Update NEWS.md to continuous log + add concise style rules to CLAUDE.md

NEWS.md is now a single continuous log under one heading per dev series,
not a new section per version bump. CLAUDE.md documents: only replace
line 1 (heading), append new entries, keep them extremely concise with
no trailing full stop.

Merged 9035 and 9036 entries into one section; condensed verbose 9036
bullets; added CI workflow change entry.

https://claude.ai/code/session_01XHWLohiSTdZvCutwD7ag2b

CLAUDE.md

@@ -166,7 +166,12 @@ echo "$currentversion"
 The `+ 1` accounts for the fact that this PR's squash commit is not yet on the default branch. Set **both** of these files to the resulting version string (and only once per PR, even across multiple commits):
 
 1. **`DESCRIPTION`** — the `Version:` field
-2. **`NEWS.md`** — the top-level heading `# AMR <version>`
+2. **`NEWS.md`** — **only replace line 1** (the `# AMR <version>` heading) with the new version number; do **not** create a new section. `NEWS.md` is a **continuous log** for the entire current `x.y.z.9nnn` development series: all changes since the last stable release accumulate under that single heading. After updating line 1, append the new change as a bullet under the appropriate sub-heading (`### New`, `### Fixes`, or `### Updates`).
+
+   Style rules for `NEWS.md` entries:
+   - Be **extremely concise** — one short line per item
+   - Do **not** end with a full stop (period)
+   - No verbose explanations; just the essential fact
 
 If `git describe` fails (e.g. no tags exist in the environment), fall back to reading the current version from `DESCRIPTION` and adding 1 to the last numeric component — but only if no bump has already been made in this PR.