feat(window): persist main window size/position across launches (#97)

* feat(window): persist main window size/position across launches

The main window always opened at a fixed 1400x900, forcing a manual
resize every session. Save the window geometry (normal bounds +
maximized flag) to the existing desktop prefs store on close, and
restore it in createWindow.

Saved bounds are validated by a pure sanitizer against the current
display layout before use, so stale state degrades safely instead of
producing an off-screen or absurd window:
- garbage/partial config -> 1400x900 centered defaults
- size clamped between the 800x600 window minimums and the largest
  display's workArea
- position kept only when the window overlaps a display by at least
  100x50 px (unplugged monitor / resolution change -> re-center);
  negative multi-monitor coordinates remain valid
- maximized sessions save getNormalBounds() and re-maximize on
  restore; fullscreen deliberately restores windowed

No new dependency; reuses get/setDesktopConfig (atomic write,
fail-soft) in soundfont-manager.ts. The store file is already in the
reset-app-settings delete-set, so a config reset also resets bounds.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Signed-off-by: gionnibgud <gionnibgud@gmail.com>

* fix(window): don't crash shutdown if bounds persistence write fails

The close listener called setDesktopConfig synchronously with no error
handling; a disk-full or permissions failure during the write would throw
unhandled inside the close handler, risking a shutdown crash. Wrap the
write in try/catch and log a warning instead. Flagged by CodeRabbit on PR #97.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Signed-off-by: gionnibgud <gionnibgud@gmail.com>

---------

Signed-off-by: gionnibgud <gionnibgud@gmail.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

src/main/main.ts

@@ -56,7 +56,7 @@ if (process.platform !== 'linux') {
 }
 // ──────────────────────────────────────────────────────────────────────────
 
-import { app, BrowserWindow, ipcMain, dialog, shell, session, crashReporter, powerSaveBlocker, systemPreferences } from 'electron';
+import { app, BrowserWindow, ipcMain, dialog, shell, session, crashReporter, powerSaveBlocker, systemPreferences, screen } from 'electron';
 import * as path from 'path';
 import * as fs from 'fs';
 import { execFileSync } from 'child_process';
@@ -125,6 +125,7 @@ import { initSoundfontManager, getDesktopConfig, setDesktopConfig } from './soun
 import * as updateManager from './update-manager';
 import type { UpdateChannel } from './update-manager';
 import { installAppMenu } from './app-menu';
+import { sanitizeWindowBounds, MIN_WIDTH, MIN_HEIGHT } from './window-bounds';
 
 // Linux: enable Chromium's PipeWire capturer feature so getUserMedia can see
 // audio devices on PipeWire-only distros (Fedora 36+, recent Ubuntu, Arch).
@@ -455,15 +456,43 @@ function isLocalServiceUrl(url: string, backendPort: number): boolean {
 }
 
 function createWindow(port: number): void {
+    // Restore the previous session's window geometry, validated against the
+    // current display layout so stale bounds (unplugged monitor, resolution
+    // change, hand-edited config) can't put the window off-screen. When x/y
+    // are absent Electron centers the window as before.
+    const restored = sanitizeWindowBounds(
+        getDesktopConfig().windowBounds,
+        screen.getAllDisplays().map((d) => d.workArea),
+    );
     mainWindow = new BrowserWindow({
-        width: 1400,
-        height: 900,
-        minWidth: 800,
-        minHeight: 600,
+        x: restored.x,
+        y: restored.y,
+        width: restored.width,
+        height: restored.height,
+        minWidth: MIN_WIDTH,
+        minHeight: MIN_HEIGHT,
         title: 'fee[dB]ack',
         backgroundColor: '#0f172a', // slate-900 to match Slopsmith UI
         webPreferences: rendererWebPreferences,
     });
+    if (restored.maximized) mainWindow.maximize();
+
+    // Persist geometry on close. getNormalBounds() so a maximized session
+    // saves the underlying windowed size, restored + re-maximized next launch.
+    // ponytail: fullscreen is deliberately not persisted (launching straight
+    // into fullscreen is jarring, especially on macOS) and we save on close
+    // only — a crash loses the last session's geometry; add debounced
+    // resize/move saving if that ever matters.
+    mainWindow.on('close', () => {
+        if (!mainWindow || mainWindow.isDestroyed()) return;
+        try {
+            setDesktopConfig({
+                windowBounds: { ...mainWindow.getNormalBounds(), maximized: mainWindow.isMaximized() },
+            });
+        } catch (err) {
+            console.warn('[main] Failed to persist window bounds on close:', err);
+        }
+    });
 
     // Forward renderer console to main process stdout
     mainWindow.webContents.on('console-message', (_event, level, message, line, sourceId) => {