docs: fix TiDB Cloud file system casing to match the product name

[yahonda]

What is changed, added or deleted? (Required)

Fixes an inconsistent casing of the "TiDB Cloud Filesystem" product name. 11 places across 7 ai/ti/reference/ pages' Options sections used the lowercase generic wording "TiDB Cloud file system" instead of the product's branded name "TiDB Cloud Filesystem", which is used consistently 243 times elsewhere in the same directory (including these same files' own titles and other option descriptions).

Found while reviewing a Japanese i18n sync PR for this content.

Which TiDB version(s) do your changes apply to? (Required)

• master (the latest development version)
• v8.5 (TiDB 8.5 versions)
• v8.4 (TiDB 8.4 versions)
• v8.3 (TiDB 8.3 versions)
• v8.2 (TiDB 8.2 versions)
• v8.1 (TiDB 8.1 versions)
• v7.5 (TiDB 7.5 versions)
• v7.1 (TiDB 7.1 versions)
• v6.5 (TiDB 6.5 versions)

This ai/ti/ (TiDB Cloud CLI) content currently exists only on the v8.5 branch, not on master.

What is the related PR or file link(s)?

• This PR is translated from:
• Other reference link(s):

AI agent involvement

• The changes in this PR were primarily made by an AI agent on behalf of the PR author.

Do your changes match any of the following descriptions?

• Delete files
• Change aliases
• Need modification after applied to another branch
• Might cause conflicts after applied to another branch

🤖 Generated with Claude Code

Summary by CodeRabbit

• Documentation
  • Updated TiDB Cloud Filesystem terminology across filesystem command references, including commands for copying, linking, layering, deleting, describing, mounting, and packaging files.
  • Standardized capitalization in option descriptions to match the product name.
  • Command behavior, option defaults, and functionality remain unchanged.

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Run ID: 66d890ba-3393-4531-9643-d7d3981a0660

📥 Commits

Reviewing files that changed from the base of the PR and between 420868d and 5d82b0a.

📒 Files selected for processing (4)

• ai/ti/reference/ti-fs-copy-file.md
• ai/ti/reference/ti-fs-create-hardlink.md
• ai/ti/reference/ti-fs-delete-file.md
• ai/ti/reference/ti-fs-describe-file.md

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📝 Walkthrough

Walkthrough

The pull request updates seven TiDB CLI reference documents to use “TiDB Cloud Filesystem” consistently. It changes option descriptions only. Command behavior and defaults remain unchanged.

Changes

Filesystem terminology

Layer / File(s)	Summary
Reference wording normalization ai/ti/reference/ti-fs-*.md	Option descriptions use “TiDB Cloud Filesystem” instead of “TiDB Cloud file system.” No functional or default-value changes are made.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~3 minutes

Change: Other

Suggested reviewers: icemap

Merge Risk: ⚪ Minimal · up to 5d82b

The changes standardize the product name in reference descriptions without changing command behavior or defaults. No merge-blocking issue is evident.

Architecture Summary

Architecture risk: 🔵 Low · up to 5d82b

The change affects 1 system.

Changed systems: ai

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

• observed — ai (service) was modified; 7 changed files map to changed impact.

Before / after behavior

• observed — Modified behavior in ai/ti/reference/ti-fs-create-layer.md: Updated the --base-root-path option description to use the product name "Filesystem" instead of "file system."
• observed — Modified behavior in ai/ti/reference/ti-fs-mount-file-system.md: The --remote-path option documentation renames "The TiDB Cloud file system root path" to "The TiDB Cloud Filesystem root path"; no functional change to the option or its default /.
• observed — Modified behavior in ai/ti/reference/ti-fs-pack-file-system.md: Updated the --remote-root option description in the Options section, changing "file system root" to "Filesystem root" to match the product name capitalization used throughout the reference.
• observed — Modified behavior in ai/ti/reference/ti-fs-copy-file.md: Updated the descriptions for --append, --create-parents, and --from-remote to use “TiDB Cloud Filesystem” instead of “TiDB Cloud file system.”

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the main documentation change: correcting the casing of the TiDB Cloud Filesystem product name.
Description check	✅ Passed	The description explains the changes, affected version, scope, AI involvement, and applicable change categories. It is sufficiently complete for review.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2026-09-30 02:58:15.936827051 +0000 UTC m=+764821.162048158: ☑️ agreed by qiancai.

[qiancai]

/approve

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