Install-this-app, remove-app, the extension install flow (install,
already installed, installed, not found, failed) and the add-on restart
question were still bare OS message boxes titled "theseus-navigator"
after page dialogs moved to the sheet. askSheet() is a drop-in for
dialog.showMessageBox with the same options and result: title as the
headline, detail under it, the caller's buttons with the default first,
an optional checkbox, and the app's or extension's icon when there is
one. Tone follows the box type (error, warning) or the wording. The
native box stays as the fallback when the browser window is not there,
and for the two synchronous cases (beforeunload, app windows).
0.3.56 was cut from the Aegis line (WizardConnect auto-detection, Aegis
0.8.x, PDF Editor and VPN updates) on top of 0.3.55; 0.3.57 carries that
plus the install-as-app feature and the two main-process crash fixes.
Electron ships Chromium's renderer without the browser-side web-app
install machinery, so beforeinstallprompt never fires and every site's
own "Install our app" chip (coin-spectrum.com's, for one) stays hidden
in Theseus. The browser side now exists:
- webapps.js reads a page's <link rel="manifest">, accepts it when it
names an app with a standalone-style display mode and a start_url on
the page's origin, and records the descriptor on the tab.
- The address bar shows an install chip for such pages (filled once the
app is installed: click then opens or removes it); the page context
menu carries the same entry.
- Pages get a synthetic beforeinstallprompt whose prompt() routes to the
Theseus install dialog and resolves userChoice like Chrome, and an
appinstalled event afterwards, so sites' own chips appear and work.
- Installing stores the app under <userData>/webapps/, wraps the
manifest icon into an .ico, writes a Start Menu (optionally desktop)
shortcut that launches Theseus with --app=<start_url>, and opens the
app in a chromeless window with its own taskbar identity. The window
shares the session, BCNR resolution, fingerprint and add-on bridges
with tabs; popups and "open in Theseus" go to the browser window,
Alt+arrows / F5 / Ctrl+R cover navigation without a toolbar.
- Theseus takes the single-instance lock so a shortcut launch lands in
the running browser (second-instance) instead of a second profile
owner; launched cold, --app= opens only the app window and a later
plain launch brings the browser window back.
