fix(keymap): match remaining letter shortcuts by typed character (#292)

#291 named letter keys by the typed character (e.key) when Alt is not held, so AZERTY Ctrl+Z is no longer Ctrl+W. Hard-coded handlers still compared the physical KeyboardEvent.code. A shared letterOf(e) in platform/keymap.ts now backs strokeOf and those handlers:

- terminal Ctrl+Shift+C / V / T (copy, paste, new tab) and Ctrl+letter control codes
- Run/Debug Configurations Ctrl/Cmd+N
- browser shortcut guards (blocked reload/print etc.)

Alt combos keep the physical key (Option / AltGr type symbols).

src/workbench/browserGuards.test.ts

@@ -56,4 +56,14 @@ describe("browser guards: context menu", () => {
     rightClick(p);
     expect(useContextMenuStore.getState().menu).toBeNull();
   });
+
+  it("blocks browser shortcuts by typed letter", () => {
+    const press = (init: KeyboardEventInit) => {
+      const e = new KeyboardEvent("keydown", { bubbles: true, cancelable: true, ...init });
+      window.dispatchEvent(e);
+      return e.defaultPrevented;
+    };
+    expect(press({ key: "p", code: "KeyR", ctrlKey: true })).toBe(true);
+    expect(press({ key: "l", code: "KeyP", ctrlKey: true })).toBe(false);
+  });
 });

src/workbench/browserGuards.ts

@@ -5,6 +5,7 @@
  * shortcuts stay untouched. A right-click no component handled on selected or
  * selectable read-only text gets IDEA's Copy menu instead of nothing.
  */
+import { letterOf } from "@/platform/keymap";
 import { copyMenuFor, showContextMenu, useContextMenuStore } from "@/ui";
 
 const BLOCKED = new Set([
@@ -23,13 +24,7 @@ const BLOCKED = new Set([
 const RELOAD = new Set(["Meta+R", "Meta+Shift+R", "Ctrl+R", "Ctrl+Shift+R", "F5", "Shift+F5"]);
 
 function keyId(e: KeyboardEvent) {
-  const key = e.code.startsWith("Key")
-    ? e.code.slice(3)
-    : e.code === "BracketLeft"
-      ? "["
-      : e.code === "BracketRight"
-        ? "]"
-        : e.key;
+  const key = letterOf(e) ?? (e.code === "BracketLeft" ? "[" : e.code === "BracketRight" ? "]" : e.key);
   return [e.ctrlKey && "Ctrl", e.altKey && "Alt", e.shiftKey && "Shift", e.metaKey && "Meta", key]
     .filter(Boolean)
     .join("+");