Add organization name display to CLI intro screen

[continue]

Summary

This PR adds the organization name display to the Continue CLI intro screen, showing it above the Agent and Model information.

Changes

• Added organizationName prop to IntroMessage component
• Display Org: [ORG_NAME] above Agent: [AGENT_NAME] when an organization is selected
• Created useOrganizationName hook in TUIChat.tsx to fetch organization name from the auth service
• Updated StaticChatContent to pass organization name to IntroMessage
• Added tests for organization name display

Example

When a user is authenticated and has an organization selected, the intro screen will now display:

[ASCII Art]

Org: Acme Corp
Agent: My Agent
Model: gpt-4

[rest of intro content]

Testing

• Added unit tests for organization display in IntroMessage.test.tsx
• Organization name is only displayed when available (not shown for unauthenticated users or personal accounts)

---

This agent session was created by ty and co-authored by Continue [email protected].

---

Summary by cubic

Adds the selected organization name to the CLI intro screen, shown above the agent and model, so users can see their org context at startup.

• New Features
  • IntroMessage accepts organizationName and renders “Org: [name]” above Agent.
  • TUIChat resolves auth organizationId to a name via a new useOrganizationName hook (listUserOrganizations) and passes it through StaticChatContent.
  • Organization line renders only when available; tests cover presence/absence.

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[RomneyDa]

@sestinj could you add screenshots?