Prototype Sapho first after completed movement turns

Allow a physical Sapho holder to go first among remaining unstarted combined
shipment/movement turns after earlier players have fully finished. Preserve
completed resources, cards, counters and physical order. Keep Advanced Guild
priority guarded until Guild leaves the remaining queue. Reuse private controls,
all four AI profiles and the existing action/CAS continuation.

Add four engine regressions and one independently authored SQLite recovery race;
upgrade the existing Sapho Advanced engine fixture to genuine Advanced setup.
Update player guidance and the rules decision register. Record the fourteen
Leader Skill cards and lifecycle as sourced future work, with unresolved edges.
No mode or publication gates are opened.

Validation: check (types, lint, 4,369 offline tests) and build passed. All 35 focused
Sapho tests passed; independent engine/persistence review found no blocker.
One initial focused Advanced test omitted the existing Guild shipment approval;
it was corrected to resolve that real decision before ending the turn.
No HTTP/auth/schema change; the HTTP suite was not repeated for this checkpoint.

Following the reported power outage, the existing localhost server was healthy,
SQLite integrity/foreign-key checks passed, and the saved QA seat restored the
same private hand, forces, resources and pending Storm decision after refresh.
All 291 opening room versions/state hashes and all application seat/recovery/
entry/handover records match the fresh backup. Cloudflare internal metadata
changed; application data did not. No restart or database reset was needed.

Source fingerprint: de0e0e52ef7b6888792a6e2ec5e8c4745da446ece843bf3092320e915d621266
Private report: /home/quintine/.local/share/dune/checkpoints/20260913-sapho-completed-boundary-checks/report.json
Private backup/comparison: /home/quintine/.local/share/dune/checkpoints/20260913-outage-sapho-before/
Check duration 146645 ms; build 6753 ms. Reported aggregate goal counter at this
milestone opening was 65037986 and before Git was 65524147 (486161 difference,
including outage recovery, parallel source research and coordination; not a
billing measurement or a savings claim).

docs/CURRENT_STATUS.md

@@ -4,6 +4,20 @@ Updated 13 September 2026. This is the short navigation dashboard; detailed evid
 
 ## Evidence and source of truth
 
+- [Juice of Sapho](JUICE_OF_SAPHO_RUNTIME.md#13-september-first-at-a-later-clean-movement-boundary)
+  now connects first among remaining unstarted movement turns after earlier
+  turns finish, including after Advanced Guild completes its turn. Existing
+  private controls, all four AI profiles and saved continuation use the same
+  server option. Other Sapho timing questions remain pending. Independent
+  review and focused checks pass; broad results are in the checkpoint commit.
+- The [Leader Skills source contract](LEADER_SKILLS_RULES.md) records all fourteen
+  cards, setup/lifecycle and printed clarifications for the next prototype batch.
+  Runtime, controls and AI remain **Missing**; unresolved edge cases stay explicit.
+- Following the reported power outage, the existing server responded normally,
+  the database integrity check passed with 291 rooms, and all 218 rooms in the
+  preceding handover baseline were unchanged. The saved QA seat restored its
+  same private hand and pending Storm decision after refresh. A new private
+  backup protects all 291 rooms. No server restart or database reset was needed.
 - The current [Discovery prototype](DISCOVERY_PROTOTYPE.md) adds unambiguous
   Jacurutu battle income, sole-occupant Ecological Testing Station adjustment and
   Shrine card conversion. They connect engine effects, private controls, legal