SKILL.md-Sanierung: Checklisten, Kommandolisten, wiki-status-Hard-Rule, wiki-query-Filingpruefung (schliesst #70, #74, #75, #78)

Files changed:
- CHANGES.md
- VERSION
- instructions/CONTRACT.md
- instructions/wiki-ingest/SKILL.md
- instructions/wiki-lint/SKILL.md
- instructions/wiki-manage/SKILL.md
- instructions/wiki-query/SKILL.md
- instructions/wiki-status/SKILL.md

instructions/CONTRACT.md

@@ -217,6 +217,29 @@ reads, and no tool hook is wired on the primary harness at all - so a `head -100
 to score. The other half of the claim, what ended up in the context window, produces no event
 anywhere by construction. Gitea #72 records what a test would cost and why it was not bought.
 
+### When a skill carries a copy-in checklist
+
+Anthropic's skill-authoring guidance suggests, for a "particularly complex workflow", a checklist
+the agent copies into its response and ticks off as it goes. It names no threshold, so this repo
+sets one - otherwise the two skills that have such a block and the three that do not read as an
+accident rather than a decision.
+
+A `SKILL.md` carries the block when **one** of its flows runs to eight steps or more *and* that
+flow contains steps whose omission is silent - a judgment call, a field filled by hand, a
+cadence check, anything no tool error and no validator would report missing. Both halves are
+required. Length alone is not the problem: a long flow of tool calls announces its own gaps,
+because the next call fails without the previous one.
+
+Two skills qualify today, and the block names each of their numbered steps once, verbatim:
+`wiki-ingest` (twelve steps, of which `## Not Extracted` in step 6, the coverage check in step 10
+and the lint cadence in step 12 all fail quietly) and `wiki-lint` (nine, with steps 3-6 pure
+judgment). The other three do not, and the reason is worth stating so nobody adds one out of
+symmetry: `wiki-manage` has two flows of seven, `wiki-query` six, `wiki-status` five, and none of
+them is long enough for a reader to lose the thread.
+
+The block says that it is to be copied and carried, not read. A checklist read once is the table
+of contents it replaced.
+
 ### How much reasoning a step may carry
 
 "Cut the reasoning" and "keep enough to decide an edge case" are one sentence pulling two ways,