From 67b45858e6ef28f75dd83a941ed8033ecfc592c6 Mon Sep 17 00:00:00 2001
From: "prompt.ac/@jeffrey" <mail@aesthetic.computer>
Date: Wed, 7 Oct 2026 16:27:50 -0700
Subject: [PATCH] Aesel rock names the engine that answers it

provider_agent_type was hardcoded to codex. connected() now stamps the
backend id, including after a /backend swap.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 aesel/src/slab-session.mjs       | 8 +++++---
 aesel/src/tui.mjs                | 6 +++---
 aesel/test/slab-session.test.mjs | 3 ++-
 3 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/aesel/src/slab-session.mjs b/aesel/src/slab-session.mjs
index d3210a5ab4..d20f55d712 100644
--- a/aesel/src/slab-session.mjs
+++ b/aesel/src/slab-session.mjs
@@ -115,7 +115,9 @@ export class SlabSession {
       // what it is showing is the current save, a save still on its way, or a
       // push in flight. Without them a frozen frame and a live one look alike.
       flow: "live",
-      provider_agent_type: "codex",
+      // Which engine answers this rock: claude, codex, ac or open. Set on
+      // connect, because /backend can swap it mid-session.
+      provider_agent_type: "",
       provider_session_id: "",
       updated: now(),
       started_at: now(),
@@ -140,8 +142,8 @@ export class SlabSession {
     return this.sessionId;
   }
 
-  connected(providerSessionId) {
-    this.#update({ provider_session_id: providerSessionId || "" });
+  connected(providerSessionId, providerAgentType = "") {
+    this.#update({ provider_session_id: providerSessionId || "", provider_agent_type: providerAgentType });
   }
 
   snapshot() {
diff --git a/aesel/src/tui.mjs b/aesel/src/tui.mjs
index d5ba91bffe..075a3bfa30 100755
--- a/aesel/src/tui.mjs
+++ b/aesel/src/tui.mjs
@@ -2222,7 +2222,7 @@ async function restartEngine(note, nextBackend = backend, nextModel = model, nex
     if(nextBackend.id === "ac" && previousBackend.id === "ac") { engine.messages = structuredClone(previous.messages); engine.turns = previous.turns; }
     const connection = await engine.connect();
     previous.close();
-    slabSession.connected(engine.threadId);
+    slabSession.connected(engine.threadId, backend.id);
     state.model = connection?.model || model;
     await rememberProvider();
     saveDesktopIdle();
@@ -2374,7 +2374,7 @@ async function commandNew(rest) {
     });
     state.entries=[];
     state.input='';state.cursor=0;state.queued=[];state.scrollOffset=0;
-    slabSession.connected(engine.threadId);
+    slabSession.connected(engine.threadId, backend.id);
     if(state.medium==='piece') {
       live.watch(liveError);refreshQr();live.push().catch(liveError);
       if(rest!=='thread') { blankPublished=false;autopublish.published=null;publishBlankOnce(); }
@@ -3478,7 +3478,7 @@ try {
   await inboxReady;
   markStartup('engine-connected');flushStartupTrace();
   bootDone();
-  slabSession.connected(connection?.thread?.id || engine.threadId);
+  slabSession.connected(connection?.thread?.id || engine.threadId, backend.id);
   state.status = "ready";
   state.model = connection?.model || model;
   // The bottom line names the model properly once the provider's list is
diff --git a/aesel/test/slab-session.test.mjs b/aesel/test/slab-session.test.mjs
index ff2a810067..bd028575c4 100644
--- a/aesel/test/slab-session.test.mjs
+++ b/aesel/test/slab-session.test.mjs
@@ -48,10 +48,11 @@ test("publishes the full Slab prompt lifecycle", async (context) => {
   assert.equal(marker.agent_type, "aesel");
   assert.equal(marker.state, "blank");
 
-  session.connected("00000000-0000-0000-0000-000000000001");
+  session.connected("00000000-0000-0000-0000-000000000001", "claude");
   session.working("make this window visible to prox");
   marker = await readJson(active);
   assert.equal(marker.provider_session_id, "00000000-0000-0000-0000-000000000001");
+  assert.equal(marker.provider_agent_type, "claude");
   assert.equal(marker.subject, "make this window visible to prox");
   assert.equal(marker.state, "working");
   assert.equal(await exists(running), true);
-- 
2.51.2