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/commands/command-executor.service.ts

@@ -1,7 +1,7 @@
 import { forwardRef, Inject, Injectable, Logger, Optional } from '@nestjs/common';
-import type { QueueHandle } from '@mosaic/queue';
-import type { Brain } from '@mosaic/brain';
-import type { SlashCommandPayload, SlashCommandResultPayload } from '@mosaic/types';
+import type { QueueHandle } from '@mosaicstack/queue';
+import type { Brain } from '@mosaicstack/brain';
+import type { SlashCommandPayload, SlashCommandResultPayload } from '@mosaicstack/types';
 import { AgentService } from '../agent/agent.service.js';
 import { ChatGateway } from '../chat/chat.gateway.js';
 import { SessionGCService } from '../gc/session-gc.service.js';