feat: slice 5 - components declared, group checks live, mirror dry-run

Gate 4, slice 5: eight component declarations under docs/components/
(filename = canonical slug, F-008 answered by construction; staged
dormancy of thread-net-git/threadnet-operating finally representable,
game-operating/gameserver as external with their field-test caveats),
five pointer-rollout follow-up issues (0035-0039, ADR-0013),
gruppenpruefung.py joins the stillstandspruefung family (runtime group
list vs declarations, pointer presence, group-wide milestone/priority
duty, issue drift, git hygiene since the 2026-08-07 rule boundary,
bot exception per ADR-0009) with its own scheduled CI job, and
spiegel_issues.py mirrors repo to GitLab (title, state, milestone,
priority, due, status label only - never descriptions, never
backwards, dry-run by default, GitLab-only issues are reported and
never auto-closed).

Verified - all four pattern demos fire (acceptance criterion 5, 4/4):
A) old CLAUDE.md claims M1-M4 while the frozen export knows M5;
B) hygiene over full clone history finds 222 real-clock commits by
own identities (matches the frozen Session-1 numbers per repo);
C) covered in slices 3/4 (five task blocks, now 0);
D) covered in slice 3 (orphaned SHA citations, now resolved/curated).
Live run (read-only): exactly the four missing pointers (F-011) and
gitops#61 without milestone as red findings, zero drift on all 26
mirrored issues, group list consistent. Mirror dry-run plans 7
creations, 0 updates, wrote nothing. Offline chain green: validate
0/0, gen_status --check current, drift 0, prosa 0.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/issues/0037-rollout-agents-pointer-threadnet-call.md

@@ -0,0 +1,23 @@
+---
+type: issue
+id: "0037"
+status: open
+created: 2026-08-11
+milestone: M2
+priority: medium
+related:
+  - "docs/adr/0013-gruppenregeln-kanonisch-mit-pruefung.md"
+---
+
+# Rollout Gruppenregeln-Pointer: `threadnet-call`
+
+> Folge-Issue aus [ADR-0013](../adr/0013-gruppenregeln-kanonisch-mit-pruefung.md)
+> (Feldtest F-011: 4 von 5 Komponenten trugen keine Pointer-Datei).
+> `gitlab_iid` folgt mit dem ersten Spiegel-Lauf.
+
+In `threadnet-call` anlegen: `CLAUDE.md` als Ein-Zeilen-Pointer und ein
+`AGENTS.md` mit **nur** Projektspezifika plus Verweis auf die
+Gruppenregeln (management-Repo, git.lab + rohana-Mirror-URL). Bestehende
+projektspezifische CLAUDE.md-Inhalte (gitops) bleiben erhalten und
+rücken unter den Pointer. Danach meldet `gruppenpruefung.py` die
+Komponente grün.