## Summary
* **What is the goal of this PR?** Fix KOSync failing with "Network
error" on large/complex EPUBs, and simplify the sync navigation flow by
removing the callback/result pattern.
* **What changes are included?**
This PR combines the approaches from #1855 and #1760 into a single,
cleaner solution:
**Memory fix (from #1855):**
- `EpubReaderActivity` pre-computes the local KOReader position and
chapter name, then explicitly releases `epub` and `section` before
launching `KOReaderSyncActivity`. This frees ~65KB measured on device,
giving the TLS handshake sufficient heap. The root cause was
`MBEDTLS_ERR_X509_ALLOC_FAILED` (-0x2880) when a 3-cert chain consumed
~48KB during the handshake with only ~50KB available.
- `KOReaderSyncActivity` no longer receives a `shared_ptr<Epub>` at
construction — it lazy-loads the Epub after TLS only if remote progress
is found (`ensureEpubLoaded()`).
- Added `MIN_HEAP_FOR_TLS = 55000` guard in `KOReaderSyncClient` —
returns `LOW_MEMORY` early if aggregate free heap is too low before
attempting a TLS connection.
**Navigation simplification (from #1760):**
- Replaced `startActivityForResult` + callback with
`activityManager.replaceActivity` / `activityManager.goToReader`.
Progress is saved to `progress.bin` before the epub is released
(cancel/upload paths) and in `saveProgressAndReturn` (apply remote
path). The reader re-launches from the saved position naturally via
`goToReader`, eliminating the need to reload the epub in a callback.
- Extracted `ReaderUtils::saveProgress()` as a shared helper used by
both `EpubReaderActivity` and `KOReaderSyncActivity`.
- Added `STR_SAVE_PROGRESS_FAILED` to all 22 language files for the case
where writing the synced position to SD fails.
**Orientation fix (found during device testing):**
- `EpubReaderActivity::onExit()` resets the renderer to portrait before
destruction. With `replaceActivity` the reader is fully torn down before
KOSync starts, so KOSync was always rendering in portrait even when
reading in landscape. Fixed by calling `ReaderUtils::applyOrientation`
in `KOReaderSyncActivity::onEnter()`.
## Additional Context
Heap measurements on device (large EPUB with complex CSS):
| Metric | Before | After |
|---|---|---|
| Heap before Epub release | 88,156 bytes | — |
| Heap after Epub release | — | 153,892 bytes (+65,736) |
| Heap at TLS handshake | ~50,000 bytes (fails) | ~116,384 bytes
(passes) |
| Min-free-ever during sync session | 2,600 bytes | 33,052 bytes |
| TLS result | `MBEDTLS_ERR_X509_ALLOC_FAILED` | HTTP 200 |
Tested on device: sync from inside a large EPUB in both portrait and
landscape, cancel, apply remote progress, upload local progress.
---
### AI Usage
Did you use AI tools to help write this code? _**YES**_
---------
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
## Summary
Fixes#258. Bookerly is not licensed for use in CrossPoint. Switched to
Google's open Noto Serif font.
---
### 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?**
Adds OPDS search support, allowing users to search a catalog directly
from the book browser when the server exposes an OpenSearch template.
**What changes are included?**
- `OpdsParser`: parses the OpenSearch template URL from feed-level
`<link rel="search">` elements and exposes it via `getSearchTemplate()`
- `OpdsBookBrowserActivity`: fetches and stores the search template
after each feed load; shows a Search hint on the Left button when a
template is available; launches the existing `KeyboardEntryActivity` for
query input; URL-encodes the query and fetches the result feed
- Absolute search result URLs are handled correctly in `fetchFeed`
(skips prepending the server base URL)
- A `consumeConfirm` guard prevents the Confirm release that submits the
keyboard from immediately triggering a book download on the first
browsing frame after search results load
## Additional Context
- Search is silently unavailable if the server does not advertise an
OpenSearch template — no UI change in that case
- Tested against a Calibre-Web OPDS endpoint which exposes `<link
rel="search" type="application/opensearchdescription+xml">`
- The inline URL encoder in `performSearch` was necessary as
`StringUtils` has no such utility; worth considering extracting to
`StringUtils` in a follow-up
- No new dependencies introduced
---
### 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**_
---------
Co-authored-by: kira <rammah@tuta.io>
Co-authored-by: Justin Mitchell <justin@jmitch.com>
## Summary
Polish localization for `STR_SHOW_HIDDEN_FILES`
---
### 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?**
Removing no longer used i18n keys/string, to reduce (~28k) used flash
space.
To correct to swedish translations for `STR_FONT_SIZE` and
`STR_KOREADER_SYNC`.
* **What changes are included?**
`lib\I18n\translations\*`
## Additional Context
* Add any other information that might be helpful for the reviewer
(e.g., performance implications, potential risks,
specific areas to focus on).
---
### 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?**
Quick follow up to #1291, adding Polish translations suggested by
@th0m4sek
---
### 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?**
Increase accuracy of button hints and text description in the file
browser when viewing empty directory.
* **What changes are included?**
Adjusted button label hint rendering logic in file browser to hide the
"Open", "Up", and "Down" hints when the they are not available due to an
empty directory.
I also changed the NO_BOOKS_FOUND string to NO_FILES_FOUND and updated
translations. File browser shows more than just books so seeing "No
Books Found" really doesn't make sense.
## Additional Context
Very Simple change, here is what that looks like on my device.
<img width="1318" height="879" alt="Untitled (7)"
src="https://github.com/user-attachments/assets/6416c8c8-795d-41a5-9b9f-28d2c26666a0"
/>
---
### 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?** Add missing strings and tweaks for
polish language
* **What changes are included?**
## Additional Context
* Add any other information that might be helpful for the reviewer
(e.g., performance implications, potential risks,
specific areas to focus on).
---
### 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? _**< YES | PARTIALLY | NO
>**_
## Summary
* **What is the goal of this PR?** some tweaks to Polish translation
* **What changes are included?**
## Additional Context
* Add any other information that might be helpful for the reviewer
(e.g., performance implications, potential risks,
specific areas to focus on).
---
### 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? _**< YES | PARTIALLY | NO
>**_
---------
Co-authored-by: Zach Nelson <zach@zdnelson.com>
Co-authored-by: Arthur Tazhitdinov <lisnake@gmail.com>
## Summary
* **What is the goal of this PR?** Implements Polish language
* **What changes are included?**
## Additional Context
* Add any other information that might be helpful for the reviewer
(e.g., performance implications, potential risks,
specific areas to focus on).
---
### 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? _**< YES | PARTIALLY | NO
>**_
---------
Co-authored-by: Zach Nelson <zach@zdnelson.com>
Co-authored-by: Arthur Tazhitdinov <lisnake@gmail.com>
