feat: Add Oghma RAG Proxy for SkyrimNet lore injection

RAG proxy that intercepts SkyrimNet LLM requests and enriches them
with relevant Tamrielic lore from CHIM's Oghma Infinium database.

Features:
- FastAPI proxy compatible with OpenAI API
- ChromaDB semantic search for lore retrieval
- NPC profile extraction from SkyrimNet prompts
- Google Sheets ingestion for CHIM's Oghma data
- Kubernetes deployment manifests
- Debug endpoint for RAG operation monitoring

Collections ingested to iris-dev ChromaDB:
- oghma_lore: 1951 entries (scholar knowledge)
- oghma_basic: 1949 entries (commoner knowledge)
- oghma_visual: 1151 entries (Omnisight perception)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

oghma-proxy/k8s/configmap.yaml

@@ -0,0 +1,50 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: oghma-proxy-config
+  namespace: nimmersky
+  labels:
+    app.kubernetes.io/name: oghma-proxy
+    app.kubernetes.io/part-of: nimmerverse
+data:
+  config.yaml: |
+    proxy:
+      host: 0.0.0.0
+      port: 8100
+      workers: 1
+
+    upstream:
+      # Configure via secret or environment variables
+      url: ${UPSTREAM_URL}
+      timeout: 120
+      stream_timeout: 300
+
+    chromadb:
+      # ChromaDB service - adjust based on your deployment
+      # Option 1: External (iris-dev VM)
+      host: iris-dev.eachpath.local
+      port: 35000
+      # Option 2: In-cluster ChromaDB
+      # host: chromadb.nimmersky.svc.cluster.local
+      # port: 8000
+      collection_lore: oghma_lore
+      collection_basic: oghma_basic
+
+    retrieval:
+      max_results: 5
+      min_score: 0.55
+      embedding_model: all-MiniLM-L6-v2
+
+    injection:
+      enabled: true
+      position: after_bio
+
+    logging:
+      level: INFO
+      format: json
+      log_injections: true
+
+    cache:
+      enabled: true
+      ttl_seconds: 300
+      max_size: 1000