docs: record Fyne v2.8.2 blocker re-check in ROADMAP and CHANGELOG

Co-authored-by: Cursor <cursoragent@cursor.com>

docs/ROADMAP.md

@@ -126,6 +126,16 @@ GUI-layer gaps and trade-offs. Each item below states its **blocker**:
 - **UX** — shippable with today's widgets; deferred until a cleaner approach
   exists (a nicer Fyne widget would help but is not required).
 
+**Last re-checked against Fyne v2.8.2 (2026-10-21; GoSentry is on v2.7.4, the
+last 2.7.x release).** None of the blockers below is lifted: there is still no
+API to add or remove the tray icon mid-session, no window-state query
+(`IsMaximized` or similar), and `widget.Table` has no filter or sort support.
+Upgrading to 2.8.x gives nothing for these items; re-check on the next Fyne
+release that mentions tray, window state, or table/data-grid changes. Note that
+on Linux 2.8.x builds both the X11 and Wayland backends by default, so staying
+X11-only would need `-tags x11` (otherwise `libwayland-dev` and
+`libxkbcommon-dev` become build dependencies).
+
 ### Dynamic tray icon toggle
 
 **Blocker: Fyne API** (no viable workaround).