feat: add timestamp to context header

Display current date/time in context header for both terminal (Color)
and markdown formatters. Shows format like "2026-01-04 2:46am EST".

Also bumps version to 8.5.9.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Alex Newman
2026-01-04 02:49:28 -05:00
parent 9399374560
commit 91446c69e5
9 changed files with 133 additions and 103 deletions
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