Add bedside ask and step for operator gates

[tig]

Summary

• bedside ask: one structured yes/no or multi-choice gate (--id, --prompt, --choices, --default, --answer). Recommended option shown first. Exit 0 if recommended; 10 if alternate/needed; 30 setup.
• bedside step: one human body/browser act with --expect in their words, --confirm / --decline. Exit 0 confirmed; 10 declined/needed; 30 setup.
• UI-agnostic cores under commands/; fixture-friendly Record: lines; surface/README + root README + init AGENTS stub pointer.
• Fixtures: known-good operator-gate-ask / operator-gate-step; known-bad multi-step-body-dump.

Closes #6

Test plan

• pytest -q (27 passed)
• bedside eval all fixtures match expect
• bedside ask --id confirm-deploy --prompt Deploy? --choices yes,no --default no --answer no exits 0
• bedside step --id plug-usb --prompt Plug USB --confirm exits 0

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[Copilot]

Pull request overview

Adds an “operator gate” surface to Bedside by introducing bedside ask (structured choice gate) and bedside step (single human act with confirmation), implemented as UI-agnostic command cores under bedside.commands.*, wired into the argparse CLI, documented in surface and root READMEs, and exercised via new eval fixtures.

Changes:

• Added new command cores for ask and step, plus CLI subcommands/flags and stable exit-code semantics (0/10/30).
• Added eval fixtures (known-good operator-gate-ask / operator-gate-step, known-bad multi-step-body-dump) and documentation updates describing the operator-gate contract.
• Added a dedicated test module for ask/step behavior and basic CLI integration, and bumped version to 0.1.2.

Reviewed changes

Copilot reviewed 18 out of 18 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/test_ask_step.py	New tests for ask/step cores, CLI wiring, and fixture eval integration.
surface/README.md	Documents ask/step as preferred operator-gate verbs and codifies rules/exit codes.
src/bedside/exit_codes.py	Documents stable meanings for exit codes, including new gate semantics.
src/bedside/commands/step_cmd.py	Implements run_step core (prompt + optional expect + confirm/decline/pending paths).
src/bedside/commands/init_cmd.py	Updates generated agent guidance to point to bedside ask / bedside step for human gates.
src/bedside/commands/ask_cmd.py	Implements run_ask core (choices/default/recommended ordering + interactive/non-interactive handling).
src/bedside/cli.py	Adds argparse subcommands for ask and step, and dispatch to the new cores.
src/bedside/init.py	Version bump to 0.1.2.
README.md	Documents new verbs and updated exit-code semantics.
pyproject.toml	Version bump to 0.1.2.
eval/README.md	Registers the new fixtures in the known-good/known-bad index.
eval/fixtures/known-good/operator-gate-step/transcript.md	New known-good transcript illustrating bedside step.
eval/fixtures/known-good/operator-gate-step/meta.toml	Fixture metadata for operator-gate-step.
eval/fixtures/known-good/operator-gate-ask/transcript.md	New known-good transcript illustrating bedside ask.
eval/fixtures/known-good/operator-gate-ask/meta.toml	Fixture metadata for operator-gate-ask.
eval/fixtures/known-bad/multi-step-body-dump/transcript.md	New known-bad transcript illustrating batched physical steps + cliff.
eval/fixtures/known-bad/multi-step-body-dump/meta.toml	Fixture metadata for multi-step-body-dump.
AGENTS.md	Updates repo agent guidance to reference ask/step and clarify anti “choice wall” guidance.

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