Research Electron build tools and packaging

CLAUDE.md

@@ -26,8 +26,16 @@ npm test-window
 # TypeScript type checking in watch mode
 npm run tsc-watch
 
-# Build for production
+# Build for production (all platforms)
 npm run build
+
+# Build for specific platform
+npm run build:mac
+npm run build:win
+npm run build:linux
+
+# Build unpacked directory only (for testing)
+npm run build:dir
 ```
 
 ## Architecture Overview

app/build/resources/linux/mailspring.appdata.xml

@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<component type="desktop">
+  <id>mailspring</id>
+  <metadata_license>CC0-1.0</metadata_license>
+  <name>Mailspring</name>
+  <summary>The best email app for people and teams at work</summary>
+  <description>
+    <p>
+      Mailspring is a new version of Nylas Mail maintained by one of the original authors. It's
+      faster, leaner, and shipping today! It replaces the JavaScript sync code in Nylas Mail with
+      a new C++ sync engine based on Mailcore2. It uses roughly half the RAM and CPU of Nylas Mail
+      and idles with almost zero "CPU Wakes", which translates to great battery life. It also has
+      an entirely revamped composer and other great new features.
+    </p>
+    <p>
+      Mailspring comes packed with powerful features like Unified Inbox, Snooze, Send Later, Mail
+      Rules, Templates and more. Mailspring Pro, which you can unlock with a monthly subscription,
+      adds even more features for people who send a ton of email: link tracking, read receipts,
+      mailbox analytics, contact and company profiles. All of these features run in the client -
+      Mailspring does not send your email credentials to the cloud.
+    </p>
+  </description>
+  <url type="homepage">https://getmailspring.com/</url>
+  <url type="bugtracker">https://community.getmailspring.com/c/bugs</url>
+  <url type="help">http://support.getmailspring.com/</url>
+  <url type="vcs-browser">https://github.com/Foundry376/Mailspring</url>
+  <launchable type="desktop-id">Mailspring.desktop</launchable>
+
+  <developer id="com.getmailspring">
+    <name>Mailspring</name>
+  </developer>
+  <project_license>GPL-3.0+</project_license>
+
+  <screenshots>
+    <screenshot type="default">
+      <caption>Mailspring Hero</caption>
+      <image type="source">https://getmailspring.com/static/img/hero_graphic_linux@2x.png</image>
+    </screenshot>
+  </screenshots>
+
+  <releases>
+    <release version="1.19.0" date="2026-03-09" />
+    <release version="1.18.0" date="2026-02-22" />
+    <release version="1.17.4" date="2026-02-11" />
+    <release version="1.17.3" date="2026-01-31" />
+    <release version="1.17.2" date="2026-01-24" />
+    <release version="1.17.1" date="2026-01-15" />
+    <release version="1.17.0" date="2026-01-14" />
+    <release version="1.16.0" date="2025-07-16" />
+    <release version="1.15.1" date="2025-01-27" />
+    <release version="1.15.0" date="2025-01-02" />
+    <release version="1.14.0" date="2024-09-13" />
+    <release version="1.13.3" date="2024-01-08" />
+    <release version="1.13.2" date="2023-12-10" />
+    <release version="1.13.1" date="2023-11-21" />
+    <release version="1.13.0" date="2023-11-20" />
+    <release version="1.12.0" date="2023-11-14" />
+    <release version="1.11.0" date="2023-07-28" />
+    <release version="1.10.8" date="2022-12-29" />
+    <release version="1.10.7" date="2022-11-21" />
+    <release version="1.10.6" date="2022-08-10" />
+    <release version="1.10.5" date="2022-08-10" />
+    <release version="1.10.4" date="2022-08-09" />
+    <release version="1.10.3" date="2022-04-18" />
+    <release version="1.10.2" date="2022-03-29" />
+    <release version="1.10.1" date="2022-03-12" />
+    <release version="1.10.0" date="2022-02-28" />
+    <release version="1.9.2" date="2021-09-06" />
+    <release version="1.9.1" date="2021-04-16" />
+    <release version="1.9.0" date="2021-04-14" />
+    <release version="1.8.0" date="2021-01-20" />
+  </releases>
+  <content_rating type="oars-1.0" />
+</component>

app/build/resources/linux/mailspring.desktop

@@ -0,0 +1,113 @@
+[Desktop Entry]
+Name=Mailspring
+Comment=The best email app for people and teams at work
+GenericName=Mail Client
+Exec=mailspring %U
+Icon=mailspring
+Type=Application
+StartupNotify=true
+StartupWMClass=Mailspring
+Categories=GNOME;GTK;Network;Email;
+Keywords=email;internet;
+MimeType=x-scheme-handler/mailto;x-scheme-handler/mailspring;
+Actions=NewMessage
+X-GNOME-UsesNotifications=true
+
+[Desktop Action NewMessage]
+Name=New Message
+Name[af]=Nuwe boodskap
+Name[am]=አዲስ መልዕክት
+Name[ar]=رسالة جديدة
+Name[ast]=Mensaxe nuevu
+Name[az]=Yeni mesaj
+Name[be]=Новы ліст
+Name[bg]=Ново съобщение
+Name[bn]=নতুন বার্তা
+Name[br]=Kemennadenn nevez
+Name[bs]=Nova poruka
+Name[ca]=Nou missatge
+Name[co]=Nu missaghju nova
+Name[cs]=Nová zpráva
+Name[cy]=Neges Newydd
+Name[da]=Ny besked
+Name[de]=Neue E-Mail
+Name[el]=Νέο μήνυμα
+Name[en]=New Message
+Name[eo]=Nova Mesaĝo
+Name[es]=Mensaje nuevo
+Name[et]=Uus kiri
+Name[eu]=Mezu berria
+Name[fa]=پیام جدید
+Name[fi]=Uusi viesti
+Name[fr]=Nouveau message
+Name[fy]=Nij berjocht
+Name[ga]=Teachtaireacht Nua
+Name[gd]=Teachdaireachd ùr
+Name[gl]=Nova menxase
+Name[gu]=નવો સંદેશો
+Name[ha]=Sabon Saƙon
+Name[he]=הודעה חדשה
+Name[hi]=नया संदेश
+Name[hr]=Nova poruka
+Name[ht]=Nouvo mesaj
+Name[hu]=Új üzenet
+Name[hy]=Նոր նամակ
+Name[id]=Pesan Baru
+Name[ig]=Ozi ọhụrụ
+Name[is]=Nýr póstur
+Name[it]=Nuovo messaggio
+Name[ja]=新規メッセージ
+Name[ka]=ახალი წერილი
+Name[kk]=Жаңа хабарлама
+Name[km]=សារ​ថ្មី
+Name[kn]=ಹೊಸ ಸಂದೇಶ
+Name[ko]=새로운 메세지
+Name[ku]=Peyama Nû
+Name[ky]=Жаңы кат
+Name[lb]=Neien Message
+Name[lo]=ຂໍ້ຄວາມໃຫມ່
+Name[lt]=Naujas laiškas
+Name[lv]=Jauns ziņojums
+Name[mg]=Hafatra vaovao
+Name[mi]=Karere Hou
+Name[mk]=Нова порака
+Name[mn]=Шинэ захиа
+Name[ms]=Mesej Baru
+Name[mt]=Messaġġ ġdid
+Name[my]=စာအသစ်
+Name[nb]=Ny melding
+Name[ne]=नयाँ सन्देश
+Name[nl]=Nieuw bericht
+Name[nr]=Umlayezo Omutjha
+Name[oc]=Nouveau message
+Name[pa]=ਨਵਾਂ ਸੁਨੇਹਾ
+Name[pl]=Nowa wiadomość
+Name[pt_BR]=Nova Mensagem
+Name[pt]=Nova Mensagem
+Name[rm]=Nov messadi
+Name[ro]=Mesaj nou
+Name[ru]=Новое сообщение
+Name[si]=නව ලිපියක්
+Name[sk]=Nová správa
+Name[sl]=Novo sporočilo
+Name[sm]=Faʻamatalaga fou
+Name[so]=Farriin Cusub
+Name[sq]=Mesazh i Ri
+Name[sr]=Nuevo mensaje
+Name[ss]=Umlayeto lomusha
+Name[st]=Molaetsa o Motjha
+Name[sv]=Nytt brev
+Name[ta]=புதிய செய்தி
+Name[th]=ข้อความใหม่
+Name[tr]=Yeni İleti
+Name[ts]=Hungu Rintshwa
+Name[uk]=Новий лист
+Name[uz]=Yangi xabar
+Name[ve]=Mulaedza Muswa
+Name[vi]=Thư mới
+Name[xh]=Umyalezo omtsha
+Name[zh_CN]=新邮件
+Name[zh_TW]=新增郵件
+Name[zh]=新信息
+Name[zu]=Umyalezo omusha
+Exec=mailspring mailto: