refactor: simplify devcontainer configuration and remove workspace mount

.devcontainer/Dockerfile

@@ -2,16 +2,16 @@ FROM mcr.microsoft.com/devcontainers/base:ubuntu
 
 # Install Nix
 RUN apt-get update && apt-get install -y \
-    curl \
-    xz-utils \
-    sudo \
-    && rm -rf /var/lib/apt/lists/*
+  curl \
+  xz-utils \
+  sudo \
+  && rm -rf /var/lib/apt/lists/*
 
 # Create vscode user if it doesn't exist
 RUN if ! id -u vscode > /dev/null 2>&1; then \
-        useradd -m -s /bin/bash vscode && \
-        echo "vscode ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers; \
-    fi
+  useradd -m -s /bin/bash vscode && \
+  echo "vscode ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers; \
+  fi
 
 # Switch to vscode user for Nix installation
 USER vscode
@@ -22,12 +22,8 @@ RUN curl -L https://nixos.org/nix/install | sh -s -- --no-daemon
 
 # Add Nix to PATH and configure for the shell
 RUN echo '. /home/vscode/.nix-profile/etc/profile.d/nix.sh' >> /home/vscode/.bashrc && \
-    mkdir -p /home/vscode/.config/nix && \
-    echo 'experimental-features = nix-command flakes' >> /home/vscode/.config/nix/nix.conf
-
-# Set up workspace directory
-RUN sudo mkdir -p /workspace && sudo chown vscode:vscode /workspace
-WORKDIR /workspace
+  mkdir -p /home/vscode/.config/nix && \
+  echo 'experimental-features = nix-command flakes' >> /home/vscode/.config/nix/nix.conf
 
 # Keep container running
-CMD ["sleep", "infinity"]
+CMD ["sleep", "infinity"]

.devcontainer/devcontainer.json

@@ -15,9 +15,5 @@
     }
   },
   "postCreateCommand": "bash .devcontainer/post-create.sh",
-  "remoteUser": "vscode",
-  "mounts": [
-    "source=${localWorkspaceFolder},target=/workspace,type=bind,consistency=cached"
-  ],
-  "workspaceFolder": "/workspace"
+  "remoteUser": "vscode"
 }