v1.2.0

Release APK build for v1.2.0.

Signed with the project's checked-in keystore (stable since v0.4.15). Sideload-only distribution today.

What's Changed

• feat(settings): add "Report objectionable content" mailto in About (#1140) by @jphein in #1188
• fix(ao3): 1 req/sec politeness gate + honest compliance kdoc (#1141) by @jphein in #1193
• fix(sync): delete InstantDB record on sign-out (#1139) by @jphein in #1194
• fix(sources): centralize descriptive User-Agent for Wikipedia, arXiv, Radio Browser (#1141) by @jphein in #1196
• feat(playback): auto-enable Do Not Disturb with sleep timer (#1190) by @jphein in #1199
• feat(sync): confirm before destructive sign-out (#1197) by @jphein in #1200
• feat(fiction): chapter content previews in the chapter list (#1189) by @jphein in #1201
• fix(playback): sample radio ExoPlayer position only on the main looper (#1192) by @jphein in #1206
• fix(settings): guard 2 more uriHandler.openUri calls (#1203) by @jphein in #1207
• fix(voices): gate Supertonic 3 voices out of the catalog until engine lands (#1202) by @jphein in #1209
• chore(play-store): rebrand feature graphic to Candela (#1198) by @jphein in #1212
• test(epub-writer): complete stale NoopDaos DAO fakes by @jphein in #1210
• fix(sources): centralize User-Agent across 13 remaining sources (#1204) by @jphein in #1215
• feat(ui): collapse headers on scroll in Library & Browse (#1195) by @jphein in #1213
• feat(playback): wire Supertonic 3 TTS engine (#1191) by @jphein in #1205

Full Changelog: v1.1.6...v1.2.0