docs(FR-2624): translate remaining English headings in ja and th docs

[agatha197]

Resolves #6845 (FR-2624)

Summary

The generated PDF TOC showed many Japanese and Thai section headings in English, for example chapter 12 (Compute セッション) whose 13 subsection titles were all still English. A full audit found ~38 untranslated headings per language across five files. The Korean docs were used as the reference for translation style.

• Translated all H1/H2/H3/H4 headings in the Japanese docs across admin_menu.md, chat.md, sessions_all.md, sftp_to_container.md, and vfolder.md.
• Translated the corresponding headings in the Thai docs across the same five files.
• Kept product/technical names in English per TRANSLATION-GUIDE.md (Backend.AI, Jupyter, FileBrowser, SFTP, SSH, GPU, CPU, API, Docker, Python, CLI, etc.).
• Preserved the existing <a id=\"...\"></a> HTML anchors above each translated heading so cross-references from other pages keep resolving.

Test Plan

• Rebuild the ja and th PDFs locally and confirm the TOC now reads in the target language
• Verify all cross-references (e.g. [...](#start-a-new-session)) still resolve in ja and th
• Spot-check admin_menu.md, chat.md, sessions_all.md, sftp_to_container.md, and vfolder.md for both ja and th

[agatha197]

• docs(FR-2624): translate remaining English headings in ja and th docs #6846 👈 (View in Graphite)
• docs(FR-2623): reorganize admin model serving docs and remove clone references #6844
• docs(FR-2603): add health check SVG diagrams for all 4 languages, replace ASCII art #6839
• docs(FR-2603): update auto scaling V2 screenshots, fix bold rendering, correct health check initial status, revise condition/cooldown terminology #6807
• docs(FR-2603): apply 26.4 model serving doc feedback — service launcher fields, vLLM/SGLang runtime params #6804
• docs(FR-2571): address 26.4 docs feedback — remove legacy model serving sections and apply KO wording fixes #6778
• docs: add endpoint detail page revision info, alert banners, and edit behavior docs #6767
• docs(FR-2571): document Model Store V2 and Auto Scaling Rules V2 (26.4.0+) #6760
• docs(FR-2571): address PR #6631 review feedback (excl. model store) #6708
• docs(FR-2571): add Allowed Client IPs field to My Account dialog documentation #6631 : 1 other dependent PR (#6633 )
• docs(FR-2570): recapture login screenshots with TOTP OTP screen in light mode #6630
• docs(FR-2569): recapture start_announcement_banner in light mode #6625
• docs(FR-2543): update model serving documentation with new features #6611
• docs(FR-2542): update date selection UI in statistics documentation #6580
• docs(FR-2541): fix permission label formatting in vfolder documentation #6579
• docs(FR-2540): fix session type filters in session_page documentation #6578
• docs(FR-2539): update copy button location in my_environments documentation #6577
• docs(FR-2538): fix button labels in import_run documentation #6576
• docs(FR-2537): add board customization and auto-refresh to dashboard docs #6575
• main

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[Copilot]

Pull request overview

This PR aims to localize remaining English section headings in the Japanese (ja/) and Thai (th/) Backend.AI WebUI user manual so the generated PDF TOC is fully translated and consistent.

Changes:

• Translated many previously-English H1–H4 headings across 5 docs in src/ja/ and src/th/.
• Preserved existing HTML anchor IDs (<a id="..."></a>) to keep cross-references stable.
• Updated a few inline comment/heading strings related to SFTP/SSH setup sections.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 9 comments.

Show a summary per file

File	Description
packages/backend.ai-webui-docs/src/th/vfolder/vfolder.md	Translates additional Thai headings in vfolder doc (pipeline/automount sections).
packages/backend.ai-webui-docs/src/th/sftp_to_container/sftp_to_container.md	Translates Thai headings for platform-specific SFTP/SSH instructions and client package setup.
packages/backend.ai-webui-docs/src/th/sessions_all/sessions_all.md	Translates several Thai headings in the session creation/management guide.
packages/backend.ai-webui-docs/src/th/chat/chat.md	Translates Thai page title and section headings for the Chat page.
packages/backend.ai-webui-docs/src/th/admin_menu/admin_menu.md	Translates Thai admin menu section headings (resource policies, quota, system/server settings, etc.).
packages/backend.ai-webui-docs/src/ja/vfolder/vfolder.md	Translates additional Japanese headings in vfolder doc (pipeline/automount sections).
packages/backend.ai-webui-docs/src/ja/sftp_to_container/sftp_to_container.md	Translates Japanese headings for platform-specific SFTP/SSH instructions and client package setup.
packages/backend.ai-webui-docs/src/ja/sessions_all/sessions_all.md	Translates many Japanese headings in the session creation/management guide.
packages/backend.ai-webui-docs/src/ja/chat/chat.md	Translates Japanese page title and section headings for the Chat page.
packages/backend.ai-webui-docs/src/ja/admin_menu/admin_menu.md	Translates Japanese admin menu section headings (resource policies, quota, system/server settings, etc.).

[ironAiken2]

LGTM

[graphite-app]

Merge activity

• Apr 22, 4:37 AM UTC: ironAiken2 added this pull request to the Graphite merge queue.
• Apr 22, 4:39 AM UTC: Merged by the Graphite merge queue.