Accessibility (a11y) sweep — TalkBack / screen-reader tracking issue

[kasnder]

Tracking issue for ongoing accessibility (TalkBack / screen-reader) work, succeeding the broad scope of #231.

#231 was originally reported as a single unlabeled control (the app-list Internet toggle) but was intentionally left open "for further investigation" — its title is plural. This issue consolidates that broader effort so #231's original narrow item can be considered handled while the sweep continues.

Done

• Add dynamic accessibility labels to app-list Internet toggle (#231) #625 — app-list Internet toggle now has a dynamic, state-aware contentDescription; tracker-details screen switches (Tracker Protection / Internet Access / Exclude from VPN, and per-category Block) labeled.
• Accessibility sweep: label remaining unlabeled controls (#231) #634 — full sweep of remaining unlabeled/inaccessible controls:
  • Master tracker-blocking switch (actionmain.xml), VPN on/off switch (item_vpn_status.xml), blocklist enable switch + delete button (item_blocklist.xml / ActivityBlocklists).
  • Access-log status icons now announce connection allowed/blocked, network type, screen-on, and app name (AdapterLog).
  • Decorative illustrations across 12 screens marked importantForAccessibility="no".
  • Insights share button raised to a 48dp touch target; section titles marked as accessibility headings.

Pending verification

• On-device TalkBack pass for Add dynamic accessibility labels to app-list Internet toggle (#231) #625 and Accessibility sweep: label remaining unlabeled controls (#231) #634 — confirm announced text reads naturally and that state-dependent labels update after a tap (e.g. the master switch reading "Tracker blocking, on"; log rows reading "Wi-Fi, Allowed").

Candidate follow-ups (not yet addressed)

• Color-contrast review — the insights hero card uses low-alpha white text and a hardcoded light-green (#A5D6A7) percentage on a gradient; WCAG contrast not yet measured.
• Grouping of stat number + label in the insights header (currently separate TextViews) so each metric is announced as one unit.
• Live-region / dynamic announcements — consider announcing state changes (e.g. blocking enabled/disabled) where useful.
• Focus/traversal order review on the main and details screens.
• Run ./gradlew lint and triage the Accessibility category findings for anything missed.

Notes

• New accessibility strings from Add dynamic accessibility labels to app-list Internet toggle (#231) #625/Accessibility sweep: label remaining unlabeled controls (#231) #634 were added to the base English strings.xml only; translations follow via the usual localization process.
• The delete-button / decorative-image patterns already existed correctly in places (item_wg_profile.xml, item_insights_header.xml) — much of this work was making them consistent app-wide.

Refs #231