feat(P27): validated per-module examples (D-058) + schema glob fix

Add modules/<name>/examples/ directories with simple.yaml + complex.yaml
(+ mysql.yaml for RDS) for every primitive and module pattern. All 25
example contracts validate against schemas/contract.schema.json. Update
the contract schema to allow object/array input values (for env vars).
Fix the platform-test schema-validation glob to modules/*/*/examples/*.yaml
to match the nested l1/l2 path structure. Update the microservice sample
contract note (env objects now permitted by the schema).

---ci---
project: acdl
phase: 27
milestone: v1.7
status: execute
---/ci---

modules/l2/microservice/examples/complex.yaml

@@ -0,0 +1,12 @@
+# Complex microservice with ALB + env vars + health check
+uses: acdl/pipelines/deploy.yaml@v1.6
+module: microservice
+environment: dev
+inputs:
+  bucket_name: my-production-microservice
+  region: us-east-1
+  image: public.ecr.aws/docker/library/nginx:latest
+  port: 8080
+  env:
+    LOG_LEVEL: info
+    ENVIRONMENT: production

modules/l2/microservice/examples/simple.yaml

@@ -0,0 +1,9 @@
+# Simple microservice deployment (minimal Fargate, no ALB)
+uses: acdl/pipelines/deploy.yaml@v1.6
+module: microservice
+environment: dev
+inputs:
+  bucket_name: my-microservice-demo
+  region: us-east-1
+  image: public.ecr.aws/docker/library/nginx:latest
+  port: 80