## Summary
**What is the goal of this PR?** (e.g., Implements the new feature for
file uploading.)
Fix prewarm perf when a page contains many styles.
The prewarm page buffer was a single slot, so each `prewarmCache` call
for a new font style freed the previous style's glyphs. On pages with
multiple styles (regular + bold + italic), only the last style was
prewarmed. The others fell through to the hot-group compaction path at
~2-3ms per glyph.
This was most visible on rich formatting (e.g. this [Czech prayer
book](https://stahuj.kancional.cz/e-kniha/kancional.epub) with bold
headings, italic liturgical text, and regular body), where page renders
took 3-5 seconds instead of ~700ms.
Fix: use up to 4 page buffer slots (one per font style) so all styles
stay prewarmed simultaneously.
Fixes#1450.
---
### AI Usage
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## Summary
**What is the goal of this PR?**
This change deletes include/README, which is a PlatformIO boilerplate
placeholder file explaining what header files are. The include/
directory isn't used by this project (headers live in lib/ and src/), so
this is just cleanup.
### AI Usage
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helps set the right context for reviewers.
Did you use AI tools to help write this code? _**NO**_
## Summary
* A simple tweak to pre-index the next chapter silently during normal
reading.
* Triggers silent pre-indexing of the next chapter when the penultimate
page of a chapter is rendered to reduce visible interruptions.
* Keeps existing indexing with popup when a reader jumps directly into
an unindexed chapter.
## Additional Context
* Reader input is temporarily blocked during silent indexing to avoid
navigation/index state conflicts.
* The penultimate page is used because readers typically spend longer
there than on the final page.
* This change optimizes linear reading flow while preserving reliable
indexing for non-linear navigation.
## Possible Improvements
* Add a setting for First Page Indexing vs Penultimate Page Pre-indexing
* Display an indexing icon in the status bar instead of using a popup
that overlaps book text.
Tested on device:
https://www.dropbox.com/scl/fi/29g5kjqgsi5e4hgujv38u/Silent-Indexing.MOV?rlkey=yemi4mosmev5vicaa7gpe49qw&dl=0
---
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helps set the right context for reviewers.
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---------
Co-authored-by: Jake Kenneally <jakekenneally@gmail.com>
## Summary
**What is the goal of this PR?**
Update SKILL.md to stop instructing contributors to commit `I18nKeys.h`
and `I18nStrings.h`. All three generated i18n files have been gitignored
since 1b7dde07 and are regenerated at build time.
---
### AI Usage
While CrossPoint doesn't have restrictions on AI tools in contributing,
please be transparent about their usage as it
helps set the right context for reviewers.
Did you use AI tools to help write this code? _**NO**_
## Summary
* **What is the goal of this PR?** All praise goes to @didacta for his
PR #537. Just picked up the reviewer comments to contain the changes as
suggested (there was no response for more than 6 weeks, so I wanted to
reanimate this feature).
Just one addition: should recognize usb cable plug ins / retractions and
update the icon immediately
* **What changes are included?**
## Additional Context
see #537
---
### AI Usage
While CrossPoint doesn't have restrictions on AI tools in contributing,
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Did you use AI tools to help write this code? _**< NO >**_
Adrian Wilkins-Caruana