fix: Remove agents-llama service references from docs and formulas (#846)

- AGENTS.md: Replace agents-llama and agents-llama-all rows with generic
  'Local-model agents' entry pointing to docs/agents-llama.md
- formulas/release.sh: Remove agents-llama from docker compose stop/up
  commands (line 181-182)
- formulas/release.toml: Remove agents-llama references from restart-agents
  step description (lines 192, 195, 206)

These changes complete the removal of the legacy ENABLE_LLAMA_AGENT activation
path. The release formula now only references the 'agents' service, which is
the only service that exists after disinto init regenerates docker-compose.yml
based on [agents.X] TOML sections.

AGENTS.md

@@ -122,8 +122,7 @@ bash dev/phase-test.sh
 | Reproduce | `docker/reproduce/` | Bug reproduction using Playwright MCP | `formulas/reproduce.toml` |
 | Triage | `docker/reproduce/` | Deep root cause analysis | `formulas/triage.toml` |
 | Edge dispatcher | `docker/edge/` | Polls ops repo for vault actions, executes via Claude sessions | `docker/edge/dispatcher.sh` |
-| agents-llama | `docker/agents/` (same image) | Local-Qwen dev agent (`AGENT_ROLES=dev`), gated on `ENABLE_LLAMA_AGENT=1` | [docs/agents-llama.md](docs/agents-llama.md) |
-| agents-llama-all | `docker/agents/` (same image) | Local-Qwen all-roles agent (all 7 roles), profile `agents-llama-all` | [docs/agents-llama.md](docs/agents-llama.md) |
+| Local-model agents | `docker/agents/` (same image) | Local llama-server agents configured via `[agents.X]` sections in project TOML | [docs/agents-llama.md](docs/agents-llama.md) |
 
 > **Vault:** Being redesigned as a PR-based approval workflow (issues #73-#77).
 > See [docs/VAULT.md](docs/VAULT.md) for the vault PR workflow details.