fix: resolve Docker build syntax errors (#1996) (#1999)

* fix: resolve Docker build syntax errors and merge conflicts

- Fix incomplete ARG HuggingFace declaration to ARG HuggingFace_API_KEY
- Fix invalid WORKDIR variable reference ${WORKDIR}/run to /app/run
- Resolve merge conflicts preserving both runtime and development stages
- Add proper development stage with corrected environment variables
- Ensure both dockerbuild and dockerbuild:prod targets work correctly

Resolves Docker build error: "target stage 'bolt-ai-development' could not be found"

🤖 Generated with [Claude Code](https://claude.ai/code)

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

* ci: add comprehensive Docker build validation to main CI pipeline

- Add docker-validation job to ci.yaml workflow
- Test both runtime (production) and development Docker targets
- Validate docker-compose configuration syntax
- Run on all PRs and pushes to catch Docker build issues early
- Set 15-minute timeout to prevent hanging builds
- Use --no-cache and --progress=plain for reliable validation

This ensures Docker build syntax errors like #1996 are caught in CI
before they reach main branch, preventing deployment failures.

🤖 Generated with [Claude Code](https://claude.ai/code)

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

* fix: use modern docker compose command syntax in CI

- Change docker-compose to docker compose (GitHub Actions uses Docker Compose v2)
- Fixes CI failure: docker-compose: command not found
- Ensures docker-compose validation works in GitHub Actions runners

---------

Co-authored-by: Claude <noreply@anthropic.com>

Dockerfile

@@ -54,3 +54,39 @@ HEALTHCHECK --interval=10s --timeout=3s --start-period=5s --retries=5 \
 
 # Start the Remix server
 CMD ["node", "build/server/index.js"]
+
+
+# ---- development stage ----
+FROM build AS development
+
+# Define environment variables for development
+ARG GROQ_API_KEY
+ARG HuggingFace_API_KEY
+ARG OPENAI_API_KEY
+ARG ANTHROPIC_API_KEY
+ARG OPEN_ROUTER_API_KEY
+ARG GOOGLE_GENERATIVE_AI_API_KEY
+ARG OLLAMA_API_BASE_URL
+ARG XAI_API_KEY
+ARG TOGETHER_API_KEY
+ARG TOGETHER_API_BASE_URL
+ARG VITE_LOG_LEVEL=debug
+ARG DEFAULT_NUM_CTX
+
+ENV GROQ_API_KEY=${GROQ_API_KEY} \
+    HuggingFace_API_KEY=${HuggingFace_API_KEY} \
+    OPENAI_API_KEY=${OPENAI_API_KEY} \
+    ANTHROPIC_API_KEY=${ANTHROPIC_API_KEY} \
+    OPEN_ROUTER_API_KEY=${OPEN_ROUTER_API_KEY} \
+    GOOGLE_GENERATIVE_AI_API_KEY=${GOOGLE_GENERATIVE_AI_API_KEY} \
+    OLLAMA_API_BASE_URL=${OLLAMA_API_BASE_URL} \
+    XAI_API_KEY=${XAI_API_KEY} \
+    TOGETHER_API_KEY=${TOGETHER_API_KEY} \
+    TOGETHER_API_BASE_URL=${TOGETHER_API_BASE_URL} \
+    AWS_BEDROCK_CONFIG=${AWS_BEDROCK_CONFIG} \
+    VITE_LOG_LEVEL=${VITE_LOG_LEVEL} \
+    DEFAULT_NUM_CTX=${DEFAULT_NUM_CTX} \
+    RUNNING_IN_DOCKER=true
+
+RUN mkdir -p /app/run
+CMD ["pnpm", "run", "dev", "--host"]