release(v4.7.2): bump framework and eight skills to 4.7.2 in lockstep; archive PR #35 merge-side reviews

Issues #23 and #24: cross-server herdr scope, agent-agnostic start-up
dialogs, onboarding delivery judged by the agent's own started event,
verified rollback. VERSIONS.md carries the entry; the merge-side reports
(round 1: claude/agy/grok; round 2 on 05b0ea4: all four, with identity
sidecars, base f4ba205 -> head 05b0ea4, evidence review-tree) are archived
under .agents/reports/<session>/. The round-1 codex report was lost to the
host sleeping mid-review; its two probes are recorded in the changelog.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VCgu9Fa9iT7TbJUSzdq4Ff

.agents/reports/reviewer-grok-01/report-8352b00e.identity.json

@@ -0,0 +1,14 @@
+{
+  "loop_id": "loop-20260923T220355Z-76dd1d",
+  "base_sha": "f4ba205c9f755d817e2206c7a9cb390a3e61fd2f",
+  "head_sha": "05b0ea4762de3fad013e8986d45db21c4e6aa465",
+  "tree_sha": "8f5e8b0402017d2cc809364e60400c4c25b922f3",
+  "review_commit": "05b0ea4762de3fad013e8986d45db21c4e6aa465",
+  "reviewer": "reviewer-grok-01",
+  "job_id": "8352b00e",
+  "verdict": "PASS",
+  "transport": "herdr",
+  "evidence": "review-tree",
+  "isolation": "worktree",
+  "verified_at": "2026-09-23T23:35:19Z"
+}