write the step debugging guide page

[carlos-granados]

Replaces the step debugging placeholder with the full guide page.

Covers the four continuation actions (step into, step over, step out, run), run to cursor and the temporary breakpoint behind it, optional return value stepping, and the difference between stop and detach.

Verified against handler_dbgp.c:

• run to cursor is not a protocol command — editors implement it as a temporary breakpoint plus run, which is why the target line still has to be executable and why an earlier breakpoint stops you first
• return value stepping is the breakpoint_include_return_value DBGp feature, negotiated at session start, so it is an editor setting rather than an ini one
• stop bails out of the request, so shutdown functions and destructors do not run; detach lets the script finish on its own

[github-actions]

PR Preview Action v1.8.1
Preview removed because the pull request was closed.
2026-09-05 06:42 UTC