yoda: cosmic-files customizations (squashed 21 commits)

This commit squashes the 21 local commits that customize cosmic-files for
the yoda stack, to allow a clean rebase on upstream/master.

Original commits (chronological):

- 9bcfe7a Cargo.toml: patch libcosmic via local path for dev builds
- 04abd13 yoda: depend on libcosmic-yoda (path) instead of upstream libcosmic
- 02adcc3 lockfile: libcosmic-yoda 0.1.0-yoda -> 0.1.0-yoda.2
- a025fd6 yoda: prefer cosmic-yoterm over upstream cosmic-term in terminal fallback
- e8d62ae yoda: add "Always use this app" toggle to OpenWith dialog
- 8fb2b15 yoda wayland-v5: redirect window_clipboard + cosmic-text to local forks
- 0595296 yoda: Dolphin-style quick actions toolbar under the headerbar
- 4b6d345 yoda: fix missing rename icon in toolbar
- 8b51af1 yoda: use pencil-symbolic for the Rename toolbar button
- 33a5c8f yoda: phase 2 - customizable toolbar (settings toggles per button)
- 1cf17dc yoda: phase 3 - drag-drop toolbar editor in Settings
- 11d4357 yoda: add up/down buttons next to drag handle in toolbar editor
- af843d2 yoda: direct drag-drop reorder on the toolbar itself
- 94c3e6c yoda: toolbar as segmented_button for working drag reorder
- f053819 yoda: toolbar icon-only + clean visual (Control style, 32px squares)
- 338354c Improve initial directory listing latency
- d080bc8 Resolve cosmic-files warnings without masking
- 69c35ab yoda: switch window_clipboard patch to public Forgejo fork
- 35e115f yoda: switch cosmic-text patch to public Forgejo fork
- 6f3adcd chore: clean feature-gated warnings
- 57ab1ec fix: clean files warnings for terminal build

Original tip preserved as tag backup/pre-rebase-upstream-20260524.

src/mounter/mod.rs

@@ -75,10 +75,10 @@ impl MounterItem {
         }
     }
 
-    pub fn icon(&self, symbolic: bool) -> Option<widget::icon::Handle> {
+    pub fn icon(&self, _symbolic: bool) -> Option<widget::icon::Handle> {
         match self {
             #[cfg(feature = "gvfs")]
-            Self::Gvfs(item) => item.icon(symbolic),
+            Self::Gvfs(item) => item.icon(_symbolic),
             Self::None => unreachable!(),
         }
     }
@@ -103,6 +103,7 @@ impl MounterItem {
 pub type MounterItems = Vec<MounterItem>;
 
 #[derive(Clone, Debug)]
+#[allow(dead_code)]
 pub enum MounterMessage {
     Items(MounterItems),
     MountResult(MounterItem, Result<bool, String>),