The "Paste" recovery button only dismisses the notice; it does not paste

## What happens

`RecoveryAction.pasteManually` is drawn as "Paste" on the floating button (`Sources/Uttrflow/Dock/DockView.swift:310`), the menu bar (`Sources/UttrflowUX/ErrorPresentation.swift:108`) and the main window (`Sources/UttrflowUX/MainPresentation.swift:174`). Clicking it runs:

```swift
// Sources/Uttrflow/AppDelegate.swift:1818-1820
case .pasteManually:
// Already on the clipboard, put there by the insertion floor before it reported failure.
Task { await pipeline?.acknowledge() }
```

which returns the pipeline to idle and removes the notice. Nothing is pasted. It is offered for `TextInsertionError.insertionRejected`, including the insertion stage timing out (`Sources/UttrflowPipeline/DictationPipeline.swift:713-716`), and for every `TransformationError`.

## Why it matters

A button labelled with a verb must do that verb. A user who clicks "Paste" sees the notice disappear, looks at their document, and finds nothing there. They may assume the words are lost, when the fix was to press ⌘V themselves.

## How to reproduce

Read the code above. At runtime, the timeout path is the easiest to reach: dictate into an application that is hung (for example a process stopped with `kill -STOP`).

## Acceptance criteria

One of:

- the button is renamed to what it does ("Got It" / "Dismiss") and the message keeps saying "press ⌘V"; or
- the action performs a paste into the frontmost app (through the same inserter the dictation used), and only then dismisses.

Whichever is chosen, the three title tables agree, and `Tests/UttrflowUXTests/ErrorPresentationTests.swift` pins the title.

Start with the RecoveryAction.pasteManually case in Sources/Uttrflow/AppDelegate.swift and compare the three titles in DockView.swift, ErrorPresentation.swift, and MainPresentation.swift. Review Tests/UttrflowUXTests/ErrorPresentationTests.swift, choose one acceptance path, and update the test so the labels and behavior consistently match; confirm the timeout and transformation recovery notices still dismiss correctly.

Written by the indexing model from the issue text.