fix(webchat): hide reset startup prompt from history

Closes #72369.

Remote validation (Blacksmith Testbox tbx_01kq7874j733m8pxesmgvfz1x1):
- pnpm test src/auto-reply/reply/get-reply-run.media-only.test.ts src/gateway/server-methods/server-methods.test.ts
- node scripts/run-vitest.mjs run --config test/vitest/vitest.unit-ui.config.ts ui/src/ui/controllers/chat.test.ts
- pnpm check:changed

Co-authored-by: haishmg <4529977+haishmg@users.noreply.github.com>

CHANGELOG.md

@@ -21,6 +21,7 @@ Docs: https://docs.openclaw.ai
 ### Fixes
 
 - Memory-core: re-resolve the active runtime config whenever `memory_search` or `memory_get` executes, so provider changes made by `config.patch` stop leaving stale embedding backends behind in existing tool instances. Fixes #61098. Thanks @BradGroux and @Linux2010.
+- WebChat: keep bare `/new` and `/reset` startup instructions out of visible chat history while preserving `/reset <note>` as user-visible transcript text. Fixes #72369. Thanks @collynes and @haishmg.
 - Channels/setup: treat bundled channel plugins as already bundled during `channels add` and onboarding, enabling them without writing redundant `plugins.load.paths` entries or path install records. Fixes #72740. Thanks @iCodePoet.
 - WhatsApp: honor gateway `HTTPS_PROXY` / `HTTP_PROXY` env vars for QR-login WebSocket connections, while respecting `NO_PROXY`, so proxied networks no longer fall back to direct `mmg.whatsapp.net` connections that time out with 408. Fixes #72547; supersedes #72692. Thanks @mebusw and @SymbolStar.
 - Bonjour: default mDNS advertisements to the system hostname when it is DNS-safe, avoiding `openclaw.local` probing conflicts and Gateway restart loops on hosts such as `Lobster` or `ubuntu`. Fixes #72355 and #72689; supersedes #72694. Thanks @mscheuerlein-bot, @gcusms, @moyuwuhen601, @pavan987, @zml-0912, @hhq365, and @SymbolStar.

src/auto-reply/reply/get-reply-run.media-only.test.ts

@@ -1017,6 +1017,85 @@ describe("runPreparedReply media-only handling", () => {
     expect(call?.transcriptCommandBody).toBe("[OpenClaw heartbeat poll]");
     expect(call?.followupRun.transcriptPrompt).toBe("[OpenClaw heartbeat poll]");
   });
+
+  it("keeps bare reset startup instructions out of visible transcript prompt", async () => {
+    await runPreparedReply(
+      baseParams({
+        ctx: {
+          Body: "/new",
+          RawBody: "/new",
+          CommandBody: "/new",
+          Provider: "webchat",
+          Surface: "webchat",
+          ChatType: "direct",
+        },
+        sessionCtx: {
+          Body: "",
+          BodyStripped: "",
+          Provider: "webchat",
+          Surface: "webchat",
+          ChatType: "direct",
+        },
+        command: {
+          surface: "webchat",
+          channel: "webchat",
+          isAuthorizedSender: true,
+          abortKey: "session-key",
+          ownerList: [],
+          senderIsOwner: true,
+          rawBodyNormalized: "/new",
+          commandBodyNormalized: "/new",
+        } as never,
+      }),
+    );
+
+    const call = vi.mocked(runReplyAgent).mock.calls.at(-1)?.[0];
+    expect(call?.commandBody).toContain("A new session was started via /new or /reset.");
+    expect(call?.followupRun.prompt).toContain("A new session was started via /new or /reset.");
+    expect(call?.transcriptCommandBody).toBe("");
+    expect(call?.followupRun.transcriptPrompt).toBe("");
+  });
+
+  it("keeps reset user notes visible while hiding startup instructions", async () => {
+    await runPreparedReply(
+      baseParams({
+        ctx: {
+          Body: "/reset summarize my workspace",
+          RawBody: "/reset summarize my workspace",
+          CommandBody: "/reset summarize my workspace",
+          Provider: "webchat",
+          Surface: "webchat",
+          ChatType: "direct",
+        },
+        sessionCtx: {
+          Body: "",
+          BodyStripped: "",
+          Provider: "webchat",
+          Surface: "webchat",
+          ChatType: "direct",
+        },
+        command: {
+          surface: "webchat",
+          channel: "webchat",
+          isAuthorizedSender: true,
+          abortKey: "session-key",
+          ownerList: [],
+          senderIsOwner: true,
+          rawBodyNormalized: "/reset summarize my workspace",
+          commandBodyNormalized: "/reset summarize my workspace",
+          softResetTriggered: true,
+          softResetTail: "summarize my workspace",
+        } as never,
+      }),
+    );
+
+    const call = vi.mocked(runReplyAgent).mock.calls.at(-1)?.[0];
+    expect(call?.commandBody).toContain("A new session was started via /new or /reset.");
+    expect(call?.commandBody).toContain("summarize my workspace");
+    expect(call?.transcriptCommandBody).toBe("summarize my workspace");
+    expect(call?.followupRun.transcriptPrompt).toBe("summarize my workspace");
+  });
+
   it("uses inbound origin channel for run messageProvider", async () => {
     await runPreparedReply(
       baseParams({

src/auto-reply/reply/get-reply-run.ts

@@ -501,9 +501,11 @@ export async function runPreparedReply(
     : [inboundUserContext, "[User sent media without caption]"].filter(Boolean).join("\n\n");
   const transcriptBodyBase = isHeartbeat
     ? HEARTBEAT_TRANSCRIPT_PROMPT
-    : hasUserBody
-      ? baseBodyFinal
-      : "[User sent media without caption]";
+    : isBareSessionReset
+      ? softResetTail
+      : hasUserBody
+        ? baseBodyFinal
+        : "[User sent media without caption]";
   let prefixedBodyBase = await applySessionHints({
     baseBody: effectiveBaseBody,
     abortedLastRun,