Reorganize project structure

checkaddy_app/screens/help.py

@@ -0,0 +1,37 @@
+from __future__ import annotations
+
+from textual import on
+from textual.app import ComposeResult
+from textual.containers import Container
+from textual.screen import ModalScreen
+from textual.widgets import Button, Static
+
+
+class HelpScreen(ModalScreen[None]):
+    def compose(self) -> ComposeResult:
+        with Container(id="help-dialog"):
+            yield Static("Keyboard shortcuts", id="help-title")
+            yield Static(
+                "Enter runs validation and lookup\n"
+                "Tab / Shift+Tab moves focus through controls\n"
+                "Ctrl+L clears the form\n"
+                "Ctrl+J toggles the JSON panel\n"
+                "Ctrl+O opens explorer for current result\n"
+                "Ctrl+G opens repository actions\n"
+                "Ctrl+1/2/3 focuses network/address/lookup\n"
+                "Alt+B / Alt+T selects previous / next network\n"
+                "Ctrl+Left / Ctrl+Right also cycles network\n"
+                "Ctrl+P opens command palette\n"
+                "F1 opens help\n"
+                "Q or Ctrl+C exits\n\n"
+                "Only public addresses are supported. Never paste private keys or seed phrases.",
+                id="help-body",
+            )
+            yield Button("Close", id="help-close", variant="primary")
+
+    def on_mount(self) -> None:
+        self.query_one("#help-close", Button).focus()
+
+    @on(Button.Pressed, "#help-close")
+    def handle_close(self) -> None:
+        self.dismiss(None)