fix: rename all packages from @mosaic/* to @mosaicstack/*

- Updated all package.json name fields and dependency references
- Updated all TypeScript/JavaScript imports
- Updated .woodpecker/publish.yml filters and registry paths
- Updated tools/install.sh scope default
- Updated .npmrc registry paths (worktree + host)
- Enhanced update-checker.ts with checkForAllUpdates() multi-package support
- Updated CLI update command to show table of all packages
- Added KNOWN_PACKAGES, formatAllPackagesTable, getInstallAllCommand
- Marked checkForUpdate() with @deprecated JSDoc

Closes #391

apps/gateway/src/chat/chat.gateway.ts

@@ -11,15 +11,15 @@ import {
 } from '@nestjs/websockets';
 import { Server, Socket } from 'socket.io';
 import type { AgentSessionEvent } from '@mariozechner/pi-coding-agent';
-import type { Auth } from '@mosaic/auth';
-import type { Brain } from '@mosaic/brain';
+import type { Auth } from '@mosaicstack/auth';
+import type { Brain } from '@mosaicstack/brain';
 import type {
   SetThinkingPayload,
   SlashCommandPayload,
   SystemReloadPayload,
   RoutingDecisionInfo,
   AbortPayload,
-} from '@mosaic/types';
+} from '@mosaicstack/types';
 import { AgentService, type ConversationHistoryMessage } from '../agent/agent.service.js';
 import { AUTH } from '../auth/auth.tokens.js';
 import { BRAIN } from '../brain/brain.tokens.js';