add base-apps with manifests, layout system, and testing documentation

- Rename test-apps to base-apps with proper manifest.json for each app
- Add is_system_app flag to app discovery and Lua API
- Fix icon path resolution for /system/icons/ paths
- Add layout.lua and layout.rcss for reusable UI components
- Update home screen to dynamically load all apps from manifests
- Update all app RML files to use layout components
- Comprehensive testing framework documentation with JSON action format
- Add tests/ directory structure for automated UI testing

base-apps/scripts/layout.lua

@@ -0,0 +1,103 @@
+-- Layout System for Virtual Smartphone
+-- Provides reusable UI component helpers
+-- Requires navigation.lua to be loaded first
+
+-- Icon paths (relative to assets/)
+local ICON_PATH = "../../icons/"
+
+-- Default icons
+local icons = {
+    back = ICON_PATH .. "back.tga",
+    home = ICON_PATH .. "home.tga",
+    menu = ICON_PATH .. "menu.tga",
+    search = ICON_PATH .. "search.tga",
+    more = ICON_PATH .. "more.tga",
+    close = ICON_PATH .. "close.tga",
+    wifi = ICON_PATH .. "wifi.tga",
+    signal = ICON_PATH .. "signal.tga",
+    battery = ICON_PATH .. "battery.tga"
+}
+
+-- Get current time formatted as HH:MM
+local function getCurrentTime()
+    -- In sandbox, we might not have os.date, use a default
+    if os and os.date then
+        return os.date("%H:%M")
+    end
+    return "12:30"
+end
+
+-- Update status bar time
+function updateStatusTime(doc)
+    local timeEl = doc:GetElementById("status-time")
+    if timeEl then
+        timeEl.inner_rml = getCurrentTime()
+    end
+end
+
+-- Initialize status bar with current time
+-- Call from document onload
+function initStatusBar(doc)
+    updateStatusTime(doc)
+
+    -- Set up timer to update time every minute if timers are available
+    if setTimeout then
+        local function updateLoop()
+            updateStatusTime(doc)
+            setTimeout(updateLoop, 60000)
+        end
+        setTimeout(updateLoop, 60000)
+    end
+end
+
+-- Initialize app bar back button
+-- Call from document onload
+function initAppBar(doc)
+    local backBtn = doc:GetElementById("app-bar-back")
+    if backBtn then
+        -- Back button is handled via onclick in RML
+        -- This is for any additional setup
+    end
+end
+
+-- Initialize system navigation bar
+-- Call from document onload
+function initSystemNav(doc)
+    -- Navigation buttons are handled via onclick in RML
+    -- This is for any additional setup
+end
+
+-- Full layout initialization
+-- Call from document onload: initLayout(document)
+function initLayout(doc)
+    initStatusBar(doc)
+    initAppBar(doc)
+    initSystemNav(doc)
+    print("Layout initialized")
+end
+
+-- Handle back button press (for app bar or system nav)
+function onBackPressed()
+    if canGoBack and canGoBack() then
+        goBack()
+    else
+        -- If at root, go home
+        if goHome then
+            goHome()
+        end
+    end
+end
+
+-- Handle home button press
+function onHomePressed()
+    if goHome then
+        goHome()
+    end
+end
+
+-- Handle recent apps button press (placeholder)
+function onRecentPressed()
+    print("Recent apps pressed (not implemented)")
+end
+
+print("Layout system loaded")