feat(packages): add omniroute package

Add OmniRoute v3.8.28 - a unified AI router aggregating 160+ providers
with auto fallback, MCP/A2A support, and OpenAI-compatible APIs.

Uses a hybrid approach: GitHub source for dependency resolution via
fetchNpmDeps, combined with pre-built dist/ from the npm tarball to
avoid the complex Next.js build in the Nix sandbox.

README.md

@@ -23,6 +23,7 @@ A custom Nix overlay and flake providing additional packages not found in upstre
 | `kubernetes-mcp-server` | Model Context Protocol (MCP) server for Kubernetes and OpenShift | MCP Servers |
 | `loop` | Corporate messenger for your team | Communication |
 | `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 |
 | `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 |
 
@@ -121,6 +122,7 @@ nix-overlay/
 │   ├── kubernetes-mcp-server/  # MCP server for Kubernetes and OpenShift
 │   ├── loop/                   # Corporate messenger for your team
 │   ├── mcp-gateway/            # MCP protocol gateway
+│   ├── omniroute/              # Unified AI router with 160+ providers
 │   ├── radar/                  # Kubernetes UI (topology, timeline, Helm, GitOps)
 │   ├── relay-free-llm/        # AI model provider routing gateway
 │   ├── skillsmcp/              # MCP server for Agent Skills

packages/omniroute/default.nix

@@ -0,0 +1,5 @@
+{
+  pkgs,
+  ...
+}:
+pkgs.callPackage ./package.nix { }

packages/omniroute/package.nix

@@ -0,0 +1,88 @@
+{
+  lib,
+  buildNpmPackage,
+  fetchFromGitHub,
+  fetchurl,
+  nodejs_22,
+  makeBinaryWrapper,
+}:
+
+let
+  version = "3.8.28";
+  npmTarball = fetchurl {
+    url = "https://registry.npmjs.org/omniroute/-/omniroute-${version}.tgz";
+    hash = "sha256-/le4p5DSX5T7/srNuxVBLepzUPw8BgIVio+h0JnbfyY=";
+  };
+in
+
+buildNpmPackage (finalAttrs: {
+  pname = "omniroute";
+  inherit version;
+
+  src = fetchFromGitHub {
+    owner = "diegosouzapw";
+    repo = "OmniRoute";
+    rev = "v${finalAttrs.version}";
+    hash = "sha256-BRvpbhhLTYj2rKw+nZloaXkpu3ySs5sWZo9425xvAPs=";
+  };
+
+  nodejs = nodejs_22;
+
+  npmDepsHash = "sha256-Q1KLR3NkeFBB+tQzBazy+XWyIfpG8Magv+rdeqISNxw=";
+
+  # Skip Next.js build (requires network for Google Fonts).
+  # Pre-built dist/ is copied from the npm tarball in preConfigure.
+  dontNpmBuild = true;
+
+  nativeBuildInputs = [
+    makeBinaryWrapper
+  ];
+
+  npmInstallFlags = [ "--ignore-scripts" ];
+
+  npmRebuildFlags = [ "--ignore-scripts" ];
+
+  env = {
+    HOME = "$TMPDIR";
+  };
+
+  preConfigure = ''
+    mkdir -p _npm_tmp
+    tar xzf ${npmTarball} -C _npm_tmp
+    cp -r _npm_tmp/package/dist .
+    rm -rf _npm_tmp
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/lib/node_modules/omniroute
+    cp -r . $out/lib/node_modules/omniroute/
+
+    mkdir -p $out/bin
+    makeWrapper "${nodejs_22}/bin/node" "$out/bin/omniroute" \
+      --add-flags "$out/lib/node_modules/omniroute/bin/omniroute.mjs"
+    makeWrapper "${nodejs_22}/bin/node" "$out/bin/omniroute-reset-password" \
+      --add-flags "$out/lib/node_modules/omniroute/bin/reset-password.mjs"
+
+    runHook postInstall
+  '';
+
+  passthru = {
+    category = "AI LLM Gateway";
+    updateScript = [
+      "nix-update"
+      "--flake"
+      ".#omniroute"
+    ];
+  };
+
+  meta = {
+    description = "Unified AI router with 160+ providers, RTK+Caveman compression, auto fallback, MCP/A2A, OpenAI-compatible APIs";
+    homepage = "https://github.com/diegosouzapw/OmniRoute";
+    changelog = "https://github.com/diegosouzapw/OmniRoute/releases/tag/v${finalAttrs.version}";
+    license = lib.licenses.mit;
+    mainProgram = "omniroute";
+    platforms = lib.platforms.all;
+  };
+})