v2: make v2 the main entry point, move v1 to src/v1/

- Move all v1 files (index, router, container-runner, db, ipc, types,
  logger, channels/registry, and all utilities) to src/v1/ as a
  fully self-contained archive with no shared dependencies
- Rename v2 files to remove -v2 suffix (index-v2.ts → index.ts, etc.)
- Update all imports across v2 source, tests, and setup files
- Migrate shared utilities (config, env, container-runtime, mount-security,
  timezone, group-folder) from pino logger to v2 log module
- Migrate setup/ files from logger to log with argument order swap
- Container agent-runner: move v1 entry to v1/, rename v2 to index.ts
- Update setup skill to offer all 13 v2 channels
- Install all Chat SDK adapter packages
- dist/index.js now runs v2; dist/v1/index.js runs v1

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/env.ts

@@ -1,6 +1,6 @@
 import fs from 'fs';
 import path from 'path';
-import { logger } from './logger.js';
+import { log } from './log.js';
 
 /**
  * Parse the .env file and return values for the requested keys.
@@ -14,7 +14,7 @@ export function readEnvFile(keys: string[]): Record<string, string> {
   try {
     content = fs.readFileSync(envFile, 'utf-8');
   } catch (err) {
-    logger.debug({ err }, '.env file not found, using defaults');
+    log.debug('.env file not found, using defaults', { err });
     return {};
   }