accept all UserGraspList for better discovery

5 files changed, 25 insertions, 3 deletions

diff --git a/README.md b/README.md
index ec1584c..3cc1adf 100644
--- a/README.md
+++ b/README.md
@@ -134,7 +134,11 @@ This a useful feature of other git servers.
 
 ### Store all user grasp lists (for better grasp discovery)
 
-do this. should we also accept (and weekly sync) 10002 and 0 for all authors of accepted events?
+✅ **Implemented**: Kind 10317 (User Grasp List) events are now accepted and synced from all relays for better GRASP repository discovery.
+
+**Future enhancement**: We aspire to also accept and weekly sync kind 10002 (user relay lists) and kind 0 (user metadata) events, but only for authors of accepted events. This would require an additional state-driven layer 2 filter (see Roadmap in GRASP-02 Proactive Sync documentation).
+
+**Future enhancement**: should we periodically scan relays in UserGraspLists to check for announcements that list our relay?
 
 ## Technology Stack
 
diff --git a/src/nostr/builder.rs b/src/nostr/builder.rs
index c9bd1e1..84d8ab4 100644
--- a/src/nostr/builder.rs
+++ b/src/nostr/builder.rs
@@ -13,7 +13,7 @@ use nostr_relay_builder::prelude::*;
 use crate::config::{Config, DatabaseBackend};
 use crate::nostr::events::{
     RepositoryAnnouncement, RepositoryState, KIND_PR, KIND_PR_UPDATE, KIND_REPOSITORY_ANNOUNCEMENT,
-    KIND_REPOSITORY_STATE,
+    KIND_REPOSITORY_STATE, KIND_USER_GRASP_LIST,
 };
 use crate::nostr::policy::{
     AnnouncementPolicy, AnnouncementResult, PolicyContext, PrEventPolicy, ReferenceResult,
@@ -257,6 +257,16 @@ impl WritePolicy for Nip34WritePolicy {
                 KIND_REPOSITORY_ANNOUNCEMENT => self.handle_announcement(event).await,
                 KIND_REPOSITORY_STATE => self.handle_state(event).await,
                 KIND_PR | KIND_PR_UPDATE => self.handle_pr_event(event).await,
+                KIND_USER_GRASP_LIST => {
+                    // Accept all kind 10317 (User Grasp List) events
+                    // for better GRASP repository discovery
+                    tracing::debug!(
+                        event_id = %event.id.to_bech32().unwrap_or_else(|_| event.id.to_hex()),
+                        author = %event.pubkey.to_hex(),
+                        "Accepted kind 10317 user grasp list"
+                    );
+                    PolicyResult::Accept
+                }
                 _ => self.handle_related_event(event, "Event").await,
             }
         })
diff --git a/src/nostr/events.rs b/src/nostr/events.rs
index 050bfdd..1fcb75e 100644
--- a/src/nostr/events.rs
+++ b/src/nostr/events.rs
@@ -21,6 +21,9 @@ pub const KIND_PR: u16 = 1618;
 /// NIP-34 Pull Request Update (kind 1619) - has `c` tag for commit
 pub const KIND_PR_UPDATE: u16 = 1619;
 
+/// User Grasp List (kind 10317) - user's personal list of GRASP repositories
+pub const KIND_USER_GRASP_LIST: u16 = 10317;
+
 /// Repository announcement details extracted from NIP-34 event
 #[derive(Debug, Clone)]
 pub struct RepositoryAnnouncement {
diff --git a/src/sync/filters.rs b/src/sync/filters.rs
index 963fa02..dddc49c 100644
--- a/src/sync/filters.rs
+++ b/src/sync/filters.rs
@@ -13,14 +13,16 @@ use std::collections::HashSet;
 
 use nostr_sdk::prelude::*;
 
-/// Layer 1: Announcements filter (kinds 30617 + 30618)
+/// Layer 1: Announcements filter (kinds 30617 + 30618 + 10317)
 ///
 /// Subscribed ONCE on connect - NOT included in consolidation rebuilds.
 /// Note: 30618 is ONLY synced from remote relays, not self-subscribed.
+/// Note: 10317 (User Grasp List) is synced for better GRASP discovery.
 pub fn build_announcement_filter(since: Option<Timestamp>) -> Filter {
     let filter = Filter::new().kinds([
         Kind::Custom(30617), // Repository announcements
         Kind::Custom(30618), // Maintainer lists
+        Kind::Custom(10317), // User Grasp List
     ]);
 
     match since {
diff --git a/src/sync/self_subscriber.rs b/src/sync/self_subscriber.rs
index 9643fc0..09e3b56 100644
--- a/src/sync/self_subscriber.rs
+++ b/src/sync/self_subscriber.rs
@@ -285,6 +285,7 @@ impl SelfSubscriber {
 
         // Subscribe to announcement and root event kinds
         // Per v4 spec: 30617, 1617, 1618, 1621 (NOT 30618)
+        // Plus kind 10317 (User Grasp List) for GRASP discovery
         // Check if we have a last_connected time for reconnect filtering
         let filter = if let Some(last) = self.last_connected {
             // Quick reconnect - use since filter (15 min buffer)
@@ -299,6 +300,7 @@ impl SelfSubscriber {
                     Kind::Custom(1617),  // Patches
                     Kind::Custom(1621),  // Issues
                     Kind::Custom(1618),  // Pull Requests
+                    Kind::Custom(10317), // User Grasp List
                 ])
                 .since(since)
         } else {
@@ -308,6 +310,7 @@ impl SelfSubscriber {
                 Kind::Custom(1617),  // Patches
                 Kind::Custom(1621),  // Issues
                 Kind::Custom(1618),  // Pull Requests
+                Kind::Custom(10317), // User Grasp List
             ])
         };