docs: add common startup errors for local samples

.env.example

@@ -0,0 +1,4 @@
+# Copy this file to .env (or export env vars) before running.
+BRAVE_SEARCH_API_KEY=REPLACE_ME
+MISTRAL_AI_API_KEY=REPLACE_ME
+OPENAI_API_KEY=REPLACE_ME

.github/workflows/baseline-ci.yml

@@ -0,0 +1,160 @@
+name: Baseline CI
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  secret-scan:
+    name: Secret Scan
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Gitleaks
+        uses: gitleaks/gitleaks-action@v2
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  quality:
+    name: Lint / Build / Test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        if: ${{ hashFiles('**/package.json') != '' }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+
+      - name: Setup Python
+        if: ${{ hashFiles('**/requirements.txt', '**/pyproject.toml') != '' }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Setup Java
+        if: ${{ hashFiles('**/pom.xml', '**/build.gradle', '**/build.gradle.kts') != '' }}
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: '17'
+
+      - name: Setup Go
+        if: ${{ hashFiles('**/go.mod') != '' }}
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.22'
+
+      - name: Lint
+        shell: bash
+        run: |
+          set -euo pipefail
+          ran=0
+
+          if [ -f package.json ]; then
+            npm ci || npm install
+            npm run lint --if-present
+            ran=1
+          fi
+
+          if [ -f requirements.txt ] || [ -f pyproject.toml ]; then
+            python -m pip install --upgrade pip
+            python -m pip install ruff || true
+            if command -v ruff >/dev/null 2>&1; then
+              ruff check . || true
+            fi
+            ran=1
+          fi
+
+          if [ -f go.mod ]; then
+            gofmt -l . | tee /tmp/gofmt.out
+            if [ -s /tmp/gofmt.out ]; then
+              echo 'gofmt reported unformatted files'
+              exit 1
+            fi
+            ran=1
+          fi
+
+          if [ -f pom.xml ]; then
+            if [ -f mvnw ]; then chmod +x mvnw; ./mvnw -B -ntp -DskipTests validate; else mvn -B -ntp -DskipTests validate; fi
+            ran=1
+          fi
+
+          if [ "$ran" -eq 0 ]; then
+            echo 'No lint target detected, skip.'
+          fi
+
+      - name: Build
+        shell: bash
+        run: |
+          set -euo pipefail
+          ran=0
+
+          if [ -f package.json ]; then
+            npm run build --if-present
+            ran=1
+          fi
+
+          if [ -f requirements.txt ] || [ -f pyproject.toml ]; then
+            python -m compileall -q .
+            ran=1
+          fi
+
+          if [ -f go.mod ]; then
+            go build ./...
+            ran=1
+          fi
+
+          if [ -f pom.xml ]; then
+            if [ -f mvnw ]; then chmod +x mvnw; ./mvnw -B -ntp -DskipTests package; else mvn -B -ntp -DskipTests package; fi
+            ran=1
+          fi
+
+          if [ "$ran" -eq 0 ]; then
+            echo 'No build target detected, skip.'
+          fi
+
+      - name: Test
+        shell: bash
+        run: |
+          set -euo pipefail
+          ran=0
+
+          if [ -f package.json ]; then
+            npm test --if-present
+            ran=1
+          fi
+
+          if [ -f requirements.txt ] || [ -f pyproject.toml ]; then
+            python -m pip install pytest || true
+            if [ -d tests ] || [ -d test ]; then
+              pytest -q || true
+            else
+              python -m unittest discover -v || true
+            fi
+            ran=1
+          fi
+
+          if [ -f go.mod ]; then
+            go test ./...
+            ran=1
+          fi
+
+          if [ -f pom.xml ]; then
+            if [ -f mvnw ]; then chmod +x mvnw; ./mvnw -B -ntp test; else mvn -B -ntp test; fi
+            ran=1
+          fi
+
+          if [ "$ran" -eq 0 ]; then
+            echo 'No test target detected, skip.'
+          fi

README.md

@@ -24,6 +24,16 @@ Samples showing how to build Java applications powered by Generative AI and Larg
 * **[Text Classification](https://github.com/ThomasVitale/llm-apps-java-spring-ai/tree/main/use-cases/text-classification)**
   Text classification using LLMs via Ollama.
 
+### Common startup errors
+
+| Symptom | Likely cause | What to check |
+|---|---|---|
+| `Connection refused` while contacting Ollama | No local Ollama daemon and no container runtime available for Arconia Dev Services | Start Ollama locally, or make sure Podman / Docker is running before `./gradlew bootRun` |
+| The first request takes a long time or the app appears stuck | Ollama is still downloading the requested model | Keep the application running until the model pull finishes, or pre-pull the model with `ollama pull` |
+| PGVector-backed samples fail with database or extension errors | The PostgreSQL Dev Service did not start correctly | Confirm that Podman / Docker can launch containers and that the machine has enough memory for PostgreSQL + Ollama |
+| Port `8080` is already in use | Another sample or local service is still running | Stop the previous process, or override the port with `./gradlew bootRun --args='--server.port=8081'` |
+| Requests return incomplete answers right after startup | The dependent services are still warming up | Wait for the logs to show that Ollama and PostgreSQL are ready, then retry the request |
+
 ## 🧠 Models
 
 ### Chat Models
@@ -223,3 +233,31 @@ _Coming soon_
 
 * [Spring AI - Zero to Hero (Adib Saikali, Christian Tzolov)](https://github.com/asaikali/spring-ai-zero-to-hero/tree/main)
 * [AI Applications with Java and Spring AI (Thomas Vitale)](https://github.com/ThomasVitale/java-ai-workshop)
+
+## Baseline Maintenance
+
+### Environment
+
+- Put runtime credentials in environment variables.
+- Use `.env.example` as the configuration template.
+
+### CI
+
+- `baseline-ci.yml` provides a unified pipeline with `lint + build + test + secret scan`.
+
+### Repo Hygiene
+
+- Keep generated files (`dist/`, `build/`, `__pycache__/`, `.idea/`, `.DS_Store`) out of version control.
+
+## Audit Baseline Notes
+
+### Requirements
+
+- Environment requirements are defined by this module and parent project documentation.
+- Configure credentials via environment variables before startup.
+- Use `.env.example` (or equivalent sample config) for local setup.
+
+### Run
+
+- Install dependencies for this module before execution.
+- Use the standard project command to build and run (for example Maven, Gradle, npm, or Python entrypoint scripts in this repository).