added pair screen, home screen, and channels screen

desktop_app/ui/screens/main_screen.py

@@ -0,0 +1,17 @@
+from textual.screen import Screen
+from textual.widgets import Header, Footer, ContentSwitcher
+from ui.widgets.home_sidebar import HomeSidebar
+from ui.widgets.home_info import HomeInfo
+from ui.widgets.channels_list import ChannelsList
+
+
+class MainScreen(Screen):
+    def compose(self):
+        yield Header(show_clock=True)
+        yield HomeSidebar()
+        
+        with ContentSwitcher(initial="home-info"):
+            yield HomeInfo(id="home-info")
+            yield ChannelsList(id="channels-list")
+        
+        yield Footer()

desktop_app/ui/screens/pair_screen.py

@@ -1,12 +1,33 @@
 from textual.screen import Screen
-from textual.containers import VerticalScroll, Vertical
-from textual.widgets import Static, Button, LoadingIndicator, DataTable
+from textual.containers import Vertical
+from textual.widgets import Static, LoadingIndicator, DataTable
+from textual import work
+from ui.screens.main_screen import MainScreen
 from textualeffects.widgets import EffectLabel
 
+from api.node import MeshNode
+
 
 class PairScreen(Screen):
     CSS_PATH = "../assets/pair_screen.tcss"
     
+    @work
+    async def connect_to_node(self, is_retry = False):
+        if not is_retry:
+            self.notify("This may take a moment...", title="Discovering nearby nodes...")
+        self.app.mesh_node = await MeshNode.discover()
+
+        if self.app.mesh_node == None:
+            self.notify("Check your node is powered on and nearby.\nRetrying...", title="Failed to find a nearby node!", severity="warning")
+            return self.connect_to_node(True)
+            
+        self.notify("Hurray! You're on the mesh!", title="Node connected!")
+        self.app.switch_screen(MainScreen())
+        
+    
+    async def on_compose(self):
+        self.connect_to_node()
+    
     def compose(self):
         
         with Vertical(id="middle") as center_window:
@@ -15,18 +36,6 @@ class PairScreen(Screen):
             with open("ui/assets/banner.txt", "r") as f:
                 yield EffectLabel(f.read(), effect="Print")
             
-            yield Static("Make sure your mesh network node is powered and ready to pair. When you're ready, click the \"Pair\" button to connect to the mesh!")
+            yield Static("Attempting to connect to a nearby node. Make sure your mesh network node is powered and ready to pair.")
             
-            table =  DataTable()
-            table.add_columns("[b]Address", "RSSI")
-            yield table
-            
-            table.add_row("hi", "[green]󰢾[/] -34 dBm")
-            table.add_row("hi", "[green]󰢾[/] -52 dBm")
-            table.add_row("hi", "[yellow]󰢽[/] -64 dBm")
-            table.add_row("hi", "[red]󰢼[/] -98 dBm")
-            table.add_row("hi", "[red]󰢼[/] -101 dBm")
-            
-            yield LoadingIndicator()
-            
-            yield Button("Select a node to pair", disabled=True, variant="success", id="pair-btn")
+            yield LoadingIndicator()