fix(slack): rename /status to /agentstatus for Slack slash commands

Slack reserves /status as a built-in command. Registering it in a Slack
app manifest returns "invalid name" and invalidates the entire
slash_commands array. This adds a Slack provider override using the
existing NATIVE_NAME_OVERRIDES system (same pattern as Discord's
tts → voice rename) so the handler registers as /agentstatus instead.

src/auto-reply/commands-registry.test.ts

@@ -109,6 +109,16 @@ describe("commands registry", () => {
     expect(findCommandByNativeName("tts", "discord")).toBeUndefined();
   });
 
+  it("renames status to agentstatus for slack", () => {
+    const native = listNativeCommandSpecsForConfig(
+      { commands: { native: true } },
+      { provider: "slack" },
+    );
+    expect(native.find((spec) => spec.name === "agentstatus")).toBeTruthy();
+    expect(native.find((spec) => spec.name === "status")).toBeFalsy();
+    expect(findCommandByNativeName("agentstatus", "slack")?.key).toBe("status");
+  });
+
   it("keeps discord native command specs within slash-command limits", () => {
     const native = listNativeCommandSpecsForConfig(
       { commands: { native: true } },

src/auto-reply/commands-registry.ts

@@ -123,6 +123,11 @@ const NATIVE_NAME_OVERRIDES: Record<string, Record<string, string>> = {
   discord: {
     tts: "voice",
   },
+  slack: {
+    // Slack reserves /status — registering it returns "invalid name"
+    // and invalidates the entire slash_commands manifest array.
+    status: "agentstatus",
+  },
 };
 
 function resolveNativeName(command: ChatCommandDefinition, provider?: string): string | undefined {