refactor: make devcontainer configuration portable and user-agnostic

Improve devcontainer robustness by eliminating hardcoded paths and user assumptions:

devcontainer.json changes:
- Replace hardcoded /workspaces/velxio paths with ${containerWorkspaceFolder} variable
- Ensures compatibility with GitHub Codespaces and other workspace path variations
- Update all volume mount targets and PATH environment variable to use dynamic paths

post-create.sh improvements:
- Dynamically detect workspace root from script location instead of assuming /workspaces/velxio
- Use $(whoami) to get current user instead of hardcoding 'vscode' user
- Replace absolute paths with relative paths for all operations
- Makes script work correctly in any devcontainer environment (VS Code, Codespaces, Gitpod)

post-start.sh improvements:
- Apply same dynamic workspace root detection pattern
- Use current user instead of hardcoded 'vscode' for chown operations
- Ensures ownership fixes work regardless of container user configuration

These changes enable the devcontainer to work seamlessly across different hosting environments without requiring manual configuration adjustments.

.devcontainer/devcontainer.json

@@ -20,17 +20,17 @@
   "remoteUser": "vscode",
   "waitFor": "postCreateCommand",
   "mounts": [
-    "source=${localWorkspaceFolder}/wokwi-libs,target=/workspaces/velxio/wokwi-libs,type=bind,consistency=cached",
+    "source=${localWorkspaceFolder}/wokwi-libs,target=${containerWorkspaceFolder}/wokwi-libs,type=bind,consistency=cached",
     "source=velxio-arduino-cache,target=/home/vscode/.arduino15,type=volume",
-    "source=velxio-frontend-nodemodules,target=/workspaces/velxio/frontend/node_modules,type=volume",
+    "source=velxio-frontend-nodemodules,target=${containerWorkspaceFolder}/frontend/node_modules,type=volume",
-    "source=velxio-avr8js-nodemodules,target=/workspaces/velxio/wokwi-libs/avr8js/node_modules,type=volume",
+    "source=velxio-avr8js-nodemodules,target=${containerWorkspaceFolder}/wokwi-libs/avr8js/node_modules,type=volume",
-    "source=velxio-rp2040js-nodemodules,target=/workspaces/velxio/wokwi-libs/rp2040js/node_modules,type=volume",
+    "source=velxio-rp2040js-nodemodules,target=${containerWorkspaceFolder}/wokwi-libs/rp2040js/node_modules,type=volume",
-    "source=velxio-wokwi-elements-nodemodules,target=/workspaces/velxio/wokwi-libs/wokwi-elements/node_modules,type=volume"
+    "source=velxio-wokwi-elements-nodemodules,target=${containerWorkspaceFolder}/wokwi-libs/wokwi-elements/node_modules,type=volume"
   ],
   "postCreateCommand": "bash .devcontainer/post-create.sh",
   "postStartCommand": "bash .devcontainer/post-start.sh",
   "remoteEnv": {
-    "PATH": "${containerEnv:PATH}:/workspaces/velxio/frontend/node_modules/.bin:/workspaces/velxio/backend/venv/bin"
+    "PATH": "${containerEnv:PATH}:${containerWorkspaceFolder}/frontend/node_modules/.bin:${containerWorkspaceFolder}/backend/venv/bin"
   },
   "forwardPorts": [5173, 8001],
   "portsAttributes": {

.devcontainer/post-create.sh

@@ -1,15 +1,20 @@
 #!/bin/bash
 set -e
 
-cd /workspaces/velxio
+# Get the workspace root (devcontainer sets this as pwd, but we can also derive it from script location)
+WORKSPACE_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$WORKSPACE_ROOT"
+
+# Get current user dynamically
+CURRENT_USER=$(whoami)
 
 echo "==> Fixing ownership for mounted volumes..."
 # Fix ownership of directories that are mounted as volumes
-sudo chown -R vscode:vscode /workspaces/velxio/frontend/node_modules 2>/dev/null || true
+sudo chown -R "$CURRENT_USER:$CURRENT_USER" frontend/node_modules 2>/dev/null || true
-sudo chown -R vscode:vscode /workspaces/velxio/wokwi-libs/avr8js/node_modules 2>/dev/null || true
+sudo chown -R "$CURRENT_USER:$CURRENT_USER" wokwi-libs/avr8js/node_modules 2>/dev/null || true
-sudo chown -R vscode:vscode /workspaces/velxio/wokwi-libs/rp2040js/node_modules 2>/dev/null || true
+sudo chown -R "$CURRENT_USER:$CURRENT_USER" wokwi-libs/rp2040js/node_modules 2>/dev/null || true
-sudo chown -R vscode:vscode /workspaces/velxio/wokwi-libs/wokwi-elements/node_modules 2>/dev/null || true
+sudo chown -R "$CURRENT_USER:$CURRENT_USER" wokwi-libs/wokwi-elements/node_modules 2>/dev/null || true
-sudo chown -R vscode:vscode /home/vscode/.arduino15 2>/dev/null || true
+sudo chown -R "$CURRENT_USER:$CURRENT_USER" "$HOME/.arduino15" 2>/dev/null || true
 
 echo "==> Installing arduino-cli..."
 if ! command -v arduino-cli &> /dev/null; then
@@ -31,28 +36,28 @@ if ! sudo arduino-cli core list | grep -q "rp2040:rp2040"; then
 fi
 
 echo "==> Setting up Python virtual environment (base layer)..."
-(cd /workspaces/velxio/backend
+(cd backend
 python3 -m venv venv
 ./venv/bin/pip install wheel setuptools
 ./venv/bin/pip install -r requirements.txt) &
 
 echo "==> Installing frontend dependencies..."
-(cd /workspaces/velxio/frontend
+(cd frontend
 HUSKY=0 npm install) &
 
 echo "==> Building wokwi-libs..."
 # Local wokwi-libs are cloned from GitHub instead of using npm packages.
 # This allows us to modify the emulators and components for Velxio-specific behavior.
 # Build outputs go to dist/ directories and are resolved via Vite aliases.
-(cd /workspaces/velxio/wokwi-libs/avr8js
+(cd wokwi-libs/avr8js
 HUSKY=0 npm install
 npm run build) &
 
-(cd /workspaces/velxio/wokwi-libs/rp2040js
+(cd wokwi-libs/rp2040js
 HUSKY=0 npm install
 npm run build) &
 
-(cd /workspaces/velxio/wokwi-libs/wokwi-elements
+(cd wokwi-libs/wokwi-elements
 HUSKY=0 npm install
 npm run build) &
 

.devcontainer/post-start.sh

@@ -1,16 +1,21 @@
 #!/bin/bash
 set -e
 
-cd /workspaces/velxio
+# Get the workspace root
+WORKSPACE_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$WORKSPACE_ROOT"
+
+# Get current user dynamically
+CURRENT_USER=$(whoami)
 
 echo "==> Fixing ownership for mounted volumes..."
-sudo chown -R vscode:vscode /workspaces/velxio/frontend/node_modules 2>/dev/null || true
+sudo chown -R "$CURRENT_USER:$CURRENT_USER" frontend/node_modules 2>/dev/null || true
 
 echo "==> Syncing Python dependencies..."
-(cd /workspaces/velxio/backend
+(cd backend
 source venv/bin/activate
 pip install -q -r requirements.txt)
 
 echo "==> Syncing frontend dependencies..."
-cd /workspaces/velxio/frontend
+cd frontend
 HUSKY=0 npm install