chore: actualizar porta gateway para 3168, port-map e mcps.json

Porta 3175 já ocupada por mcp-metabase-ai no gateway.
Deploy confirmado: PM2 online, health OK, 165 tools.

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

SPEC.md

@@ -28,7 +28,7 @@ custos, actividade, skills, segredos e dashboard via API REST.
 | **User ID** | `v1N5OccPn9DGq6iog7qW9nEvnXYFT3iO` (Emanuel) |
 | **Auth** | `Authorization: Bearer {PAPERCLIP_API_KEY}` (Board API Key, SHA256 hash em `board_api_keys`) |
 | **Destino** | `/home/ealmeida/mcp-servers/mcp-paperclip/` |
-| **Transport** | STDIO (Claude Code) + StreamableHTTP porta `3175` + SSE porta `3175` (legado) |
+| **Transport** | STDIO (Claude Code) + StreamableHTTP porta `3168` + SSE porta `3168` (legado) |
 | **Linguagem** | TypeScript (padrão Descomplicar) |
 | **API Total** | 246 endpoints em 21 módulos — este MCP cobre 159 tools |
 
@@ -515,7 +515,7 @@ PAPERCLIP_API_KEY=pcp_mcp_...          # Board API Key gerada pelo script
 PAPERCLIP_COMPANY_ID=ebe10308-efd7-453f-86ab-13e6fe84004f
 
 # HTTP/SSE transport
-HTTP_PORT=3175
+HTTP_PORT=3168
 ```
 
 **`PAPERCLIP_COMPANY_ID` injectado automaticamente** nas tools que precisam de `:companyId`,