feat: auto-detect Console width (#3327)

# What does this PR do?
<!-- Provide a short summary of what this PR does and why. Link to
relevant issues if applicable. -->
Addresses Issue #3271 - "Starting LLS server locally on a terminal with
120 chars width results in an output with empty lines".

This removes the specific 150-character width limit specified for the
Console, and will now auto-detect the terminal width instead. Now the
formatting of Console output is consistent across different sizes of
terminal windows.

<!-- If resolving an issue, uncomment and update the line below -->
<!-- Closes #[issue-number] -->
Closes #3271

## Test Plan
<!-- Describe the tests you ran to verify your changes with result
summaries. *Provide clear instructions so the plan can be easily
re-executed.* -->
Launching the server with several different sizes of terminal windows
results in Console output without unexpected spacing. e.g. `python -m
llama_stack.core.server.server /tmp/run.yaml --port 8321`

---------

Signed-off-by: Doug Edgar <dedgar@redhat.com>
Co-authored-by: Matthew Farrellee <matt@cs.wisc.edu>

.github/workflows/integration-auth-tests.yml

@@ -84,6 +84,8 @@ jobs:
           yq eval '.server.auth.provider_config.jwks.token = "${{ env.TOKEN }}"' -i $run_dir/run.yaml
           cat $run_dir/run.yaml
 
+          # avoid line breaks in the server log, especially because we grep it below.
+          export COLUMNS=1984
           nohup uv run llama stack run $run_dir/run.yaml --image-type venv > server.log 2>&1 &
 
       - name: Wait for Llama Stack server to be ready

llama_stack/log.py

@@ -128,7 +128,7 @@ def strip_rich_markup(text):
 
 class CustomRichHandler(RichHandler):
     def __init__(self, *args, **kwargs):
-        kwargs["console"] = Console(width=150)
+        kwargs["console"] = Console()
         super().__init__(*args, **kwargs)
 
     def emit(self, record):