Add guest document SSE stream

src/main/kotlin/com/android/trisolarisserver/controller/GuestDocuments.kt

@@ -3,6 +3,7 @@ package com.android.trisolarisserver.controller
 import com.android.trisolarisserver.component.DocumentStorage
 import com.android.trisolarisserver.component.DocumentTokenService
 import com.android.trisolarisserver.component.ExtractionQueue
+import com.android.trisolarisserver.component.GuestDocumentEvents
 import com.android.trisolarisserver.component.LlamaClient
 import com.android.trisolarisserver.component.PropertyAccess
 import com.android.trisolarisserver.db.repo.BookingRepo
@@ -42,6 +43,7 @@ class GuestDocuments(
     private val storage: DocumentStorage,
     private val tokenService: DocumentTokenService,
     private val extractionQueue: ExtractionQueue,
+    private val guestDocumentEvents: GuestDocumentEvents,
     private val llamaClient: LlamaClient,
     private val objectMapper: ObjectMapper,
     @org.springframework.beans.factory.annotation.Value("\${storage.documents.publicBaseUrl}")
@@ -107,6 +109,7 @@ class GuestDocuments(
         )
         val saved = guestDocumentRepo.save(document)
         runExtraction(saved.id!!, propertyId, guestId)
+        guestDocumentEvents.emit(propertyId, guestId)
         return saved.toResponse(objectMapper)
     }
 
@@ -123,6 +126,16 @@ class GuestDocuments(
             .map { it.toResponse(objectMapper) }
     }
 
+    @GetMapping("/stream")
+    fun streamDocuments(
+        @PathVariable propertyId: UUID,
+        @PathVariable guestId: UUID,
+        @AuthenticationPrincipal principal: MyPrincipal?
+    ): org.springframework.web.servlet.mvc.method.annotation.SseEmitter {
+        requireRole(propertyAccess, propertyId, principal, Role.ADMIN, Role.MANAGER)
+        return guestDocumentEvents.subscribe(propertyId, guestId)
+    }
+
     @GetMapping("/{documentId}/file")
     fun downloadDocument(
         @PathVariable propertyId: UUID,
@@ -183,6 +196,7 @@ class GuestDocuments(
             throw ResponseStatusException(HttpStatus.INTERNAL_SERVER_ERROR, "Failed to delete file")
         }
         guestDocumentRepo.delete(document)
+        guestDocumentEvents.emit(propertyId, guestId)
     }
 
     private fun runExtraction(documentId: UUID, propertyId: UUID, guestId: UUID) {
@@ -243,6 +257,7 @@ class GuestDocuments(
                 document.extractedData = objectMapper.writeValueAsString(results)
                 document.extractedAt = OffsetDateTime.now()
                 guestDocumentRepo.save(document)
+                guestDocumentEvents.emit(propertyId, guestId)
             } catch (_: Exception) {
                 // Keep upload successful even if AI extraction fails.
             }