tools: command records, Provenance group - examples, exit lines per cause (#142)

Files changed:
- CHANGES.md
- VERSION
- tools/CONTRACT.md
- tools/chemenu/commands/provenance_cmd.py

CHANGES.md

@@ -59,7 +59,7 @@ concern - readable here, never shipped as something to parse.
 
 ---
 
-## 7.1.0-beta.12 - 2026-09-26 - Command records, Finding and checking group: one line per cause, examples, prohibitions
+## 7.1.0-beta.13 - 2026-09-26 - Command records, Provenance group: examples, exit lines per cause
 
 **Author:** Torben Nehmer
 
@@ -81,6 +81,7 @@ concern - readable here, never shipped as something to parse.
 - Command records, Pages group: one line per cause, examples, prohibitions
 - Command records, Links and citations group: one line per cause, examples, prohibitions
 - Command records, Finding and checking group: one line per cause, examples, prohibitions
+- Command records, Provenance group: examples, exit lines per cause
 <!-- /wikitool:bumps -->
 
 ### CalDAV task-tracker provider (Nextcloud Tasks, iOS Reminders); review reports unknown-value findings instead of skipping them
@@ -261,6 +262,13 @@ the scope rule that justifies it. One claim is deliberately left as it stood: `l
 still describes the quote limit in blockquoted lines while the code counts quotes - which of
 the two is meant is not this change's call to make.
 
+### Command records, Provenance group: examples, exit lines per cause
+
+`sources coverage`, `sources trace` and `sources rebuild-index` rewritten the same way; text
+only. `sources trace` separates an argument error from the uncovered-file finding it also exits
+1 on, since the second is a result to act on rather than an argument to fix;
+`sources rebuild-index` names `kb/provenance.md` as generated in NEVER.
+
 ---
 
 ## 7.0.0 - 2026-09-22 - Task-Tracker-Anbindung: Vorhaben als Seitenart, Verpflichtungsschicht, Weekly Review als Read-Time-Join