v2.6.1

Changed

• write_lens_words names the docs pages to write only when its words are for the latest AI session's range, the
  range those pages come from. Words for another range answer as before, with no docs step.
• An area id the map never held, such as a typo, reads "not an area of the map", where it read "no longer in the
  map". A page that left the map still reads as before, with its words.
• write_docs checks each page against the app's rules for words before it sends: a summary of 1 to 200
  characters once trimmed, a body of at most 400 words, pieces with text that link a symbol or an area, not both. A
  page past them is left out with why, and the other pages are kept. One such page used to get the whole batch refused
  by the app.
• get_map's description says what its docs holds: each page's summary, and behind, the changes to the area
  since the words (mapAsOf's behind counts snapshots). get_code_context's stays as it was: every session reads
  it before its first edit, and with a docs sentence there the docs step was followed less often.
• Counts of one read in the singular in every tool's text: "1 file", "1 dependent", "1 step", "…and 1 more area".
• The docs step names the Overview as the whole project's page, not as an area the session changed.