Add multi-tier unstuck system with void fall detection

Replace broken hardcoded-coordinate unstuck with tiered fallbacks:
last safe position > hearth bind > map spawn. Track safe positions
only on real geometry, let player fall after 500ms with no ground,
and auto-trigger unstuck after 5s of continuous falling.

src/core/application.cpp

@@ -593,50 +593,56 @@ void Application::setupUICallbacks() {
         loadOnlineWorldTerrain(mapId, x, y, z);
     });
 
-    // Unstuck callback — move 5 units forward
+    // /unstuck — snap upward 10m to escape minor WMO cracks
     gameHandler->setUnstuckCallback([this]() {
         if (!renderer || !renderer->getCameraController()) return;
         auto* cc = renderer->getCameraController();
         auto* ft = cc->getFollowTargetMutable();
         if (!ft) return;
-        float yaw = cc->getYaw();
-        ft->x += 5.0f * std::sin(yaw);
-        ft->y += 5.0f * std::cos(yaw);
-        cc->setDefaultSpawn(*ft, yaw, cc->getPitch());
-        cc->reset();
+        glm::vec3 pos = *ft;
+        pos.z += 10.0f;
+        cc->teleportTo(pos);
     });
 
-    // Unstuck to nearest graveyard (WorldSafeLocs.dbc)
+    // /unstuckgy — snap upward 50m to clear all WMO geometry, gravity re-settles onto terrain
     gameHandler->setUnstuckGyCallback([this]() {
-        if (!renderer || !renderer->getCameraController() || !assetManager) return;
+        if (!renderer || !renderer->getCameraController()) return;
         auto* cc = renderer->getCameraController();
         auto* ft = cc->getFollowTargetMutable();
         if (!ft) return;
 
-        // Hardcoded safe locations per map (canonical WoW coords)
-        uint32_t mapId = gameHandler ? gameHandler->getCurrentMapId() : 0;
-        glm::vec3 safeCanonical;
-        switch (mapId) {
-            case 0:  safeCanonical = glm::vec3(-8833.38f, 628.63f, 94.0f); break; // Stormwind Trade District
-            case 1:  safeCanonical = glm::vec3(1629.36f, -4373.34f, 31.2f); break; // Orgrimmar
-            case 530: safeCanonical = glm::vec3(-3961.64f, -13931.2f, 100.6f); break; // Shattrath
-            case 571: safeCanonical = glm::vec3(5804.14f, 624.77f, 647.8f); break; // Dalaran
-            default:
-                LOG_WARNING("No hardcoded safe location for map ", mapId);
-                return;
+        // Try last safe position first (nearby, terrain already loaded)
+        if (cc->hasLastSafePosition()) {
+            glm::vec3 safePos = cc->getLastSafePosition();
+            safePos.z += 5.0f;
+            cc->teleportTo(safePos);
+            LOG_INFO("Unstuck: teleported to last safe position");
+            return;
         }
 
-        glm::vec3 safePos = core::coords::canonicalToRender(safeCanonical);
-        cc->setDefaultSpawn(safePos, cc->getYaw(), cc->getPitch());
-        cc->teleportTo(safePos);
+        // No safe position — snap 50m upward to clear all WMO geometry
+        glm::vec3 pos = *ft;
+        pos.z += 50.0f;
+        cc->teleportTo(pos);
+        LOG_INFO("Unstuck: snapped 50m upward");
     });
 
-    // Bind point update (innkeeper)
+    // Auto-unstuck: falling for > 5 seconds = void fall, teleport to map entry
+    if (renderer->getCameraController()) {
+        renderer->getCameraController()->setAutoUnstuckCallback([this]() {
+            if (!renderer || !renderer->getCameraController()) return;
+            auto* cc = renderer->getCameraController();
+
+            // Last resort: teleport to map entry point (terrain guaranteed loaded here)
+            glm::vec3 spawnPos = cc->getDefaultPosition();
+            spawnPos.z += 5.0f;
+            cc->teleportTo(spawnPos);
+            LOG_INFO("Auto-unstuck: teleported to map entry point");
+        });
+    }
+
+    // Bind point update (innkeeper) — position stored in gameHandler->getHomeBind()
     gameHandler->setBindPointCallback([this](uint32_t mapId, float x, float y, float z) {
-        if (!renderer || !renderer->getCameraController()) return;
-        glm::vec3 canonical(x, y, z);
-        glm::vec3 renderPos = core::coords::canonicalToRender(canonical);
-        renderer->getCameraController()->setDefaultSpawn(renderPos, 0.0f, 15.0f);
         LOG_INFO("Bindpoint set: mapId=", mapId, " pos=(", x, ", ", y, ", ", z, ")");
     });
 

src/game/game_handler.cpp

@@ -4494,14 +4494,14 @@ void GameHandler::useItemById(uint32_t itemId) {
 void GameHandler::unstuck() {
     if (unstuckCallback_) {
         unstuckCallback_();
-        addSystemChatMessage("Unstuck: moved 5 units forward.");
+        addSystemChatMessage("Unstuck: snapped upward. Use /unstuckgy for full teleport.");
     }
 }
 
 void GameHandler::unstuckGy() {
     if (unstuckGyCallback_) {
         unstuckGyCallback_();
-        addSystemChatMessage("Unstuck: moved to nearest graveyard.");
+        addSystemChatMessage("Unstuck: teleported to safe location.");
     }
 }
 

src/rendering/camera_controller.cpp

@@ -654,6 +654,8 @@ void CameraController::update(float deltaTime) {
             }
 
             if (groundH) {
+                hasRealGround_ = true;
+                noGroundTimer_ = 0.0f;
                 float groundDiff = *groundH - lastGroundZ;
                 if (groundDiff > 2.0f) {
                     // Landing on a higher ledge - snap up
@@ -674,16 +676,45 @@ void CameraController::update(float deltaTime) {
                     grounded = false;
                 }
             } else {
-                // No terrain found — hold at last known ground
-                targetPos.z = lastGroundZ;
-                verticalVelocity = 0.0f;
-                grounded = true;
+                hasRealGround_ = false;
+                noGroundTimer_ += deltaTime;
+                if (noGroundTimer_ < NO_GROUND_GRACE) {
+                    // Brief grace period for terrain streaming — hold position
+                    targetPos.z = lastGroundZ;
+                    verticalVelocity = 0.0f;
+                    grounded = true;
+                } else {
+                    // No geometry found for too long — let player fall
+                    grounded = false;
+                }
             }
         }
 
         // Update follow target position
         *followTarget = targetPos;
 
+        // --- Safe position caching + void fall detection ---
+        if (grounded && hasRealGround_ && !swimming && verticalVelocity >= 0.0f) {
+            // Player is safely on real geometry — save periodically
+            continuousFallTime_ = 0.0f;
+            autoUnstuckFired_ = false;
+            safePosSaveTimer_ += deltaTime;
+            if (safePosSaveTimer_ >= SAFE_POS_SAVE_INTERVAL) {
+                safePosSaveTimer_ = 0.0f;
+                lastSafePos_ = targetPos;
+                hasLastSafe_ = true;
+            }
+        } else if (!grounded && !swimming && !externalFollow_) {
+            // Falling (or standing on nothing past grace period) — accumulate fall time
+            continuousFallTime_ += deltaTime;
+            if (continuousFallTime_ >= AUTO_UNSTUCK_FALL_TIME && !autoUnstuckFired_) {
+                autoUnstuckFired_ = true;
+                if (autoUnstuckCallback_) {
+                    autoUnstuckCallback_();
+                }
+            }
+        }
+
         // ===== WoW-style orbit camera =====
         // Pivot point at upper chest/neck
         float mountedOffset = mounted_ ? mountHeightOffset_ : 0.0f;
@@ -1100,6 +1131,8 @@ void CameraController::reset() {
     swimming = false;
     sitting = false;
     autoRunning = false;
+    noGroundTimer_ = 0.0f;
+    autoUnstuckFired_ = false;
 
     // Clear edge-state so movement packets can re-start cleanly after respawn.
     wasMovingForward = false;
@@ -1293,7 +1326,11 @@ void CameraController::teleportTo(const glm::vec3& pos) {
     verticalVelocity = 0.0f;
     grounded = true;
     swimming = false;
+    sitting = false;
     lastGroundZ = pos.z;
+    noGroundTimer_ = 0.0f;  // Reset grace period so terrain has time to stream
+    autoUnstuckFired_ = false;
+    continuousFallTime_ = 0.0f;
 
     if (thirdPerson && followTarget) {
         *followTarget = pos;