N0: rename Hermes → Nomos (standalone commit)

Problem: "Hermes" collides with Nous Researchs unrelated product;
  unclear identity for the resident agent.

  Change: Rename the live service identity across 39 files:
  - cmd/hermes/ → cmd/nomos/ (binary, env vars NOMOS_*)
  - internal/config/ server.go (NomosAgentSlug, nomosAgentID)
  - compose/hermes/ → compose/nomos/ (Dockerfile, service name)
  - hermes/ → nomos/ (SOUL.md, config.yaml, skills/)
  - .agents/HERMES.md → NOMOS.md (persona)
  - tools/setup-hermes-soul.sh → setup-nomos-soul.sh
  - seeds/inventory.yaml (agent:hermes → agent:nomos)
  - migrations/014_rename_agent_hermes_to_nomos.up.sql
  - Caddy vhost hermes.hubris.network → nomos.hubris.network
  - All referencing docs, scripts, ADR notes

  History preserved: archive/, plans/done/, ADRs not rewritten.
  Matrix @hermes notifier account and Legacy bin/hermes on LXC 129
  intentionally untouched (out of scope).

  Risk: N0 is identity-only rename; zero behavioral changes.
  Verification: go build ./... passes; docker compose --profile full
  resolves nomos service; grep -ri hermes (excluding archive/plans)
  returns only intentional refs (LLM model name, Matrix user).

AGENTS.md

@@ -124,9 +124,9 @@ per the DB-as-source-of-truth plan.
 
 ## 5. Acting on the homelab
 
-- **Read state**: use MCP tools. Hermes (the AI agent) is the primary
+- **Read state**: use MCP tools. Nomos (the AI agent) is the primary
   operator interface — it has 21 MCP tools for observe/orient/decide/act.
-- **Actions** (restart, logs, apt, pct exec): Hermes calls `request_execution`
+- **Actions** (restart, logs, apt, pct exec): Nomos calls `request_execution`
   via MCP. `reversible_low` actions execute immediately; `config_mutation`
   and `destructive` actions are queued for operator approval via Matrix.
 - **Secrets**: managed by Infisical (`oikos secret` subcommand for migration).
@@ -152,10 +152,10 @@ Currently auto-setup:
 - **Caveman + templates** (`tools/setup-caveman.sh`): Installs Caveman npm
   package, wrapper scripts, and compact output templates for token-efficient
   CLI output. Wrapper at `~/bin/caveman_wrapper.sh`.
-- **Hermes agent persona** (`tools/setup-hermes-soul.sh`): Provisions
-  `~/.hermes/SOUL.md` from `HERMES.md` on Hermes agents. This ensures every
-  Hermes agent follows the canonical homelab persona (token efficiency, source
-  of truth hierarchy). No-op on non-Hermes agents.
+- **Nomos agent persona** (`tools/setup-nomos-soul.sh`): Provisions
+  `~/.nomos/SOUL.md` from `NOMOS.md` on Nomos agents. This ensures every
+  Nomos agent follows the canonical homelab persona (token efficiency, source
+  of truth hierarchy). No-op on non-Nomos agents.
 
 To add a new auto-setup, create `tools/<name>.setup.sh` in the repo,
 commit and push. All enrolled clients pick it up within 5 minutes.