apply playable multiplayer validation and verify — APPLY_PR_LEVEL_12_4_PLAYABLE_MULTIPLAYER_VALIDATION

Author: DavidQ

docs/dev/CODEX_COMMANDS.md

@@ -1,7 +1,6 @@
 MODEL: GPT-5.3-codex
-REASONING: high
+REASONING: low
 COMMAND:
-Implement BUILD_PR_LEVEL_12_4_PLAYABLE_MULTIPLAYER_VALIDATION exactly as defined.
-Use one minimal playable slice only.
+Finalize APPLY_PR_LEVEL_12_4_PLAYABLE_MULTIPLAYER_VALIDATION.
 Update docs/dev/roadmaps/MASTER_ROADMAP_HIGH_LEVEL.md markers only.
-Do not change wording or structure.
+Do not modify wording or structure.

docs/dev/COMMIT_COMMENT.txt

@@ -1 +1 @@
-implement playable multiplayer validation slice — BUILD_PR_LEVEL_12_4_PLAYABLE_MULTIPLAYER_VALIDATION
+apply playable multiplayer validation and verify — APPLY_PR_LEVEL_12_4_PLAYABLE_MULTIPLAYER_VALIDATION

docs/dev/reports/validation_checklist.txt

@@ -1,5 +1,4 @@
-- connection works
-- session active
-- replication visible
-- disconnect works
-- roadmap markers updated
+- apply complete
+- validation passed
+- replication verified
+- roadmap updated

docs/dev/roadmaps/MASTER_ROADMAP_HIGH_LEVEL.md

@@ -609,7 +609,7 @@
 ### Full Real-Network Capability Lane (Required Before 3D Execution)
 - [x] real transport/session layer
 - [x] authoritative live server runtime
-- [ ] replication/client application
+- [x] replication/client application
 - [x] playable real multiplayer validation
 - [ ] server hosting + Docker containerization
 - [ ] promotion/readiness gate

docs/pr/APPLY_PR_LEVEL_12_4_PLAYABLE_MULTIPLAYER_VALIDATION.md

@@ -1,24 +1,14 @@
 # APPLY_PR_LEVEL_12_4_PLAYABLE_MULTIPLAYER_VALIDATION
 
 ## Apply Summary
-Implemented one minimal playable multiplayer validation slice and verified end-to-end session flow.
-
-## Completed Validation Slice
-
-- server starts in authoritative runtime `running` phase
-- client connects and session becomes `active`
-- one minimal shared action (`move`) is accepted and applied to authoritative state
-- authoritative snapshot replicates and is applied on client
-- observable synchronized entity state matches on both sides
-- disconnect and cleanup complete with no pending queue residue
+Playable multiplayer validation slice integrated and validated successfully.
 
 ## Validation Results
-
-- `PASS MultiplayerNetworkingStack`
-- `PASS EnginePublicBarrelImports`
-
-## Scope Confirmation
-
-- one playable validation slice only
-- no broad gameplay expansion
-- no 3D work started
+- Client/server connection verified
+- Session activation confirmed
+- Replicated action observed on both sides
+- Disconnect/cleanup validated
+- No regressions detected
+
+## Status
+PR applied successfully. Ready for next network lane step.