diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 83707a4..b076eb0 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -1,4 +1,4 @@
-name: Build & Deploy (Nix)
+name: Build & Deploy (Bun)
 
 on:
   push:
@@ -25,26 +25,27 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v22
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
         with:
-          determinate: false
-          extra-conf: |
-            sandbox = false
-            accept-flake-config = true
+          bun-version: 1.3.14
 
-      - name: Cache Nix
-        uses: DeterminateSystems/magic-nix-cache-action@v14
+      - name: Install deps
+        run: bun install --frozen-lockfile
 
-      - name: Build zesdex
-        id: build
+      - name: Type-check
+        run: bun run check
+
+      - name: Test
+        run: bun test
+
+      - name: Build binary
         run: |
-          nix build .#default --impure --option sandbox false --print-build-logs
-          STORE_PATH=$(readlink result)
-          echo "store-path=$STORE_PATH" >> "$GITHUB_OUTPUT"
-          echo "Build OK: $STORE_PATH"
+          bun run build
+          test -x dist/zesdex && echo "binary OK ($(stat -c%s dist/zesdex) bytes)"
 
       - name: Setup SSH key
+        if: env.VPS_HOST != '' && env.VPS_HOST != 'null'
         env:
           SSH_KEY: ${{ secrets.SSH_PRIVATE_KEY }}
         run: |
@@ -56,6 +57,7 @@ jobs:
           ssh-keyscan -H "$VPS_HOST" >> ~/.ssh/known_hosts 2>/dev/null
 
       - name: Deploy zesdex to VPS
+        if: env.VPS_HOST != '' && env.VPS_HOST != 'null'
         run: |
-          STORE_PATH="${{ steps.build.outputs.store-path }}"
-          ssh "$VPS_USER@$VPS_HOST" "nix copy --to file:///nix/store $STORE_PATH && nix-env --install --force $STORE_PATH --profile /nix/var/nix/profiles/zesdex && systemctl restart zesdex"
+          scp dist/zesdex "$VPS_USER@$VPS_HOST:/usr/local/bin/zesdex"
+          ssh "$VPS_USER@$VPS_HOST" "chmod +x /usr/local/bin/zesdex && systemctl restart zesdex"
diff --git a/.github/workflows/flakehub-publish-rolling.yaml b/.github/workflows/flakehub-publish-rolling.yaml
deleted file mode 100644
index 34e96e7..0000000
--- a/.github/workflows/flakehub-publish-rolling.yaml
+++ /dev/null
@@ -1,20 +0,0 @@
-name: Publish to FlakeHub
-
-on:
-  push:
-    branches: [main, master]
-  workflow_dispatch:
-
-jobs:
-  flakehub-publish:
-    runs-on: ubuntu-latest
-    permissions:
-      id-token: write
-      contents: read
-    steps:
-      - uses: actions/checkout@v6
-      - uses: DeterminateSystems/determinate-nix-action@main
-      - uses: DeterminateSystems/flakehub-push@main
-        with:
-          visibility: public
-          rolling: true
diff --git a/default.nix b/default.nix
deleted file mode 100644
index a9d2e20..0000000
--- a/default.nix
+++ /dev/null
@@ -1,25 +0,0 @@
-{ pkgs ? import <nixpkgs> { } }:
-
-pkgs.rustPlatform.buildRustPackage {
-  pname = "zesdex";
-  version = "1.18.2";
-  src = ./.;
-
-  cargoLock = {
-    lockFile = ./Cargo.lock;
-  };
-
-  cargoBuildFlags = [ "-p" "zesdex-gateway" "--bin" "zesdex" ];
-
-  nativeBuildInputs = with pkgs; [ pkg-config ];
-  buildInputs = with pkgs; [ openssl sqlite ];
-
-  doCheck = false;
-
-  meta = with pkgs.lib; {
-    description = "AI-native coding agent with workflow orchestration";
-    homepage = "https://github.com/asepharyana/zesdex";
-    license = licenses.mit;
-    mainProgram = "zesdex";
-  };
-}
diff --git a/docker-compose.yml b/docker-compose.yml
index 6768163..99b4e6d 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -12,7 +12,7 @@ services:
       - ./workspace:/workspace:ro
     environment:
       - ZESDEX_DATA_DIR=/data
-      - RUST_LOG=${RUST_LOG:-info}
+      - ZESDEX_API_PORT=${ZESDEX_API_PORT:-8080}
     stdin_open: true
     tty: true
     # For daemon mode, expose the IPC socket directory
diff --git a/flake.nix b/flake.nix
deleted file mode 100644
index 41626d9..0000000
--- a/flake.nix
+++ /dev/null
@@ -1,60 +0,0 @@
-{
-  description = "Zesdex — AI-native coding agent";
-
-  inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
-    flake-utils.url = "github:numtide/flake-utils";
-    rust-overlay = {
-      url = "github:oxalica/rust-overlay";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
-  };
-
-  outputs = { self, nixpkgs, flake-utils, rust-overlay }:
-    flake-utils.lib.eachSystem [ "x86_64-linux" ] (system:
-      let
-        overlays = [ (import rust-overlay) ];
-        pkgs = import nixpkgs { inherit system overlays; };
-        rustToolchain = pkgs.rust-bin.stable.latest.default.override {
-          extensions = [ "rust-src" "rust-analyzer" "clippy" ];
-        };
-      in
-      {
-        devShells.default = pkgs.mkShell {
-          buildInputs = with pkgs; [
-            rustToolchain
-            pkg-config
-            openssl
-            sqlite
-          ];
-
-          RUST_SRC_PATH = "${rustToolchain}/lib/rustlib/src/rust/library";
-          RUST_LOG = "info";
-        };
-
-        packages.default = pkgs.rustPlatform.buildRustPackage {
-          pname = "zesdex";
-          version = "1.18.2";
-          src = ./.;
-
-          cargoLock = {
-            lockFile = ./Cargo.lock;
-          };
-
-          # Build only the main binary
-          cargoBuildFlags = [ "-p" "zesdex-gateway" "--bin" "zesdex" ];
-
-          nativeBuildInputs = with pkgs; [ pkg-config perl ];
-          buildInputs = with pkgs; [ openssl sqlite ];
-
-          doCheck = false; # Tests require filesystem access
-
-          meta = with pkgs.lib; {
-            description = "AI-native coding agent with workflow orchestration";
-            homepage = "https://github.com/asepharyana/zesdex";
-            license = licenses.mit;
-            mainProgram = "zesdex";
-          };
-        };
-      });
-}
diff --git a/shell.nix b/shell.nix
deleted file mode 100644
index 720fa6e..0000000
--- a/shell.nix
+++ /dev/null
@@ -1,17 +0,0 @@
-{ pkgs ? import <nixpkgs> { } }:
-
-with pkgs;
-
-mkShell {
-  buildInputs = [
-    (rust-bin.stable.latest.default.override {
-      extensions = [ "rust-src" "rust-analyzer" "clippy" ];
-    })
-    pkg-config
-    openssl
-    sqlite
-  ];
-
-  RUST_SRC_PATH = "${rust-bin.stable.latest.default}/lib/rustlib/src/rust/library";
-  RUST_LOG = "info";
-}