Function request: automatically cache new text (configurable cache size and translation options) when starting

Clear and concise description of the problem

Description

I hope that when the application starts, the latest articles can be automatically cached to optimise the offline reading experience

Detailed requirements

1. ** Optional Functions **
   Add a switch for "Cache new articles at startup" in the Settings.
   It is off by default. Users can manually turn it on.

2. ** Cache Size setting **
   Users can customize the number of cached articles or the total size (for example: 50MB, 100MB, 200MB).

3. ** Cache Content Options **
   Users can choose whether to cache the translated content of articles and whether to cache the content in reading mode

Expected effect

After opening, the application will automatically download several of the latest articles to the local cache when it starts up.
It can be read offline.
If the cache is full, the old content will be automatically cleared by time or priority policy.

Supplementary suggestions

Display the current cache usage on the cache page.

• Supports manual cache cleaning.

Suggested solution

.

Alternative

No response

Additional context

No response

Validations

• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.
• This issue is valid

No files, tests, or entry points are named. Start by locating the startup flow, Settings, and cache page, then trace existing offline caching and translation or reading-mode options; done means configurable startup caching, cache limits and cleanup, usage display, and manual clearing all work as described.