Misc · Terms and notices: licenses, consent and a cookie banner

misc::LicenseViewer lists what a product ships with each license beside
the chosen one's text. misc::ConsentDialog asks for a box before Accept
and answers each way out once, accept or decline. misc::CookieBanner
takes Accept all, Reject all, or a switch per kind through Choose, which
turns into Save choices on its focus. ChangeLog Viewer points to
data_display::Changelog.

tasks/ch31-43.md

@@ -333,10 +333,10 @@
 
 ## T42e Misc · Terms and notices
 
-- [ ] ChangeLog Viewer → `data_display::Changelog`
-- [ ] LicenseViewer
-- [ ] Terms / Consent Dialog
-- [ ] CookieBanner
+- [x] ChangeLog Viewer → `data_display::Changelog`
+- [x] LicenseViewer → `misc::LicenseViewer`: each package with its version and license, beside the chosen one's text, which scrolls; narrow, the text drops below the list
+- [x] Terms / Consent Dialog → `misc::ConsentDialog` on `overlays::Dialog`: a box to agree, and Accept asks for it until ticked; each way out answers once, accept or decline
+- [x] CookieBanner → `misc::CookieBanner`: Accept all, Reject all, or Choose, which turns into Save choices over a switch for each kind; necessary cookies stay on
 
 ## T42f Misc · Web