Color-code the prompt so the session state reads at a glance, using the
trace formatter's palette so prompt and trace look like one UI:
[ raw / hf / NTAG213 / 0x ]
dim ^bold ^cyan ^bold-green ^yellow(hex) | magenta(binary) dim
- bold `raw`; cyan RF field; bold-green identified transponder; entry
mode yellow for hex, magenta for binary (so the base is obvious and
flips color on Ctrl-/); dim brackets/separators.
- session.colored_breadcrumb() returns the ANSI form; breadcrumb() stays
plain (stripping the ANSI yields it — asserted). Prompt message renders
it via ANSI().
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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