fix: stale wiki/ path literals nach kb/ nachgezogen, mit Test-Guard gegen die naechste Umbenennung

Files changed:
- CHANGES.md
- VERSION
- kb/entities/projects/Chemenu.md
- kb/log.md
- tools/chemenu/commands/_util.py
- tools/chemenu/commands/cite_cmd.py
- tools/chemenu/commands/git_publish.py
- tools/chemenu/commands/log_append.py
- tools/chemenu/commands/page_ops.py
- tools/chemenu/commands/provenance_cmd.py
- tools/chemenu/commands/raw_cmd.py
- tools/chemenu/commands/run_budget.py
- tools/chemenu/commands/touch.py
- tools/chemenu/commands/xref.py
- tools/chemenu/frontmatter_io.py
- tools/chemenu/lint_core.py
- tools/chemenu/tests/test_log_append.py
- tools/chemenu/tests/test_source_hygiene.py
- tools/chemenu/tests/test_touch.py
- tools/chemenu/tests/test_type_resolver.py
- tools/chemenu/type_resolver.py
- tools/wikitool
- types/type-spec.md
- types/type-spec.schema.yaml

types/type-spec.md

@@ -178,7 +178,7 @@ genuinely that uniform. Once the default was removed and the pages reclassified
 actually were, the field split into six areas with none of them small. Declare `layout` for
 *every* enum value once it does: a value missing from it still gets a directory (`subtype_dir`
 falls back to naively pluralizing the value's own name), but that directory carries no title in
-`wiki/index.md`, which is a silent gap rather than a deliberate flat collection. Leaving a whole
+`kb/index.md`, which is a silent gap rather than a deliberate flat collection. Leaving a whole
 type's `layout` off is for the case in the paragraph above - no subtype field to key on at all
 - not for a subtype field one has simply not gotten around to mapping. A `dir:` must be a single
 path segment, because an area is as deep as a page goes.