docs: separate REWORK_PLAN (infra/milestones) from TODO (bugs)

REWORK_PLAN.md: backend rework plan only. M0-M3 done, M4 = dead-not-skipped
(the one feature request), M5 docker, M6 undo, M7 e2e. Removed bug-stuff
and hallucinated JUMP_TURN_TO. Server = generic KV doc store.

TODO.md: bugs only. BUG-1/2 resolved, BUG-4/5/6/7/8/9 confirmed. No
milestones, no features. Pipeline stripped to bugs.

M4 (dead-not-skipped) lives in REWORK_PLAN only.

TODO.md

@@ -1,33 +1,7 @@
 # TODO
 
-## Milestone M4 — Initiative rotation bugs + features
-
-Split: bug (rotation corruption) vs feature (dead-participant handling).
-
-### BUG-5: Initiative skip (mid-round add/revive corrupts rotation)
-- **Real bug.** Rotation corrupts when participant added/revived mid-round.
-- Test: `shared/tests/turn.combat.test.js` (jest, seeded, RED).
-- 13 dupes / 100 rounds. First at round 4 (Cleric twice).
-- Root cause: `computeTurnOrderAfterAddition` appends id to turnOrderIds
-  end. Round wrap re-sorts by initiative. `currentTurnParticipantId` pointer
-  stale → nextTurn revisits.
-- See full detail below in Confirmed bugs section.
-
-### FEAT-1: Dead participants should stay in turn order (as-designed→change)
-- **Feature request, not bug.** Current behavior is as-designed (dead =
-  inactive = skipped). User wants change: dead occupy initiative slot,
-  PCs get death-save turn.
-- Saw Saturday game.
-- Desired:
-  - dead PC not removed from turnOrderIds
-  - dead PC turn still comes up (nextTurn visits them)
-  - dead PC on their turn can deathSave
-  - dead PC not auto-set isActive=false by applyHpChange
-- Affects: `shared/turn.js` `nextTurn` (filters `isActive`), `applyHpChange`
-  (sets isActive=false on death), `computeTurnOrderAfterRemoval`.
-- Characterization tests (`src/tests/Combat.characterization.test.js`) lock
-  CURRENT behavior — UPDATE to desired when implementing.
-- RED test locked (desired state): `shared/tests/turn.dead-skip.test.js` (4 tests).
+Confirmed bugs found via testing. M4 (dead-not-skipped) lives in
+REWORK_PLAN.md — not here. This file = bugs only.
 
 ## Confirmed bugs (tests written, NOT fixed)
 
@@ -114,12 +88,8 @@ Split: bug (rotation corruption) vs feature (dead-participant handling).
 - Display frozen until full reload.
 - Fix: `onclose` → reconnect + re-subscribe existing paths.
 
-## Pipeline
+## Pipeline (bugs only — milestones live in REWORK_PLAN.md)
 - [ ] BUG-4: fix setDoc→updateDoc for all 5 activeDisplay sites
 - [ ] BUG-5: fix computeTurnOrderAfterAddition currentTurn re-anchor
 - [ ] BUG-6: reorderParticipants update turnOrderIds
 - [ ] BUG-8: ws adapter reconnect
-- [ ] FEAT-1: dead participants stay in turn order (update characterization)
-- [ ] M5 docker-compose
-- [ ] M6 undo rework (transactional events table)
-- [ ] M7 Playwright E2E