fix(hooks): pass sessionFile and sessionKey in after_compaction hook (#40781)

Merged via squash.

Prepared head SHA: 11e85f8651
Co-authored-by: jarimustonen <1272053+jarimustonen@users.noreply.github.com>
Co-authored-by: jalehman <550978+jalehman@users.noreply.github.com>
Reviewed-by: @jalehman

src/agents/pi-embedded-runner/compact.hooks.test.ts

@@ -529,6 +529,7 @@ describe("compactEmbeddedPiSessionDirect hooks", () => {
         messageCount: 1,
         tokenCount: 10,
         compactedCount: 1,
+        sessionFile: "/tmp/session.jsonl",
       },
       expect.objectContaining({ sessionKey: "agent:main:session-1", messageProvider: "telegram" }),
     );

src/agents/pi-embedded-runner/compact.ts

@@ -1039,6 +1039,7 @@ export async function compactEmbeddedPiSessionDirect(
                 messageCount: messageCountAfter,
                 tokenCount: tokensAfter,
                 compactedCount,
+                sessionFile: params.sessionFile,
               },
               {
                 sessionId: params.sessionId,

src/agents/pi-embedded-subscribe.handlers.compaction.ts

@@ -80,8 +80,9 @@ export function handleAutoCompactionEnd(
           {
             messageCount: ctx.params.session.messages?.length ?? 0,
             compactedCount: ctx.getCompactionCount(),
+            sessionFile: ctx.params.session.sessionFile,
           },
-          {},
+          { sessionKey: ctx.params.sessionKey },
         )
         .catch((err) => {
           ctx.log.warn(`after_compaction hook failed: ${String(err)}`);