Remove npm build as its done by build.rs

Containerfile.run

@@ -25,9 +25,6 @@ COPY ./Cargo.lock ./
 COPY ./Cargo.toml ./
 COPY ./dp.py ./
 
-# Build dashboard assets explicitly to ensure dist exists
-RUN npm ci --prefix reminder-dashboard && npm run build --prefix reminder-dashboard
-
 # Build and install the Rust binary
 RUN cargo install --path .