[AI Chat] [Content Agent] Tracking Issue

[petemill]

Tracking landing AI Chat's Content Agent feature in nightly

Integration branch that combines any open PR for builds:

• [INTEGRATION TESTING] AI Chat Content Agent Integration branch brave-core#31546

Content Agent Milestone 1

• Base Tool support

  • [AI Chat] Introduce ToolProvider and pass instances to ConversationHandler brave-core#30724
  • AI Chat tools conversation loop (agentic) brave-core#30074
  • AI Chat: Persist tool use event outputs brave-core#30184
  • AI Chat: store ToolUseEvent entry events in database brave-core#29771
  • AI Chat Tool definition and EngineConsumer inclusion brave-core#29644
  • AI Chat Tool Use Conversation Events brave-core#29643
  • AI Chat Tools ConversationAPI implementation brave-core#29627
  • [AI Chat] Automatic model supports tools brave-core#31679

• Agentic profile

  • [AI Chat] Global side panel for agent profile, or everywhere via feature flag brave-core#30720
  • AI Chat: Create a semi-built-in Profile for agentic features brave-core#30285

• Content Agent

  • Introduce ConversationCapability with types CHAT and CONTENT_AGENT brave-core#31223
  • Integrate AIChat with the Chromium ActorKeyedService brave-core#31224
  • [AI Chat] [Content Agent] TODO Tool brave-core#31538
  • [AI Chat][Content Agent] convert annotated page content to tool use output content blocks brave-core#31511
  • [AI Chat] [Content Agent] Introduce other content agent tools brave-core#30743
  • [AI Chat] [Content Agent] Assistant Detail Tool brave-core#31543
  • Alignment check parsing

• UI

  • [AI Chat] Tool Event UI simplification brave-core#31774
  • [AI Chat] [Content Agent] Make decision when to show a group of Assistant conversation entries as a Task brave-core#31793
  • [AI Chat] [Content Agent] Task UI brave-core#31542
  • [AI Chat] [Content Agent] Provide thumbnail of controlled tabs from the browser to the conversation brave-core#31544
  • [AI Chat] [Content Agent] Notices and warnings #49799
  • [AI Chat] [Content Agent] Warning for first use #50502
  • [AI Chat] [Content Agent] Agent mode NTP #50501

• Flag

  • [AI Chat][Content Agent] Default flag to enabled in Nightly only #49801

Content Agent Milestone 1.5

• AI Chat: content agent results should prioritize viewport results instead of truncation x characters from the beginning #49262
• (screenshots) AI Chat: Use MultiSourcePageContentFetcher for content agent actions #49259
• [AI Chat] [Content Agent] better text insertion tool #49981
• [AI Chat] [Content Agent] Actor task management #50447

Content Agent Milestone 2

• AI Chat: Content agent should be able to create and act on multiple tabs simultaneously within a conversation #49258
• [AI Chat] [Content Agent] Toolbar button and agentic conversation popup #49800