Jared Vititoe 7450d79f01 Replace echo -e with printf for portability ...

Converted all echo -e commands to printf for better portability
across different systems and shells. Printf is POSIX-compliant
and behaves consistently.

Updated functions:
- colorize_health(): Uses printf %b for escape sequences
- colorize_temp(): Uses printf %b for escape sequences
- colorize_header(): Uses printf with newline
- log_error(), log_warn(), log_info(): Uses printf for stderr

Also simplified header output by calling colorize_header directly
since it now handles its own newline.

Fixes: #19

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2026-02-05 11:45:56 -05:00

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