# Demo of the AtpClient Smart Cells

```elixir
Mix.install([
  {:kino_atp_client, "~> 0.2"}
])
```

## Configuring a backend

Open the **ATP Backend Configuration** cell to wire each backend you intend to
use. The form is schema-driven — fields come straight from
`AtpClient.<Backend>.config_schema/0`, grouped into Connection / Defaults /
Advanced. Click **Verify connection** to call the backend's `verify/1` callback
before depending on its settings.

For Isabelle in particular: if the `isabelle` executable is on `PATH` (or
`ISABELLE_TOOL` is set), leave every field blank — the cell will auto-spawn a
local server and reuse one `HOL` session across solves. Fill in `host`, `port`,
`password`, etc. only when targeting a remote `isabelle server`.

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```elixir
# ATP Backend Configuration: no values set yet.
```

## SystemOnTPTP

`SystemOnTPTP` needs no credentials — the cell ships ready to pick a prover
from the live-fetched list and run it.

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```elixir
# Generated by ATP Solver (backend: SystemOnTPTP)
problem = "thf(test, conjecture, $true => $true)."
system = ""
time_limit = 5

case AtpClient.SystemOnTptp.query_system(problem, system, time_limit_sec: time_limit, raw: true) do
  {:ok, output} ->
    IO.puts(output)
    output

  {:error, reason} ->
    raise "SystemOnTPTP error: #{inspect(reason)}"
end
```

## Isabelle (zero-config)

With a local `isabelle` on `PATH`, the same TPTP problem runs against the
auto-managed session. Switching the backend dropdown to `Isabelle` swaps the
header controls (proof method picker) and the result panel (per-lemma table).

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```elixir
# Generated by ATP Solver (backend: Isabelle)
problem = "thf(test, conjecture, $true => $true)."

# Uses the auto-managed local Isabelle server when `isabelle` is on PATH,
# otherwise falls back to AtpClient.Isabelle's remote-config path.
case KinoAtpClient.IsabelleRuntime.available?() do
  :ok -> KinoAtpClient.IsabelleRuntime.query_tptp(problem, proof_method: "by auto")
  {:error, _} -> AtpClient.Isabelle.query_tptp(problem, proof_method: "by auto")
end
```

## Other backends

Switch the backend dropdown to `StarExec` or `LocalExec` to run against a
self-hosted StarExec deployment or a locally installed TPTP-compliant prover
(E, Vampire, …). Both normalize their output to a single SZS-status badge.