[Config-driven linear onboarding dialogs] Port existing screens (skip flow + dock/widget steps)

[LukasPaczos]

Task/Issue URL: https://app.asana.com/1/137249556945/project/1208671518894266/task/1217183142109150?focus=true
Tech Design URL (if applicable): https://app.asana.com/1/137249556945/project/481882893211075/task/1216854264994244
API Proposals URL(s) (if applicable):

Description

Step 3 of the tech design: ports the remaining screens to the config-driven onboarding renderer. This PR covers below binders:

• Add to dock
• Add widget
• Quick Setup

Steps to test this PR

• Apply below patch:

diff --git a/app/src/main/java/com/duckduckgo/app/onboarding/orchestrator/NewUserOnboardingPlanProvider.kt b/app/src/main/java/com/duckduckgo/app/onboarding/orchestrator/NewUserOnboardingPlanProvider.kt
index df50491818..446dd61735 100644
--- a/app/src/main/java/com/duckduckgo/app/onboarding/orchestrator/NewUserOnboardingPlanProvider.kt
+++ b/app/src/main/java/com/duckduckgo/app/onboarding/orchestrator/NewUserOnboardingPlanProvider.kt
@@ -155,10 +155,10 @@ class NewUserOnboardingPlanProvider @Inject constructor(
                 add(initialStep(firstDialog))
                 add(comparisonChartStep())
                 add(defaultBrowserPromptStep())
-                if (showDock) {
+                if (true) {
                     add(addToDockStep())
                 }
-                if (showWidget) {
+                if (true) {
                     add(widgetPromptStep(ctx))
                     add(addWidgetStep(ctx))
                 }
diff --git a/app/src/main/java/com/duckduckgo/app/onboardingbranddesignupdate/OnboardingBrandDesignUpdateToggles.kt b/app/src/main/java/com/duckduckgo/app/onboardingbranddesignupdate/OnboardingBrandDesignUpdateToggles.kt
index b6a1e4d352..41a8d85ad4 100644
--- a/app/src/main/java/com/duckduckgo/app/onboardingbranddesignupdate/OnboardingBrandDesignUpdateToggles.kt
+++ b/app/src/main/java/com/duckduckgo/app/onboardingbranddesignupdate/OnboardingBrandDesignUpdateToggles.kt
@@ -58,6 +58,6 @@ interface OnboardingBrandDesignUpdateToggles {
     /**
      * Selects the config-driven renderer for the brand-design onboarding dialogs.
      */
-    @Toggle.DefaultValue(DefaultFeatureValue.FALSE)
+    @Toggle.DefaultValue(DefaultFeatureValue.TRUE)
     fun configDrivenDialogs(): Toggle
 }

base flow

• Clean install.
• Verify add to dock step:
  • Transitions to a card that has no arrow/Dax but doesn't sink to the middle/bottom of the screen, including on tablets.
  • Renders video correctly, also after rotation
• Verify add widget step:
  • Opens the system dialog on primary click.
  • Skips on secondary click.

skip flow

• Clean install.
• Click "I've been here before".
• Verify quick setup step:
  • Toggle both switches (declining the system prompt reverts the switch),
  • Open the address bar and search options bottom sheets
  • Confirm configuration and verify it's applied.

---

Note

Medium Risk
User-facing onboarding changes that drive default browser, widgets, and omnibar/search preferences, with substantial new interaction logic; coverage is strong in view model and resolver tests.

Overview
Ports add to dock, widget prompt, and quick setup into the config-driven onboarding renderer instead of auto-skipping or stubbing those steps.

Add to dock and widget prompt get new ContentConfig types, resolver entries, and binders (dock includes looping tutorial video on a TextureView). Quick setup is a stateful screen: toggles for default browser and widget, rows for address bar position and search/AI options, with state held in the view model and synced from the OS on resume.

The view model wires quick-setup interactions to commands (system default-browser prompt vs settings, add-widget prompt vs remove-widget instructions, existing quick-setup bottom sheets) and updates QuickSetupContentState before side effects so declined dialogs can revert switches without StateFlow deduping blocking the binder. Quick-setup default-browser results update install store state but do not advance the plan or fire the standalone default-browser onboarding pixels.

The welcome fragment handles the new commands, a separate activity result for quick-setup default browser, bottom-sheet result listeners, and syncQuickSetupSwitches when default app settings cannot be opened.

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