telegram: add error handlers to stop silent polling death

The bot would silently stop delivering messages after the first error:
grammy's default handler calls bot.stop() on any middleware throw, and
void bot.start() / void mcp.notification() swallow rejections with no log.

- bot.catch(): log and keep polling on handler errors
- bot.start().catch(): log when polling dies (bad token, 409, network)
- mcp.notification().catch(): log when inbound delivery to Claude fails
- process-level unhandledRejection/uncaughtException as a safety net

Fixes #756 #759 #761 #777 #809, partial #788

external_plugins/discord/README.md

@@ -55,9 +55,7 @@ Install the plugin:
 /discord:configure MTIz...
 ```
 
-Writes `DISCORD_BOT_TOKEN=...` to `~/.claude/channels/discord/.env`. You can also write that file by hand, or set the variable in your shell environment — shell takes precedence.
-
-> To run multiple bots on one machine (different tokens, separate allowlists), point `DISCORD_STATE_DIR` at a different directory per instance.
+Writes `DISCORD_BOT_TOKEN=...` to `.claude/channels/discord/.env` in your project. You can also write that file by hand, or set the variable in your shell environment — shell takes precedence.
 
 **6. Relaunch with the channel flag.**
 

external_plugins/discord/server.ts

@@ -29,7 +29,7 @@ import { readFileSync, writeFileSync, mkdirSync, readdirSync, rmSync, statSync,
 import { homedir } from 'os'
 import { join, sep } from 'path'
 
-const STATE_DIR = process.env.DISCORD_STATE_DIR ?? join(homedir(), '.claude', 'channels', 'discord')
+const STATE_DIR = join(homedir(), '.claude', 'channels', 'discord')
 const ACCESS_FILE = join(STATE_DIR, 'access.json')
 const APPROVED_DIR = join(STATE_DIR, 'approved')
 const ENV_FILE = join(STATE_DIR, '.env')

external_plugins/telegram/README.md

@@ -35,9 +35,7 @@ Install the plugin:
 /telegram:configure 123456789:AAHfiqksKZ8...
 ```
 
-Writes `TELEGRAM_BOT_TOKEN=...` to `~/.claude/channels/telegram/.env`. You can also write that file by hand, or set the variable in your shell environment — shell takes precedence.
-
-> To run multiple bots on one machine (different tokens, separate allowlists), point `TELEGRAM_STATE_DIR` at a different directory per instance.
+Writes `TELEGRAM_BOT_TOKEN=...` to `.claude/channels/telegram/.env` in your project. You can also write that file by hand, or set the variable in your shell environment — shell takes precedence.
 
 **4. Relaunch with the channel flag.**
 

external_plugins/telegram/server.ts

@@ -22,7 +22,7 @@ import { readFileSync, writeFileSync, mkdirSync, readdirSync, rmSync, statSync,
 import { homedir } from 'os'
 import { join, extname, sep } from 'path'
 
-const STATE_DIR = process.env.TELEGRAM_STATE_DIR ?? join(homedir(), '.claude', 'channels', 'telegram')
+const STATE_DIR = join(homedir(), '.claude', 'channels', 'telegram')
 const ACCESS_FILE = join(STATE_DIR, 'access.json')
 const APPROVED_DIR = join(STATE_DIR, 'approved')
 const ENV_FILE = join(STATE_DIR, '.env')
@@ -51,6 +51,15 @@ if (!TOKEN) {
 }
 const INBOX_DIR = join(STATE_DIR, 'inbox')
 
+// Last-resort safety net — without these the process dies silently on any
+// unhandled promise rejection. With them it logs and keeps serving tools.
+process.on('unhandledRejection', err => {
+  process.stderr.write(`telegram channel: unhandled rejection: ${err}\n`)
+})
+process.on('uncaughtException', err => {
+  process.stderr.write(`telegram channel: uncaught exception: ${err}\n`)
+})
+
 const bot = new Bot(TOKEN)
 let botUsername = ''
 
@@ -577,7 +586,7 @@ async function handleInbound(
 
   // image_path goes in meta only — an in-content "[image attached — read: PATH]"
   // annotation is forgeable by any allowlisted sender typing that string.
-  void mcp.notification({
+  mcp.notification({
     method: 'notifications/claude/channel',
     params: {
       content: text,
@@ -590,12 +599,25 @@ async function handleInbound(
         ...(imagePath ? { image_path: imagePath } : {}),
       },
     },
+  }).catch(err => {
+    process.stderr.write(`telegram channel: failed to deliver inbound to Claude: ${err}\n`)
   })
 }
 
-void bot.start({
+// Without this, any throw in a message handler stops polling permanently
+// (grammy's default error handler calls bot.stop() and rethrows).
+bot.catch(err => {
+  process.stderr.write(`telegram channel: handler error (polling continues): ${err.error}\n`)
+})
+
+bot.start({
   onStart: info => {
     botUsername = info.username
     process.stderr.write(`telegram channel: polling as @${info.username}\n`)
   },
+}).catch(err => {
+  // bot.start() only rejects if polling can't begin or dies unrecoverably —
+  // bad token, 409 conflict, network gone. Log it so the user isn't left
+  // wondering why messages stopped arriving.
+  process.stderr.write(`telegram channel: polling stopped: ${err}\n`)
 })