Adds complete k8s manifests, ArgoCD app, and Terraform namespace
resources for the Neuron swarm self-improvement loop system.
Each variant (alpha, beta, gamma) gets its own isolated namespace,
PVC, MCP/REST deployments, ExternalSecrets from Vault, RBAC for CI,
and a SQLite clone Job template for session startup.
Adds the neuron-tim namespace (via Terraform) and a full Argo CD
app + k8s manifests mirroring neuron-prod. All deployments set to
replicas=0 — nothing runs until Tim's imprint is ready and Vault
secrets are populated at secret/neuron-technologies/tim.