[Bug] Font size scaling causes Shiki instances to accumulate indefinitely (memory leak)

[kqint]

• The Plugin is up to date
• Obsidian is up to date

Describe the bug
When using Obsidian with the official Quick font size adjustment setting enabled, pressing Ctrl + scrolling the mouse wheel triggers the shiki-highlighter plugin to repeatedly create new Shiki instances without disposing the old ones. The console continuously outputs warnings like [Shiki] xxx instances have been created..., and the instance count keeps growing, severely impacting performance and causing memory leaks.

To Reproduce

1. Install and enable the shiki-highlighter plugin.
2. Go to Settings → Appearance → Font section, then enable "Quick font size adjustment".
3. Open the developer tools (Ctrl+Shift+I) and switch to the Console panel.
4. Continuously zoom in/out (e.g., hold Ctrl and scroll the mouse wheel 10 steps). The console will show the first warning: [Shiki] 10 instances have been created...; continue scrolling and you will see warnings at 20, 30, etc.

Expected behavior

• When the configuration changes, the existing Shiki instance should be reused (singleton pattern), or the old instance should be disposed before creating a new one.
• No warnings about accumulating instances should appear in the console.

Screenshots

Occurs on

• Windows
• macOS
• Linux
• Android
• iOS

Plugin version
0.7.4

Additional context
Relevant Logs (excerpt)

app.js:1 Obsidian Developer Console
plugin:shiki-highlighter:33 [Shiki] 10 instances have been created. Shiki is supposed to be used as a singleton, consider refactoring your code to cache your highlighter instance; Or call `highlighter.dispose()` to release unused instances.
Wi @ plugin:shiki-highlighter:33
Gi @ plugin:shiki-highlighter:33
await in Gi
Ki @ plugin:shiki-highlighter:33
i @ plugin:shiki-highlighter:33
loadShiki @ plugin:shiki-highlighter:944
await in loadShiki
load @ plugin:shiki-highlighter:944
await in load
reloadHighlighter @ plugin:shiki-highlighter:945
await in reloadHighlighter
eval @ plugin:shiki-highlighter:945
（匿名） @ app.js:1
（匿名） @ app.js:1
（匿名） @ app.js:1
（匿名） @ app.js:1
e.onConfigChanged @ app.js:1
（匿名） @ app.js:1
（匿名） @ app.js:1
（匿名） @ app.js:1
t.setConfig @ app.js:1
（匿名） @ app.js:1

Note: English is not my native language. This issue description was translated into English with the assistance of AI. Please let me know if anything is unclear or needs further clarification.

[mProjectsCode]

Should be fixed in 0.7.5

[kqint]

Thank you for the quick fix! This issue is now resolved.