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evan c339a6161d feat(appstore): add app detail screen, cut catalog memory use

Selecting an app now opens a detail window (name, state, description)
with Back / Install-Update-Reinstall / Delete, where delete needs
confirmation and refuses to remove AppStore itself. Install progress
replaces the button hints in that window instead of a full-screen status.

Catalog entries are kept as raw lines and expanded only for drawn rows,
and the catalog is released before net.wifiConnect() then rebuilt from
the SD cache, which is what caused OOM when bringing up Wi-Fi. Status
screens use REFRESH_FAST between updates rather than REFRESH_HALF.

2026-07-27 09:03:24 -04:00

1.7 KiB

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AppStore

Installs new Lua apps from one or more public Xteink repositories.

Bootstrap

Copy this directory to /.apps/AppStore on the SD card. On first launch, AppStore creates repositories.txt from repositories.default.txt.

Repository entries use this format:

XTEINK-REPOSITORIES|1
Name|https://host/path/catalog.txt

Screens

Repositories → Apps → app detail. Opening a repository always fetches its catalog over Wi-Fi, so the list is current on every launch. The validated catalog is then kept on the SD card and re-read when returning to the Apps list, which avoids a second fetch after an install.

The detail screen shows the app name, install state, and description, with Back / Install (Update or Reinstall when already present) / Delete. Install progress replaces the button hints in that same window rather than taking over the screen. Delete asks for confirmation and refuses to remove AppStore itself.

Memory

Catalog entries are held as raw lines and expanded only for the rows being drawn — expanding all 64 into tables costs roughly 30 KB, which has to coexist with the Wi-Fi and TLS stacks on a 380 KB device. The catalog is released entirely before net.wifiConnect() and rebuilt from the SD cache afterwards.

Installation

Packages download into /.apps/.install-<AppId>, verify declared sizes and SHA-256 hashes, require main.lua, then rename into place. Updates rename the existing tree aside first and restore it if the swap fails. Install state comes from the .manifest.hash marker written at install time.

HTTPS is encrypted without peer-certificate authentication. An active network attacker can replace both metadata and payload hashes.

1.7 KiB Raw Blame History