M7.1-7.2: Play-loop hand-off — Wizard → WorldGen → PlayScreen

Lands the M7 plan's first two sub-milestones on port/godot.
theriapolis-rpg-implementation-plan-godot-port-m7.md is the design
doc (six screens collapse to four scenes + a camera mode, with
per-screen behavioural contracts and a six-step sub-milestone
breakdown).

M7.1 — WorldGenProgressScreen + GameSession autoload + wizard
hand-off rewrite. GameSession holds the cross-scene state that
outlives any single screen: seed, post-worldgen Ctx, pending
character (from the M6 wizard) and pending save snapshot (for
M7.3's load path). Wizard forwards StepReview.CharacterConfirmed
upward, and TitleScreen swaps to the progress screen instead of
just printing the build summary. The progress screen runs the
23-stage pipeline on a background thread, drives a ProgressBar
from ctx.ProgressCallback, and writes the full exception trace to
user://worldgen_error.log on failure. Escape cancels at the next
stage boundary and returns to title.

M7.2 — PlayScreen with a walking character. Extracted
WorldRenderNode from the M2+M4 WorldView demo so PlayScreen and
WorldView mount the same renderer (biome image + polylines +
bridges + settlement dots + tactical chunk lifecycle + PanZoomCamera
+ per-frame layer visibility + line-width counter-scaling).
PlayScreen owns the streamer (M7.3 save needs it), composes
ContentResolver + ActorManager + WorldClock + AnchorRegistry +
PlayerController, spawns the player at the Tier-1 anchor, and
wires resident + non-resident NPC spawning from chunk-load events
with allegiance-tinted markers.

PlayerController ported engine-agnostic to Theriapolis.Godot/Input/.
Takes pre-resolved dx/dy/dt/isTactical/isFocused instead of poking
MonoGame InputManager + Camera2D, so the arithmetic that advances
PlayerActor.Position and WorldClock.InGameSeconds is bit-identical
to the MonoGame version — saves round-trip cleanly.

Click-to-travel in world-map mode (camera zoom <
TacticalRenderZoomMin), WASD step in tactical mode with axis-
separated motion + encumbrance + sub-second clock carry. HUD
overlay top-left shows HP/AC/seed/tile/biome/view-mode/time. Esc
returns to title (M7.4 replaces this with a pause menu).

Namespace gotcha: Theriapolis.GodotHost.Input shadows the engine's
Godot.Input static class for any file under the GodotHost
namespace tree. Files needing keyboard polls (WorldView,
PlayScreen) fully qualify as Godot.Input.IsKeyPressed.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Theriapolis.Godot/Scenes/TitleScreen.cs

@@ -18,7 +18,7 @@ namespace Theriapolis.GodotHost.Scenes;
 /// </summary>
 public partial class TitleScreen : Control
 {
-    private const string VersionLabel = "PORT / GODOT · M6.20";
+    private const string VersionLabel = "PORT / GODOT · M7.2";
     private const string WizardScenePath = "res://Scenes/Wizard.tscn";
 
     public override void _Ready()
@@ -121,10 +121,15 @@ public partial class TitleScreen : Control
             if (sibling != this) sibling.QueueFree();
         var wizardNode = packed.Instantiate();
         parent.AddChild(wizardNode);
-        // The wizard's "← Title" back-button (visible on step 0) emits
-        // BackToTitle; reinstate this title screen when that fires.
         if (wizardNode is Wizard wizard)
+        {
+            // "← Title" back-button (visible on step 0) emits BackToTitle.
             wizard.BackToTitle += () => SwapBackToTitle(parent);
+            // M7.1 — Confirm & Begin in StepReview is forwarded by the
+            // wizard as CharacterConfirmed. Stash the built character on
+            // GameSession and hand off to WorldGenProgressScreen.
+            wizard.CharacterConfirmed += draft => SwapToWorldGen(parent, draft);
+        }
         QueueFree();
     }
 
@@ -134,6 +139,27 @@ public partial class TitleScreen : Control
         parent.AddChild(new TitleScreen());
     }
 
+    /// <summary>M7.1 hand-off: snapshot the built character + chosen
+    /// name onto <see cref="GameSession"/>, default the seed (a seed-entry
+    /// UI lands later), and swap to <see cref="WorldGenProgressScreen"/>.</summary>
+    private static void SwapToWorldGen(Node parent, UI.CharacterDraft draft)
+    {
+        var session = GameSession.From(parent);
+        // CharacterAssembler.LastBuilt is populated by StepReview's
+        // OnConfirmPressed → TryBuild call immediately before the
+        // CharacterConfirmed signal fires.
+        session.PendingCharacter = CharacterAssembler.LastBuilt;
+        session.PendingName = string.IsNullOrWhiteSpace(draft.CharacterName)
+            ? "Wanderer"
+            : draft.CharacterName;
+        session.Seed = 12345UL;  // default for M7; seed-entry UI is M8+.
+        session.PendingRestore = null;
+        session.PendingHeader = null;
+
+        foreach (Node child in parent.GetChildren()) child.QueueFree();
+        parent.AddChild(new WorldGenProgressScreen());
+    }
+
     private void OnContinue()
     {
         // M7 territory — the play-loop screens that consume the persisted