docs(mandate): how a domain expert commissions a run — and one honesty fix the run itself exposed

`docs/bestille-en-kjoring.md` is the commissioning half of the expert-facing pair
(`ekspert-svar.md` is the judging half): the mandate file field by field, how to
run it, and — separated deliberately — what a commission does NOT do. It directs
what is evaluated, never what is approved.

Registered in _LIVE_DOCS, so it cannot silently fall behind the code.

The example output in it is COPIED FROM A REAL RUN, not composed, and running
that run is what found the defect fixed here: three approaches against the same
cost line each validated at 30000 NOK, and the settlement printed
"Validated total: 90000 NOK". Commissioned approaches are ALTERNATIVES — they
usually attack the same line — so summing them reports money the project cannot
realise. A domain expert reading that total would reasonably believe the run
found 90k.

The settlement now reports how many approaches held and which one the run
carries: a selection, not an arithmetic claim. That also removes the last money
addition from this module, which is the right place for it not to be.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ULCqjLF61rehj5cZmdUoR3

tests/test_doc_constant_sync_loadbearing.py

@@ -50,6 +50,7 @@ _LIVE_DOCS = (
     "README.md",
     "docs/extending.md",
     "docs/ekspert-svar.md",
+    "docs/bestille-en-kjoring.md",
     "docs/knowledge-base-recipe.md",
 )