release(v1.5.6): rewrite manifest for the settings overhaul

docs/ROADMAP.md

@@ -22,12 +22,26 @@ parallel as a continuous correction pass, gathered via the Hellion Forge Discord
 
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-## v1.5.6 — Upstream-Sync Filter-Notification-Polish (released 2026-05-22)
+## v1.5.6 — Settings Overhaul + Filter & Notification Polish (released 2026-05-23)
 
-A backlog-sync cycle: an optional per-tab regex filter, a pre-send warning for
-plugin-only symbols, sender name display options, a separate unfocused-window
-opacity, and a custom-sound volume slider. Half two of a two-part backlog
-cleanup pass. Schema bumped to v19, additive only.
+Settings window reorganised from ten tabs to seven (General, Appearance, Chat, Window,
+Channels, Data & Privacy, About). Each tab uses collapsible sections grouped by control
+type; sections start collapsed on every tab-open.
+
+Delivered from the originally-planned v1.5.5b bundle:
+- **UI-7** — Sender-name display options: world-suffix mode (Never / Other worlds only / Always)
+  and name-format mode (Full name / First name only / Initials). Lives in Chat → Messages.
+- **UI-11** — Pre-send warning when a message contains plugin-only symbols. Toggle in
+  Chat → Messages.
+- **UI-12** — Separate window opacity for focused vs. inactive chat window. New slider in
+  Appearance → Window style.
+- **AUDIO-1** — Custom notification sound volume slider. General → Sound, mirrored in
+  Channels → per-tab → Notification. Affects only the three bundled custom sounds.
+- ~~**UI-8**~~ — **GESTRICHEN**: per-tab regex filter. Removed because FFXIV's built-in
+  blackword filter covers the same need.
+
+All 24 locale files updated for new section labels and v1.5.6 control labels (machine
+translation; native review via Hellion Forge Discord).
 
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