fix: forward all engine options through openadapt flow record

[abrichr]

Problem

The launcher's click wrapper for openadapt flow record enumerated only the web-era options, so openadapt flow record --backend windows failed with No such option: --backend even though the engine (openadapt-flow >= 1.17, verified against 1.17.2) supports --backend {web,windows,macos,linux,rdp}. Sibling verbs (run, push, teach, ...) already forward generically and were unaffected.

Engine record options the wrapper hid:

• --backend {web,windows,macos,linux,rdp}
• --agent-url (windows / WAA agent)
• --macos-app, --macos-window-title
• --linux-app, --linux-window-title, --linux-allow-physical-input
• --rdp-host
• --task

The wrapper also forced --url, which the engine only requires for --backend web — desktop backends were unreachable even in principle.

Fix

Convert record to the existing _FlowPassthroughGroup generic delegation (same mechanism as run/push): all arguments forward verbatim to openadapt-flow record, openadapt flow record --help renders the engine's real help, and future engine options never need a launcher release. Existing web invocations (--url/--out/--secret/--param/--headless) forward byte-for-byte unchanged (regression-tested).

Behavioral deltas, all intentional:

• --backend and the desktop-backend options above now work.
• Missing/invalid options are diagnosed by the engine's parser (which knows --url is web-only) instead of a stale launcher copy.
• record still appears in openadapt flow --help with an updated one-line summary.

Verification

• Fresh venv, pip install -e ".[dev]" with real openadapt-flow 1.17.2 from PyPI: openadapt flow record --backend windows --url x --out y now reaches the engine's parser and enters the desktop-record path (halts only on the missing optional openadapt-capture extra, as standalone openadapt-flow does).
• pytest tests/: 34 passed, 6 skipped (openadapt-ml seam tests; they run in CI). Adds 3 regression tests: backend-option forwarding, verbatim web invocation, engine-help rendering.
• ruff check + ruff format --check clean.

🤖 Generated with Claude Code