fix: remove unused env variable

run.sh

@@ -38,21 +38,6 @@ mkdir -p \
     "$NPM_CACHE" \
     "$PIP_CACHE"
 
-START_DIR="${1:-$PROJECTS_DIR}"
-shift || true
-
-if [[ "$START_DIR" = /* ]]; then
-  if [[ "$START_DIR" == "$PROJECTS_DIR"* ]]; then
-    REL="${START_DIR#"$PROJECTS_DIR"}"
-    START_DIR="/workspace${REL}"
-  else
-    echo "Absolute paths outside $PROJECTS_DIR require --mount and are not accepted as the initial directory." >&2
-    exit 2
-  fi
-else
-  START_DIR="/workspace/${START_DIR#./}"
-fi
-
 ARGS=(
   run --rm -it
   --name opencode-dev
@@ -64,8 +49,6 @@ ARGS=(
   --security-opt=no-new-privileges
   --cap-drop=ALL
 
-  -e "START_DIR=${START_DIR}"
-
   -v "$OPC_CONFIG:/home/dev/.config/opencode:rw"
   -v "$OPC_DATA:/home/dev/.local/share/opencode:rw"
   -v "$OPC_CACHE:/home/dev/.cache/opencode:rw"