[FEATURE] [iOS] Add a copy button below assistant responses

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

The Claude Code iOS app has no quick way to copy an assistant response. Unlike the standard Claude app and the Claude Code Mac app — both of which show a copy icon below each response — iOS requires manual text selection, which is fiddly and error-prone on mobile. This makes it hard to grab responses (commands, code snippets, explanations) to paste elsewhere.

Proposed Solution

Add a copy icon below each assistant response, consistent with the existing affordance in the standard Claude app and the Claude Code Mac app (same placement and iconography for cross-surface consistency).

• One tap copies the full response to the clipboard as markdown (matching the Mac app), with a brief "Copied" confirmation (toast or haptic).
• Keep any existing per-code-block copy buttons so users can grab either a single snippet or the whole message.

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

Other

Use Case Example

_No response_

Additional Context

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