Add "Ask Duck.ai" action when selecting text

[joshliebe]

Task/Issue URL: https://app.asana.com/1/137249556945/project/1200204095367872/task/1218242278110771?focus=true
Tech Design URL (if applicable): https://app.asana.com/1/137249556945/project/1200204095367872/task/1218282058361623
API Proposals URL(s) (if applicable): https://app.asana.com/1/137249556945/project/1200204095367872/task/1218270501055399
https://app.asana.com/1/137249556945/project/1200204095367872/task/1218282058361632

Description

• Adds an "Ask Duck.ai" action to the text selection menu in order to allow the user to attach the selected text to Duck.ai before prompting.
• The action is available when selecting text in DuckDuckGo and external apps that handle PROCESS_TEXT.

Steps to test this PR

From DDG

• Open a site e.g. example.com
• Select some text and long press
• Verify that the "Ask Duck.ai" is visible in the text selection toolbar
• Tap "Ask Duck.ai"
• Verify that contextual is opened with the selection attached
• Verify that the correct number words are counted followed by the beginning of the text
• Submit a prompt
• Verify that the selection is submitted to Duck.ai

Summarize

• Open a site in new tab e.g. example.com
• Select some text and long press
• Select "Summarize this selection"
• Verify that the selection is submitted to Duck.ai and summarized

Translation

• Change the phone language to another language (e.g. Spanish)
• Open a site in a new tab e.g. example.com
• Select some text and long press
• Select "Translate this selection"
• Verify that the selection is translated

Multiple selections

• Add multiple selections
• Verify that suggestions are hidden for more than one attachment
• Verify that a message is shown if you try to exceed 5 selections
• Submit a prompt
• Verify that all the selections are submitted

Duck.ai

• Long press some text in Duck.ai
• Verify that "Ask Duck.ai" is not available

From External (Firefox, Opera)

• Open a site e.g. example.com
• Select some text and long press
• Verify that the "Ask Duck.ai" is visible in the overflow menu
• Tap "Ask Duck.ai"
• Verify that full screen Duck.ai is opened with the selection attached
• Submit a prompt
• Verify that the selection is submitted

Disabled

• Disable "duckAiTextSelectionAction" in FF inventory
• Restart the app
• Long press some text
• Verify that the action is not available
• Go to Firefox, Opera
• Long press some text
• Verify that the action is not available in the overflow

UI changes

DuckDuckGo

Before	After

Firefox

Before	After

Attached

Contextual	Fullscreen

---

Note

Medium Risk
Touches browser launch intents, WebView action mode, and Duck.ai prompt payloads; gated behind remote feature flags but spans app and duckchat modules.

Overview
Adds "Ask Duck.ai" to the system text-selection flow so users can send highlighted text into Duck.ai from the browser and other apps via PROCESS_TEXT.

In-app WebView: DuckDuckGoWebView wraps the selection action mode so Ask Duck.ai appears as a primary action (hidden on Duck.ai pages). A feature-flagged SelectedTextDuckAiActivity and TextSelectionToggler register or disable that handler.

Navigation: BrowserNav.openDuckChat and BrowserActivity intents now carry contextual vs full-tab Duck.ai plus optional text selection; contextual opens call launchContextualDuckAi, otherwise selections are stashed and passed into native Duck.ai input when the tab loads.

Composer & chat: Per-tab TextSelectionRepository (cap of 5) backs attachment chips in native input; submissions include a selections JSON array on submitAIChatNativePrompt. Contextual entry skips auto page-context when selections are present, shows selection-specific quick prompts, and hands selections through to the contextual sheet/webview.

^{Reviewed by Cursor Bugbot for commit 99f7022. Bugbot is set up for automated code reviews on this repo. Configure here.}

[joshliebe]

• Add "Ask Duck.ai" action when selecting text #9740 : 2 dependent PRs (#9763 , #9766 ) 👈 (View in Graphite)
• develop

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

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