ci: add standalone Nix build + deploy workflow; remove parent notify

Repo is now self-contained: flake.nix (Next.js build) + deploy.yml
(nix build -> nix copy -> nix-env profile -> systemctl restart hub).
No longer dispatches submodule-updated to asepharyana-hub.

.github/workflows/deploy.yml

@@ -0,0 +1,75 @@
+name: Deploy Hub
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+concurrency:
+  group: hub-deploy
+  cancel-in-progress: false
+
+permissions:
+  contents: read
+  id-token: write
+
+env:
+  VPS_HOST: ${{ secrets.VPS_HOST }}
+  VPS_USER: ${{ secrets.VPS_USER }}
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    steps:
+      - uses: actions/checkout@v7
+        with:
+          fetch-depth: 0
+
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@v22
+        with:
+          determinate: false
+          extra-conf: |
+            sandbox = false
+            accept-flake-config = true
+
+      - name: Cache Nix
+        uses: DeterminateSystems/magic-nix-cache-action@v14
+        with:
+          use-flakehub: false
+
+      - name: Build hub
+        id: build
+        run: |
+          nix build .#hub --impure --option sandbox false --print-build-logs
+          STORE_PATH=$(readlink result)
+          echo "store-path=$STORE_PATH" >> "$GITHUB_OUTPUT"
+          echo "✅ hub: $STORE_PATH"
+
+      - name: Setup SSH key
+        if: github.ref == 'refs/heads/main'
+        env:
+          SSH_KEY: ${{ secrets.SSH_PRIVATE_KEY }}
+        run: |
+          mkdir -p ~/.ssh
+          echo "$SSH_KEY" > ~/.ssh/id_ed25519
+          chmod 600 ~/.ssh/id_ed25519
+          sed -i 's/\r$//' ~/.ssh/id_ed25519
+          ssh-keygen -y -f ~/.ssh/id_ed25519 >/dev/null 2>&1 || { echo "SSH key invalid"; exit 1; }
+          ssh-keyscan -H "$VPS_HOST" >> ~/.ssh/known_hosts 2>/dev/null
+
+      - name: Deploy hub to VPS
+        if: github.ref == 'refs/heads/main'
+        run: |
+          STORE_PATH="${{ steps.build.outputs.store-path }}"
+          echo "=== Copying hub: $STORE_PATH ==="
+          nix copy --to "ssh://${{ secrets.VPS_USER }}@${{ secrets.VPS_HOST }}" "$STORE_PATH"
+
+          echo "=== Updating profile ==="
+          ssh "$VPS_USER@$VPS_HOST" "sudo /nix/var/nix/profiles/default/bin/nix-env --profile /nix/var/nix/profiles/hub --set '$STORE_PATH'"
+
+          echo "=== Restarting service ==="
+          ssh "$VPS_USER@$VPS_HOST" "sudo systemctl restart hub" || echo "  ⚠️ restart failed (may not be enabled yet)"
+
+          echo "✅ hub deployed"

.github/workflows/notify-parent.yml

@@ -1,25 +0,0 @@
-name: Notify Parent Repo
-
-on:
-  push:
-    branches:
-      - main
-  workflow_dispatch:
-
-jobs:
-  dispatch:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Trigger root monorepo build
-        uses: peter-evans/repository-dispatch@v3
-        with:
-          token: ${{ secrets.DISPATCH_TOKEN }}
-          repository: asepharyana/asepharyana-hub
-          event-type: submodule-updated
-          client-payload: |
-            {
-              "service": "hub",
-              "ref": "${{ github.ref }}",
-              "sha": "${{ github.sha }}",
-              "actor": "${{ github.actor }}"
-            }

flake.nix

@@ -0,0 +1,70 @@
+{
+  description = "Asepharyana Hub — personal portfolio SPA (Next.js)";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachSystem [ "x86_64-linux" ] (system:
+      let
+        pkgs = import nixpkgs {
+          inherit system;
+          config.allowUnfree = true;
+        };
+
+        hub = pkgs.stdenv.mkDerivation {
+          name = "hub-0.1.0";
+          src = ./.;
+
+          nativeBuildInputs = with pkgs; [ bun nodejs-slim_22 ];
+          buildInputs = with pkgs; [ nodejs openssl stdenv.cc.cc.lib libffi ];
+
+          LIBCLANG_PATH = "${pkgs.libclang.lib}/lib";
+          LD_LIBRARY_PATH = "${pkgs.libclang.lib}/lib:${pkgs.stdenv.cc.cc.lib}/lib:${pkgs.libffi}/lib";
+          NIX_ENFORCE_PURITY = "0";
+
+          SSL_CERT_FILE = "${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt";
+          NODE_EXTRA_CA_CERTS = "${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt";
+          NODE_ENV = "production";
+
+          phases = [ "unpackPhase" "buildPhase" "installPhase" ];
+          buildPhase = ''
+            export HOME="$TMPDIR"
+            echo "=== Installing dependencies ==="
+            bun install 2>&1
+            echo "=== Building Next.js ==="
+            bun run build 2>&1
+          '';
+          installPhase = ''
+            mkdir -p $out/share/hub $out/bin
+            cp -r .next $out/share/hub/
+            cp -r public $out/share/hub/ 2>/dev/null || true
+            cp package.json $out/share/hub/
+            cp next.config.{ts,mjs,js} $out/share/hub/ 2>/dev/null || true
+            cp -r node_modules $out/share/hub/
+            cat > $out/bin/hub << WRAPPER
+#!${pkgs.runtimeShell}
+exec ${pkgs.bun}/bin/bun run --cwd $out/share/hub start
+WRAPPER
+            chmod +x $out/bin/hub
+          '';
+        };
+      in
+      {
+        packages = {
+          inherit hub;
+          default = hub;
+        };
+
+        apps.hub = {
+          type = "app";
+          program = "${hub}/bin/hub";
+        };
+
+        devShells.default = pkgs.mkShell {
+          buildInputs = with pkgs; [ nodejs-slim_22 bun ];
+        };
+      });
+}