Rename "Chat" to "Code" in interaction mode toggle

[heysonder]

What changed

Renamed the interaction mode toggle label from "Chat" to "Code" (the non-plan default mode). Updated the corresponding browser test assertions.

Why

T3 Code is a coding agent app, not a chatbot. The default mode label should reflect what the tool actually does — execute code, edit files, and run commands. "Chat" undersells the capability and is misleading.

Before / After

Before:

After:

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Note

Low Risk
Low risk UI copy/test update: only changes displayed labels/tooltips and corresponding browser test assertions, with no impact on interaction mode logic.

Overview
Updates the default (non-plan) interaction mode wording in ChatView from “Chat” to “Code”, including the toggle button label, tooltip text, and the /default slash-command description.

Adjusts ChatView.browser.tsx browser tests to look for the new “Code” label and updated tooltip copy when toggling plan mode via keyboard.

^{Reviewed by Cursor Bugbot for commit 37c0b1a. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Rename 'Chat' to 'Code' in the interaction mode toggle button

Updates the label in ChatView.tsx so the non-plan interaction mode button displays 'Code' instead of 'Chat', including screen-reader text. Associated browser tests in ChatView.browser.tsx are updated to match the new label.

^{Macroscope summarized c4e5aff.}

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[cursor]

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

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[macroscopeapp]

Approvability

Verdict: Approved

This PR contains only string literal renames changing 'Chat' to 'Code' in UI labels and their corresponding test expectations. No logic or behavior changes are involved.

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