fix: run prisma generate after skip-build install in Docker

The --mode=skip-build flag skips postinstall hooks including prisma
generate, so the Prisma client types are missing in web-builder and
backend-builder stages. Run prisma:generate explicitly after install.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: msukkari

Dockerfile

@@ -107,7 +107,8 @@ COPY ./packages/queryLanguage/package.json ./packages/queryLanguage/package.json
 COPY ./packages/backend/package.json ./packages/backend/package.json
 COPY ./packages/mcp/package.json ./packages/mcp/package.json
 
-RUN yarn install --mode=skip-build
+RUN yarn install --mode=skip-build && \
+    yarn workspace @sourcebot/db prisma:generate
 
 # Step 2: Copy pre-built shared libraries.
 COPY --from=shared-libs-builder /app/packages/db ./packages/db
@@ -157,7 +158,8 @@ COPY ./packages/queryLanguage/package.json ./packages/queryLanguage/package.json
 COPY ./packages/web/package.json ./packages/web/package.json
 COPY ./packages/mcp/package.json ./packages/mcp/package.json
 
-RUN yarn install --mode=skip-build
+RUN yarn install --mode=skip-build && \
+    yarn workspace @sourcebot/db prisma:generate
 
 # Step 2: Copy pre-built shared libraries and backend source.
 COPY --from=shared-libs-builder /app/packages/db ./packages/db