diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..bf635c9
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,32 @@
+# Zeilenenden repo-weit normalisieren: git speichert LF, die Arbeitskopie darf
+# plattformueblich sein. Ohne diese Datei meldete git unter Windows den halben
+# Baum als geaendert - ein reiner CRLF/LF-Unterschied ohne Inhaltsaenderung.
+* text=auto
+
+# Dateien, die im Linux-Container ausgefuehrt werden, brauchen LF auch in der
+# Arbeitskopie: CRLF laesst bash mit "\r: command not found" scheitern.
+Dockerfile      text eol=lf
+*.sh            text eol=lf
+*.yml           text eol=lf
+*.yaml          text eol=lf
+
+# Windows-Skripte umgekehrt.
+*.bat           text eol=crlf
+*.ps1           text eol=crlf
+
+# Binaerdateien nie konvertieren. `text=auto` erkennt die meisten davon
+# ohnehin, die Liste macht es fuer die Geodatenformate explizit.
+*.png           binary
+*.jpg           binary
+*.ico           binary
+*.qm            binary
+*.zip           binary
+*.gpkg          binary
+*.shp           binary
+*.shx           binary
+*.dbf           binary
+*.qix           binary
+*.tif           binary
+
+# Nicht als binaer markieren: *.asc (ESRI-ASCII-Grid), *.prj, *.cpg und *.qml
+# sind Textformate und werden von `text=auto` korrekt behandelt.
diff --git a/ai/core/constraints.md b/ai/core/constraints.md
index d3f067a..2c378f7 100644
--- a/ai/core/constraints.md
+++ b/ai/core/constraints.md
@@ -13,10 +13,10 @@ see [release-conventions.md](release-conventions.md).
 > not follow that split - its docstrings, comments, and `log()` messages are
 > German throughout, while identifiers are English. This is the actual,
 > current convention here, not an oversight to silently "correct" by copying
-> IB-Tool 3's rule - see the Testplan-data_wizard-ibtoolpartion.md
-> "Nebenbefund #4" note, which flags the inconsistency across the three
-> plugins as a separate decision to make deliberately, not as part of adding
-> tests/docs. The table below documents what this repository actually does.
+> IB-Tool 3's rule. Whether the three plugins should converge on one language
+> split is a deliberate decision to take on its own, not a side effect of
+> adding tests or docs. The table below documents what this repository
+> actually does.
 
 | Content Type | Language | Examples |
 |---|---|---|