feat: add EditEventScreen with calendar and chat mode support

Add a unified event editor that works in two modes:
- Calendar mode: Create/edit events directly via EventService API
- Chat mode: Edit AI-proposed events before confirming them

The chat mode allows users to modify proposed events (title, time,
recurrence) and persists changes both locally and to the server.

New components: DateTimePicker, ScrollableDropdown, useDropdownPosition
New API: PUT /api/chat/messages/:messageId/proposal

apps/server/src/services/ChatService.ts

@@ -41,7 +41,6 @@ const staticResponses: TestResponse[] = [
           startTime: getDay("Wednesday", 1, 18, 0),
           endTime: getDay("Wednesday", 1, 19, 30),
           description: "Wöchentliches Training",
-          isRecurring: true,
           recurrenceRule: "FREQ=WEEKLY;BYDAY=WE",
         },
       },
@@ -158,7 +157,6 @@ const staticResponses: TestResponse[] = [
           startTime: getDay("Monday", 1, 7, 0),
           endTime: getDay("Monday", 1, 8, 0),
           description: "Morgen-Yoga",
-          isRecurring: true,
           recurrenceRule: "FREQ=WEEKLY;BYDAY=MO,WE,FR",
         },
       },
@@ -170,7 +168,6 @@ const staticResponses: TestResponse[] = [
           startTime: getDay("Tuesday", 1, 18, 0),
           endTime: getDay("Tuesday", 1, 19, 0),
           description: "Abendlauf im Park",
-          isRecurring: true,
           recurrenceRule: "FREQ=WEEKLY;BYDAY=TU,TH",
         },
       },
@@ -215,7 +212,6 @@ const staticResponses: TestResponse[] = [
           title: "Badezimmer putzen",
           startTime: getDay("Saturday", 1, 10, 0),
           endTime: getDay("Saturday", 1, 11, 0),
-          isRecurring: true,
           recurrenceRule: "FREQ=WEEKLY;BYDAY=SA",
         },
       },
@@ -255,7 +251,6 @@ const staticResponses: TestResponse[] = [
           title: "Mamas Geburtstag",
           startTime: getDay("Thursday", 2, 0, 0),
           endTime: getDay("Thursday", 2, 23, 59),
-          isRecurring: true,
           recurrenceRule: "FREQ=YEARLY",
         },
       },
@@ -273,7 +268,6 @@ const staticResponses: TestResponse[] = [
           title: "Fitnessstudio Probetraining",
           startTime: getDay("Tuesday", 1, 18, 0),
           endTime: getDay("Tuesday", 1, 19, 30),
-          isRecurring: true,
           recurrenceRule: "FREQ=WEEKLY;BYDAY=TU;COUNT=8",
         },
       },
@@ -327,7 +321,6 @@ const staticResponses: TestResponse[] = [
           title: "Spanischkurs VHS",
           startTime: getDay("Thursday", 1, 19, 0),
           endTime: getDay("Thursday", 1, 20, 30),
-          isRecurring: true,
           recurrenceRule: "FREQ=WEEKLY;BYDAY=TH,SA;COUNT=8",
         },
       },
@@ -373,7 +366,6 @@ async function getTestResponse(
                 exceptionDate.getTime() + 90 * 60 * 1000,
               ), // +90 min
               description: sportEvent.description,
-              isRecurring: sportEvent.isRecurring,
               recurrenceRule: sportEvent.recurrenceRule,
               exceptionDates: sportEvent.exceptionDates,
             },
@@ -412,7 +404,6 @@ async function getTestResponse(
               startTime: sportEvent.startTime,
               endTime: sportEvent.endTime,
               description: sportEvent.description,
-              isRecurring: sportEvent.isRecurring,
               recurrenceRule: newRule,
               exceptionDates: sportEvent.exceptionDates,
             },
@@ -452,7 +443,6 @@ async function getTestResponse(
                 exceptionDate.getTime() + 90 * 60 * 1000,
               ), // +90 min
               description: sportEvent.description,
-              isRecurring: sportEvent.isRecurring,
               recurrenceRule: sportEvent.recurrenceRule,
               exceptionDates: sportEvent.exceptionDates,
             },
@@ -488,7 +478,6 @@ async function getTestResponse(
               startTime: jensEvent.startTime,
               endTime: jensEvent.endTime,
               description: jensEvent.description,
-              isRecurring: jensEvent.isRecurring,
             },
           },
         ],
@@ -718,4 +707,12 @@ export class ChatService {
 
     return this.chatRepo.getMessages(conversationId, options);
   }
+
+  async updateProposalEvent(
+    messageId: string,
+    proposalId: string,
+    event: CreateEventDTO,
+  ): Promise<ChatMessage | null> {
+    return this.chatRepo.updateProposalEvent(messageId, proposalId, event);
+  }
 }

apps/server/src/services/interfaces/ChatRepository.ts

@@ -2,6 +2,7 @@ import {
   ChatMessage,
   Conversation,
   CreateMessageDTO,
+  CreateEventDTO,
   GetMessagesOptions,
   UpdateMessageDTO,
 } from "@calchat/shared";
@@ -32,4 +33,10 @@ export interface ChatRepository {
     proposalId: string,
     respondedAction: "confirm" | "reject",
   ): Promise<ChatMessage | null>;
+
+  updateProposalEvent(
+    messageId: string,
+    proposalId: string,
+    event: CreateEventDTO,
+  ): Promise<ChatMessage | null>;
 }