docs: stack-close no longer records which model and effort ran each phase (#170)

Files changed:
- CHANGES.md
- VERSION
- docs/model-and-effort-selection.md
- instructions/dev/stack-close/SKILL.md
- instructions/dev/stack-mode.md

CHANGES.md

@@ -59,7 +59,7 @@ concern - readable here, never shipped as something to parse.
 
 ---
 
-## 8.0.0-beta.28 - 2026-10-03 - raw fetch --html record and kb/CONTRACT.md path budget follow the folder accept
+## 8.0.0-beta.29 - 2026-10-03 - stack-close no longer records which model and effort ran each phase
 
 **Author:** Torben Nehmer
 
@@ -139,8 +139,18 @@ concern - readable here, never shipped as something to parse.
 - preflight.ps1: the asset-mode error helper is Exit-Asset, so PSScriptAnalyzer passes
 - kb/CONTRACT.md: an external article's raw_files point under raw/, a raw fetch capture names both files
 - raw fetch --html record and kb/CONTRACT.md path budget follow the folder accept
+- stack-close no longer records which model and effort ran each phase
 <!-- /wikitool:bumps -->
 
+### stack-close no longer records which model and effort ran each phase
+
+`stack-close`'s closing comment no longer carries a per-phase table of model, effort, session
+shape and compaction, nor the `size/` label beside it; the comment is the changelog line, then
+the issue closes. The operator decided the models used need not be documented (Gitea #170), so
+the record is dropped without a replacement, together with the sentences that leaned on it: `stack-mode.md` § Sessions
+and models, and two in `docs/model-and-effort-selection.md`. Which model suits which phase is
+unchanged. Dev-only apart from one `docs/` sentence; no behaviour change.
+
 ### raw fetch --html record and kb/CONTRACT.md path budget follow the folder accept
 
 Two sentences the previous change left behind, found in its closing check. `raw fetch --html`'s