fix(deployments): fix broken config mount and expand env example

- Fix docker-compose.yaml: mount config.dev.yaml instead of nonexistent
  configs/config.yaml
- Add deployments/config.dev.yaml with Docker service names and dev
  defaults for zero-setup make docker-up
- Expand .env.example with all SILO_* and LDAP_* variables
- Update config.example.yaml hostnames to localhost with Docker comments
- Add deployments/config.docker.yaml to .gitignore (generated file)

deployments/config.dev.yaml

@@ -0,0 +1,35 @@
+# Silo Development Configuration
+# Used by deployments/docker-compose.yaml — works with zero setup via `make docker-up`.
+# For production Docker installs, run scripts/setup-docker.sh instead.
+
+server:
+  host: "0.0.0.0"
+  port: 8080
+  base_url: "http://localhost:8080"
+
+database:
+  host: "postgres"
+  port: 5432
+  name: "silo"
+  user: "silo"
+  password: "${POSTGRES_PASSWORD:-silodev}"
+  sslmode: "disable"
+  max_connections: 10
+
+storage:
+  endpoint: "minio:9000"
+  access_key: "${MINIO_ACCESS_KEY:-silominio}"
+  secret_key: "${MINIO_SECRET_KEY:-silominiosecret}"
+  bucket: "silo-files"
+  use_ssl: false
+  region: "us-east-1"
+
+schemas:
+  directory: "/etc/silo/schemas"
+  default: "kindred-rd"
+
+freecad:
+  uri_scheme: "silo"
+
+auth:
+  enabled: false

deployments/docker-compose.yaml

@@ -69,7 +69,7 @@ services:
       - "8080:8080"
     volumes:
       - ../schemas:/etc/silo/schemas:ro
-      - ../configs/config.yaml:/etc/silo/config.yaml:ro
+      - ./config.dev.yaml:/etc/silo/config.yaml:ro
     healthcheck:
       test: ["CMD", "wget", "-qO-", "http://localhost:8080/health"]
       interval: 10s