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4grayandClaude Opus 5
96d89b35ce
Every runtime path for an OS-supplied playlist existed, but no packaging metadata claimed the file types — so the OS never offered IPTVnator as a handler and `open-file` could not fire from Finder. `fileAssociations` declares one entry per extension. Electron Builder derives all three platform registrations from it: macOS `CFBundleDocumentTypes` (the prerequisite for `open-file`), the NSIS registry entries, and, on Linux, the desktop entry's `MimeType` plus `/usr/share/mime/packages/iptvnator.xml` for deb/rpm/pacman. Neither platform needs a dedicated icon — both fall back to the app icon. Declaring `MimeType` under `linux.desktop.entry` would not have worked: Electron Builder assigns the association-derived value *after* spreading that object, so an explicit key there is silently overwritten. The per-association `mimeType` fields produce the same entry through the supported path. Registering the types also exposes a gap in the delivery side. The generated Linux `Exec` ends in `%U`, so file managers hand over a percent-encoded `file://` URI rather than a path, which `createPlaylistOpenRequest` would have resolved into a bogus relative path. It now decodes a `file://` candidate before the extension check. Suppressing the `%U` instead would mean putting an exec code in `linux.executableArgs`, which also passes it to the app as a real argument. Verified on macOS against a signed packaged bundle: Launch Services lists the app as a `public.m3u-playlist` handler, and an LS-initiated open imports the playlist both on a cold launch and against the already-running process. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>