chore: Integrate reschedule request booking audit (#26527)

## What does this PR do?

Adds audit logging for the reschedule request flow. When an organizer requests an attendee to reschedule a booking, this action is now logged to the booking audit system.

This is part of the booking audit integration effort, following the pattern established in PR #26046 (booking creation/rescheduling audit) and PR #26458 (cancellation audit).

## Changes

- Added audit logging call to `requestReschedule.handler.ts` using `BookingEventHandlerService.onRescheduleRequested()`
- Captures audit data:
  - `rescheduleReason`: The reason provided for requesting the reschedule (nullable string)
  - `rescheduledRequestedBy`: Email of the user who requested the reschedule
- Uses `makeUserActor(user.uuid)` to identify the actor performing the action
- Added required `source` parameter for action source tracking (passed as `"WEBAPP"` from tRPC router)
- Updated `RescheduleRequestedAuditActionService` schema to use simpler field structure
- Updated test helper `getTrpcHandlerData` to pass `source: "WEBAPP"` parameter

## Updates since last revision

- Changed `source` parameter from optional with default to required - tests now explicitly pass `source: "WEBAPP"` instead of relying on a default value

## Mandatory Tasks (DO NOT REMOVE)

- [x] I have self-reviewed the code (A decent size PR without self-review might be rejected).
- [x] I have updated the developer docs in /docs if this PR makes changes that would require a [documentation change](https://cal.com/docs). N/A - no documentation changes needed.
- [x] I confirm automated tests are in place that prove my fix is effective or that my feature works. N/A - follows established audit pattern with existing infrastructure tests.

## How should this be tested?

1. Log in as a user with a booking
2. Navigate to the booking and click "Request Reschedule"
3. Provide a reschedule reason and submit
4. Verify the audit log is created with the correct data (requires access to audit log storage/database)

The audit logging follows the same pattern as other booking audit integrations, so if those are working, this should work as well.

## Checklist

- [x] My code follows the style guidelines of this project
- [x] I have checked if my changes generate no new warnings

---

**Link to Devin run**: https://app.devin.ai/sessions/ae84d093c4594a5d89b88c45639a6a06
**Requested by**: @hariombalhara

## Human Review Checklist

- [ ] Verify the audit data schema matches `RescheduleRequestedAuditActionService` expectations (fields: `rescheduleReason`, `rescheduledRequestedBy`)
- [ ] Confirm the schema change from change-based fields (`{ old, new }`) to simple nullable strings is intentional
- [ ] Confirm `user.uuid` is available in the tRPC session context
- [ ] Note: API v2 does not have a reschedule request endpoint, so no API v2 changes are needed

apps/web/test/handlers/requestReschedule.test.ts

@@ -579,5 +579,6 @@ function getTrpcHandlerData({
       } as unknown as NonNullable<TrpcSessionUser>,
     },
     input: input,
+    source: "WEBAPP" as const,
   };
 }

packages/features/booking-audit/lib/actions/RescheduleRequestedAuditActionService.ts

@@ -1,8 +1,12 @@
 import { z } from "zod";
 
-import { StringChangeSchema, BooleanChangeSchema } from "../common/changeSchemas";
 import { AuditActionServiceHelper } from "./AuditActionServiceHelper";
-import type { IAuditActionService, TranslationWithParams, GetDisplayTitleParams, GetDisplayJsonParams } from "./IAuditActionService";
+import type {
+  IAuditActionService,
+  TranslationWithParams,
+  GetDisplayTitleParams,
+  GetDisplayJsonParams,
+} from "./IAuditActionService";
 
 /**
  * Reschedule Requested Audit Action Service
@@ -11,73 +15,70 @@ import type { IAuditActionService, TranslationWithParams, GetDisplayTitleParams,
 
 // Module-level because it is passed to IAuditActionService type outside the class scope
 const fieldsSchemaV1 = z.object({
-    cancellationReason: StringChangeSchema,
-    cancelledBy: StringChangeSchema,
-    rescheduled: BooleanChangeSchema.optional(),
+  rescheduleReason: z.string().nullable(),
+  rescheduledRequestedBy: z.string().nullable(),
 });
 
 export class RescheduleRequestedAuditActionService implements IAuditActionService {
-    readonly VERSION = 1;
-    public static readonly TYPE = "RESCHEDULE_REQUESTED" as const;
-    private static dataSchemaV1 = z.object({
-        version: z.literal(1),
-        fields: fieldsSchemaV1,
+  readonly VERSION = 1;
+  public static readonly TYPE = "RESCHEDULE_REQUESTED" as const;
+  private static dataSchemaV1 = z.object({
+    version: z.literal(1),
+    fields: fieldsSchemaV1,
+  });
+  private static fieldsSchemaV1 = fieldsSchemaV1;
+  public static readonly latestFieldsSchema = fieldsSchemaV1;
+  // Union of all versions
+  public static readonly storedDataSchema = RescheduleRequestedAuditActionService.dataSchemaV1;
+  // Union of all versions
+  public static readonly storedFieldsSchema = RescheduleRequestedAuditActionService.fieldsSchemaV1;
+  private helper: AuditActionServiceHelper<
+    typeof RescheduleRequestedAuditActionService.latestFieldsSchema,
+    typeof RescheduleRequestedAuditActionService.storedDataSchema
+  >;
+
+  constructor() {
+    this.helper = new AuditActionServiceHelper({
+      latestVersion: this.VERSION,
+      latestFieldsSchema: RescheduleRequestedAuditActionService.latestFieldsSchema,
+      storedDataSchema: RescheduleRequestedAuditActionService.storedDataSchema,
     });
-    private static fieldsSchemaV1 = fieldsSchemaV1;
-    public static readonly latestFieldsSchema = fieldsSchemaV1;
-    // Union of all versions
-    public static readonly storedDataSchema = RescheduleRequestedAuditActionService.dataSchemaV1;
-    // Union of all versions
-    public static readonly storedFieldsSchema = RescheduleRequestedAuditActionService.fieldsSchemaV1;
-    private helper: AuditActionServiceHelper<
-        typeof RescheduleRequestedAuditActionService.latestFieldsSchema,
-        typeof RescheduleRequestedAuditActionService.storedDataSchema
-    >;
+  }
 
-    constructor() {
-        this.helper = new AuditActionServiceHelper({
-            latestVersion: this.VERSION,
-            latestFieldsSchema: RescheduleRequestedAuditActionService.latestFieldsSchema,
-            storedDataSchema: RescheduleRequestedAuditActionService.storedDataSchema,
-        });
-    }
+  getVersionedData(fields: unknown) {
+    return this.helper.getVersionedData(fields);
+  }
 
-    getVersionedData(fields: unknown) {
-        return this.helper.getVersionedData(fields);
-    }
+  parseStored(data: unknown) {
+    return this.helper.parseStored(data);
+  }
 
-    parseStored(data: unknown) {
-        return this.helper.parseStored(data);
-    }
+  getVersion(data: unknown): number {
+    return this.helper.getVersion(data);
+  }
 
-    getVersion(data: unknown): number {
-        return this.helper.getVersion(data);
-    }
+  migrateToLatest(data: unknown) {
+    // V1-only: validate and return as-is (no migration needed)
+    const validated = fieldsSchemaV1.parse(data);
+    return { isMigrated: false, latestData: validated };
+  }
 
-    migrateToLatest(data: unknown) {
-        // V1-only: validate and return as-is (no migration needed)
-        const validated = fieldsSchemaV1.parse(data);
-        return { isMigrated: false, latestData: validated };
-    }
+  async getDisplayTitle(_: GetDisplayTitleParams): Promise<TranslationWithParams> {
+    return { key: "booking_audit_action.reschedule_requested" };
+  }
 
-    async getDisplayTitle(_: GetDisplayTitleParams): Promise<TranslationWithParams> {
-        return { key: "booking_audit_action.reschedule_requested" };
-    }
-
-    getDisplayJson({
-        storedData,
-    }: GetDisplayJsonParams): RescheduleRequestedAuditDisplayData {
-        const { fields } = this.parseStored(storedData);
-        return {
-            reason: fields.cancellationReason.new ?? null,
-            requestedBy: fields.cancelledBy.new ?? null,
-        };
-    }
+  getDisplayJson({ storedData }: GetDisplayJsonParams): RescheduleRequestedAuditDisplayData {
+    const { fields } = this.parseStored(storedData);
+    return {
+      reason: fields.rescheduleReason ?? null,
+      requestedBy: fields.rescheduledRequestedBy ?? null,
+    };
+  }
 }
 
 export type RescheduleRequestedAuditData = z.infer<typeof fieldsSchemaV1>;
 
 export type RescheduleRequestedAuditDisplayData = {
-    reason: string | null;
-    requestedBy: string | null;
+  reason: string | null;
+  requestedBy: string | null;
 };

packages/trpc/server/routers/viewer/bookings/_router.tsx

@@ -1,3 +1,5 @@
+import type { ActionSource } from "@calcom/features/booking-audit/lib/types/actionSource";
+
 import authedProcedure from "../../../procedures/authedProcedure";
 import publicProcedure from "../../../procedures/publicProcedure";
 import { router } from "../../../trpc";
@@ -30,6 +32,7 @@ export const bookingsRouter = router({
     return requestRescheduleHandler({
       ctx,
       input,
+      source: "WEBAPP"
     });
   }),
 

packages/trpc/server/routers/viewer/bookings/requestReschedule.handler.ts

@@ -5,6 +5,9 @@ import { getDelegationCredentialOrRegularCredential } from "@calcom/app-store/de
 import { getUsersCredentialsIncludeServiceAccountKey } from "@calcom/app-store/delegationCredential";
 import dayjs from "@calcom/dayjs";
 import { sendRequestRescheduleEmailAndSMS } from "@calcom/emails/email-manager";
+import { makeUserActor } from "@calcom/features/booking-audit/lib/makeActor";
+import type { ActionSource } from "@calcom/features/booking-audit/lib/types/actionSource";
+import { getBookingEventHandlerService } from "@calcom/features/bookings/di/BookingEventHandlerService.container";
 import { getCalEventResponses } from "@calcom/features/bookings/lib/getCalEventResponses";
 import { BookingRepository } from "@calcom/features/bookings/repositories/BookingRepository";
 import { deleteMeeting } from "@calcom/features/conferencing/lib/videoClient";
@@ -43,9 +46,10 @@ type RequestRescheduleOptions = {
     user: NonNullable<TrpcSessionUser>;
   };
   input: TRequestRescheduleInputSchema;
+  source: ActionSource;
 };
 const log = logger.getSubLogger({ prefix: ["requestRescheduleHandler"] });
-export const requestRescheduleHandler = async ({ ctx, input }: RequestRescheduleOptions) => {
+export const requestRescheduleHandler = async ({ ctx, input, source }: RequestRescheduleOptions) => {
   const { user } = ctx;
   const { bookingUid, rescheduleReason: cancellationReason } = input;
   log.debug("Started", safeStringify({ bookingUid }));
@@ -305,4 +309,16 @@ export const requestRescheduleHandler = async ({ ctx, input }: RequestReschedule
     })
   );
   await Promise.all(promises);
+
+  const bookingEventHandlerService = getBookingEventHandlerService();
+  await bookingEventHandlerService.onRescheduleRequested({
+    bookingUid: bookingToReschedule.uid,
+    actor: makeUserActor(user.uuid),
+    organizationId: orgId ?? null,
+    source,
+    auditData: {
+      rescheduleReason: cancellationReason ?? null,
+      rescheduledRequestedBy: user.email,
+    },
+  });
 };