Q143: earlier messages come from the database, page by page, back to the first one

Review limit (5) reached; the last finding (exhaustion latched) is fixed
by taking it from each latest hasMore.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/main/app/ipc-contracts/platform.ts

@@ -72,6 +72,10 @@ export const platformContracts = {
   approvalDrifts: z.strictObject({ orgId: id }),
   runRequests: z.strictObject({ orgId: id, runId: id }),
   chatThreadHistory: z.strictObject({ orgId: id, threadId: id }),
+  chatSpaceHistory: z.union([
+    z.strictObject({ orgId: id, spaceId: id, beforeMessageId: id.nullable(), limit: z.number().int().min(1).max(500) }),
+    z.strictObject({ orgId: id, spaceId: id, beforeMessageId: id.nullable(), fromMessageId: id }),
+  ]),
   search: z.strictObject({
     orgId: id, employeeId: id, query: z.string(), entityTypes: z.array(z.enum(SEARCH_ENTITY_TYPES)).optional(), limit: z.number().optional(),
   }) satisfies z.ZodType<C.SearchInput>,

src/main/app/ipc-handlers.ts

@@ -28,7 +28,7 @@ import { SprintService } from "../services/sprint-service";
 import { ComposioConnectionService } from "../services/composio/composio-connection-service";
 import { ConnectorGrantsService } from "../services/composio/connector-grants";
 import { approvalDrifts } from "../services/approval-drift";
-import { threadHistory } from "../services/chat-history";
+import { spaceHistory, threadHistory } from "../services/chat-history";
 import { requestsForRun } from "../services/provider-request-store";
 import { setGoalAuditor } from "../services/goal-audit-inputs";
 import { IntegrationKeyStore } from "../services/integration-key-store";
@@ -415,6 +415,7 @@ export function registerIpcHandlers(deps: IpcDeps): void {
   handle("grantConnector", (input) => mutate(() => new ConnectorGrantsService(deps.connection.db).grantFromBoard(input)));
   handle("runRequests", (input) => ok(requestsForRun(deps.connection.db, input.orgId, input.runId)));
   handle("chatThreadHistory", (input) => ok(threadHistory(deps.connection.db, input.orgId, input.threadId)));
+  handle("chatSpaceHistory", (input) => ok(spaceHistory(deps.connection.db, input.orgId, input.spaceId, input.beforeMessageId, "limit" in input ? { limit: input.limit } : { fromMessageId: input.fromMessageId })));
   handle("approvalDrifts", (input) => {
     try {
       return ok(approvalDrifts(deps.connection.db, input.orgId));