feat(openviking): pilot deployment to fastpass (wave 8)

Platform Knowledge Infrastructure pilot - context database for large
file trees, shared skills, and long-term logs to reduce agent token
consumption. Pilot scope: two corpora (hermes/ skills library,
personal/homelab/), two consumer profiles (Wong, Shuri) for before/after
token comparison.

- namespace.yaml: openviking namespace, sync-wave 8 (after Harbor wave 7)
- externalsecret.yaml: credentials from 1Password via onepassword-connect
  ClusterSecretStore (Wong, t_32766900)
- values.yaml: Helm overrides - px-fa-direct-access storage (30Gi),
  embedding (nomic-embed-text-v1.5) + VLM (Llama-3.1-8B) via astro-orbiter
  router (:8002), internal-only ingress
- application.yaml: multi-source ArgoCD Application, Harbor pattern
  (Peter Parker, t_eefdcc17 + reconciled in t_3e54efa8)

Prerequisites verified complete before this commit:
- nomic-embed-text-v1.5-Q4_K_M live on astro-orbiter router (War Machine,
  t_34b96e83, commit ad70b34)
- All 3 1Password items provisioned (root/embedding/vlm api keys)
- Storage class corrected to px-fa-direct-access after live PV audit
  showed pure-block/pure-file have zero provisioned volumes (t_77b3ff79)
- Dry-run validated against live cluster prior to commit

Constraint: vault (~/friday) remains canonical source of truth; OpenViking
index is a derived cache, rebuilt from vault source files.

Honcho/lincoln explicitly out of scope for this work.

cluster/platform/openviking/namespace.yaml

@@ -0,0 +1,8 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: openviking
+  annotations:
+    # Wave 8: OpenViking deployment (after Harbor at Wave 7)
+    # Depends on: cert-manager, nginx-ingress, External Secrets Operator
+    argocd.argoproj.io/sync-wave: "8"