fix: improve Slack support and fix Windows community plugin installer…

src/core/plugin/lifecycle-manager.ts

@@ -300,6 +300,12 @@ export class LifecycleManager {
         this.contexts.set(plugin.name, ctx)
         this._loaded.add(plugin.name)
         this.eventBus?.emit(BusEvent.PLUGIN_LOADED, { name: plugin.name, version: plugin.version })
+
+        // Special handling for manually installed channel adapters (helps Windows users)
+        if (['@openacp/slack-adapter', '@openacp/discord-adapter'].includes(plugin.name)) {
+          const channelId = plugin.name.includes('slack') ? 'slack' : 'discord'
+          this.eventBus?.emit('channel:adapter:registered', { channelId, pluginName: plugin.name })
+        }
       } catch (err) {
         this._failed.add(plugin.name)
         ctx.cleanup()

src/core/plugin/plugin-installer.ts

@@ -1,11 +1,8 @@
-import { execFile } from 'node:child_process'
-import { promisify } from 'node:util'
+import { spawn } from 'node:child_process'
 import * as fs from 'node:fs/promises'
 import * as path from 'node:path'
 import { pathToFileURL } from 'node:url'
 
-const execFileAsync = promisify(execFile)
-
 /**
  * Import a package resolved from a specific directory (not the project root).
  *
@@ -70,8 +67,26 @@ export async function installNpmPlugin(packageName: string, pluginsDir?: string)
     // Not installed, proceed with install
   }
 
-  await execFileAsync('npm', ['install', packageName, '--prefix', dir, '--save', '--ignore-scripts'], {
-    timeout: 60000,
+  // More robust npm install (especially on Windows)
+  await new Promise<void>((resolve, reject) => {
+    const child = spawn('npm', [
+      'install', packageName,
+      '--prefix', dir,
+      '--save',
+      '--ignore-scripts',
+      '--no-audit',
+      '--no-fund'
+    ], {
+      stdio: 'inherit',
+      shell: process.platform === 'win32',
+      windowsHide: true,
+    })
+
+    child.on('close', (code) => {
+      if (code === 0) resolve()
+      else reject(new Error(`npm install failed with exit code ${code}`))
+    })
+    child.on('error', reject)
   })
 
   return await importFromDir(packageName, dir)

src/core/setup/setup-channels.ts

@@ -14,6 +14,7 @@ import { guardCancel, ok, c } from "./helpers.js";
 // Telegram is built-in, so it uses a direct import path instead of this map.
 const CHANNEL_PLUGIN_NAME: Record<string, string> = {
   discord: "@openacp/discord-adapter",
+  slack:   "@openacp/slack-adapter",
 };
 
 /**
@@ -43,6 +44,13 @@ export async function getChannelStatuses(config: Config, settingsManager?: Setti
         enabled = ps.enabled !== false;
         hint = ps.guildId ? `Guild: ${ps.guildId}` : undefined;
       }
+    } else if (settingsManager && id === "slack") {
+      const ps = await settingsManager.loadSettings("@openacp/slack-adapter");
+      if (ps.botToken && ps.appToken) {
+        configured = true;
+        enabled = ps.enabled !== false;
+        hint = "Connected";
+      }
     }
 
     statuses.push({ id, label: meta.label, configured, enabled, hint });

src/core/setup/types.ts

@@ -43,9 +43,10 @@ export const ONBOARD_SECTION_OPTIONS: Array<{
 
 /** Display metadata for each core-managed channel type. */
 export const CHANNEL_META: Record<string, { label: string; method: string }> = {
-  sse: { label: "Desktop App", method: "SSE" },
-  telegram: { label: "Telegram", method: "Bot API" },
-  discord: { label: "Discord", method: "Bot API" },
+  sse:     { label: "Desktop App", method: "SSE" },
+  telegram:{ label: "Telegram",    method: "Bot API" },
+  discord: { label: "Discord",     method: "Bot API" },
+  slack:   { label: "Slack",       method: "Bot API" },
 };
 
 /** A community adapter discovered from the OpenACP plugin registry. */