Release Preview 20 shared desktop, Android and Sargo updates

Restore Gaia settings and media workflows, extend native network adapters, and align the APK payload. Generate French/English changelogs and website entries from the simplified JSON source.

Validation: shared JS and Tundra unit tests; desktop workflows and persistence; signed APK payload parity; Sargo RAM and installed startup with boot readback. Android runtime qualification is recorded separately.

tools/test-settings-selector.py

@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+"""Use trusted input to open Gaia's selector, commit/cancel and reopen it."""
+import importlib.util,json,time,os
+from pathlib import Path
+from marionette_client import Client
+spec=importlib.util.spec_from_file_location('probe',Path(__file__).with_name('probe-desktop.py'))
+p=importlib.util.module_from_spec(spec);spec.loader.exec_module(p)
+with Client(2857) as c:
+ p.register(c)
+ def ev(code):
+  r=p.evaluate(c,'settings',code);assert 'error' not in r,r
+  return r.get('value')
+ def wait(code):
+  for _ in range(80):
+   v=ev(code)
+   if v:return v
+   time.sleep(.1)
+  raise AssertionError(code)
+ def tap(selector, gesture=None):
+  point=ev('const e=document.querySelector('+json.dumps(selector)+');e.scrollIntoView({block:"center"});const r=e.getBoundingClientRect();return {x:r.x+r.width/2,y:r.y+r.height/2};')
+  method=gesture or ('Tap' if os.environ.get('VULPES_DIRECT_TOUCH') and selector=='#vulpes-theme' else 'MouseClick')
+  if method=='Swipe':point.update(toX=point['x']+30,toY=point['y'])
+  result=c.call('WebDriver:ExecuteAsyncScript',{'script':'''const done=arguments[arguments.length-1];const w=Services.wm.getMostRecentWindow('vulpes:host');function find(b){if(b.currentWindowGlobal?.documentURI.spec.startsWith('http://settings.localhost:8765/'))return b;for(const child of b.children){const found=find(child);if(found)return found;}}const bc=find(w.document.getElementById('system').browsingContext);bc.currentWindowGlobal.getActor('VulpesProbe').sendQuery(METHOD,POINT).then(done,e=>done({error:String(e)}));'''.replace('POINT',json.dumps(point)).replace('METHOD',json.dumps(method)),'args':[],'newSandbox':True,'sandbox':'system','scriptTimeout':10000})
+  assert result['value'] is True,result
+  time.sleep(.3)
+ p.evaluate(c,'system','ScreenManager.turnScreenOn(true);if(Service.query("locked"))await Service.request("unlock",{forcibly:true});await VulpesCompat.call("apps.launch",{manifestURL:"http://settings.localhost:8765/manifest.webapp"});return true;')
+ wait('return document.readyState==="complete" && typeof require==="function";')
+ previous=ev('return await VulpesCompat.call("appearance.current",{});')
+ try:
+  ev('const s=await new Promise(r=>require(["modules/settings_service"],r));await s.navigate("display");await navigator.mozSettings.createLock().set({"vulpes.theme":"light"});return true;')
+  wait('return !!document.querySelector("#vulpes-theme");')
+  time.sleep(1)
+  tap('#vulpes-theme','Swipe')
+  assert ev('return !document.getElementById("vulpes-value-selector");'), 'A drag must not open the selector'
+  tap('#vulpes-theme')
+  wait('return !!document.querySelector("#vulpes-value-selector");')
+  wait('return getComputedStyle(document.querySelector("#vulpes-value-selector")).backgroundColor!=="rgba(0, 0, 0, 0)";')
+  tap('#vulpes-value-selector [data-value="dark"]')
+  tap('#vulpes-value-selector [data-action="confirm"]')
+  wait('return document.documentElement.dataset.vulpesTheme==="dark" && !document.getElementById("vulpes-value-selector");')
+  tap('#vulpes-theme');tap('#vulpes-value-selector [data-value="light"]');tap('#vulpes-value-selector [data-action="cancel"]')
+  assert ev('return document.documentElement.dataset.vulpesTheme==="dark";')
+  tap('#vulpes-theme');tap('#vulpes-value-selector [data-value="light"]');tap('#vulpes-value-selector [data-action="confirm"]')
+  wait('return document.documentElement.dataset.vulpesTheme==="light";')
+  print('PASS '+('direct touch' if os.environ.get('VULPES_DIRECT_TOUCH') else 'mouse via touch simulator')+': drag ignored, open, styled selector, dark, cancel, reopen, light')
+ finally:ev('await navigator.mozSettings.createLock().set({"vulpes.theme":'+json.dumps(previous)+'});return true;')