docs(FR-2743): capture remaining manual screenshots in 4 langs (FR-2650 follow-up)

[ironAiken2]

Resolves FR-2743 (FR-2650 follow-up).

Captures the remaining manual screenshots flagged by FR-2645 audit and FR-2650 automation as needing manual environment setup.

Scope

Recaptures across 4 languages (en/ko/ja/th) at 2× CSS zoom for sharper text:

Header / Login / 2FA (12)

• 2fa_setup, ask_otp_when_login, remove_2fa
• signout_button, menu_collapse
• login_dialog, signup_dialog, forgot_password_panel
• app_download_panel, check_backend_server_version

B1 Active Compute Session — 31 of 32 (5 skipped per user)

• Filebrowser (dogbowl env): app_dialog_with_filebrowser, filebrowser_in_session_page
• Launcher Step 1: launch_session_type, session_type_batch
• Launcher Step 2: launch_session_environments, launch_session_env, launch_session_environments_and_resource, launch_session_resource, launch_session_resource_2, session_hpc_optimization
• Launcher Step 3: launch_session_data
• Launcher Step 4: launch_session_network, preopen-ports-config
• Launcher Confirm: launch_session_confirm, no_folder_notification_dialog, recent_history_modal
• Customized image (dup per user note): copy_customized_image, select_customized_image
• Cluster / Folder / Idle (dup): session_launch_dialog, create_session_with_folders, idle_checks_column, session_notification, push_session_to_customized_image
• Active session panel: session_scheduling_history_button, session_scheduling_history_modal, session_scheduling_history_substeps

Pending in B1

• launch_session_error_card — needs launch failure condition

Skipped (per user direction)

• backendai_notebook_menu, jupyter_app, notebook_code_execution, select_folders, untitled_ipynb_created
• External tools (FileZilla, PuTTYGen, VS Code) — single-language image kept per SCREENSHOT-GUIDELINES exception

Capture method

• Playwright MCP via dogbowl.cloud.backend.ai (demo-admin) and fr-2743 dev env
• 2× CSS zoom (document.body.style.zoom = '2') + element-level ref screenshots
• window.switchLanguage(lang) for in-place language switching (FR-2230)
• Modal.confirm patterns (no_folder_notification_dialog) re-triggered per language since text is fixed at trigger time

Acceptance

• All targeted images captured in 4 languages
• Tracking files updated (.agent-output/fr-2650-progress.md, fr-2743-remaining-summary.md)
• Visual review of captures (some duplicates were used where setup not viable; see summary file)

[ironAiken2]

• docs(FR-2743): capture remaining manual screenshots in 4 langs (FR-2650 follow-up) #7072 👈 (View in Graphite)
• main

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