feat: show DEXBot2 version in status command + suppress stderr noise

Shows `DEXBot2 v<version>` at the top of `node dexbot status|stat`
output so the user always sees what's installed, regardless of
whether bots are running.

Also silences the `/bin/sh: pm2: not found` stderr message when
PM2 is not installed, by redirecting stderr in the execSync call.

## Changes
- `modules/config.ts`: add `Config.VERSION` read from root package.json
- `dexbot.ts`: print version in `status` handler; add `2>/dev/null` to
  `pm2 jlist` execSync

## Testing
- `node dexbot stat` shows version and clean output when PM2 absent

Author: froooze

dexbot.ts

@@ -944,6 +944,8 @@ async function handleCLICommands() {
             return true;
         }
         case 'status': {
+            console.log(`DEXBot2 v${Config.VERSION}`);
+            console.log();
             const { spawnSync, execSync } = require('child_process');
             const MONOLITHIC_PID_FILE = PATHS.PROFILES.MONOLITHIC_PID;
             const SUPERVISOR_SOCK = PATHS.PROFILES.SUPERVISOR_SOCK;
@@ -980,7 +982,7 @@ async function handleCLICommands() {
             }
 
             try {
-                const output = execSync('pm2 jlist', { encoding: 'utf8', timeout: 5000 }).toString().trim();
+                const output = execSync('pm2 jlist 2>/dev/null', { encoding: 'utf8', timeout: 5000 }).toString().trim();
                 const jsonStart = output.indexOf('[');
                 if (jsonStart === -1) {
                     console.log('No DEXBot2 processes running.');

modules/config.ts

@@ -10,6 +10,7 @@
  * Browser: would be populated from URL params, localStorage, etc.
  */
 
+const path = require('path');
 const { hasProcess } = require('./env');
 
 function str(key: string): string | undefined {
@@ -38,6 +39,7 @@ const Config: {
     BOT_NAME: string | undefined;
     PREFERRED_ACCOUNT: string | undefined;
     LIVE_BOT_NAME: string | undefined;
+    VERSION: string;
 
     // ── Feature flags ───────────────────────────────────────────────
     DEXBOT_SKIP_PROFILE_VALIDATION: boolean;
@@ -100,6 +102,7 @@ const Config: {
     BOT_NAME: str('BOT_NAME'),
     PREFERRED_ACCOUNT: str('PREFERRED_ACCOUNT'),
     LIVE_BOT_NAME: str('LIVE_BOT_NAME'),
+    VERSION: hasProcess() ? require(path.join(__dirname, '..', '..', 'package.json')).version : '0.0.0',
 
     // ── Feature flags ───────────────────────────────────────────────
     DEXBOT_SKIP_PROFILE_VALIDATION: bool('DEXBOT_SKIP_PROFILE_VALIDATION'),