fix(review): preserve adversarial focus text

[ALV0612]

Summary

• keep a single adversarial-review focus argument opaque instead of re-tokenizing prose as CLI options
• parse only supported option prefixes for legacy raw wrapper strings
• stop option parsing after focus begins, including literal --model and -m examples
• add end-to-end fake app-server regression coverage

Verification

• focused regression: pass
• full suite: 92/92 pass
• build and version checks pass
• OpenSpec strict validation and git diff --check pass

Fixes #333

[sylvesterkaczmarek]

The flag leak is fixed, but the focus still isn't opaque in the single-argv path. splitRawArgumentString reparses the whole value and then the suffix is rebuilt with join(" "), which strips quotes/backslashes and normalises whitespace. For example a focus containing a Windows path like C:\temp\foo loses the backslashes before it reaches the review prompt. Once the first positional starts, can we preserve the original raw suffix verbatim instead of reconstructing it from tokens?

[ALV0612]

@codex review

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. 👍

Reviewed commit: 6efffaa78f

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".