Update readme

backend/README.md

@@ -16,10 +16,14 @@ backend/
   migrations/          # SQL migrations
   src/
     auth.rs            # NIP-98 verification helper
+    billing.rs         # Billing loop + invoice generation
     config.rs          # Env-based configuration
     db.rs              # SQLite pool + migrations
     main.rs            # Axum server entrypoint
     models.rs          # Data models
+    notifications.rs   # NIP-17 DM sender + relay discovery
+    platform.rs        # Startup kind 0/10050 publishing
+    provisioning.rs    # Zooid provisioning worker
     repo.rs            # Data access layer
 ```
 
@@ -39,6 +43,7 @@ Environment variables:
 | `NOSTR_INDEXER_RELAYS` | Comma-separated relays to fetch kind `10050` DM relays | _required for notifications_ |
 | `PLATFORM_NAME` | Platform display name for kind `0` metadata | _optional_ |
 | `PLATFORM_DESCRIPTION` | Platform description for kind `0` metadata | _optional_ |
+| `PLATFORM_PICTURE` | Platform picture URL for kind `0` metadata | _optional_ |
 | `PLATFORM_MESSAGING_RELAYS` | Comma-separated relays published in kind `10050` | _optional_ |
 
 The database directory is created automatically if it doesn’t exist.
@@ -85,6 +90,12 @@ The backend runs an in-process billing loop that:
 - Sends NIP-17 DMs with invoices when recurring is off
 - Sends NIP-17 DMs on successful payment when recurring is on
 
+NIP-17 relay discovery:
+
+- Uses `NOSTR_INDEXER_RELAYS` to fetch kind `10050` for each tenant
+- Cached for a short period
+- If no relays are found, no DM is sent
+
 On startup, the backend publishes:
 
 - Kind `0` metadata (name/description)
@@ -114,7 +125,3 @@ Admin routes (all require NIP-98 auth; pubkey must be in `HOSTING_ADMIN_PUBKEYS`
 - `GET /admin/relays/:id` — get relay
 - `PUT /admin/relays/:id` — update relay
 - `DELETE /admin/relays/:id` — deactivate relay
-
-## Next Steps
-
-- Add invoice generation and billing jobs

backend/src/config.rs

@@ -13,6 +13,7 @@ pub struct Config {
     pub indexer_relays: Vec<String>,
     pub platform_name: String,
     pub platform_description: String,
+    pub platform_picture: String,
     pub platform_messaging_relays: Vec<String>,
 }
 
@@ -45,6 +46,7 @@ impl Config {
             .collect::<Vec<_>>();
         let platform_name = env::var("PLATFORM_NAME").unwrap_or_default();
         let platform_description = env::var("PLATFORM_DESCRIPTION").unwrap_or_default();
+        let platform_picture = env::var("PLATFORM_PICTURE").unwrap_or_default();
         let platform_messaging_relays = env::var("PLATFORM_MESSAGING_RELAYS")
             .unwrap_or_default()
             .split(',')
@@ -64,6 +66,7 @@ impl Config {
             indexer_relays,
             platform_name,
             platform_description,
+            platform_picture,
             platform_messaging_relays,
         }
     }

backend/src/main.rs

@@ -42,6 +42,7 @@ async fn main() -> Result<()> {
         &config.indexer_relays,
         &config.platform_name,
         &config.platform_description,
+        &config.platform_picture,
         &config.platform_messaging_relays,
     )
     .await?;

backend/src/platform.rs

@@ -6,6 +6,7 @@ pub async fn publish_platform_identity(
     indexer_relays: &[String],
     name: &str,
     description: &str,
+    picture: &str,
     messaging_relays: &[String],
 ) -> Result<()> {
     if indexer_relays.is_empty() {
@@ -32,6 +33,9 @@ pub async fn publish_platform_identity(
     if !description.is_empty() {
         metadata = metadata.about(description);
     }
+    if !picture.is_empty() {
+        metadata = metadata.picture(Url::parse(picture)?);
+    }
 
     let metadata_builder = EventBuilder::metadata(&metadata);
     client.send_event_builder(metadata_builder).await?;