Prepare v5.2.0-beta27

[niksedk]

Version bump + change-log section for the 26 pull requests merged since the v5.2.0-beta26 tag (enumerated from git log --first-parent v5.2.0-beta26..HEAD).

Changes

• src/ui/Logic/Config/Se.cs — v5.2.0-beta26 → v5.2.0-beta27
• src/ui/Assets/Languages/English.json — regenerated; only the version field moved, the new strings from Add "Assisted split" and "Assisted move" windows with ranked one-click suggestions #14198 and Add mpv preview line justification setting (#14167) #14196 were already regenerated in their own PRs
• change-log.txt — new top section

Section

v5.2.0-beta27 (28th of August 2026)

* Add "Assisted split" and "Assisted move" windows, with ranked one-click suggestions and full previews - thx GitGianluc
* Add "Justify lines" for the mpv video preview in Options - Settings - Video - thx kadrimarzouki
* Image based export: let the line justification follow the alignment tag - thx smt-joen
* Much better import of unknown subtitle formats - a new generic XML importer plus a dozen JSON fixes
* Netflix check: measure gaps, bridges and shot changes at the video's frame rate, and fix two "spell out numbers" defects
* Fix the waveform cursor jumping away a moment after a click - thx Davanix
* Fix the undocked waveform window taking the foreground when another program is closed - thx GrampaWildWilly
* Fix around 290 more bugs found in 13 code sweeps - subtitle formats, batch convert, seconv, dialogs, settings, binary edit and core helpers
* Update Chinese (simplified) translation - thx emsb8888-prog
* Update Italian translation - thx bovirus
* Update Japanese translation - thx hisui3393
* Update Korean translation - thx 12si27
* Update Polish translation - thx potplayer-fanpack
* Update Portuguese (Brazil) translation - thx igorruckert

PR coverage

Entry	PRs
Assisted split / move	#14198
mpv justify lines	#14196
Export image justification	#14206
Unknown format import	#14179
Netflix check	#14212
Waveform cursor	#14189
Undocked foreground	#14193
Bug hunts (one line, as asked)	#14180, #14181, #14182, #14185, #14186, #14188, #14191, #14192, #14194, #14197, #14203, #14205, #14207 — 288 fixes
Translations	#14184 (ja), #14183 (pl), #14199 (it), #14201 (zh-Hans), #14208 (pt-BR), #14209 (ko)

Every merged PR in the range is accounted for.

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