docs: add quick setup blocks to chat providers

docs/providers/slack.md

@@ -5,6 +5,22 @@ read_when: "Setting up Slack or debugging Slack socket mode"
 
 # Slack (socket mode)
 
+## Quick setup (beginner)
+1) Create a Slack app and enable **Socket Mode**.
+2) Create an **App Token** (`xapp-...`) and **Bot Token** (`xoxb-...`).
+3) Set tokens for Clawdbot and start the gateway.
+
+Minimal config:
+```json5
+{
+  slack: {
+    enabled: true,
+    appToken: "xapp-...",
+    botToken: "xoxb-..."
+  }
+}
+```
+
 ## Setup
 1) Create a Slack app (From scratch) in https://api.slack.com/apps.
 2) **Socket Mode** → toggle on. Then go to **Basic Information** → **App-Level Tokens** → **Generate Token and Scopes** with scope `connections:write`. Copy the **App Token** (`xapp-...`).
@@ -24,6 +40,24 @@ Use the manifest below so scopes and events stay in sync.
 
 Multi-account support: use `slack.accounts` with per-account tokens and optional `name`. See [`gateway/configuration`](/gateway/configuration#telegramaccounts--discordaccounts--slackaccounts--signalaccounts--imessageaccounts) for the shared pattern.
 
+## Clawdbot config (minimal)
+
+Set tokens via env vars (recommended):
+- `SLACK_APP_TOKEN=xapp-...`
+- `SLACK_BOT_TOKEN=xoxb-...`
+
+Or via config:
+
+```json5
+{
+  slack: {
+    enabled: true,
+    appToken: "xapp-...",
+    botToken: "xoxb-..."
+  }
+}
+```
+
 ## History context
 - `slack.historyLimit` (or `slack.accounts.*.historyLimit`) controls how many recent channel/group messages are wrapped into the prompt.
 - Falls back to `messages.groupChat.historyLimit`. Set `0` to disable (default 50).