feat: add AWS Lambda and Snowflake feedback pipeline

Author: CoreyLeath-code

.env.example

@@ -6,3 +6,6 @@ MAX_CONCURRENT_INFERENCES=8
 CACHE_TTL_SECONDS=30
 REQUESTS_PER_MINUTE=120
 LOG_LEVEL=INFO
+# Optional durable feedback pipeline. Leave FEEDBACK_QUEUE_URL unset for local structured logs.
+FEEDBACK_QUEUE_URL=
+AWS_REGION=us-east-1

.github/workflows/aws-snowflake-validation.yml

@@ -0,0 +1,63 @@
+name: AWS Lambda + Snowflake Validation
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  contract-tests:
+    name: Serverless and warehouse contracts
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+          cache: pip
+
+      - name: Install validation dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install 'boto3>=1.34,<2' 'pytest>=8,<10' 'ruff>=0.9,<1'
+
+      - name: Lint integration code
+        run: >-
+          ruff check
+          app/core/feedback_sink.py
+          serverless/feedback_ingestion
+          scripts/validate_aws_snowflake_assets.py
+          tests/test_aws_snowflake_feedback.py
+
+      - name: Run credential-free integration contracts
+        run: pytest -q tests/test_aws_snowflake_feedback.py
+
+      - name: Validate AWS and Snowflake assets
+        run: python scripts/validate_aws_snowflake_assets.py
+
+  terraform-validation:
+    name: Terraform static validation
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Terraform
+        uses: hashicorp/setup-terraform@v3
+        with:
+          terraform_version: '1.9.8'
+
+      - name: Check Terraform formatting
+        run: terraform fmt -check -recursive infra/aws
+
+      - name: Initialize providers without backend
+        run: terraform -chdir=infra/aws init -backend=false
+
+      - name: Validate Terraform
+        run: terraform -chdir=infra/aws validate

.gitignore

@@ -29,3 +29,7 @@ data/
 testtmp/
 benchmark-results.json
 coverage.xml
+.terraform/
+*.tfstate
+*.tfstate.*
+infra/aws/feedback_ingestion.zip