail({ projectId }: ProjectDetailProps) {
                             isAnalyzing={neuroAnalysis.isPending || youtubeAudit.isPending}
                         />
                     </Tabs.Content>
+
+                    <Tabs.Content value='versions'>
+                        <VersionsTab project={project} />
+                    </Tabs.Content>
                 </Box>
             </Tabs.Root>
         </Container>
diff --git a/src/components/skriptai/tabs/VersionsTab.tsx b/src/components/skriptai/tabs/VersionsTab.tsx
new file mode 100644
index 0000000..d6b8ab0
--- /dev/null
+++ b/src/components/skriptai/tabs/VersionsTab.tsx
@@ -0,0 +1,386 @@
+'use client';
+
+import { useState } from 'react';
+import { useTranslations } from 'next-intl';
+import {
+    Box,
+    Button,
+    Card,
+    Flex,
+    Heading,
+    HStack,
+    IconButton,
+    Text,
+    VStack,
+    Badge,
+    Input,
+    Textarea,
+} from '@chakra-ui/react';
+import {
+    LuHistory,
+    LuSave,
+    LuUndo2,
+    LuTrash2,
+    LuGitCompare,
+    LuCheck,
+    LuClock,
+    LuBot,
+    LuUser,
+    LuChevronDown,
+    LuChevronUp,
+} from 'react-icons/lu';
+import {
+    useVersions,
+    useCreateSnapshot,
+    useRestoreVersion,
+    useDeleteVersion,
+} from '@/lib/api/skriptai';
+import { toaster } from '@/components/ui/feedback/toaster';
+import type { ScriptProject, ScriptVersionSummary } from '@/types/skriptai';
+
+interface VersionsTabProps {
+    project: ScriptProject;
+}
+
+export default function VersionsTab({ project }: VersionsTabProps) {
+    const t = useTranslations('skriptai');
+    const { data: versions, isLoading } = useVersions(project.id);
+    const createSnapshot = useCreateSnapshot(project.id);
+    const restoreVersion = useRestoreVersion(project.id);
+    const deleteVersion = useDeleteVersion(project.id);
+
+    const [showSaveForm, setShowSaveForm] = useState(false);
+    const [saveLabel, setSaveLabel] = useState('');
+    const [saveNote, setSaveNote] = useState('');
+    const [expandedVersionId, setExpandedVersionId] = useState<string | null>(null);
+
+    const handleSave = async () => {
+        await createSnapshot.mutateAsync({
+            label: saveLabel || undefined,
+            changeNote: saveNote || undefined,
+        });
+        setSaveLabel('');
+        setSaveNote('');
+        setShowSaveForm(false);
+        toaster.create({
+            title: 'Versiyon kaydedildi',
+            type: 'success',
+        });
+    };
+
+    const handleRestore = async (versionId: string, versionNumber: number) => {
+        if (!confirm(`v${versionNumber} versiyonuna geri dönmek istediğinize emin misiniz? Mevcut durum otomatik olarak kaydedilecektir.`)) {
+            return;
+        }
+        await restoreVersion.mutateAsync(versionId);
+        toaster.create({
+            title: `v${versionNumber} versiyonuna geri dönüldü`,
+            type: 'success',
+        });
+    };
+
+    const handleDelete = async (versionId: string, versionNumber: number) => {
+        if (!confirm(`v${versionNumber} versiyonunu silmek istediğinize emin misiniz?`)) {
+            return;
+        }
+        await deleteVersion.mutateAsync(versionId);
+        toaster.create({
+            title: `v${versionNumber} silindi`,
+            type: 'info',
+        });
+    };
+
+    const getGeneratedByIcon = (generatedBy: string) => {
+        switch (generatedBy) {
+            case 'AI':
+                return <LuBot />;
+            case 'USER':
+                return <LuUser />;
+            default:
+                return <LuClock />;
+        }
+    };
+
+    const getGeneratedByColor = (generatedBy: string) => {
+        switch (generatedBy) {
+            case 'AI':
+                return 'purple';
+            case 'USER':
+                return 'blue';
+            default:
+                return 'gray';
+        }
+    };
+
+    const getGeneratedByLabel = (generatedBy: string) => {
+        switch (generatedBy) {
+            case 'AI':
+                return 'AI Üretimi';
+            case 'USER':
+                return 'Manuel Kayıt';
+            default:
+                return 'Otomatik Kayıt';
+        }
+    };
+
+    const formatDate = (dateStr: string) => {
+        const d = new Date(dateStr);
+        return d.toLocaleString('tr-TR', {
+            day: '2-digit',
+            month: '2-digit',
+            year: 'numeric',
+            hour: '2-digit',
+            minute: '2-digit',
+        });
+    };
+
+    return (
+        <VStack align='stretch' gap={6}>
+            {/* Header */}
+            <Flex justify='space-between' align='center' flexWrap='wrap' gap={4}>
+                <HStack gap={3}>
+                    <LuHistory size={20} />
+                    <Heading size='md'>Versiyon Geçmişi</Heading>
+                    <Badge colorPalette='blue'>
+                        {versions?.length || 0} versiyon
+                    </Badge>
+                    <Badge colorPalette='green'>
+                        Şu an: v{project.currentVersionNumber}
+                    </Badge>
+                </HStack>
+
+                <Button
+                    colorPalette='blue'
+                    onClick={() => setShowSaveForm(!showSaveForm)}
+                    disabled={!project.segments || project.segments.length === 0}
+                >
+                    <LuSave />
+                    Mevcut Durumu Kaydet
+                </Button>
+            </Flex>
+
+            {/* Save Form */}
+            {showSaveForm && (
+                <Card.Root p={4} borderColor='blue.200' borderWidth='2px'>
+                    <VStack align='stretch' gap={3}>
+                        <Text fontWeight='bold' fontSize='sm'>
+                            💾 Yeni Versiyon Kaydet
+                        </Text>
+                        <Input
+                            placeholder='Versiyon etiketi (ör. "Final Taslak", "Sponsor Revizyonu")'
+                            value={saveLabel}
+                            onChange={(e) => setSaveLabel(e.target.value)}
+                            size='sm'
+                        />
+                        <Textarea
+                            placeholder='Değişiklik notu (isteğe bağlı)'
+                            value={saveNote}
+                            onChange={(e) => setSaveNote(e.target.value)}
+                            rows={2}
+                            size='sm'
+                        />
+                        <HStack justify='end'>
+                            <Button
+                                size='sm'
+                                variant='ghost'
+                                onClick={() => setShowSaveForm(false)}
+                            >
+                                İptal
+                            </Button>
+                            <Button
+                                size='sm'
+                                colorPalette='green'
+                                onClick={handleSave}
+                                loading={createSnapshot.isPending}
+                            >
+                                <LuCheck />
+                                Kaydet
+                            </Button>
+                        </HStack>
+                    </VStack>
+                </Card.Root>
+            )}
+
+            {/* No segments warning */}
+            {(!project.segments || project.segments.length === 0) && (
+                <Card.Root p={6}>
+                    <VStack>
+                        <Text color='gray.500'>
+                            Henüz script üretilmemiş. Önce bir script oluşturun, ardından versiyonları burada takip edebilirsiniz.
+                        </Text>
+                    </VStack>
+                </Card.Root>
+            )}
+
+            {/* Version List */}
+            {isLoading ? (
+                <Card.Root p={6}>
+                    <Text color='gray.500'>Versiyonlar yükleniyor...</Text>
+                </Card.Root>
+            ) : versions && versions.length > 0 ? (
+                <VStack align='stretch' gap={3}>
+                    {versions.map((version) => (
+                        <VersionCard
+                            key={version.id}
+                            version={version}
+                            isExpanded={expandedVersionId === version.id}
+                            onToggle={() =>
+                                setExpandedVersionId(
+                                    expandedVersionId === version.id
+                                        ? null
+                                        : version.id,
+                                )
+                            }
+                            onRestore={() =>
+                                handleRestore(version.id, version.versionNumber)
+                            }
+                            onDelete={() =>
+                                handleDelete(version.id, version.versionNumber)
+                            }
+                            isRestoring={restoreVersion.isPending}
+                            isDeleting={deleteVersion.isPending}
+                            getGeneratedByIcon={getGeneratedByIcon}
+                            getGeneratedByColor={getGeneratedByColor}
+                            getGeneratedByLabel={getGeneratedByLabel}
+                            formatDate={formatDate}
+                        />
+                    ))}
+                </VStack>
+            ) : (
+                project.segments &&
+                project.segments.length > 0 && (
+                    <Card.Root p={6}>
+                        <VStack>
+                            <Text color='gray.500'>
+                                Henüz kayıtlı versiyon yok. "Mevcut Durumu Kaydet" butonuna tıklayarak ilk versiyonu oluşturun.
+                            </Text>
+                            <Text color='gray.400' fontSize='sm'>
+                                Script yeniden üretildiğinde versiyonlar otomatik olarak kaydedilir.
+                            </Text>
+                        </VStack>
+                    </Card.Root>
+                )
+            )}
+        </VStack>
+    );
+}
+
+// ========== Version Card ==========
+
+interface VersionCardProps {
+    version: ScriptVersionSummary;
+    isExpanded: boolean;
+    onToggle: () => void;
+    onRestore: () => void;
+    onDelete: () => void;
+    isRestoring: boolean;
+    isDeleting: boolean;
+    getGeneratedByIcon: (g: string) => React.ReactNode;
+    getGeneratedByColor: (g: string) => string;
+    getGeneratedByLabel: (g: string) => string;
+    formatDate: (d: string) => string;
+}
+
+function VersionCard({
+    version,
+    isExpanded,
+    onToggle,
+    onRestore,
+    onDelete,
+    isRestoring,
+    isDeleting,
+    getGeneratedByIcon,
+    getGeneratedByColor,
+    getGeneratedByLabel,
+    formatDate,
+}: VersionCardProps) {
+    return (
+        <Card.Root
+            _hover={{ shadow: 'md', borderColor: 'blue.200' }}
+            transition='all 0.2s'
+            cursor='pointer'
+            onClick={onToggle}
+        >
+            <Card.Header py={3} px={4}>
+                <Flex justify='space-between' align='center'>
+                    <HStack gap={3}>
+                        <Badge
+                            colorPalette={getGeneratedByColor(version.generatedBy)}
+                            variant='subtle'
+                            px={2}
+                            py={1}
+                        >
+                            {getGeneratedByIcon(version.generatedBy)}
+                            <Text ml={1} fontSize='xs'>
+                                v{version.versionNumber}
+                            </Text>
+                        </Badge>
+
+                        <VStack align='start' gap={0}>
+                            <Text fontWeight='semibold' fontSize='sm'>
+                                {version.label || `Versiyon ${version.versionNumber}`}
+                            </Text>
+                            <Text fontSize='xs' color='gray.500'>
+                                {formatDate(version.createdAt)} •{' '}
+                                {getGeneratedByLabel(version.generatedBy)}
+                            </Text>
+                        </VStack>
+                    </HStack>
+
+                    <HStack gap={2}>
+                        <Badge colorPalette='gray' size='sm'>
+                            {version.segmentCount} bölüm
+                        </Badge>
+                        <Badge colorPalette='gray' size='sm'>
+                            ~{version.totalWords} kelime
+                        </Badge>
+                        {isExpanded ? <LuChevronUp /> : <LuChevronDown />}
+                    </HStack>
+                </Flex>
+            </Card.Header>
+
+            {isExpanded && (
+                <Card.Body pt={0} px={4} pb={4}>
+                    <VStack align='stretch' gap={3}>
+                        {version.changeNote && (
+                            <Box
+                                bg='gray.50'
+                                _dark={{ bg: 'whiteAlpha.100' }}
+                                p={3}
+                                borderRadius='md'
+                            >
+                                <Text fontSize='xs' fontWeight='bold' color='gray.500' mb={1}>
+                                    📝 Değişiklik Notu
+                                </Text>
+                                <Text fontSize='sm'>{version.changeNote}</Text>
+                            </Box>
+                        )}
+
+                        <Flex gap={2} justify='end' onClick={(e) => e.stopPropagation()}>
+                            <Button
+                                size='xs'
+                                colorPalette='blue'
+                                variant='outline'
+                                onClick={onRestore}
+                                loading={isRestoring}
+                            >
+                                <LuUndo2 />
+                                Bu Versiyona Geri Dön
+                            </Button>
+                            <IconButton
+                                aria-label='Versiyonu sil'
+                                size='xs'
+                                colorPalette='red'
+                                variant='ghost'
+                                onClick={onDelete}
+                                loading={isDeleting}
+                            >
+                                <LuTrash2 />
+                            </IconButton>
+                        </Flex>
+                    </VStack>
+                </Card.Body>
+            )}
+        </Card.Root>
+    );
+}
diff --git a/src/components/skriptai/tabs/index.ts b/src/components/skriptai/tabs/index.ts
index 17311a9..3e96fd1 100644
--- a/src/components/skriptai/tabs/index.ts
+++ b/src/components/skriptai/tabs/index.ts
@@ -3,3 +3,4 @@ export { default as BriefTab } from './BriefTab';
 export { default as CharactersTab } from './CharactersTab';
 export { default as ScriptTab } from './ScriptTab';
 export { default as AnalysisTab } from './AnalysisTab';
+export { default as VersionsTab } from './VersionsTab';
diff --git a/src/lib/api/skriptai/index.ts b/src/lib/api/skriptai/index.ts
index 8345670..1eaaa8f 100644
--- a/src/lib/api/skriptai/index.ts
+++ b/src/lib/api/skriptai/index.ts
@@ -33,6 +33,8 @@ export {
     useDeleteSegment,
     useReorderSegments,
     useGenerateSegmentImage,
+    useRegenerateSegment,
+    useRegeneratePartial,
     ScriptsQueryKeys,
 } from './scripts/use-hooks';
 
@@ -64,6 +66,20 @@ export {
     AnalysisQueryKeys,
 } from './analysis/use-hooks';
 
+// Services - Versions
+export { versionsService } from './versions/service';
+
+// Hooks - Versions
+export {
+    useVersions,
+    useVersion,
+    useCreateSnapshot,
+    useRestoreVersion,
+    useDeleteVersion,
+    useCompareVersions,
+    VersionsQueryKeys,
+} from './versions/use-hooks';
+
 // Types - Projects
 export type {
     CreateProjectDto,
diff --git a/src/lib/api/skriptai/scripts/service.ts b/src/lib/api/skriptai/scripts/service.ts
index 26eb944..efb3ea1 100644
--- a/src/lib/api/skriptai/scripts/service.ts
+++ b/src/lib/api/skriptai/scripts/service.ts
@@ -80,4 +80,19 @@ export const scriptsService = {
             method: 'post',
         });
     },
+    regenerateSegment: (segmentId: string) => {
+        return apiRequest<ApiResponse<ScriptSegment>>({
+            url: `/skriptai/scripts/segments/${segmentId}/regenerate`,
+            client: 'skriptai',
+            method: 'post',
+        });
+    },
+    regeneratePartial: (projectId: string, segmentIds: string[]) => {
+        return apiRequest<ApiResponse<ScriptSegment[]>>({
+            url: '/skriptai/scripts/regenerate-partial',
+            client: 'skriptai',
+            method: 'post',
+            data: { projectId, segmentIds },
+        });
+    },
 };
diff --git a/src/lib/api/skriptai/scripts/use-hooks.ts b/src/lib/api/skriptai/scripts/use-hooks.ts
index 96f734d..cb6a544 100644
--- a/src/lib/api/skriptai/scripts/use-hooks.ts
+++ b/src/lib/api/skriptai/scripts/use-hooks.ts
@@ -134,3 +134,38 @@ export function useGenerateSegmentImage(projectId: string) {
 
     return { data: data?.data, ...rest };
 }
+
+export function useRegenerateSegment(projectId: string) {
+    const queryClient = useQueryClient();
+
+    const { data, ...rest } = useMutation<ApiResponse<ScriptSegment>, Error, string>({
+        mutationFn: (segmentId) => scriptsService.regenerateSegment(segmentId),
+        onSuccess: () => {
+            queryClient.invalidateQueries({
+                queryKey: ProjectsQueryKeys.detail(projectId),
+            });
+        },
+    });
+
+    return { data: data?.data, ...rest };
+}
+
+export function useRegeneratePartial(projectId: string) {
+    const queryClient = useQueryClient();
+
+    const { data, ...rest } = useMutation<
+        ApiResponse<ScriptSegment[]>,
+        Error,
+        string[]
+    >({
+        mutationFn: (segmentIds) =>
+            scriptsService.regeneratePartial(projectId, segmentIds),
+        onSuccess: () => {
+            queryClient.invalidateQueries({
+                queryKey: ProjectsQueryKeys.detail(projectId),
+            });
+        },
+    });
+
+    return { data: data?.data, ...rest };
+}
diff --git a/src/lib/api/skriptai/versions/service.ts b/src/lib/api/skriptai/versions/service.ts
new file mode 100644
index 0000000..578296e
--- /dev/null
+++ b/src/lib/api/skriptai/versions/service.ts
@@ -0,0 +1,78 @@
+import { apiRequest } from '@/lib/api/api-service';
+import { ApiResponse } from '@/types/api-response';
+import type {
+    ScriptVersionSummary,
+    ScriptVersion,
+    ScriptProject,
+    VersionComparison,
+} from '@/types/skriptai';
+
+/**
+ * Versions Service - SkriptAI
+ * Matches Backend: /api/skriptai/projects/:projectId/versions/*
+ */
+
+const list = (projectId: string) => {
+    return apiRequest<ApiResponse<ScriptVersionSummary[]>>({
+        url: `/skriptai/projects/${projectId}/versions`,
+        client: 'skriptai',
+        method: 'get',
+    });
+};
+
+const getOne = (projectId: string, versionId: string) => {
+    return apiRequest<ApiResponse<ScriptVersion>>({
+        url: `/skriptai/projects/${projectId}/versions/${versionId}`,
+        client: 'skriptai',
+        method: 'get',
+    });
+};
+
+const createSnapshot = (
+    projectId: string,
+    data: { label?: string; changeNote?: string },
+) => {
+    return apiRequest<ApiResponse<ScriptVersion>>({
+        url: `/skriptai/projects/${projectId}/versions`,
+        client: 'skriptai',
+        method: 'post',
+        data,
+    });
+};
+
+const restore = (projectId: string, versionId: string) => {
+    return apiRequest<ApiResponse<ScriptProject>>({
+        url: `/skriptai/projects/${projectId}/versions/${versionId}/restore`,
+        client: 'skriptai',
+        method: 'post',
+    });
+};
+
+const remove = (projectId: string, versionId: string) => {
+    return apiRequest<ApiResponse<{ deleted: boolean; versionNumber: number }>>({
+        url: `/skriptai/projects/${projectId}/versions/${versionId}`,
+        client: 'skriptai',
+        method: 'delete',
+    });
+};
+
+const compare = (
+    projectId: string,
+    versionAId: string,
+    versionBId: string,
+) => {
+    return apiRequest<ApiResponse<VersionComparison>>({
+        url: `/skriptai/projects/${projectId}/versions/compare?versionA=${versionAId}&versionB=${versionBId}`,
+        client: 'skriptai',
+        method: 'get',
+    });
+};
+
+export const versionsService = {
+    list,
+    getOne,
+    createSnapshot,
+    restore,
+    remove,
+    compare,
+};
diff --git a/src/lib/api/skriptai/versions/use-hooks.ts b/src/lib/api/skriptai/versions/use-hooks.ts
new file mode 100644
index 0000000..6dcbdc2
--- /dev/null
+++ b/src/lib/api/skriptai/versions/use-hooks.ts
@@ -0,0 +1,136 @@
+import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
+import { ApiResponse } from '@/types/api-response';
+import { versionsService } from './service';
+import type {
+    ScriptVersionSummary,
+    ScriptVersion,
+    ScriptProject,
+    VersionComparison,
+} from '@/types/skriptai';
+import { ProjectsQueryKeys } from '../projects/use-hooks';
+
+export const VersionsQueryKeys = {
+    all: ['skriptai', 'versions'] as const,
+    list: (projectId: string) =>
+        ['skriptai', 'versions', projectId] as const,
+    detail: (projectId: string, versionId: string) =>
+        ['skriptai', 'versions', projectId, versionId] as const,
+    compare: (projectId: string, vA: string, vB: string) =>
+        ['skriptai', 'versions', projectId, 'compare', vA, vB] as const,
+};
+
+/**
+ * Fetch all versions for a project
+ */
+export function useVersions(projectId: string) {
+    const { data, ...rest } = useQuery<ApiResponse<ScriptVersionSummary[]>>({
+        queryKey: VersionsQueryKeys.list(projectId),
+        queryFn: () => versionsService.list(projectId),
+        enabled: !!projectId,
+    });
+
+    return { data: data?.data, ...rest };
+}
+
+/**
+ * Fetch a single version with full snapshot data
+ */
+export function useVersion(projectId: string, versionId: string) {
+    const { data, ...rest } = useQuery<ApiResponse<ScriptVersion>>({
+        queryKey: VersionsQueryKeys.detail(projectId, versionId),
+        queryFn: () => versionsService.getOne(projectId, versionId),
+        enabled: !!projectId && !!versionId,
+    });
+
+    return { data: data?.data, ...rest };
+}
+
+/**
+ * Create a manual snapshot
+ */
+export function useCreateSnapshot(projectId: string) {
+    const queryClient = useQueryClient();
+
+    const { data, ...rest } = useMutation<
+        ApiResponse<ScriptVersion>,
+        Error,
+        { label?: string; changeNote?: string }
+    >({
+        mutationFn: (snapshotData) =>
+            versionsService.createSnapshot(projectId, snapshotData),
+        onSuccess: () => {
+            queryClient.invalidateQueries({
+                queryKey: VersionsQueryKeys.list(projectId),
+            });
+        },
+    });
+
+    return { data: data?.data, ...rest };
+}
+
+/**
+ * Restore to a specific version
+ */
+export function useRestoreVersion(projectId: string) {
+    const queryClient = useQueryClient();
+
+    const { data, ...rest } = useMutation<
+        ApiResponse<ScriptProject>,
+        Error,
+        string
+    >({
+        mutationFn: (versionId) =>
+            versionsService.restore(projectId, versionId),
+        onSuccess: () => {
+            queryClient.invalidateQueries({
+                queryKey: ProjectsQueryKeys.detail(projectId),
+            });
+            queryClient.invalidateQueries({
+                queryKey: VersionsQueryKeys.list(projectId),
+            });
+        },
+    });
+
+    return { data: data?.data, ...rest };
+}
+
+/**
+ * Delete a version
+ */
+export function useDeleteVersion(projectId: string) {
+    const queryClient = useQueryClient();
+
+    const { data, ...rest } = useMutation<
+        ApiResponse<{ deleted: boolean; versionNumber: number }>,
+        Error,
+        string
+    >({
+        mutationFn: (versionId) =>
+            versionsService.remove(projectId, versionId),
+        onSuccess: () => {
+            queryClient.invalidateQueries({
+                queryKey: VersionsQueryKeys.list(projectId),
+            });
+        },
+    });
+
+    return { data: data?.data, ...rest };
+}
+
+/**
+ * Compare two versions
+ */
+export function useCompareVersions(
+    projectId: string,
+    versionAId: string,
+    versionBId: string,
+) {
+    const { data, ...rest } = useQuery<ApiResponse<VersionComparison>>({
+        queryKey: VersionsQueryKeys.compare(projectId, versionAId, versionBId),
+        queryFn: () =>
+            versionsService.compare(projectId, versionAId, versionBId),
+        enabled: !!projectId && !!versionAId && !!versionBId,
+    });
+
+    return { data: data?.data, ...rest };
+}
diff --git a/src/types/skriptai.ts b/src/types/skriptai.ts
index 4af2128..19b2b39 100644
--- a/src/types/skriptai.ts
+++ b/src/types/skriptai.ts
@@ -65,6 +65,8 @@ export type SourceType =
     | 'book'
     | 'document';
 
+export type ProjectStatus = 'DRAFT' | 'RESEARCHING' | 'SCRIPTING' | 'ANALYZING' | 'COMPLETED';
+
 export type CharacterRole =
     | 'Protagonist'
     | 'Antagonist'
@@ -87,6 +89,8 @@ export interface ScriptProject {
     logline?: string;
     highConcept?: string;
     includeInterviews: boolean;
+    status: ProjectStatus;
+    currentVersionNumber: number;
     seoTitle?: string;
     seoDescription?: string;
     seoTags: string[];
@@ -269,6 +273,7 @@ export interface ProjectListItem {
     topic: string;
     contentType: string;
     language: string;
+    status?: ProjectStatus;
     createdAt: string;
     updatedAt: string;
     _count: {
@@ -276,3 +281,41 @@ export interface ProjectListItem {
         sources: number;
     };
 }
+
+// Version History Types
+export interface ScriptVersionSummary {
+    id: string;
+    versionNumber: number;
+    label?: string;
+    generatedBy: 'AI' | 'USER' | 'AUTO_SAVE';
+    segmentCount: number;
+    totalWords: number;
+    changeNote?: string;
+    createdAt: string;
+}
+
+export interface ScriptVersion extends ScriptVersionSummary {
+    projectId: string;
+    snapshotData: any[];
+    seoSnapshot?: {
+        seoTitle?: string;
+        seoDescription?: string;
+        seoTags?: string[];
+        thumbnailIdeas?: string[];
+    };
+}
+
+export interface VersionDiff {
+    index: number;
+    type: 'added' | 'removed' | 'modified';
+    segmentType?: string;
+    narratorScript?: { before: string | null; after: string | null };
+    visualDescription?: { before: string | null; after: string | null };
+}
+
+export interface VersionComparison {
+    versionA: { id: string; versionNumber: number; label?: string; createdAt: string };
+    versionB: { id: string; versionNumber: number; label?: string; createdAt: string };
+    totalDiffs: number;
+    diffs: VersionDiff[];
+}