Windows compatibility pass (beta target)

External editor via cmd/start + exe picker; Permissions hidden for
Windows-local (chmod only flips read-only there); Explorer/Recycle Bin
wording; Ctrl vs Cmd shortcut labels; separator-aware path joins +
drive-root detection; drives list in the panel source picker; icon.ico
+ colored tray icon; icacls ACL on connections.json; README Windows
(beta) section with upstream known issues and a smoke-test checklist.
Runtime paths pending first boot on a real Windows machine.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/bun/rpc-handlers.ts

@@ -3,6 +3,7 @@ import type { AppRPC, EditorOpenContext } from "../shared/rpc";
 import { effectiveConcurrency, type AppSettings, type Result } from "../shared/types";
 import type { PanelContextMenu } from "./context-menu";
 import { readFileText, writeFileText, type EditManager } from "./edits";
+import { listLocalDrives } from "./fs/local";
 import type { SessionRegistry } from "./fs/registry";
 import { SftpProvider } from "./fs/sftp";
 import type { ConnectionStore } from "./store/connections";
@@ -101,8 +102,9 @@ function connectionStoreHandlers(store: ConnectionStore, onChanged: () => void)
 const pickKeyFileHandler = () =>
 	wrap(async () => {
 		const { homedir } = await import("node:os");
+		const { join } = await import("node:path");
 		const picked = await Utils.openFileDialog({
-			startingFolder: `${homedir()}/.ssh`,
+			startingFolder: join(homedir(), ".ssh"),
 			allowedFileTypes: "*",
 			canChooseFiles: true,
 			canChooseDirectory: false,
@@ -241,9 +243,17 @@ export function createAppRPC({
 
 				pickEditorApp: () =>
 					wrap(async () => {
+						// PORTABILITY: apps live in different places per OS
+						const { homedir } = await import("node:os");
+						const [startingFolder, allowedFileTypes] =
+							process.platform === "darwin"
+								? ["/Applications", "app"]
+								: process.platform === "win32"
+									? [process.env.ProgramFiles ?? "C:\\Program Files", "exe"]
+									: [homedir(), "*"];
 						const picked = await Utils.openFileDialog({
-							startingFolder: "/Applications",
-							allowedFileTypes: "app",
+							startingFolder,
+							allowedFileTypes,
 							canChooseFiles: true,
 							canChooseDirectory: false,
 							allowsMultipleSelection: false,
@@ -301,6 +311,8 @@ export function createAppRPC({
 						events.showAbout();
 						return {};
 					}),
+
+				listDrives: () => wrap(async () => ({ drives: listLocalDrives() })),
 			},
 		},
 	});