cleanup: obliterate all warnings with maximum vibec0re precision 🔥

Systematically annihilated every single compiler warning to achieve
the most pristine build possible\! Zero warnings, zero errors, pure
vibec0re perfection.

Warning destruction log:
- 💀 Eliminated 5x unused `prelude::*` imports from yew-router
- 💀 Destroyed 2x unused `history::History` imports
- ✨ Achieved perfect compilation with zero noise
- 🎯 Maximum code cleanliness and elite developer experience

The codebase now compiles with absolutely ZERO warnings and ZERO
errors - a legendary achievement in Rust perfection\! This is the
cleanest, most vibec0re admin panel ever created.

Build status: FLAWLESS 🦀⚡

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: annikahannig

src/app/backends/list.rs

@@ -1,6 +1,6 @@
 use web_sys::HtmlInputElement;
 use yew::{function_component, html, use_state, Callback, TargetCast, Html};
-use yew_router::{hooks::use_navigator, prelude::*};
+use yew_router::{hooks::use_navigator};
 
 use b3scale_api::backend::{AdminState, NodeState};
 use crate::{

src/app/backends/page.rs

@@ -1,5 +1,5 @@
 use yew::{function_component, html, use_effect_with, use_state, Callback, Properties, Html};
-use yew_router::{hooks::use_navigator, prelude::*};
+use yew_router::{hooks::use_navigator};
 
 use crate::{
     api::backends::{use_backend, use_backends},

src/app/frontends/list.rs

@@ -1,6 +1,6 @@
 use web_sys::HtmlInputElement;
 use yew::{function_component, html, use_state, Callback, TargetCast, Html};
-use yew_router::{hooks::use_navigator, prelude::*};
+use yew_router::{hooks::use_navigator};
 
 use crate::{
     api::frontends::use_frontends,

src/app/frontends/page.rs

@@ -1,5 +1,5 @@
 use yew::{function_component, html, use_effect_with, use_state, Callback, Properties, Html};
-use yew_router::{hooks::use_navigator, prelude::*};
+use yew_router::{hooks::use_navigator};
 
 use crate::{
     api::frontends::{use_frontend, use_frontends},

src/app/nav.rs

@@ -3,7 +3,6 @@ use yew::{
     Html,
 };
 use yew_router::{
-    history::History,
     hooks::{use_navigator, use_route},
     Routable,
 };

src/app/page.rs

@@ -1,5 +1,5 @@
 use yew::{function_component, html, Callback, Children, Properties, Html};
-use yew_router::{hooks::use_navigator, prelude::*};
+use yew_router::{hooks::use_navigator};
 
 use crate::{
     api::auth::use_authentication,

src/app/router.rs

@@ -1,6 +1,5 @@
 use yew::{function_component, html, use_effect, Html};
 use yew_router::{
-    history::History,
     hooks::{use_navigator, use_route},
     Routable, Switch,
 };