leaf_widgets from Gitea (v0.1.0) instead of a local path, so CI can build

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/ARCHITECTURE.md

@@ -1029,7 +1029,8 @@ every `state` and feed), the pure rules in `queue_logic.dart`, the UI in
   it stays while the mouse is on either, holds the controls up
   (`ControlsHold`) while shown, and a click on it opens the queue. Its
   title opens the queue as a
-  `LeafPopover` (package `leaf_widgets`, an overlay rather than a route)
+  `LeafPopover` (package `leaf_widgets`, a git dependency like `fox_utils`;
+  an overlay rather than a route)
   hanging under it, right edges aligned: the app's glass (`AppGlass`),
   the menus' paddings and row hover, 64 px rows with an 80 px 16:9
   picture, title, second line, "length · added by (avatar) name · how", a drag handle

docs/ROADMAP.md

@@ -37,10 +37,7 @@ off by deleting it in the same commit as the code. Wire changes also edit
    filter on the Schedule from the user's AniList lists. This is the
    Schedule's personal tracking; AnimeFlow has no per-user follow.
 
-5. **Ops**: `leaf_widgets` (the Up next popover's `LeafPopover`) is a
-   local path dependency: make it a git dependency like `fox_utils`
-   before the next release (CI cannot see the path), or go back to the
-   app's popover route. Check shaders on Windows; the relay e2e "source drops
+5. **Ops**: Check shaders on Windows; the relay e2e "source drops
    uncleanly and resumes" fails about half the time under the full suite.
 
 6. **Windows: first real use.** CI builds and publishes