cottongin c2a966a6ea

refactor: Memory optimization and XTC format removal ...

Memory optimization:
- Add LOG_STACK_WATERMARK macro for task stack monitoring
- Add freeCoverBufferIfAllocated() and preloadCoverBuffer() for memory management
- Improve cover buffer reuse to reduce heap fragmentation
- Add grayscale buffer cleanup safety in GfxRenderer
- Make grayscale rendering conditional on successful buffer allocation
- Add detailed heap fragmentation logging with ESP-IDF API
- Add CSS parser memory usage estimation

XTC format removal:
- Remove entire lib/Xtc library (XTC parser and types)
- Remove XtcReaderActivity and XtcReaderChapterSelectionActivity
- Remove XTC file handling from HomeActivity, SleepActivity, ReaderActivity
- Remove .xtc/.xtch from supported extensions in BookManager
- Remove XTC cache prefix from Md5Utils
- Update web server and file browser to exclude XTC format
- Clear in-memory caches when disk cache is cleared

2026-01-27 20:35:32 -05:00

..

blocks

checkpoint 1

2026-01-26 19:48:21 -05:00

converters

image tweaks

2026-01-27 07:11:18 -05:00

css

refactor: Memory optimization and XTC format removal

2026-01-27 20:35:32 -05:00

hyphenation

fix: Allow line break after ellipsis and underscore (#425)

2026-01-27 07:31:26 -05:00

parsers

fix: line break - flush word before <br/> tag (#525)

2026-01-27 07:36:06 -05:00

BookMetadataCache.cpp

perf: batch ZIP size lookup in buildBookBin (O(n*m) → O(n log n))

2026-01-22 15:53:00 -05:00

BookMetadataCache.h

perf: batch ZIP size lookup in buildBookBin (O(n*m) → O(n log n))

2026-01-22 15:53:00 -05:00

Page.cpp

style: apply clang-format-21 formatting

2026-01-26 22:16:41 +00:00

Page.h

checkpoint 1

2026-01-26 19:48:21 -05:00

ParsedText.cpp

fix compilation errors

2026-01-19 23:09:35 -06:00

ParsedText.h

fix compilation errors

2026-01-19 23:09:35 -06:00

Section.cpp

checkpoint 1

2026-01-26 19:48:21 -05:00

Section.h

granular position tracking

2026-01-25 00:24:54 -05:00