feat: add PilotDeck package

Package the upstream Linux Electron release for x86_64 and aarch64 as
pilotdeck. The Debian payload includes the bundled Node.js runtime and web
UI; the wrapper adds the Electron runtime libraries to LD_LIBRARY_PATH and
installs a desktop entry.

README lists the new package.

README.md

@@ -37,6 +37,7 @@ A custom Nix overlay and flake providing additional packages not found in upstre
 | `radar` | Modern Kubernetes visibility — topology, event timeline, service traffic, resource browsing, Helm management, and GitOps support | Kubernetes |
 | `omniroute` | Unified AI router with 160+ providers, auto fallback, MCP/A2A, OpenAI-compatible APIs | AI LLM Gateway |
 | `open-code-review` | AI-powered code review CLI combining deterministic pipelines with an LLM agent for line-level review comments | AI Coding Agents |
+| `pilotdeck` | Task-oriented AI Agent productivity platform with WorkSpace isolation, white-box memory, and smart routing | AI Agents |
 | `relay-free-llm` | RESTful API to route user prompts to various AI model providers with automatic failover and intent-based routing | AI LLM Gateway |
 | `stakpak` | DevOps AI agent that generates infrastructure code, debugs Kubernetes, configures CI/CD, and automates deployments | AI Agents |
 | `traycer` | Open-source AI orchestration app for agentic coding | AI Coding Agents |
@@ -229,6 +230,7 @@ nix-overlay/
 │   ├── mcp-gateway/            # MCP protocol gateway
 │   ├── omniroute/              # Unified AI router with 160+ providers
 │   ├── open-code-review/       # AI code review CLI (deterministic + LLM agent)
+│   ├── pilotdeck/              # Task-oriented AI Agent productivity platform
 │   ├── radar/                  # Kubernetes UI (topology, timeline, Helm, GitOps)
 │   ├── relay-free-llm/        # AI model provider routing gateway
 │   ├── skillsmcp/              # MCP server for Agent Skills