docs(plans): refactor-to-next merge plan and lead decision 66 (sage)

Jason's 2026-10-08 rulings via Mos (thread 1eba59e5). R10: next stays
the trunk; the plan pins refactor b8db39cf and next 2101c9b4, finds a
clean merge-tree, and names the CI gate, approval identity, frozen
next-lane publishing, root .mosaic/repo.json, 13 stale v1 PRs and the
hardcoded ledger branch as the work. Nothing merged.

R8: Path A on the new estate Vikunja meets slice 1 and replaces
decision 61's Path B. The runbook's Path A text names the estate
instance and the share-only isolation rule.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

docs/SESSIONS.md

@@ -510,3 +510,14 @@ are never rewritten or removed; corrections are new entries.
 - 2026-10-05 | rocko | row 37 review opening, lead decisions 62/63 | Opened review at rev 126; expected credential-free post failure recorded at rev 127; README documents cooperative proof escape and S6 isolation obligation; no commit.
 2026-10-05T21:49:40Z | Dewey (T3 Claude Code, thread 84fb346c) | row 40 S5 #1522, lead decision 63 | recorded LD63 routing of the gap list; verify against the S2 round 2 candidate files (manifest 61519059, broker aa5efbbf): 15 checks 0 failed, check 16 equal on 203 rows; check 16 pin waits for Sage's commit; nothing committed
 2026-10-05T22:16:03Z | Sage (T3 Claude Code, thread 1ef1e4f8) | S1 and S2 integration | S1 at 2d64c71e (row 36 done) and S2 at 38828a2c (row 37 done) after integration gates in git worktrees, all suites green with live cases; row 43 S2b brief and #1525
+
+- 2026-10-05 | rocko | S2b row43 / #1525 candidate | 48/48 Node24+26; two mutants killed; eight script suites green, task 26/2 under Docker-disabled live-case boundary; review opened rev136, expected token-free post failure rev137; no commit.
+2026-10-05T22:23:19Z | Dewey (T3 Claude Code, thread 84fb346c) | row 40 S5 #1522, check 16 pin | check 16 reads packages/bus from commit 38828a2c via git archive (broker aa5efbbf, store e69cb395, schema 179ffe35); verify 15 checks 0 failed 2 N/V, 203 rows equal; 6 stand-in mutants killed; nothing committed
+
+- 2026-10-05 | rocko | row43 S2b R2, lead decision64 | Shared consumption for all three paths; class-drift refusal; 55/55 Node24+26, six mutants; review opened rev142/request failed expected rev143; no commit.
+2026-10-05T22:56:12Z | Dewey (T3 Claude Code, thread 84fb346c) | row 40 S5 #1522, S2b repin | check 16 repinned to 4afab552 (broker 44c161c2), verify 15/0 failed/2 N/V, 203 rows equal; finding: S2b refuses an agent message citing its decision (decision-mismatch), reproduced on both commits; SLICE1-VIEWS section 10; reported to Sage; nothing committed
+2026-10-05T22:58:30Z | Dewey (T3 Claude Code, thread 84fb346c) | row 40 S5 #1522, lead decision 65 | recorded LD65 (decision citation on within-role message.send, S2c row 44); fixture 101/102 kept; waiting for S2c to repin check 16 and update section 10; nothing committed
+
+- 2026-10-05 | rocko | row44 S2c / #1526 | Within-role citations preserved without consumption; README evidence wording fixed; 58/58 Node24+26, three mutants; eight suites pass, task26/2 Docker-disabled; review opened rev151, expected token-free post failure rev152; no commit.
+2026-10-05T23:18:04Z | Dewey (T3 Claude Code, thread 84fb346c) | row 40 S5 #1522, S2c repin | check 16 repinned to d27042fa (broker 51e03b33), verify 15/0 failed/2 N/V, 203 rows equal; probe confirms LD65 on d27042fa (citation stored, not consumed); fixture adds message.send action.allowed for 101/102; SLICE1-VIEWS.md section 10 says S2c restores them; no commit.
+2026-10-08T21:53:57Z | Sage (T3 Claude Code, thread 1ef1e4f8) | Mos 1eba59e5, Jason R1/R5/R8/R10/R17 | merge plan docs/plans/2026-10-08_refactor-to-next-merge-plan.md (pinned b8db39cf/2101c9b4, merge-tree clean); lead decision 66 (next trunk, estate Vikunja Path A replaces LD61 Path B, R1 defaults); runbook Path A text; nothing merged