Start first-time join in COVault109 and trigger quest

Change first-time session launch to use the COVault109 start cell and invoke a start quest so the quest can place the player at its preset spawn. Replaces coc SanctuaryExt with coc COVault109, changes the spawn-detection to match the COVault109 editor ID, adds a g_vault109StartQuestIssued flag and IssueVault109StartQuest() to run `startquest CO_Vault109StartQuest` once, and updates logs and reset logic. Also updates docs (changelog.md, docs/dev-log.md) and includes the updated CommonwealthOnline_Vault109.esp binary.

changelog.md

@@ -40,6 +40,8 @@ For testing notes, milestone summaries, known issues, and next steps, see [`docs
 - World time no longer re-applies on every `worldState` heartbeat; weather heartbeats continue at ~1 Hz while time stays in sync during normal gameplay.
 - Updated Weather/Time UI and protocol wording to use world-state host terminology instead of hardcoded player-1 wording.
 - Reformatted `changelog.md` to follow [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
+- First-time character creation launch now uses `coc COVault109` and waits for the `COVault109` start cell instead of `SanctuaryExt`.
+- First-time `COVault109` launch now starts `CO_Vault109StartQuest` once per first-time join flow so the quest can move the player to its preset spawn marker.
 
 
 ## [0.0.1] - 2026-06-23

docs/dev-log.md

@@ -9,6 +9,39 @@ failed experiments, successful tests, and next steps.
 
 ---
 
+## 2026-06-26 - First-Time Join Starts in `COVault109`
+
+### Summary
+Updated first-time session launch flow to start in the custom `COVault109` cell from `CommonwealthOnline_Vault109.esp` instead of `SanctuaryExt`.
+
+### Files Changed
+- `plugin/src/F4TSessionLaunch.cpp`
+- `changelog.md`
+- `docs/dev-log.md`
+
+### Details
+- Replaced first-time launch command from `coc SanctuaryExt` to `coc COVault109`.
+- Updated first-time spawn readiness checks to validate the loaded parent cell by editor ID `COVault109`.
+- Added first-time-flow quest trigger to run `startquest CO_Vault109StartQuest` once after entering `COVault109` so the quest script can move the player to its preset location.
+- Updated first-time flow logging and timeout messages to reference the new start cell name.
+
+### Testing
+- Not run in-game in this session.
+- Recommended manual checks:
+  - Start the server and connect one Fallout 4 instance from main menu for first-time join; confirm launch uses `COVault109`.
+  - Complete Looks/SPECIAL flow and confirm profile save binding still completes.
+  - Reconnect to the same server and confirm associated save load behavior remains unchanged.
+  - Connect two Fallout 4 instances and verify transform packets still send/relay, remote state parsing still works, and proxy actor movement remains visible in `F4TTestCell01`.
+  - Check `CommonwealthOnline.log` for `coc COVault109` and first-time flow progress logs.
+
+### Known Issues
+- If `CommonwealthOnline_Vault109.esp` is missing or the `COVault109` editor ID changes, first-time launch will timeout waiting for the start cell.
+
+### Next Steps
+- If needed, add a fallback path or explicit user-facing error when `COVault109` cannot be loaded.
+
+---
+
 ## 2026-06-26 - Deleted Save Recreates First-Time Flow
 
 ### Summary

plugin/src/F4TSessionLaunch.cpp

@@ -21,8 +21,7 @@
 
 namespace
 {
-	constexpr std::uint32_t kCommonwealthWorldspaceFormId = 0x0000003C;
+	constexpr std::string_view kFirstJoinStartCellEditorId = "COVault109";
-	constexpr std::uint32_t kSanctuaryExtCellFormId = 0x0000DD60;
 	constexpr int kSpawnPollIntervalFrames = 15;
 	constexpr int kMaxSpawnWaitAttempts = 600;
 	constexpr int kWorldReadyDelayPolls = 10;
@@ -43,6 +42,7 @@ namespace
 	CharGenPhase g_charGenPhase = CharGenPhase::None;
 	bool g_pendingProfileBind = false;
 	bool g_cocIssued = false;
+	bool g_vault109StartQuestIssued = false;
 	bool g_sawLooksMenuOpen = false;
 	bool g_sawSpecialMenuOpen = false;
 	int g_spawnPollFrameCounter = 0;
@@ -117,7 +117,7 @@ namespace
 		return a_saveName.size() >= 8 && _strnicmp(a_saveName.data(), "Exitsave", 8) == 0;
 	}
 
-	bool IsPlayerInSanctuaryExt(const RE::PlayerCharacter& a_player)
+	bool IsPlayerInFirstJoinStartCell(const RE::PlayerCharacter& a_player)
 	{
 		if (IsPlaceholderSpawnPosition(a_player)) {
 			return false;
@@ -128,16 +128,8 @@ namespace
 			return false;
 		}
 
-		if (parentCell->GetFormID() == kSanctuaryExtCellFormId) {
+		const auto* editorId = parentCell->GetFormEditorID();
-			return true;
+		return editorId && _stricmp(editorId, kFirstJoinStartCellEditorId.data()) == 0;
-		}
-
-		if (!parentCell->IsExterior()) {
-			return false;
-		}
-
-		const auto* worldspace = parentCell->worldSpace ? parentCell->worldSpace : a_player.cachedWorldspace;
-		return worldspace && worldspace->GetFormID() == kCommonwealthWorldspaceFormId;
 	}
 
 	void LogPlayerLocation(std::string_view a_label, const RE::PlayerCharacter& a_player)
@@ -258,6 +250,7 @@ namespace
 		g_pendingProfileBind = false;
 		g_pendingProfileBindServerKey.clear();
 		g_cocIssued = false;
+		g_vault109StartQuestIssued = false;
 		g_sawLooksMenuOpen = false;
 		g_sawSpecialMenuOpen = false;
 		g_spawnPollFrameCounter = 0;
@@ -271,6 +264,7 @@ namespace
 		g_pendingProfileBind = true;
 		g_pendingProfileBindServerKey = a_serverKey;
 		g_cocIssued = false;
+		g_vault109StartQuestIssued = false;
 		g_sawLooksMenuOpen = false;
 		g_sawSpecialMenuOpen = false;
 		g_spawnPollFrameCounter = 0;
@@ -279,15 +273,26 @@ namespace
 		LogInfo(std::format("Queued first-time coc join for server {}.", a_serverKey));
 	}
 
-	void IssueCocSanctuaryExt()
+	void IssueCocFirstJoinStartCell()
 	{
 		if (g_cocIssued) {
 			return;
 		}
 
 		g_cocIssued = true;
-		RE::Console::ExecuteCommand("coc SanctuaryExt");
+		RE::Console::ExecuteCommand("coc COVault109");
-		LogInfo("Issued coc SanctuaryExt from main menu.");
+		LogInfo("Issued coc COVault109 from main menu.");
+	}
+
+	void IssueVault109StartQuest()
+	{
+		if (g_vault109StartQuestIssued) {
+			return;
+		}
+
+		g_vault109StartQuestIssued = true;
+		RE::Console::ExecuteCommand("startquest CO_Vault109StartQuest");
+		LogInfo("Issued startquest CO_Vault109StartQuest for first-time COVault109 flow.");
 	}
 
 	void OpenLooksMenu()
@@ -406,13 +411,13 @@ namespace
 
 		if (g_charGenPhase == CharGenPhase::CocLoading) {
 			if (!g_cocIssued) {
-				IssueCocSanctuaryExt();
+				IssueCocFirstJoinStartCell();
 			}
 
 			const auto* player = RE::PlayerCharacter::GetSingleton();
-			if (!player || !IsPlayerInSanctuaryExt(*player)) {
+			if (!player || !IsPlayerInFirstJoinStartCell(*player)) {
 				if (++g_spawnWaitAttempts >= kMaxSpawnWaitAttempts) {
-					LogWarning("Timed out waiting for coc SanctuaryExt to finish loading.");
+					LogWarning("Timed out waiting for coc COVault109 to finish loading.");
 					ResetFirstJoinState();
 				}
 				return;
@@ -421,16 +426,18 @@ namespace
 			g_charGenPhase = CharGenPhase::WaitingForWorldReady;
 			g_spawnWaitAttempts = 0;
 			g_worldReadyPolls = 0;
-			LogPlayerLocation("SanctuaryExt loaded, waiting for loading screen to finish", *player);
+			LogPlayerLocation("COVault109 loaded, waiting for loading screen to finish", *player);
 			return;
 		}
 
 		if (g_charGenPhase == CharGenPhase::WaitingForWorldReady) {
 			const auto* player = RE::PlayerCharacter::GetSingleton();
-			if (!player || !IsPlayerInSanctuaryExt(*player)) {
+			if (!player || !IsPlayerInFirstJoinStartCell(*player)) {
 				return;
 			}
 
+			IssueVault109StartQuest();
+
 			if (!IsWorldReadyForCharGen(*player)) {
 				return;
 			}
@@ -534,7 +541,7 @@ namespace F4T::SessionLaunch
 
 				LogWarning(std::format("Server profile '{}' has no bound save file; running first-time flow.", profileKey));
 				QueueFirstTimeCocJoin(profileKey);
-				IssueCocSanctuaryExt();
+				IssueCocFirstJoinStartCell();
 				return true;
 			}
 
@@ -578,7 +585,7 @@ namespace F4T::SessionLaunch
 						*saveFile,
 						profileKey));
 					QueueFirstTimeCocJoin(profileKey);
-					IssueCocSanctuaryExt();
+					IssueCocFirstJoinStartCell();
 					return true;
 				}
 			} else {
@@ -607,7 +614,7 @@ namespace F4T::SessionLaunch
 		}
 
 		QueueFirstTimeCocJoin(serverKey);
-		IssueCocSanctuaryExt();
+		IssueCocFirstJoinStartCell();
 		return true;
 	}