Speech-to-Text Workflow: No Edit Mode for Long Transcriptions

### Expected behaviour

When pasting or inputting long text (500+ characters) into Kiro CLI, I should be able to:
- Preview the full text content before submission
- Edit the text if needed (fix transcription errors, add formatting)
- Have a keyboard shortcut to expand collapsed text
- Or get a confirmation prompt for large inputs

### Actual behaviour

When inputting long text into Kiro CLI (whether from speech-to-text transcription OR regular copy/paste):
1. Text gets automatically collapsed to show only character count (e.g., "500 characters")
2. No visible way to expand, preview, or edit the collapsed text
3. Text gets submitted as-is without review opportunity
4. Cannot fix speech-to-text transcription errors or edit pasted content before sending

**This behavior occurs with BOTH:**
- Speech-to-text transcription (OpenWhisper)
- Regular copy/paste operations

### Steps to reproduce

**Method 1: Speech-to-Text Workflow**
1. Use OpenWhisper (or any speech-to-text tool) to transcribe 1-2 minutes of speech
2. Paste transcribed text into Kiro CLI prompt
3. Observe text gets collapsed to character count
4. Try various key combinations (Ctrl+E, Escape+e, F2, etc.) - none work
5. Text submits without edit opportunity

**Method 2: Regular Paste Test**
1. Generate 500+ characters of lorem ipsum text
2. Copy to clipboard
3. Paste into Kiro CLI prompt
4. Same collapse behavior occurs
5. No way to expand or edit before submission

### Impact on Workflow
- **Speech-to-text users** cannot review/correct transcription errors
- **All users** cannot edit large pasted content before submission
- **Accessibility impact** for users relying on voice input
- **No quality control** for long inputs before submission
- **Productivity loss** from having to retype corrected content

### Related Issues
This appears to be part of broader input handling problems:
- #3110 - Bracketed paste mode issues
- #3444 - GNU readline request (mentions input handling problems)
- #1277 - `/editor` freezes with large text paste
- #2343 - Multi-line copy paste failures
- #2552 - Voice input feature request (Roadmap)

### Technical Context
- Behavior appears related to **bracketed paste mode** handling
- Character threshold seems to be around **500 characters**
- Issue affects both speech-to-text and regular paste operations
- No configuration option found to disable this behavior

### Suggested Solutions
1. **Preview mode** - Show full text with edit option before submission
2. **Keyboard shortcut** - Allow expanding collapsed text (e.g., Ctrl+E)
3. **External editor integration** - Open $EDITOR for long inputs
4. **Configuration option** - Allow disabling text collapse behavior
5. **Confirmation prompt** - Ask before submitting large inputs

### Environment

```yaml
[q-details]
version = "1.29.6"
hash = "384bd4c79b07c1a3c67025f3339afdb19ed4466a"
date = "2026-04-08T05:30:39.871823Z (2d ago)"
variant = "full"

[system-info]
os = "macOS 26.4.0 (25E246)"
chip = "Apple M1 Max"
total-cores = 10
memory = "32.00 GB"

[environment]
cwd = "/Users/USER/org"
cli-path = "/Users/USER/org"
os = "Mac"
shell-path = "/Applications/Kiro CLI.app/Contents/MacOS/kiro-cli-chat"
terminal = "iTerm 2"
install-method = "unknown"

[env-vars]
PATH = "/Users/USER/.nvm/versions/node/v24.5.0/bin:~/bin:/usr/local/bin:/Library/TeX/Distributions/Programs/texbin:/Users/USER/.rbenv/shims:/opt/local/bin:/opt/local/sbin:/opt/homebrew/bin:/opt/homebrew/sbin:/usr/local/sbin:/usr/local/git/bin:/Users/USER/.pyenv/shims:/Users/USER/.pyenv/bin:~/go/bin:/Users/USER/.basher/bin:~/bin:/Users/USER/.nix-profile/bin:/nix/var/nix/profiles/default/bin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/opt/pkg/env/active/bin:/opt/pmk/env/global/bin:/Library/TeX/texbin:/Applications/Wireshark.app/Contents/MacOS:/Library/TeX/Distributions/Programs/texbin:/opt/local/bin:/opt/local/sbin:/Cellar/gnupg@2.2.41/2.2.41/bin:/Users/USER/.basher/cellar/bin:/Applications/iTerm.app/Contents/Resources/utilities:/Users/USER/.local/bin:/Users/USER/.rvm/bin"
QTERM_SESSION_ID = "[REDACTED]"
Q_SET_PARENT_CHECK = "1"
Q_TERM = "1.29.5"
SHELL = "/opt/homebrew/bin/bash"
TERM = "tmux-256color"
__CFBundleIdentifier = "com.googlecode.iterm2"
```