ci: parallelise secret CI, cache HF dataset, speed up docker build (The-OpenROAD-Project#291)

- Split monolithic build-backend-docker job into lint-backend,
  lint-frontend, lint-evaluation (ubuntu-latest), test, and
  docker-eval jobs; lint jobs run free runners in parallel
- Remove redundant HF source_list.json download from test step
- Add docker-compose.ci.yml override: skips HF clone via
  SKIP_HF_DOWNLOAD build arg, bind-mounts pre-downloaded ./data,
  reduces healthcheck start_period from 1200s to 300s
- Add docker-up-ci / docker-down-ci Makefile targets using the
  CI compose override
- Use pytest -n auto in make test to parallelise 349 tests via
  already-installed pytest-xdist
- Add SKIP_HF_DOWNLOAD ARG to backend/Dockerfile so production
  builds still clone the dataset; CI skips it and mounts instead
- Change uv sync --dev to uv sync in Dockerfile to omit dev
  tools from the production image

Signed-off-by: Jack Luar <jluar@precisioninno.com>

Author: luarss

.github/workflows/ci-secret.yaml

@@ -100,9 +100,6 @@ jobs:
       run: |
         if [ ! -d "data" ] || [ -z "$(ls -A data 2>/dev/null)" ]; then
           uv tool install huggingface-hub
-          huggingface-cli download The-OpenROAD-Project/ORAssistant_RAG_Dataset \
-            --local-dir ./data
-          echo "Dataset downloaded"
         else
           echo "Dataset already cached on runner, skipping download"
         fi
@@ -130,6 +127,7 @@ jobs:
     - name: Build and start Docker stack
       run: |
         make docker-up-ci
+<<<<<<< HEAD
 
     - name: Wait for graph readiness
       run: |
@@ -142,6 +140,8 @@ jobs:
           echo "Waiting for graph initialization... ($i/180)"
           sleep 10
         done
+=======
+>>>>>>> a197ec61 (ci: parallelise secret CI, cache HF dataset, speed up docker build (#291))
 
     - name: Wait for graph readiness
       run: |