fix: allow plugin commands on Slack when channel supports native commands

The `getPluginCommandSpecs` gate only checked `nativeCommandsAutoEnabled`,
which Slack sets to `false`. This caused plugin-registered slash commands
(e.g. /lcm, /lossless from lossless-claw) to be silently excluded from
Slack, even though Slack declares `capabilities.nativeCommands: true` and
the user explicitly enables native commands via config.

The fix widens the gate to also pass when the channel plugin declares
`capabilities.nativeCommands === true`, and adds the
`getPluginCommandSpecs` integration to the Slack slash command setup so
plugin commands are merged into the native command list.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

extensions/slack/src/monitor/slash.ts

@@ -9,6 +9,7 @@ import {
   resolveNativeCommandsEnabled,
   resolveNativeSkillsEnabled,
 } from "openclaw/plugin-sdk/config-runtime";
+import { getPluginCommandSpecs } from "openclaw/plugin-sdk/command-auth";
 import type { ReplyPayload } from "openclaw/plugin-sdk/reply-runtime";
 import { danger, logVerbose } from "openclaw/plugin-sdk/runtime-env";
 import { chunkItems, normalizeLowercaseStringOrEmpty } from "openclaw/plugin-sdk/text-runtime";
@@ -670,6 +671,15 @@ export async function registerSlackMonitorSlashCommands(params: {
       skillCommands,
       provider: "slack",
     });
+    const existingNativeNames = new Set(
+      nativeCommands.map((c) => normalizeLowercaseStringOrEmpty(c.name)).filter(Boolean),
+    );
+    for (const pluginCommand of getPluginCommandSpecs("slack")) {
+      const normalizedName = normalizeLowercaseStringOrEmpty(pluginCommand.name);
+      if (!normalizedName || existingNativeNames.has(normalizedName)) continue;
+      existingNativeNames.add(normalizedName);
+      nativeCommands.push(pluginCommand);
+    }
   }
 
   if (nativeCommands.length > 0) {

src/plugin-sdk/command-auth.ts

@@ -76,6 +76,7 @@ export {
   listSkillCommandsForWorkspace,
   resolveSkillCommandInvocation,
 } from "../auto-reply/skill-commands.js";
+export { getPluginCommandSpecs } from "../plugins/command-registration.js";
 export type { SkillCommandSpec } from "../agents/skills.js";
 export {
   buildModelsProviderData,

src/plugins/command-registry-state.ts

@@ -73,11 +73,15 @@ export function getPluginCommandSpecs(provider?: string): Array<{
   acceptsArgs: boolean;
 }> {
   const providerName = normalizeOptionalLowercaseString(provider);
-  if (
-    providerName &&
-    getChannelPlugin(providerName)?.commands?.nativeCommandsAutoEnabled !== true
-  ) {
-    return [];
+  if (providerName) {
+    const channelPlugin = getChannelPlugin(providerName);
+    if (
+      channelPlugin &&
+      !channelPlugin.capabilities?.nativeCommands &&
+      !channelPlugin.commands?.nativeCommandsAutoEnabled
+    ) {
+      return [];
+    }
   }
   return Array.from(pluginCommands.values()).map((cmd) => ({
     name: resolvePluginNativeName(cmd, provider),

src/plugins/commands.test.ts

@@ -296,7 +296,7 @@ describe("registerPluginCommand", () => {
       { provider: undefined, expectedNames: ["talkvoice"] },
       { provider: "discord", expectedNames: ["discordvoice"] },
       { provider: "telegram", expectedNames: ["talkvoice"] },
-      { provider: "slack", expectedNames: [] },
+      { provider: "slack", expectedNames: ["talkvoice"] },
     ]);
   });