release(v4.9.9): the side that verifies a completed pins post-discovered session ids; agy never takes another workspace's conversation (Issue #40) - archive the review reports, bump the lockstep version

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VCgu9Fa9iT7TbJUSzdq4Ff

.agents/reports/planner-reviewer-codex-01/report-75b29d78.identity.json

@@ -0,0 +1,14 @@
+{
+  "loop_id": "loop-20261020T133532Z-a1684a",
+  "base_sha": "ff8b381520ae04e80c73a9e18bfad73d47e853c9",
+  "head_sha": "feccfd5e0356c8acf0438bc68bce7ea36ce2588e",
+  "tree_sha": "0f0f33cc22f5e492a0ddfccb6bac5be888c10d1a",
+  "review_commit": "feccfd5e0356c8acf0438bc68bce7ea36ce2588e",
+  "reviewer": "planner-reviewer-codex-01",
+  "job_id": "75b29d78",
+  "verdict": "PASS",
+  "transport": "herdr",
+  "evidence": "review-tree",
+  "isolation": "worktree",
+  "verified_at": "2026-10-20T15:51:16Z"
+}