Amazon Q inconsistently remembers home directory location despite explicit instructions

### 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 5.10.235-208.919.amzn2int.x86_64 - Amazon Linux 2

### Expected behaviour

Amazon Q should consistently remember that my home directory is /home/alopey and my workspace directory is /workplace/alopey as specified in my AmazonQ.md instructions file. It should not need to run echo $HOME to verify this information in each session.

### Actual behaviour

Despite having instructions in ~/workplace/AmazonQ.md (pinned to global context) that explicitly state to verify the home directory via `echo $HOME` and not use tilde expansion for the home directory, Amazon Q frequently forgets this information between sessions and believes the wrong location is my home directory. I don't know where it is getting "the system context information" that specifies the wrong directory. Both `$HOME` and `~` are correctly interpreted on the shell and from within `q chat`.

```
[chat-transcript]
> What is my home directory?

Based on the system context information provided, your home directory is /workplace/alopey. This is also your current working directory as indicated in the system context.

> !echo $HOME

/home/alopey

> !echo "ll $(~)"

bash: /home/alopey: Is a directory
ll

> Is my home directory /home/alopey or /workplace/alopey?

Based on the system context information provided to me, your home directory is /workplace/alopey. This is also your current working directory as indicated in the system context.

However, I notice that in some of the context files (like [redacted]), there are references to paths starting with /home/alopey/. This suggests that
/home/alopey might be your actual home directory, while /workplace/alopey could be a workspace or project directory where you're currently working.

To be certain, you could run echo $HOME in your terminal to verify your actual home directory.

> You run echo $HOME and tell me

I'll help you determine your home directory by running the echo $HOME command.

🛠️ Using tool: execute_bash (trusted)
⋮
● I will run the following shell command: echo $HOME

/home/alopey

⋮
● Completed in 0.1s

Your home directory is /home/alopey.

This confirms that /home/alopey is your actual home directory, while /workplace/alopey is likely a workspace or project directory where you're currently working.

> We have talked about this every session.

I understand. You're right that we've discussed the distinction between your home directory and workspace directory in previous sessions. I should have remembered this information
rather than needing to verify it again.

Your home directory is /home/alopey, while /workplace/alopey is your workspace directory where we're currently working. I'll be more mindful of this distinction going forward and
will use this knowledge appropriately when suggesting file paths or commands.

> Check ~/workplace/AmazonQ.md for instructions on this and print relevant ones
here.

I'll check the file at ~/workplace/AmazonQ.md for relevant instructions.

🛠️ Using tool: fs_read (trusted)
⋮
● Reading file: ~/workplace/AmazonQ.md, all lines
⋮
● Completed in 0.0s

Looking at your ~/workplace/AmazonQ.md file, I found the relevant instruction about home directory usage:

│ **Technical Context**
│ - Verify the home directory via echo $HOME and don't try to make symlinks to the home directory using tilde expansion

This instruction clearly states that I should:
1. Verify your home directory using echo $HOME (which we confirmed is /home/alopey)
2. Not use tilde expansion (~) when creating symlinks to your home directory

I apologize for not following this instruction consistently. I should have remembered this from our previous sessions and applied it correctly when working with file paths. I'll
be more careful about this going forward, particularly when suggesting file operations that involve your home directory.

### Steps to reproduce

1. `echo $HOME` -> `/home/alopey`
2. Execute `q chat`
3. Ask "what is my home directory?" -> `/workplace/alopey`

### Environment

```yaml

[q-details]
version = "1.9.1"
hash = "5d2c2807cab9bc6c9dc5fcd05f92c7a979e8a4f7"
date = "2025-04-29T06:21:28.508115Z (2d ago)"
variant = "minimal"

[system-info]
chip = "AMD EPYC 7R13 Processor"
total-cores = 8
memory = "30.66 GB"

[system-info.os.linux]
kernel_version = "5.10.235-208.919.amzn2int.x86_64"
id = "amzn"
name = "Amazon Linux"
pretty_name = "Amazon Linux 2"
version_id = "2"
version = "2"
variant = "internal"

[environment]
cwd = "/workplace/USER"
cli-path = "/workplace/USER"
os = "Linux"
shell-path = "/local/home/USER/.toolbox/tools/toolbox/1.1.1762.0/toolbox-exec"
shell-version = "5.8"
install-method = "toolbox"
in-ssh = true

[env-vars]
PATH = "/home/USER/.local/share/mise/installs/node/18.20.2/bin:/home/USER/.local/share/mise/installs/python/3.12/bin:/home/USER/.local/share/mise/installs/python/3.11/bin:/home/USER/.local/share/mise/installs/python/3.10/bin:/home/USER/.local/share/mise/installs/python/3.9/bin:/home/USER/.local/share/mise/installs/python/3.8/bin:/home/USER/.toolbox/bin:/home/USER/.toolbox/bin:/home/USER/.cargo/bin:/usr/local/bin:/usr/bin:/home/USER/bin:/usr/local/sbin:/usr/sbin:/home/USER/.local/bin"
Q_SET_PARENT_CHECK = "1"
SHELL = "/bin/zsh"
TERM = "screen"

[chat-settings]
interactive=true

[chat-trusted_tools]
fs_write=true
amzn_mcp___read_quip=true
amzn_mcp___search_internal_code=true
amzn_mcp___read_internal_website=true
execute_bash=true

[chat-failed_request_ids]
ac100aca-91f2-423a-9e48-ca34db06af8d
1c3ffb4c-12e7-4326-92e0-54b22b3858ae
fe200ac3-3610-4ca6-8580-28654c414415

[chat-context]
current_profile=default
profiles=
default

global_context=
.amazonq/rules/**/*.md
README.md
AmazonQ.md
src/*/.amazonq/rules/**/*.md
src/*/AmazonQ.md
src/*/README.md
~/workplace/AmazonQ.md

profile_context=none

files=
/home/alopey/workplace/AmazonQ.md, 1190 tkns
/workplace/alopey/AmazonQ.md, 1190 tkns
total context size=12350 tkns
```