docs: Add spdy.io infrastructure credentials

docs/SPDY_INFRASTRUCTURE.md

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+# CannaIQ Infrastructure (spdy.io)
+
+External services for the spdy.io Kubernetes cluster. **Do not create containers for these.**
+
+## PostgreSQL
+
+| Setting  | Value                |
+|----------|----------------------|
+| Host     | 10.100.6.50          |
+| Port     | 5432                 |
+| Database | cannaiq              |
+| Username | cannaiq              |
+| Password | SpDyCannaIQ2024      |
+
+```bash
+# Connection string
+DATABASE_URL=postgres://cannaiq:SpDyCannaIQ2024@10.100.6.50:5432/cannaiq
+
+# Test connection
+PGPASSWORD='SpDyCannaIQ2024' psql -h 10.100.6.50 -p 5432 -U cannaiq -d cannaiq -c "SELECT 1"
+```
+
+## Redis
+
+| Setting  | Value          |
+|----------|----------------|
+| Host     | 10.100.9.50    |
+| Port     | 6379           |
+| Password | SpDyR3d1s2024! |
+
+```bash
+# Connection URL
+REDIS_URL=redis://:SpDyR3d1s2024!@10.100.9.50:6379
+
+# Node.js .env
+REDIS_HOST=10.100.9.50
+REDIS_PORT=6379
+REDIS_PASSWORD=SpDyR3d1s2024!
+```
+
+## MinIO (S3-Compatible Storage)
+
+| Setting        | Value            |
+|----------------|------------------|
+| Endpoint       | 10.100.9.80:9000 |
+| Console        | 10.100.9.80:9001 |
+| Region         | us-east-1        |
+| Use Path Style | true             |
+
+### CannaIQ Bucket
+
+| Setting    | Value          |
+|------------|----------------|
+| Bucket     | cannaiq        |
+| Access Key | cannaiq-app    |
+| Secret Key | cannaiq-secret |
+
+```bash
+# Node.js .env
+MINIO_ENDPOINT=10.100.9.80
+MINIO_PORT=9000
+MINIO_ACCESS_KEY=cannaiq-app
+MINIO_SECRET_KEY=cannaiq-secret
+MINIO_BUCKET=cannaiq
+MINIO_USE_SSL=false
+```
+
+### Cannabrands Bucket
+
+| Setting    | Value                                    |
+|------------|------------------------------------------|
+| Bucket     | cannabrands                              |
+| Access Key | cannabrands-app                          |
+| Secret Key | cdbdcd0c7b6f3994d4ab09f68eaff98665df234f |
+
+## Kubernetes Secrets
+
+Create secrets in the `cannaiq` namespace:
+
+```bash
+# Database
+kubectl create secret generic db-credentials -n cannaiq \
+  --from-literal=DATABASE_URL='postgres://cannaiq:SpDyCannaIQ2024@10.100.6.50:5432/cannaiq'
+
+# Redis
+kubectl create secret generic redis-credentials -n cannaiq \
+  --from-literal=REDIS_URL='redis://:SpDyR3d1s2024!@10.100.9.50:6379'
+
+# MinIO
+kubectl create secret generic minio-credentials -n cannaiq \
+  --from-literal=MINIO_ACCESS_KEY='cannaiq-app' \
+  --from-literal=MINIO_SECRET_KEY='cannaiq-secret'
+```
+
+## Network
+
+All services are on the `10.100.x.x` internal network:
+
+| Service    | IP           | Port |
+|------------|--------------|------|
+| PostgreSQL | 10.100.6.50  | 5432 |
+| Redis      | 10.100.9.50  | 6379 |
+| MinIO      | 10.100.9.80  | 9000 |
+| Registry   | 10.100.9.70  | 5000 |