hexclave · BilalG1 · Feb 17, 2026 · Feb 17, 2026 · Feb 17, 2026
diff --git a/...prisma/migrations/20260216000000_rename_tab_id_to_session_replay_segment_id/migration.sql b/...prisma/migrations/20260216000000_rename_tab_id_to_session_replay_segment_id/migration.sql
@@ -0,0 +1,22 @@
+ALTER TABLE "SessionRecordingChunk" RENAME COLUMN "tabId" TO "sessionReplaySegmentId";
+
+ALTER TABLE "SessionRecording" RENAME TO "SessionReplay";
+ALTER TABLE "SessionRecordingChunk" RENAME TO "SessionReplayChunk";
+ALTER TABLE "SessionReplayChunk" RENAME COLUMN "sessionRecordingId" TO "sessionReplayId";
+
+-- Rename primary key constraints
+ALTER TABLE "SessionReplay" RENAME CONSTRAINT "SessionRecording_pkey" TO "SessionReplay_pkey";
+ALTER TABLE "SessionReplayChunk" RENAME CONSTRAINT "SessionRecordingChunk_pkey" TO "SessionReplayChunk_pkey";
+
+-- Rename foreign key constraints
+ALTER TABLE "SessionReplay" RENAME CONSTRAINT "SessionRecording_tenancyId_fkey" TO "SessionReplay_tenancyId_fkey";
+ALTER TABLE "SessionReplay" RENAME CONSTRAINT "SessionRecording_tenancyId_projectUserId_fkey" TO "SessionReplay_tenancyId_projectUserId_fkey";
+ALTER TABLE "SessionReplayChunk" RENAME CONSTRAINT "SessionRecordingChunk_tenancyId_fkey" TO "SessionReplayChunk_tenancyId_fkey";
+ALTER TABLE "SessionReplayChunk" RENAME CONSTRAINT "SessionRecordingChunk_tenancyId_sessionRecordingId_fkey" TO "SessionReplayChunk_tenancyId_sessionReplayId_fkey";
+
+-- Rename indexes
+ALTER INDEX "SessionRecording_tenancyId_lastEventAt_idx" RENAME TO "SessionReplay_tenancyId_lastEventAt_idx";
+ALTER INDEX "SessionRecording_tenancyId_projectUserId_startedAt_idx" RENAME TO "SessionReplay_tenancyId_projectUserId_startedAt_idx";
+ALTER INDEX "SessionRecording_tenancyId_refreshTokenId_updatedAt_idx" RENAME TO "SessionReplay_tenancyId_refreshTokenId_updatedAt_idx";
+ALTER INDEX "SessionRecordingChunk_tenancyId_sessionRecordingId_batchId_key" RENAME TO "SessionReplayChunk_tenancyId_sessionReplayId_batchId_key";
+ALTER INDEX "SessionRecordingChunk_tenancyId_sessionRecordingId_createdA_idx" RENAME TO "SessionReplayChunk_tenancyId_sessionReplayId_createdAt_idx";
diff --git a/apps/backend/prisma/schema.prisma b/apps/backend/prisma/schema.prisma
@@ -60,8 +60,8 @@ model Tenancy {
   organizationId    String?       @db.Uuid
   hasNoOrganization BooleanTrue?
   emailOutboxes     EmailOutbox[]
-  sessionRecordings SessionRecording[]
-  sessionRecordingChunks SessionRecordingChunk[]
+  sessionReplays SessionReplay[]
+  sessionReplayChunks SessionReplayChunk[]
 
   @@unique([projectId, branchId, organizationId])
   @@unique([projectId, branchId, hasNoOrganization])
@@ -236,7 +236,7 @@ model ProjectUser {
   Project                    Project?                      @relation(fields: [projectId], references: [id])
   projectId                  String?
   userNotificationPreference UserNotificationPreference[]
-  sessionRecordings          SessionRecording[]
+  sessionReplays             SessionReplay[]
 
   @@id([tenancyId, projectUserId])
   @@unique([mirroredProjectId, mirroredBranchId, projectUserId])
@@ -280,7 +280,7 @@ model ProjectUserOAuthAccount {
   @@index([tenancyId, projectUserId])
 }
 
-model SessionRecording {
+model SessionReplay {
   id String @db.Uuid
 
   tenancyId      String @db.Uuid
@@ -296,26 +296,27 @@ model SessionRecording {
   projectUser ProjectUser @relation(fields: [tenancyId, projectUserId], references: [tenancyId, projectUserId], onDelete: Cascade)
   tenancy     Tenancy     @relation(fields: [tenancyId], references: [id], onDelete: Cascade)
 
-  chunks SessionRecordingChunk[]
+  chunks SessionReplayChunk[]
 
   @@id([tenancyId, id])
+  @@map("SessionReplay")
   @@index([tenancyId, projectUserId, startedAt])
   @@index([tenancyId, lastEventAt])
   // index by updatedAt instead of lastEventAt because event timing can be spoofed
   @@index([tenancyId, refreshTokenId, updatedAt])
 }
 
-model SessionRecordingChunk {
+model SessionReplayChunk {
   id String @id @default(uuid()) @db.Uuid
 
-  tenancyId          String @db.Uuid
-  sessionRecordingId String @db.Uuid
+  tenancyId        String @db.Uuid
+  sessionReplayId  String @db.Uuid @map("sessionReplayId")
 
   // Unique per uploaded batch for a given session id.
   batchId String @db.Uuid
 
-  // Ephemeral in-memory id generated by the client. Stored for future tab separation if needed.
-  tabId String
+  // Ephemeral in-memory id generated by the client. Used to group recording chunks into per-tab replay segments.
+  sessionReplaySegmentId String
 
   // Client-generated session id from localStorage, stored as metadata.
   browserSessionId String
@@ -329,11 +330,12 @@ model SessionRecordingChunk {
 
   createdAt DateTime @default(now())
 
-  sessionRecording SessionRecording @relation(fields: [tenancyId, sessionRecordingId], references: [tenancyId, id], onDelete: Cascade)
-  tenancy         Tenancy          @relation(fields: [tenancyId], references: [id], onDelete: Cascade)
+  sessionReplay SessionReplay @relation(fields: [tenancyId, sessionReplayId], references: [tenancyId, id], onDelete: Cascade)
+  tenancy       Tenancy       @relation(fields: [tenancyId], references: [id], onDelete: Cascade)
 
-  @@unique([tenancyId, sessionRecordingId, batchId])
-  @@index([tenancyId, sessionRecordingId, createdAt])
+  @@unique([tenancyId, sessionReplayId, batchId])
+  @@map("SessionReplayChunk")
+  @@index([tenancyId, sessionReplayId, createdAt])
 }
 
 enum ContactChannelType {

diff --git a/apps/backend/prisma/seed.ts b/apps/backend/prisma/seed.ts
@@ -1118,11 +1118,11 @@ async function seedDummyProject(options: DummyProjectSeedOptions) {
     userEmailToId,
   });
 
-  await seedDummySessionRecordings({
+  await seedDummySessionReplays({
     prisma: dummyPrisma,
     tenancyId: dummyTenancy.id,
     userEmailToId,
-    targetSessionRecordingCount: 75
+    targetSessionReplayCount: 75
   });
 
   console.log('Seeded dummy project data');
@@ -1773,43 +1773,43 @@ async function seedDummySessionActivityEvents(options: SessionActivityEventSeedO
   console.log('Finished seeding session activity events');
 }
 
-type SessionRecordingSeedOptions = {
+type SessionReplaySeedOptions = {
   prisma: PrismaClientTransaction,
   tenancyId: string,
   userEmailToId: Map<string, string>,
-  targetSessionRecordingCount?: number,
+  targetSessionReplayCount?: number,
 };
 
-async function seedDummySessionRecordings(options: SessionRecordingSeedOptions) {
+async function seedDummySessionReplays(options: SessionReplaySeedOptions) {
   const {
     prisma,
     tenancyId,
     userEmailToId,
-    targetSessionRecordingCount = 250,
+    targetSessionReplayCount = 250,
   } = options;
 
-  const existingCount = await prisma.sessionRecording.count({
+  const existingCount = await prisma.sessionReplay.count({
     where: {
       tenancyId,
     },
   });
 
-  if (existingCount >= targetSessionRecordingCount) {
-    console.log(`Dummy project already has ${existingCount} session recordings, skipping seeding`);
+  if (existingCount >= targetSessionReplayCount) {
+    console.log(`Dummy project already has ${existingCount} session replays, skipping seeding`);
     return;
   }
 
-  const toCreate = targetSessionRecordingCount - existingCount;
+  const toCreate = targetSessionReplayCount - existingCount;
   const userIds = Array.from(userEmailToId.values());
   if (userIds.length === 0) {
-    throw new Error('Cannot seed session recordings: no dummy project users exist');
+    throw new Error('Cannot seed session replays: no dummy project users exist');
   }
 
   const now = new Date();
   const twoWeeksAgo = new Date(now);
   twoWeeksAgo.setDate(twoWeeksAgo.getDate() - 14);
 
-  const seeds: Prisma.SessionRecordingCreateManyInput[] = [];
+  const seeds: Prisma.SessionReplayCreateManyInput[] = [];
   for (let i = 0; i < toCreate; i++) {
     const startedAt = new Date(
       twoWeeksAgo.getTime() + Math.random() * (now.getTime() - twoWeeksAgo.getTime()),
@@ -1828,9 +1828,9 @@ async function seedDummySessionRecordings(options: SessionRecordingSeedOptions)
     });
   }
 
-  await prisma.sessionRecording.createMany({
+  await prisma.sessionReplay.createMany({
     data: seeds,
   });
 
-  console.log(`Seeded ${toCreate} session recordings`);
+  console.log(`Seeded ${toCreate} session replays`);
 }
diff --git a/apps/backend/scripts/clickhouse-migrations.ts b/apps/backend/scripts/clickhouse-migrations.ts
@@ -16,7 +16,9 @@ export async function runClickhouseMigrations() {
   await client.exec({ query: EVENTS_VIEW_SQL });
   await client.exec({ query: USERS_TABLE_BASE_SQL });
   await client.exec({ query: USERS_VIEW_SQL });
+  await client.exec({ query: EVENTS_ADD_REPLAY_COLUMNS_SQL });
   await client.exec({ query: TOKEN_REFRESH_EVENT_ROW_FORMAT_MUTATION_SQL });
+  await client.exec({ query: BACKFILL_REFRESH_TOKEN_ID_COLUMN_SQL });
   await client.exec({ query: SIGN_UP_RULE_TRIGGER_EVENT_ROW_FORMAT_MUTATION_SQL });
   const queries = [
     "REVOKE ALL PRIVILEGES ON *.* FROM limited_user;",
@@ -177,6 +179,22 @@ ENGINE ReplacingMergeTree(updated_at)
 ORDER BY (tenancy_id, mapping_name);
 `;
 
+const EVENTS_ADD_REPLAY_COLUMNS_SQL = `
+ALTER TABLE analytics_internal.events
+  ADD COLUMN IF NOT EXISTS refresh_token_id Nullable(String) AFTER team_id,
+  ADD COLUMN IF NOT EXISTS session_replay_id Nullable(String) AFTER refresh_token_id,
+  ADD COLUMN IF NOT EXISTS session_replay_segment_id Nullable(String) AFTER session_replay_id;
+`;
+
+// Backfill refresh_token_id from data.refresh_token_id for existing $token-refresh rows
+const BACKFILL_REFRESH_TOKEN_ID_COLUMN_SQL = `
+ALTER TABLE analytics_internal.events
+UPDATE refresh_token_id = data.refresh_token_id::Nullable(String)
+WHERE event_type = '$token-refresh'
+  AND refresh_token_id IS NULL
+  AND data.refresh_token_id::Nullable(String) IS NOT NULL;
+`;
+
 const EXTERNAL_ANALYTICS_DB_SQL = `
 CREATE DATABASE IF NOT EXISTS analytics_internal;
 `;
diff --git a/...ng_id]/chunks/[chunk_id]/events/route.tsx → ...ay_id]/chunks/[chunk_id]/events/route.tsx b/...ng_id]/chunks/[chunk_id]/events/route.tsx → ...ay_id]/chunks/[chunk_id]/events/route.tsx
@@ -17,7 +17,7 @@ export const GET = createSmartRouteHandler({
       tenancy: adaptSchema.defined(),
     }).defined(),
     params: yupObject({
-      session_recording_id: yupString().defined(),
+      session_replay_id: yupString().defined(),
       chunk_id: yupString().defined(),
     }).defined(),
   }),
@@ -31,13 +31,13 @@ export const GET = createSmartRouteHandler({
   async handler({ auth, params }) {
     const prisma = await getPrismaClientForTenancy(auth.tenancy);
 
-    const sessionRecordingId = params.session_recording_id;
+    const sessionReplayId = params.session_replay_id;
     const chunkId = params.chunk_id;
 
-    const chunk = await prisma.sessionRecordingChunk.findFirst({
+    const chunk = await prisma.sessionReplayChunk.findFirst({
       where: {
         tenancyId: auth.tenancy.id,
-        sessionRecordingId,
+        sessionReplayId,
         id: chunkId,
       },
       select: {
@@ -64,20 +64,20 @@ export const GET = createSmartRouteHandler({
     try {
       parsed = JSON.parse(new TextDecoder().decode(unzipped));
     } catch (e) {
-      throw new StackAssertionError("Failed to decode session recording chunk JSON", { cause: e });
+      throw new StackAssertionError("Failed to decode session replay chunk JSON", { cause: e });
     }
 
     if (typeof parsed !== "object" || parsed === null) {
-      throw new StackAssertionError("Decoded session recording chunk is not an object");
+      throw new StackAssertionError("Decoded session replay chunk is not an object");
     }
-    if (parsed.session_recording_id !== sessionRecordingId) {
-      throw new StackAssertionError("Decoded session recording chunk session_recording_id mismatch", {
-        expected: sessionRecordingId,
-        actual: parsed.session_recording_id,
+    if (parsed.session_replay_id !== sessionReplayId) {
+      throw new StackAssertionError("Decoded session replay chunk session_replay_id mismatch", {
+        expected: sessionReplayId,
+        actual: parsed.session_replay_id,
       });
     }
     if (!Array.isArray(parsed.events)) {
-      throw new StackAssertionError("Decoded session recording chunk events is not an array");
+      throw new StackAssertionError("Decoded session replay chunk events is not an array");
     }
 
     return {

diff --git a/...s/[session_recording_id]/chunks/route.tsx → ...lays/[session_replay_id]/chunks/route.tsx b/...s/[session_recording_id]/chunks/route.tsx → ...lays/[session_replay_id]/chunks/route.tsx
@@ -15,7 +15,7 @@ export const GET = createSmartRouteHandler({
       tenancy: adaptSchema.defined(),
     }).defined(),
     params: yupObject({
-      session_recording_id: yupString().defined(),
+      session_replay_id: yupString().defined(),
     }).defined(),
     query: yupObject({
       cursor: yupString().optional(),
@@ -29,7 +29,7 @@ export const GET = createSmartRouteHandler({
       items: yupArray(yupObject({
         id: yupString().defined(),
         batch_id: yupString().defined(),
-        tab_id: yupString().nullable().defined(),
+        session_replay_segment_id: yupString().nullable().defined(),
         browser_session_id: yupString().nullable().defined(),
         event_count: yupNumber().defined(),
         byte_length: yupNumber().defined(),
@@ -45,13 +45,13 @@ export const GET = createSmartRouteHandler({
   async handler({ auth, params, query }) {
     const prisma = await getPrismaClientForTenancy(auth.tenancy);
 
-    const sessionRecordingId = params.session_recording_id;
-    const exists = await prisma.sessionRecording.findUnique({
-      where: { tenancyId_id: { tenancyId: auth.tenancy.id, id: sessionRecordingId } },
+    const sessionReplayId = params.session_replay_id;
+    const exists = await prisma.sessionReplay.findUnique({
+      where: { tenancyId_id: { tenancyId: auth.tenancy.id, id: sessionReplayId } },
       select: { id: true },
     });
     if (!exists) {
-      throw new KnownErrors.ItemNotFound(sessionRecordingId);
+      throw new KnownErrors.ItemNotFound(sessionReplayId);
     }
 
     const rawLimit = query.limit ?? String(DEFAULT_LIMIT);
@@ -61,10 +61,10 @@ export const GET = createSmartRouteHandler({
     const cursorId = query.cursor;
     let cursorPivot: { firstEventAt: Date } | null = null;
     if (cursorId) {
-      cursorPivot = await prisma.sessionRecordingChunk.findFirst({
+      cursorPivot = await prisma.sessionReplayChunk.findFirst({
         where: {
           tenancyId: auth.tenancy.id,
-          sessionRecordingId,
+          sessionReplayId,
           id: cursorId,
         },
         select: { firstEventAt: true },
@@ -74,25 +74,25 @@ export const GET = createSmartRouteHandler({
       }
     }
 
-    const cursorWhere: Prisma.SessionRecordingChunkWhereInput = cursorId && cursorPivot ? {
+    const cursorWhere: Prisma.SessionReplayChunkWhereInput = cursorId && cursorPivot ? {
       OR: [
         { firstEventAt: { gt: cursorPivot.firstEventAt } },
         { AND: [{ firstEventAt: { equals: cursorPivot.firstEventAt } }, { id: { gt: cursorId } }] },
       ],
     } : {};
 
-    const chunks = await prisma.sessionRecordingChunk.findMany({
+    const chunks = await prisma.sessionReplayChunk.findMany({
       where: {
         tenancyId: auth.tenancy.id,
-        sessionRecordingId,
+        sessionReplayId,
         ...cursorWhere,
       },
       orderBy: [{ firstEventAt: "asc" }, { id: "asc" }],
       take: limit + 1,
       select: {
         id: true,
         batchId: true,
-        tabId: true,
+        sessionReplaySegmentId: true,
         browserSessionId: true,
         eventCount: true,
         byteLength: true,
@@ -113,7 +113,7 @@ export const GET = createSmartRouteHandler({
         items: page.map((c) => ({
           id: c.id,
           batch_id: c.batchId,
-          tab_id: c.tabId,
+          session_replay_segment_id: c.sessionReplaySegmentId,
           browser_session_id: c.browserSessionId,
           event_count: c.eventCount,
           byte_length: c.byteLength,