content: four concept pages tagged guideline; the template's guideline filter is a default, not a setup question (#179)

Files changed:
- CHANGES.md
- VERSION
- kb/CONVENTIONS.md
- kb/CONVENTIONS.md.template
- kb/concepts/decisions/Diff-Reviewable Agent Edits.md
- kb/concepts/decisions/Structural Enforcement over Documented Rule.md
- kb/concepts/problems/Ambient Environment Dependency.md
- kb/concepts/problems/Green Suite Blind Spot.md
- kb/log.md

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SnAJ7Z3CpVD3PRbN73QtU2

CHANGES.md

@@ -59,7 +59,7 @@ concern - readable here, never shipped as something to parse.
 
 ---
 
-## 8.0.0-beta.44 - 2026-10-06 - export guidelines: the guideline pages as a generated GUIDELINES.md, pushed into the captured repositories behind the Guideline Push Gate
+## 8.0.0-beta.45 - 2026-10-06 - kb/CONVENTIONS.md.template: the guideline filter is a default, not a setup question
 
 **Author:** Torben Nehmer
 
@@ -155,8 +155,19 @@ concern - readable here, never shipped as something to parse.
 - kb/CONTRACT.md names unwritten scaffold sections and the Unfilled Template Sections finding
 - wiki-ingest and wiki-manage call xref add with --rel, not the --rel-a/--rel-b removed in 4.0.0
 - raw accept: an occupied folder name held by a captured bundle points at --replaces-bundle
+- kb/CONVENTIONS.md.template: the guideline filter is a default, not a setup question
 <!-- /wikitool:bumps -->
 
+### kb/CONVENTIONS.md.template: the guideline filter is a default, not a setup question
+
+The § Guidelines for other repositories section shipped with a `{...}` placeholder, and
+`setup-instance.md` reads every placeholder in that template as a question to put to the user -
+so the export's filter had quietly become a new setup question, one a fresh instance with no
+pages cannot sensibly answer and `INSTALL.md` does not list. The section now states a default,
+`--tag guideline`, to be changed in place once the instance decides otherwise. This instance's
+own `kb/CONVENTIONS.md` points at `search --tag guideline` for the pages that carry the tag; four
+concept pages now do (Gitea #179).
+
 ### export guidelines: the guideline pages as a generated GUIDELINES.md, pushed into the captured repositories behind the Guideline Push Gate
 
 The other direction of `raw capture`. Project repositories each carried their own copy of the