Auto-suggestion feature disappeared again

### Checks

- [x] I have searched [github.com/aws/amazon-q-developer-cli/issues](https://github.com/aws/amazon-q-developer-cli/issues?q=) and there are no duplicates of my issue
- [x] I have run `q doctor` in the affected terminal session
- [x] I have run `q restart` and replicated the issue again

### Operating system

Linux 6.8.0-79-generic - Ubuntu 24.04.3 LTS

### Expected behaviour

Auto-suggestions should appear consistently when typing commands and parameters

### Actual behaviour

The auto-suggestion functionality in Q CLI has stopped working and is no longer appearing during command input

```
[chat-transcript]
> the auto sugesstion disappear again

I understand the auto-suggestion feature has stopped working again. This is a known issue that can happen with the Q CLI. Let me help you report this so the team can track and fix it.
[Tool uses: report_issue]
```

### Steps to reproduce

User was using Q CLI normally when auto-suggestions stopped appearing. This appears to be a recurring issue.

### Environment

```yaml

[q-details]
version = "1.14.1"
hash = "209dfbf9c7bd73473a6712f3351158323f28e173"
date = "2025-08-21T18:28:29.76428Z (13d ago)"

[system-info]
chip = "12th Gen Intel(R) Core(TM) i7-1255U"
total-cores = 10
memory = "30.99 GB"

[system-info.os.linux]
kernel_version = "6.8.0-79-generic"
id = "ubuntu"
name = "Ubuntu"
pretty_name = "Ubuntu 24.04.3 LTS"
version_id = "24.04"
version = "24.04.3 LTS (Noble Numbat)"

[environment]
cwd = "/home/USER"
cli-path = "/home/USER"
install-method = "unknown"

[env-vars]
DISPLAY = ":1"
GTK_IM_MODULE = "ibus"
PATH = "/home/USER/.nvm/versions/node/v22.17.1/bin:/home/USER/.pyenv/plugins/pyenv-virtualenv/shims:/home/USER/.pyenv/shims:/home/USER/.pyenv/bin:/home/USER/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/snap/bin:/home/USER/.local/bin"
QTERM_SESSION_ID = "2d398d7e3f334b129c0a7a2a9599a8ad"
QT_IM_MODULE = "ibus"
Q_SET_PARENT_CHECK = "1"
Q_TERM = "1.14.1"
SHELL = "/bin/zsh"
TERM = "xterm-256color"
XDG_CURRENT_DESKTOP = "ubuntu:GNOME"
XDG_SESSION_DESKTOP = "ubuntu"
XDG_SESSION_TYPE = "x11"
XMODIFIERS = "@im=ibus"

[chat-settings]

[chat-trusted_tools]
fs_read=trusted

[chat-failed_request_ids]
none

[chat-context]
current_profile=q_cli_default
profile_context=
AmazonQ.md
README.md
.amazonq/rules/**/*.md

files=none
```