PR #32871 runtime verification, 2026-11-10, Linux Boat VM

Reviewed: description, both commits, complete diff, issue comments and inline review discussion.
Diff: docs/user/providers-claude.md only; adds Claude in Chrome setup and authentication exclusions.
Main: e4d86abca9c0d0ddd8107ea557f2e0c879632cf3 (github/main).
Main worktree: /home/user/main; timeout 600 vp i succeeded.
Main dev: captured process group 17337; ports server=16733 web=8693.
Main guide: no Claude in Chrome section or --chrome instructions.
Main web UI: Settings > Providers > Select Claude exposes Launch arguments, placeholder e.g. --chrome.
Main setting: entered --chrome; reloaded; selected Claude again; value was --chrome.
Main server stopped before PR server began; listener check confirmed both ports absent.

PR: 98adefbf2288064538add72cc2bc333e575c2501, docs/claude-in-chrome-launch-arg.
timeout 600 vp i succeeded.
PR dev: captured process group 23963; explicit home /home/user/t3code/.t3; server=13773 web=5733.
Browser: repo Playwright 1.60.0, /usr/bin/google-chrome, real web app, 1440x1000.
Project created through Add project > Local folder > /home/user/t3code.
Selected Codex GPT-6.1-Sol in composer; sent read-only git command request.
Real provider turn completed: git branch --show-current and git rev-parse --short HEAD.
Client response: branch docs/claude-in-chrome-launch-arg; head 98adefbf22.
Settings > Providers > Select Claude > Launch arguments: entered --chrome, blurred, reloaded, selected Claude.
Observed saved value: --chrome.
Cleared launch arguments, blurred, reloaded, selected Claude.
Observed saved value: empty string.
Neighbor check: switching between Codex and Claude preserved each instance settings; Codex launch arguments stayed empty.
Recording repeats entry, switching providers, and clearing, with loading lead-in removed; reload persistence was checked separately.

BLOCKED: Claude auth status says loggedIn=false, authMethod=none; running app says Not authenticated.
Chrome profile has no installed Extensions directory. No direct Anthropic plan login or connected Claude in Chrome extension is available.
Cannot prove discovery or execution of mcp__claude-in-chrome__ tools, effect on new versus existing Claude sessions, or authentication/platform exclusions.
A successful Codex turn is only a neighboring provider check, not proof of Claude browser integration.
Native desktop, mobile, macOS, Windows and WSL not exercised.
No source edits, commits or pushes. Existing CI: 28 successful, 0 failing, 0 pending.