docs: bump vitepress from 2.0.0-alpha.12 to 2.0.0-alpha.15 in /docs/user

[dependabot]

Bumps vitepress from 2.0.0-alpha.12 to 2.0.0-alpha.15.

Release notes

Sourced from vitepress's releases.

v2.0.0-alpha.15

Fixes a theme regression in v2-alpha.14.

Please refer to CHANGELOG.md for details.

v2.0.0-alpha.14

Please refer to CHANGELOG.md for details.

v2.0.0-alpha.13

Please refer to CHANGELOG.md for details.

Changelog

Sourced from vitepress's changelog.

2.0.0-alpha.15 (2025-11-22)

Bug Fixes

• theme: navbar overflowing on mobile devices (06f0e1a), closes #5039

2.0.0-alpha.14 (2025-11-21)

Bug Fixes

• log dead links in dev mode too (179ee62), closes #4419
• theme: sidebar alignment when scrollbar is there on page (0ee7158), closes #5027

Features

• client: emit vitepress:codeGroupTabActivate custom event when a code group tab is activated (dfb02a4), closes #5023

2.0.0-alpha.13 (2025-11-13)

Bug Fixes

• client,a11y: improve focus handling and scrolling behavior in router (#4943) (d46107f)
• disable markdown-it-attrs for fenced code blocks (0899618)
• git log parsing when there are empty commits in history (#4965) (612c458)
• print full path in dead links check (2b77fb3), closes #4919
• rename markdown.cjkFriendly to markdown.cjkFriendlyEmphasis (bce0b53), closes #4952
• respect markdown.cache = false on build too (6d7422f)
• simplify lang extraction logic; use markdown-it plugins in type-safe manner; bump deps (4e548f5)
• theme: add lang and dir attributes to language picker (f0b29d7)
• theme: adjust margin of code blocks inside containers (82fac5d), closes #4921
• theme: avoid use of :where in selector list for now (c2eaccd), closes #4923
• theme: disable whitespace wrapping for VPBadge (#4968) (113d230)
• theme: use nav height css var for curtain top in sidebar (#4993) (be260fd)

Features

• export cacheAllGitTimestamps and getGitTimestamp (31d87e2)
• i18n,a11y: change last update logic (#4935) (187bf25)
• markdown: support custom display-name for fenced code blocks (#4960) (3d61619)
• prevent $ symbol selection in shell code (#5025) (bf2715e)
• theme: allow passing functions for nav links (#4963) (34cfa91)

Performance Improvements

• make a single git call for timestamps instead of calling it for each file (#4958) (6dfcdd3)

BREAKING CHANGES

• markdown-it-attrs is disabled for fenced code blocks. For most users no change is required. If you want to add classes to code blocks, do it using shiki transformers instead.
• Rename cjkFriendly to cjkFriendlyEmphasis in your vitepress config. Most people should be unaffected unless they want to disable the CJK emphasis behavior added v2.0.0-alpha.12.

Commits

• d954dc8 release: v2.0.0-alpha.15
• 06f0e1a fix(theme): navbar overflowing on mobile devices
• bae5397 release: v2.0.0-alpha.14
• 5e0d7da chore: replace debug with obug (#5030)
• b8f3c46 chore: bump deps
• d16d197 chore: update oxc-minify to 0.98 (#5033)
• 9183680 docs: update github search links
• 179ee62 fix: log dead links in dev mode too
• dfb02a4 feat(client): emit vitepress:codeGroupTabActivate custom event when a code ...
• cd01bc6 docs: mention that relative bases are not supported
• Additional commits viewable in compare view

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