Close out RISK-WP-0001: task notes, README, repo classification

T01, T02, T04-T08 done. T03 stays in progress: the escalation rule is
written and proposed, and it is not adopted until the custodian rules on
it — an unadopted rule is worse than an unwritten one because it looks
like coverage.

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

.repo-classification.yaml

@@ -0,0 +1,19 @@
+repo_classification:
+  standard: Repo Classification Standard
+  version: "1.0"
+  classified_at: "2026-08-19"
+  classified_by: agent
+  category: project
+  domain: infotech
+  secondary_domains:
+    - government
+  capability_tags:
+    - governance
+    - security
+    - knowledge
+  business_stake:
+    - technology
+    - operations
+  business_mechanics:
+    - coordination
+    - operation