fix(docs): AGENTS.md-Contract-Prosa als Sitzungsarbeit klargestellt, doc-pull-through-Instruction (schliesst #90)

Files changed:
- AGENTS.md
- CHANGES.md
- VERSION
- instructions/dev/doc-pull-through.md
- instructions/dev/stack-close/SKILL.md
- instructions/dev/stack-dev/SKILL.md
- instructions/dev/testing-conventions.md
- instructions/dev/version-parts.md
- tools/chemenu/commands/docs_verify.py

tools/chemenu/commands/docs_verify.py

@@ -213,8 +213,15 @@ def documented_commands(readme_text: str) -> list[str]:
 
 
 def check_cli_readme() -> list[str]:
-    """Every registered command must appear in tools/CONTRACT.md's command
-    table, and every command documented there must exist.
+    """Every registered command must appear in tools/CONTRACT.md, and every
+    command documented there must exist.
+
+    `TABLE_CELL_RE` scans the whole file for any markdown table row whose
+    first cell is backticked - there is no separate "command table" region it
+    is scoped to, so a match in the error-contract table (or any other table
+    shaped the same way) counts too. It reads only the backticked path itself,
+    never the rest of the cell: a changed flag or a rewritten description in
+    an existing row is invisible to this check.
 
     The reverse check matches a documented cell against the full registered
     command path (e.g. `xref add`, `migrate verify`), not just its first