Add unit tests for sampling and text utilities

[jaisinha77777]

Adds unit test coverage for two previously untested helper modules:

• concordia/utils/sampling.py — extract_choice_response (single-char, trailing paren/period, parenthesized-in-string, and no-match cases) and dynamically_adjust_temperature (below / at / above the attempt midpoint).
• concordia/utils/text.py — wrap (width handling, newline preservation, empty input) and truncate (max_length, delimiters, and combined).

All 31 tests pass locally via python -m pytest concordia/utils/sampling_test.py concordia/utils/text_test.py.

[google-cla]

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[jaisinha77777]

@googlebot I signed it!

[jaisinha77777]

@googlebot I signed it!

[jaisinha77777]

@googlebot I signed it!

[jaisinha77777]

Hi maintainers,

All CI checks, CLA verification, and tests are passing successfully. This PR adds unit test coverage for previously untested utility functions .

I would appreciate any feedback or review when convenient. Thanks for your time!

[jaisinha77777]

Hi @vezhnick, gentle ping on this one — it's been about a month with no review yet.

It's a small, low-risk addition: unit tests only (31 tests for utils/sampling.py and utils/text.py, both previously untested), no changes to library code. CLA is signed, all checks are green, and the branch still merges cleanly against current main.

No rush if the queue is backed up — just wanted to make sure it hadn't slipped through. Happy to rebase or adjust anything if needed.

[vezhnick]

LGTM