rename stop-blathering to grice-maxims

A civil name for the same skill; "stop blathering" stays a trigger
phrase in the description, which now leads with replies: they happen
every turn, so they never look like a task that calls for a skill.
The README gloss now covers all four maxims, not just brevity.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

README.md

@@ -36,7 +36,8 @@ Code](https://code.claude.com/docs/en/skills) and
 
 ## writing prose
 
-- [stop-blathering](stop-blathering/SKILL.md) — omit needless words.
+- [grice-maxims](grice-maxims/SKILL.md) — say what's needed and no
+  more, only what you can back up, in an order easy to follow.
 - [hypertext-links](hypertext-links/SKILL.md) — link text says where
   the link goes; no bare URLs, no "click here".
 - [citation-needed](citation-needed/SKILL.md) — back a challenged claim

grice-maxims/SKILL.md

@@ -1,7 +1,7 @@
 ---
-name: stop-blathering
+name: grice-maxims
 description: >-
-  Stop blathering; be concise, truthful, relevant, clear (Grice's maxims) — use when writing or copy editing prose for a reader (docs, READMEs, skills, commit messages, PR descriptions, replies); when someone says "tighter", "too wordy", "blathering", "omit needless words", or cites Strunk & White or Grice; when about to say something you lack adequate evidence for. Optimize for reader attention: say what's needed, nothing the reader already knows, in an order easy to follow.
+  Grice's maxims: be concise, truthful, relevant, clear — use before any reply, and when writing or copy editing prose for a reader (docs, READMEs, skills, commit messages, PR descriptions); when someone says "tighter", "too wordy", "stop blathering", "omit needless words", or cites Strunk & White or Grice; when about to say something you lack adequate evidence for. Optimize for reader attention: say what's needed, nothing the reader already knows, in an order easy to follow.
 ---
 
 # Be concise; optimize for reader attention