mod: Phase 1 - bring forward mod-exclusive files with ActivityManager migration

Brings ~55 mod-exclusive files to the upstream-based mod/master-resync branch:

Activities (migrated to new ActivityManager pattern):
- Clock/Time: SetTimeActivity, SetTimezoneOffsetActivity, NtpSyncActivity
- Dictionary: DictionaryDefinitionActivity, DictionarySuggestionsActivity,
  DictionaryWordSelectActivity, LookedUpWordsActivity
- Bookmark: EpubReaderBookmarkSelectionActivity
- Book management: BookManageMenuActivity, EndOfBookMenuActivity
- OPDS: OpdsServerListActivity, OpdsSettingsActivity
- Utility: DirectoryPickerActivity, NumericStepperActivity

Utilities (unchanged):
- BookManager, BookSettings, BookmarkStore, BootNtpSync
- Dictionary, LookupHistory, TimeSync, OpdsServerStore

Libraries: PlaceholderCover, TableData, ChapterXPathIndexer
Scripts: inject_mod_version, generate_book_icon, preview_placeholder_cover
Docs: KOReader sync XPath mapping

Migration changes:
- ActivityWithSubactivity -> Activity base class
- Callback constructors -> finish()/setResult() pattern
- enterNewActivity() -> startActivityForResult()
- Activity::RenderLock&& -> RenderLock&&

These files won't compile yet - they reference mod settings and I18n
strings that will be added in subsequent phases.

Made-with: Cursor

chat-summaries/2026-02-21_17-22-summary.md

@@ -0,0 +1,24 @@
+# Port PR #1068: Correct hyphenation of URLs
+
+## Task
+
+Port upstream PR [#1068](https://github.com/crosspoint-reader/crosspoint-reader/pull/1068) by Uri-Tauber into the mod fork. The PR was not yet merged upstream, so it was manually patched in.
+
+## Changes made
+
+1. **`lib/Epub/Epub/hyphenation/HyphenationCommon.cpp`**: Added `case '/':` to `isExplicitHyphen` switch, treating `/` as an explicit hyphen delimiter for URL path segments.
+
+2. **`lib/Epub/Epub/hyphenation/Hyphenator.cpp`**: Replaced the single combined filter in `buildExplicitBreakInfos` with a two-stage check:
+   - First checks `isExplicitHyphen(cp)`
+   - Then skips repeated separators (e.g., `//` in `http://`, `--`)
+   - Then applies strict alphabetic-surround rule only for non-URL separators (`cp != '/' && cp != '-'`)
+
+3. **`mod/prs/MERGED.md`**: Added PR #1068 entry with full documentation.
+
+## Mod enhancements over upstream PR
+
+- Included coderabbit's nitpick suggestion (not yet addressed in upstream) to prevent breaks between consecutive identical separators like `//` and `--`.
+
+## Follow-up items
+
+- None. Port is complete.