fix: close PI core chat review gaps

src/stores/coding-conversations.ts

@@ -338,6 +338,7 @@ export function createCodingConversationStore(
   const deps = { ...defaultDependencies(), ...dependencies };
   const snapshotLoads = new Map<string, Promise<ConversationSnapshot>>();
   const recoveryBatches = new Map<string, CodingConversationPatchBatchEvent[]>();
+  const recoveryRefreshKeys = new Map<string, string>();
   let eventSource: EventSource | null = null;
   let connectFlight: Promise<void> | null = null;
   let connectionGeneration = 0;
@@ -375,11 +376,20 @@ export function createCodingConversationStore(
     const items = [...itemsBySeq.values()].sort((left, right) => left.seq - right.seq);
     if (items.length === 0) {
       recoveryBatches.delete(conversationId);
+      recoveryRefreshKeys.delete(conversationId);
       return;
     }
     const continuous = items[0].seq === snapshot.cursor.seq + 1
       && items.every((item, index) => index === 0 || item.seq === items[index - 1].seq + 1);
     if (!continuous) {
+      const lastSeq = items.at(-1)?.seq ?? items[0].seq;
+      const refreshKey = [
+        snapshot.cursor.workerGeneration,
+        snapshot.cursor.seq,
+        items[0].seq,
+        lastSeq,
+      ].join(':');
+      const willRefresh = recoveryRefreshKeys.get(conversationId) !== refreshKey;
       store.setState((state) => {
         const current = state.entriesByConversationId[conversationId] ?? emptyEntry();
         return {
@@ -387,15 +397,24 @@ export function createCodingConversationStore(
             ...state.entriesByConversationId,
             [conversationId]: {
               ...current,
-              loadState: 'recovering',
+              loadState: willRefresh ? 'recovering' : 'error',
               error: 'Conversation patch batch is not continuous',
             },
           },
         };
       });
+      if (willRefresh) {
+        recoveryRefreshKeys.set(conversationId, refreshKey);
+        queueMicrotask(() => {
+          if (!snapshotLoads.has(conversationId)) {
+            void store.getState().loadSnapshot(conversationId, true).catch(() => undefined);
+          }
+        });
+      }
       return;
     }
     recoveryBatches.delete(conversationId);
+    recoveryRefreshKeys.delete(conversationId);
     store.getState().applyPatchBatchEvent({
       type: 'patch-batch',
       conversationId,
@@ -521,6 +540,7 @@ export function createCodingConversationStore(
     },
 
     async recoverConversation(conversationId) {
+      recoveryRefreshKeys.delete(conversationId);
       set((state) => {
         const entry = state.entriesByConversationId[conversationId] ?? emptyEntry();
         return {