fix: repair session compact type narrowing

jalehman · jalehman · commit 425212a1ec68 · 2026-06-17T12:50:03.000-07:00
diff --git a/src/config/sessions/session-accessor.test.ts b/src/config/sessions/session-accessor.test.ts
@@ -553,8 +553,27 @@ describe("session accessor file-backed seam", () => {
       sessionKey: "agent:main:main",
       storePath,
     };
+    const contextBudgetStatus: NonNullable<SessionEntry["contextBudgetStatus"]> = {
+      schemaVersion: 1,
+      source: "pre-prompt-estimate",
+      updatedAt: 90,
+      provider: "openai",
+      model: "gpt-5.5",
+      route: "fits",
+      shouldCompact: false,
+      estimatedPromptTokens: 10,
+      contextTokenBudget: 100,
+      promptBudgetBeforeReserve: 80,
+      reserveTokens: 20,
+      effectiveReserveTokens: 20,
+      remainingPromptBudgetTokens: 70,
+      overflowTokens: 0,
+      toolResultReducibleChars: 0,
+      messageCount: 1,
+      unwindowedMessageCount: 1,
+    };
     await upsertSessionEntry(scope, {
-      contextBudgetStatus: { route: "stale" } as NonNullable<SessionEntry["contextBudgetStatus"]>,
+      contextBudgetStatus,
       inputTokens: 10,
       outputTokens: 20,
       sessionFile: manualTranscriptPath,
diff --git a/src/gateway/server-methods/sessions.ts b/src/gateway/server-methods/sessions.ts
@@ -2629,7 +2629,18 @@ export const sessionsHandlers: GatewayRequestHandlers = {
       },
     );
     if (!trimResult.compacted) {
-      if ("reason" in trimResult && trimResult.reason === "no transcript") {
+      if ("kept" in trimResult) {
+        respond(
+          true,
+          {
+            ok: true,
+            key: target.canonicalKey,
+            compacted: false,
+            kept: trimResult.kept,
+          },
+          undefined,
+        );
+      } else {
         respond(
           true,
           {
@@ -2640,18 +2651,7 @@ export const sessionsHandlers: GatewayRequestHandlers = {
           },
           undefined,
         );
-        return;
       }
-      respond(
-        true,
-        {
-          ok: true,
-          key: target.canonicalKey,
-          compacted: false,
-          kept: trimResult.kept,
-        },
-        undefined,
-      );
       return;
     }
 
