fix: align compaction summary message types

src/agents/compaction.ts

@@ -278,8 +278,8 @@ export async function summarizeInStages(params: {
   }
 
   const summaryMessages: AgentMessage[] = partialSummaries.map((summary) => ({
-    role: "assistant",
-    content: [{ type: "text", text: summary }],
+    role: "user",
+    content: summary,
     timestamp: Date.now(),
   }));
 

src/agents/pi-extensions/compaction-safeguard.ts

@@ -1,5 +1,5 @@
 import type { AgentMessage } from "@mariozechner/pi-agent-core";
-import type { ExtensionAPI, ExtensionContext, FileOperations } from "@mariozechner/pi-coding-agent";
+import type { ExtensionAPI, FileOperations } from "@mariozechner/pi-coding-agent";
 import {
   BASE_CHUNK_RATIO,
   MIN_CHUNK_RATIO,