chore(base): delete nostr-metadata-service + retire webapp-side kind-0 broadcast paths

Lnbits's cascade now publishes kind-0 user metadata server-side on
account creation AND on every PATCH /api/v1/auth (aiolabs/lnbits commit
869f67c3 folded into PR #26, deployed to aio-demo via server-deploy
e2eed9c). The webapp no longer needs its own kind-0 publish surface.

Changes:
- Delete src/modules/base/nostr/nostr-metadata-service.ts (162 lines).
  Server now owns kind-0 lifecycle via NostrSigner.sign_event.
- Delete src/modules/base/composables/useNostrMetadata.ts (had zero
  callers; was just a thin wrapper around the deleted service).
- Remove NOSTR_METADATA_SERVICE token from di-container.ts.
- Remove all NostrMetadataService imports / instantiations /
  registrations / dispose calls from src/modules/base/index.ts.
- src/modules/base/auth/auth-service.ts:
  - Drop the broadcastNostrMetadata() helper entirely.
  - Drop its callers in login() (was line 118 pre-edit) and register()
    (was line 142 pre-edit) — both flagged for removal by lnbits in the
    01:45Z coordination handoff. Login-time republish was always
    redundant for kind-0 (replaceable event); register-time is covered
    by lnbits's create_user_account -> _publish_nostr_metadata_event
    path.
  - Drop the auto-broadcast in updateProfile() too — covered by the
    PATCH /api/v1/auth handler's _publish_nostr_metadata_event call
    per the gap-fill commit.
  - Leave the prvkey/pubkey preservation in updateProfile() in place
    for now; the prvkey field removal is the atomic phase-1 final PR
    per design doc Q1.2 Option (b).
- src/modules/base/components/ProfileSettings.vue:
  - Remove the "Broadcast to Nostr" button + isBroadcasting state +
    Radio icon + broadcastMetadata() handler. Manual re-broadcast was
    a local-testing safety net for relay resets that's no longer
    needed once the server publishes automatically on profile save.
  - Simplify the post-save toast to a generic "Profile updated!".
  - Update the helper text accordingly.

This is webapp's bucket-A leg per aiolabs/lnbits#9 phase-1 plan.

Refs:
- log:2026-05-29T01:45Z (lnbits handoff identifying the auth-service
  line numbers to drop)
- ~/dev/coordination/webapp-design-questions.md Q2.3 (decision context)
- aiolabs/lnbits PR #26 commit 869f67c3 (server-side kind-0 publish)
- aiolabs/lnbits dev tip 861f427c, deployed to aio-demo

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/core/di-container.ts

@@ -144,9 +144,6 @@ export const SERVICE_TOKENS = {
   SUBMISSION_SERVICE: Symbol('submissionService'),
   LINK_PREVIEW_SERVICE: Symbol('linkPreviewService'),
 
-  // Nostr metadata services
-  NOSTR_METADATA_SERVICE: Symbol('nostrMetadataService'),
-
   // Nostr transport (kind-21000 RPC over relays — LNbits backend)
   NOSTR_TRANSPORT_SERVICE: Symbol('nostrTransportService'),
 

src/modules/base/auth/auth-service.ts

@@ -2,9 +2,7 @@
 import { ref, computed } from 'vue'
 import { BaseService } from '@/core/base/BaseService'
 import { eventBus } from '@/core/event-bus'
-import { injectService, SERVICE_TOKENS } from '@/core/di-container'
 import type { LoginCredentials, RegisterData, User } from '@/lib/api/lnbits'
-import type { NostrMetadataService } from '../nostr/nostr-metadata-service'
 import { getPendingAuthToken, removePendingAuthToken } from '@/lib/config/lnbits'
 
 export class AuthService extends BaseService {
@@ -114,9 +112,6 @@ export class AuthService extends BaseService {
 
       eventBus.emit('auth:login', { user: userData }, 'auth-service')
 
-      // Auto-broadcast Nostr metadata on login
-      this.broadcastNostrMetadata()
-
     } catch (error) {
       const err = this.handleError(error, 'login')
       eventBus.emit('auth:login-failed', { error: err }, 'auth-service')
@@ -138,9 +133,6 @@ export class AuthService extends BaseService {
 
       eventBus.emit('auth:login', { user: userData }, 'auth-service')
 
-      // Auto-broadcast Nostr metadata on registration
-      this.broadcastNostrMetadata()
-
     } catch (error) {
       const err = this.handleError(error, 'register')
       eventBus.emit('auth:login-failed', { error: err }, 'auth-service')
@@ -195,10 +187,9 @@ export class AuthService extends BaseService {
         prvkey: this.user.value?.prvkey || updatedUser.prvkey
       }
 
-      // Auto-broadcast Nostr metadata when profile is updated
+      // Kind-0 metadata is published server-side by lnbits's PATCH /auth handler
-      // Note: ProfileSettings component will also manually broadcast,
+      // (aiolabs/lnbits commit 869f67c3) once the cascade is deployed. The webapp
-      // but this ensures metadata stays in sync even if updated elsewhere
+      // no longer maintains its own broadcast path.
-      this.broadcastNostrMetadata()
 
     } catch (error) {
       const err = this.handleError(error, 'updateProfile')
@@ -208,26 +199,6 @@ export class AuthService extends BaseService {
     }
   }
 
-  /**
-   * Broadcast user metadata to Nostr relays (NIP-01 kind 0)
-   * Called automatically on login, registration, and profile updates
-   */
-  private async broadcastNostrMetadata(): Promise<void> {
-    try {
-      const metadataService = injectService<NostrMetadataService>(SERVICE_TOKENS.NOSTR_METADATA_SERVICE)
-      if (metadataService && this.user.value?.pubkey) {
-        // Broadcast in background - don't block login/update
-        metadataService.publishMetadata().catch(error => {
-          console.warn('Failed to broadcast Nostr metadata:', error)
-          // Don't throw - this is a non-critical background operation
-        })
-      }
-    } catch (error) {
-      // If service isn't available yet, silently skip
-      console.debug('Nostr metadata service not yet available')
-    }
-  }
-
   /**
    * Cleanup when service is disposed
    */

src/modules/base/components/ProfileSettings.vue

@@ -122,32 +122,17 @@
       </div>
 
       <!-- Action Buttons -->
-      <div class="flex flex-col sm:flex-row gap-3">
+      <Button
-        <Button
+        type="submit"
-          type="submit"
+        :disabled="isUpdating || !isFormValid"
-          :disabled="isUpdating || !isFormValid"
+        class="w-full"
-          class="flex-1"
+      >
-        >
+        <span v-if="isUpdating">Updating...</span>
-          <span v-if="isUpdating">Updating...</span>
+        <span v-else>Update Profile</span>
-          <span v-else>Update Profile</span>
+      </Button>
-        </Button>
-
-        <Button
-          type="button"
-          variant="outline"
-          :disabled="isBroadcasting"
-          @click="broadcastMetadata"
-          class="flex-1"
-        >
-          <Radio class="mr-2 h-4 w-4" :class="{ 'animate-pulse': isBroadcasting }" />
-          <span v-if="isBroadcasting">Broadcasting...</span>
-          <span v-else>Broadcast to Nostr</span>
-        </Button>
-      </div>
 
       <p class="text-xs text-muted-foreground">
-        Your profile is automatically broadcast to Nostr when you update it or log in.
+        Your profile is broadcast to Nostr automatically when you save changes.
-        Use the "Broadcast to Nostr" button to manually re-broadcast your profile.
       </p>
     </form>
 
@@ -189,7 +174,7 @@ import * as z from 'zod'
 import { Button } from '@/components/ui/button'
 import { Input } from '@/components/ui/input'
 import { Separator } from '@/components/ui/separator'
-import { User, Zap, Hash, Radio } from 'lucide-vue-next'
+import { User, Zap, Hash } from 'lucide-vue-next'
 import {
   FormControl,
   FormDescription,
@@ -215,19 +200,16 @@ import { useAuth } from '@/composables/useAuthService'
 import { useRouter } from 'vue-router'
 import { injectService, SERVICE_TOKENS } from '@/core/di-container'
 import type { ImageUploadService } from '../services/ImageUploadService'
-import type { NostrMetadataService } from '../nostr/nostr-metadata-service'
 import { useToast } from '@/core/composables/useToast'
 
 // Services
 const { user, updateProfile, logout } = useAuth()
 const router = useRouter()
 const imageService = injectService<ImageUploadService>(SERVICE_TOKENS.IMAGE_UPLOAD_SERVICE)
-const metadataService = injectService<NostrMetadataService>(SERVICE_TOKENS.NOSTR_METADATA_SERVICE)
 const toast = useToast()
 
 // Local state
 const isUpdating = ref(false)
-const isBroadcasting = ref(false)
 const updateError = ref<string | null>(null)
 const updateSuccess = ref(false)
 const uploadedPicture = ref<any[]>([])
@@ -323,18 +305,12 @@ const updateUserProfile = async (formData: any) => {
       }
     }
 
-    // Update profile via AuthService (which updates LNbits)
+    // Update profile via AuthService (which updates LNbits).
+    // Kind-0 metadata publishing happens server-side as part of the
+    // PATCH /api/v1/auth handler (aiolabs/lnbits 869f67c3).
     await updateProfile(updateData)
 
-    // Broadcast to Nostr automatically
+    toast.success('Profile updated!')
-    try {
-      await metadataService.publishMetadata()
-      toast.success('Profile updated and broadcast to Nostr!')
-    } catch (nostrError) {
-      console.error('Failed to broadcast to Nostr:', nostrError)
-      toast.warning('Profile updated, but failed to broadcast to Nostr')
-    }
-
     updateSuccess.value = true
 
     // Clear success message after 3 seconds
@@ -352,22 +328,6 @@ const updateUserProfile = async (formData: any) => {
   }
 }
 
-// Manually broadcast metadata to Nostr
-const broadcastMetadata = async () => {
-  isBroadcasting.value = true
-
-  try {
-    const result = await metadataService.publishMetadata()
-    toast.success(`Profile broadcast to ${result.success}/${result.total} relays!`)
-  } catch (error) {
-    const errorMessage = error instanceof Error ? error.message : 'Failed to broadcast metadata'
-    console.error('Error broadcasting metadata:', error)
-    toast.error(`Failed to broadcast: ${errorMessage}`)
-  } finally {
-    isBroadcasting.value = false
-  }
-}
-
 // Log out + redirect to /login on this app's origin.
 const onLogout = async () => {
   try {

src/modules/base/composables/useNostrMetadata.ts

@@ -1,39 +0,0 @@
-import { injectService, SERVICE_TOKENS } from '@/core/di-container'
-import type { NostrMetadataService, NostrMetadata } from '../nostr/nostr-metadata-service'
-
-/**
- * Composable for accessing Nostr metadata service
- *
- * @example
- * ```ts
- * const { publishMetadata, getMetadata } = useNostrMetadata()
- *
- * // Get current metadata
- * const metadata = getMetadata()
- *
- * // Publish metadata to Nostr relays
- * await publishMetadata()
- * ```
- */
-export function useNostrMetadata() {
-  const metadataService = injectService<NostrMetadataService>(SERVICE_TOKENS.NOSTR_METADATA_SERVICE)
-
-  /**
-   * Publish user metadata to Nostr relays (NIP-01 kind 0)
-   */
-  const publishMetadata = async (): Promise<{ success: number; total: number }> => {
-    return await metadataService.publishMetadata()
-  }
-
-  /**
-   * Get current user's Nostr metadata
-   */
-  const getMetadata = (): NostrMetadata => {
-    return metadataService.getMetadata()
-  }
-
-  return {
-    publishMetadata,
-    getMetadata
-  }
-}

src/modules/base/index.ts

@@ -2,7 +2,6 @@ import type { App } from 'vue'
 import type { ModulePlugin } from '@/core/types'
 import { container, SERVICE_TOKENS } from '@/core/di-container'
 import { relayHub } from './nostr/relay-hub'
-import { NostrMetadataService } from './nostr/nostr-metadata-service'
 import { ProfileService } from './nostr/ProfileService'
 import { ReactionService } from './nostr/ReactionService'
 import { NostrTransportService } from './services/NostrTransportService'
@@ -30,7 +29,6 @@ import ProfileSettings from './components/ProfileSettings.vue'
 const invoiceService = new InvoiceService()
 const lnbitsAPI = new LnbitsAPI()
 const imageUploadService = new ImageUploadService()
-const nostrMetadataService = new NostrMetadataService()
 const profileService = new ProfileService()
 const reactionService = new ReactionService()
 const nostrTransportService = new NostrTransportService()
@@ -48,7 +46,6 @@ export const baseModule: ModulePlugin = {
 
     // Register core Nostr services
     container.provide(SERVICE_TOKENS.RELAY_HUB, relayHub)
-    container.provide(SERVICE_TOKENS.NOSTR_METADATA_SERVICE, nostrMetadataService)
 
     // Register auth service
     container.provide(SERVICE_TOKENS.AUTH_SERVICE, auth)
@@ -113,10 +110,6 @@ export const baseModule: ModulePlugin = {
       waitForDependencies: true, // ImageUploadService depends on ToastService
       maxRetries: 3
     })
-    await nostrMetadataService.initialize({
-      waitForDependencies: true, // NostrMetadataService depends on AuthService and RelayHub
-      maxRetries: 3
-    })
     await profileService.initialize({
       waitForDependencies: true, // ProfileService depends on RelayHub
       maxRetries: 3
@@ -145,7 +138,6 @@ export const baseModule: ModulePlugin = {
     await storageService.dispose()
     await toastService.dispose()
     await imageUploadService.dispose()
-    await nostrMetadataService.dispose()
     await profileService.dispose()
     await reactionService.dispose()
     await nostrTransportService.dispose()
@@ -156,7 +148,6 @@ export const baseModule: ModulePlugin = {
     container.remove(SERVICE_TOKENS.LNBITS_API)
     container.remove(SERVICE_TOKENS.INVOICE_SERVICE)
     container.remove(SERVICE_TOKENS.IMAGE_UPLOAD_SERVICE)
-    container.remove(SERVICE_TOKENS.NOSTR_METADATA_SERVICE)
     container.remove(SERVICE_TOKENS.PROFILE_SERVICE)
     container.remove(SERVICE_TOKENS.REACTION_SERVICE)
     
@@ -173,7 +164,6 @@ export const baseModule: ModulePlugin = {
     invoiceService,
     pwaService,
     imageUploadService,
-    nostrMetadataService,
     profileService,
     reactionService
   },

src/modules/base/nostr/nostr-metadata-service.ts

@@ -1,162 +0,0 @@
-import { BaseService } from '@/core/base/BaseService'
-import { injectService, SERVICE_TOKENS } from '@/core/di-container'
-import { finalizeEvent, type EventTemplate } from 'nostr-tools'
-import type { AuthService } from '@/modules/base/auth/auth-service'
-import type { RelayHub } from '@/modules/base/nostr/relay-hub'
-
-/**
- * Nostr User Metadata (NIP-01 kind 0)
- * https://github.com/nostr-protocol/nips/blob/master/01.md
- */
-export interface NostrMetadata {
-  name?: string              // Display name (from username)
-  display_name?: string      // Alternative display name
-  about?: string             // Bio/description
-  picture?: string           // Profile picture URL
-  banner?: string            // Profile banner URL
-  nip05?: string            // NIP-05 identifier (username@domain)
-  lud16?: string            // Lightning Address (same as nip05)
-  website?: string          // Personal website
-}
-
-/**
- * Service for publishing and managing Nostr user metadata (NIP-01 kind 0)
- *
- * This service handles:
- * - Publishing user profile metadata to Nostr relays
- * - Syncing LNbits user data with Nostr profile
- * - Auto-broadcasting metadata on login and profile updates
- */
-export class NostrMetadataService extends BaseService {
-  protected readonly metadata = {
-    name: 'NostrMetadataService',
-    version: '1.0.0',
-    dependencies: ['AuthService', 'RelayHub']
-  }
-
-  protected authService: AuthService | null = null
-  protected relayHub: RelayHub | null = null
-
-  protected async onInitialize(): Promise<void> {
-    console.log('NostrMetadataService: Starting initialization...')
-
-    this.authService = injectService<AuthService>(SERVICE_TOKENS.AUTH_SERVICE)
-    this.relayHub = injectService<RelayHub>(SERVICE_TOKENS.RELAY_HUB)
-
-    if (!this.authService) {
-      throw new Error('AuthService not available')
-    }
-
-    if (!this.relayHub) {
-      throw new Error('RelayHub service not available')
-    }
-
-    console.log('NostrMetadataService: Initialization complete')
-  }
-
-  /**
-   * Build Nostr metadata from LNbits user data
-   */
-  private buildMetadata(): NostrMetadata {
-    const user = this.authService?.user.value
-    if (!user) {
-      throw new Error('No authenticated user')
-    }
-
-    const lightningDomain = import.meta.env.VITE_LIGHTNING_DOMAIN || window.location.hostname
-    const username = user.username || user.id.slice(0, 8)
-
-    const metadata: NostrMetadata = {
-      name: username,
-      nip05: `${username}@${lightningDomain}`,
-      lud16: `${username}@${lightningDomain}`
-    }
-
-    // Add optional fields from user.extra if they exist
-    if (user.extra?.display_name) {
-      metadata.display_name = user.extra.display_name
-    }
-
-    if (user.extra?.picture) {
-      metadata.picture = user.extra.picture
-    }
-
-    return metadata
-  }
-
-  /**
-   * Publish user metadata to Nostr relays (NIP-01 kind 0)
-   *
-   * This creates a replaceable event that updates the user's profile.
-   * Only the latest kind 0 event for a given pubkey is kept by relays.
-   */
-  async publishMetadata(): Promise<{ success: number; total: number }> {
-    if (!this.authService?.isAuthenticated.value) {
-      throw new Error('Must be authenticated to publish metadata')
-    }
-
-    if (!this.relayHub?.isConnected.value) {
-      throw new Error('Not connected to relays')
-    }
-
-    const user = this.authService.user.value
-    if (!user?.prvkey) {
-      throw new Error('User private key not available')
-    }
-
-    try {
-      const metadata = this.buildMetadata()
-
-      console.log('📤 Publishing Nostr metadata (kind 0):', metadata)
-
-      // Create kind 0 event (user metadata)
-      // Content is JSON-stringified metadata
-      const eventTemplate: EventTemplate = {
-        kind: 0,
-        content: JSON.stringify(metadata),
-        tags: [],
-        created_at: Math.floor(Date.now() / 1000)
-      }
-
-      // Sign the event
-      const privkeyBytes = this.hexToUint8Array(user.prvkey)
-      const signedEvent = finalizeEvent(eventTemplate, privkeyBytes)
-
-      console.log('✅ Metadata event signed:', signedEvent.id)
-      console.log('📋 Full signed event:', JSON.stringify(signedEvent, null, 2))
-
-      // Publish to all connected relays
-      const result = await this.relayHub.publishEvent(signedEvent)
-
-      console.log(`✅ Metadata published to ${result.success}/${result.total} relays`)
-
-      return result
-
-    } catch (error) {
-      console.error('Failed to publish metadata:', error)
-      throw error
-    }
-  }
-
-  /**
-   * Get current user's Nostr metadata
-   */
-  getMetadata(): NostrMetadata {
-    return this.buildMetadata()
-  }
-
-  /**
-   * Helper function to convert hex string to Uint8Array
-   */
-  private hexToUint8Array(hex: string): Uint8Array {
-    const bytes = new Uint8Array(hex.length / 2)
-    for (let i = 0; i < hex.length; i += 2) {
-      bytes[i / 2] = parseInt(hex.substr(i, 2), 16)
-    }
-    return bytes
-  }
-
-  protected async onDestroy(): Promise<void> {
-    // Cleanup if needed
-  }
-}