headless ant/term ↗

docs: update ROADMAP for today's fixes and two stale entries Corrected the terminfo entry's now-false claim that bce isn't implemented (it has been since an unrelated later commit that had no reason to revisit this file) and folded in what that caused plus the cr/bel/rep/tbc audit findings as a "Since then" continuation, matching this file's existing pattern for amending completed entries rather than leaving the original claim to contradict reality. Also documented, in the same style, on their existing entries: REPLY_BUF_MAX (64-byte reply buffer truncation), the bare-LF column reset fix, and XTGETTCAP replies -- all real fixes from this session that had no roadmap trace, plus the new PTY_DEBUG_LOG_BUILD tooling flag under Test infrastructure. Found two items unrelated to today's work already stale: the whole-grid-to-[]string snapshot helper (Testing improvements) has existed since an earlier commit (grid_to_lines) but was still listed as not-yet-done -- marked [x]. Left the CSI-param boundary-value table item alone: real per-boundary test coverage exists, but not as the literal table-driven structure that item specifically asks for.