Runs repeatable AI work as checked, budgeted workflow files

# Nika Skill

Use [Nika](https://nika.sh) as a deterministic workflow worker orchestrated by
the Hermes `terminal` tool. Nika is an open-source (AGPL) Rust engine that captures
a repeatable AI task as a plain-text `*.nika.yaml` file, audits it **before a
single token is spent** (plan, cost floor, secret flows, types), executes it
against local or cloud providers (Ollama/llama.cpp/vLLM included), and records
a tamper-evident trace.

Division of labor: **Hermes orchestrates · Nika captures repeatable work as a
checkable file and runs it with receipts.** Nika is NOT another coding agent —
for autonomous coding, use the `opencode` skill. Delegate to Nika when the
work should be *repeatable, budgeted, and auditable*.

## When to Use

- The user asks to run, check, or author a `*.nika.yaml` workflow
- A task will be repeated (daily digest, triage, ETL, report, multi-step LLM
  pipeline) — capture it as a workflow instead of re-prompting
- The user wants a hard cost cap, a cost estimate before running, or
  receipts/audit of what ran
- A pipeline mixes models/providers (local + cloud) or mixes LLM steps with
  shell/HTTP/file steps
- The user wants a run they can replay, verify, or reproduce later