NEO-63: wire interact to gather engine and expand registry.

Four resource_node anchors; gather denies map to InteractionResponse;
integration tests, Bruno gather/inventory and depletion flows.

bruno/neon-sprawl-server/interaction/Post interact depleted node deny.bru

@@ -0,0 +1,62 @@
+meta {
+  name: POST interact depleted node deny
+  type: http
+  seq: 13
+}
+
+docs {
+  NEO-63: pre-request exhausts prototype_resource_node_alpha capacity (10 successful gathers), then this interact should deny with node_depleted.
+}
+
+script:pre-request {
+  const axios = require("axios");
+  const baseUrl = bru.getEnvVar("baseUrl") || bru.getVar("baseUrl");
+  const playerId = bru.getEnvVar("playerId") || bru.getVar("playerId");
+  await axios.post(
+    `${baseUrl}/game/players/${playerId}/move`,
+    {
+      schemaVersion: 1,
+      target: { x: 10, y: 0.9, z: -6 },
+    },
+    { headers: { "Content-Type": "application/json" } },
+  );
+  for (let i = 0; i < 10; i++) {
+    const res = await axios.post(
+      `${baseUrl}/game/players/${playerId}/interact`,
+      {
+        schemaVersion: 1,
+        interactableId: "prototype_resource_node_alpha",
+      },
+      { headers: { "Content-Type": "application/json" } },
+    );
+    if (!res.data.allowed) {
+      throw new Error(`expected gather ${i + 1}/10 to succeed, got ${res.data.reasonCode}`);
+    }
+  }
+}
+
+post {
+  url: {{baseUrl}}/game/players/{{playerId}}/interact
+  body: json
+  auth: none
+}
+
+headers {
+  content-type: application/json
+}
+
+body:json {
+  {
+    "schemaVersion": 1,
+    "interactableId": "prototype_resource_node_alpha"
+  }
+}
+
+tests {
+  test("depleted node interact denied with node_depleted", function () {
+    expect(res.getStatus()).to.equal(200);
+    const body = res.getBody();
+    expect(body.allowed).to.equal(false);
+    expect(body.reasonCode).to.equal("node_depleted");
+  });
+}

bruno/neon-sprawl-server/interaction/Post interact gather then get inventory.bru

@@ -0,0 +1,48 @@
+meta {
+  name: POST interact gather then GET inventory
+  type: http
+  seq: 12
+}
+
+docs {
+  NEO-63 happy path: move near prototype_resource_node_alpha, interact once, then GET inventory and assert scrap_metal_bulk quantity >= 1.
+}
+
+script:pre-request {
+  const axios = require("axios");
+  const baseUrl = bru.getEnvVar("baseUrl") || bru.getVar("baseUrl");
+  const playerId = bru.getEnvVar("playerId") || bru.getVar("playerId");
+  await axios.post(
+    `${baseUrl}/game/players/${playerId}/move`,
+    {
+      schemaVersion: 1,
+      target: { x: 10, y: 0.9, z: -6 },
+    },
+    { headers: { "Content-Type": "application/json" } },
+  );
+  await axios.post(
+    `${baseUrl}/game/players/${playerId}/interact`,
+    {
+      schemaVersion: 1,
+      interactableId: "prototype_resource_node_alpha",
+    },
+    { headers: { "Content-Type": "application/json" } },
+  );
+}
+
+get {
+  url: {{baseUrl}}/game/players/{{playerId}}/inventory
+  body: none
+  auth: none
+}
+
+tests {
+  test("inventory includes scrap_metal_bulk after gather interact", function () {
+    expect(res.getStatus()).to.equal(200);
+    const body = res.getBody();
+    const total = body.bagSlots
+      .filter((s) => s.itemId === "scrap_metal_bulk")
+      .reduce((sum, s) => sum + s.quantity, 0);
+    expect(total).to.be.at.least(1);
+  });
+}

bruno/neon-sprawl-server/interaction/Post interact prototype resource node gather.bru

@@ -1,12 +1,11 @@
 meta {
-  name: POST interact - prototype_resource_node_alpha (NEO-41 gather XP)
+  name: POST interact - prototype_resource_node_alpha (NEO-63 gather)
   type: http
   seq: 11
 }
 
 docs {
-  NEO-41: successful interact on `resource_node` kind grants `salvage` XP (`sourceKind: activity`, 10 XP) via same server path as POST skill-progression. Pre-request moves the dev player in horizontal range of the node so this request passes when run alone or when global `seq` order would otherwise leave the player far from the anchor. Optional: GET skill-progression to read `salvage.xp`.
-  Server tests include a stub-registry case where `activity` is disallowed for `salvage` (interact still allowed; XP unchanged).
+  NEO-63: successful interact on `resource_node` kind runs GatherOperations — inventory grant (scrap_metal_bulk), salvage XP (activity, 10), and depletion. Pre-request moves in range of alpha anchor (12, -6). Optional: GET inventory / skill-progression after this request.
 }
 
 script:pre-request {

server/NeonSprawl.Server.Tests/Game/Interaction/InteractablesWorldApiTests.cs

@@ -25,7 +25,7 @@ public class InteractablesWorldApiTests
         Assert.NotNull(body);
         Assert.Equal(InteractablesListResponse.CurrentSchemaVersion, body!.SchemaVersion);
         Assert.NotNull(body.Interactables);
-        Assert.True(body.Interactables.Count >= 2);
+        Assert.Equal(5, body.Interactables.Count);
 
         var ids = body.Interactables.Select(static x => x.InteractableId).ToList();
         Assert.Equal(ids.OrderBy(static x => x, StringComparer.Ordinal).ToList(), ids);
@@ -37,6 +37,21 @@ public class InteractablesWorldApiTests
         Assert.Equal(-6, alpha.Anchor.Z);
         Assert.Equal(3.0, alpha.InteractionRadius);
 
+        var beta = body.Interactables.Single(x => x.InteractableId == PrototypeInteractableRegistry.PrototypeSubsurfaceVeinBetaId);
+        Assert.Equal("resource_node", beta.Kind);
+        Assert.Equal(18, beta.Anchor.X);
+        Assert.Equal(-6, beta.Anchor.Z);
+
+        var gamma = body.Interactables.Single(x => x.InteractableId == PrototypeInteractableRegistry.PrototypeBioMatGammaId);
+        Assert.Equal("resource_node", gamma.Kind);
+        Assert.Equal(12, gamma.Anchor.X);
+        Assert.Equal(0, gamma.Anchor.Z);
+
+        var delta = body.Interactables.Single(x => x.InteractableId == PrototypeInteractableRegistry.PrototypeUrbanBulkDeltaId);
+        Assert.Equal("resource_node", delta.Kind);
+        Assert.Equal(18, delta.Anchor.X);
+        Assert.Equal(0, delta.Anchor.Z);
+
         var term = body.Interactables.Single(x => x.InteractableId == PrototypeInteractableRegistry.PrototypeTerminalId);
         Assert.Equal("terminal", term.Kind);
         Assert.Equal(0, term.Anchor.X);

server/NeonSprawl.Server.Tests/Game/Interaction/InteractionResourceNodeGatherIntegrationTests.cs

@@ -0,0 +1,209 @@
+using System.Linq;
+using System.Net;
+using System.Net.Http.Json;
+using NeonSprawl.Server.Game.Gathering;
+using NeonSprawl.Server.Game.Interaction;
+using NeonSprawl.Server.Game.Items;
+using NeonSprawl.Server.Game.PositionState;
+using NeonSprawl.Server.Game.Skills;
+using NeonSprawl.Server.Game.World;
+using Xunit;
+
+namespace NeonSprawl.Server.Tests.Game.Interaction;
+
+/// <summary>NEO-63: <c>resource_node</c> interact delegates to <see cref="GatherOperations"/>.</summary>
+public sealed class InteractionResourceNodeGatherIntegrationTests
+{
+    [Fact]
+    public async Task PostInteract_ResourceNode_WhenInRange_ShouldGrantInventoryAndSalvageXp()
+    {
+        // Arrange — node at (12, -6), radius 3; stand at (10, -6) → horizontal distance 2
+        await using var factory = new InMemoryWebApplicationFactory();
+        var client = factory.CreateClient();
+        await MoveNearAlphaAsync(client);
+
+        // Act
+        var interact = await client.PostAsJsonAsync(
+            "/game/players/dev-local-1/interact",
+            new InteractionRequest
+            {
+                SchemaVersion = InteractionRequest.CurrentSchemaVersion,
+                InteractableId = PrototypeInteractableRegistry.PrototypeResourceNodeAlphaId,
+            });
+        var inventory = await client.GetAsync("/game/players/dev-local-1/inventory");
+        var progression = await client.GetAsync("/game/players/dev-local-1/skill-progression");
+
+        // Assert
+        Assert.Equal(HttpStatusCode.OK, interact.StatusCode);
+        var envelope = await interact.Content.ReadFromJsonAsync<InteractionResponse>();
+        Assert.NotNull(envelope);
+        Assert.True(envelope!.Allowed);
+        Assert.Equal(PrototypeInteractableRegistry.PrototypeResourceNodeAlphaId, envelope.InteractableId);
+
+        Assert.Equal(HttpStatusCode.OK, inventory.StatusCode);
+        var bag = await inventory.Content.ReadFromJsonAsync<PlayerInventorySnapshotResponse>();
+        Assert.NotNull(bag);
+        Assert.Equal(1, CountItem(bag!, "scrap_metal_bulk"));
+
+        Assert.Equal(HttpStatusCode.OK, progression.StatusCode);
+        var skills = await progression.Content.ReadFromJsonAsync<SkillProgressionSnapshotResponse>();
+        Assert.NotNull(skills);
+        var salvage = skills!.Skills!.Single(static s => s.Id == "salvage");
+        Assert.Equal(GatherSkillXpConstants.ActivityXpPerResourceNodeGather, salvage.Xp);
+    }
+
+    [Fact]
+    public async Task PostInteract_ResourceNode_WhenDepleted_ShouldDenyWithNodeDepletedWithoutGrants()
+    {
+        // Arrange
+        await using var factory = new InMemoryWebApplicationFactory();
+        var client = factory.CreateClient();
+        await MoveNearAlphaAsync(client);
+        for (var i = 0; i < 10; i++)
+        {
+            var gather = await client.PostAsJsonAsync(
+                "/game/players/dev-local-1/interact",
+                new InteractionRequest
+                {
+                    SchemaVersion = InteractionRequest.CurrentSchemaVersion,
+                    InteractableId = PrototypeInteractableRegistry.PrototypeResourceNodeAlphaId,
+                });
+            Assert.Equal(HttpStatusCode.OK, gather.StatusCode);
+            var body = await gather.Content.ReadFromJsonAsync<InteractionResponse>();
+            Assert.NotNull(body);
+            Assert.True(body!.Allowed);
+        }
+
+        var inventoryBefore = await client.GetAsync("/game/players/dev-local-1/inventory");
+        var progressionBefore = await client.GetAsync("/game/players/dev-local-1/skill-progression");
+        var bagBefore = await inventoryBefore.Content.ReadFromJsonAsync<PlayerInventorySnapshotResponse>();
+        var skillsBefore = await progressionBefore.Content.ReadFromJsonAsync<SkillProgressionSnapshotResponse>();
+        var scrapBefore = CountItem(bagBefore!, "scrap_metal_bulk");
+        var salvageBefore = skillsBefore!.Skills!.Single(static s => s.Id == "salvage").Xp;
+
+        // Act
+        var interact = await client.PostAsJsonAsync(
+            "/game/players/dev-local-1/interact",
+            new InteractionRequest
+            {
+                SchemaVersion = InteractionRequest.CurrentSchemaVersion,
+                InteractableId = PrototypeInteractableRegistry.PrototypeResourceNodeAlphaId,
+            });
+        var inventoryAfter = await client.GetAsync("/game/players/dev-local-1/inventory");
+        var progressionAfter = await client.GetAsync("/game/players/dev-local-1/skill-progression");
+
+        // Assert
+        Assert.Equal(HttpStatusCode.OK, interact.StatusCode);
+        var envelope = await interact.Content.ReadFromJsonAsync<InteractionResponse>();
+        Assert.NotNull(envelope);
+        Assert.False(envelope!.Allowed);
+        Assert.Equal(GatherReasonCodes.NodeDepleted, envelope.ReasonCode);
+
+        var bagAfter = await inventoryAfter.Content.ReadFromJsonAsync<PlayerInventorySnapshotResponse>();
+        var skillsAfter = await progressionAfter.Content.ReadFromJsonAsync<SkillProgressionSnapshotResponse>();
+        Assert.Equal(scrapBefore, CountItem(bagAfter!, "scrap_metal_bulk"));
+        Assert.Equal(
+            salvageBefore,
+            skillsAfter!.Skills!.Single(static s => s.Id == "salvage").Xp);
+    }
+
+    [Fact]
+    public async Task PostInteract_PrototypeTerminal_ShouldNotGrantInventoryOrSalvageXp()
+    {
+        // Arrange
+        await using var factory = new InMemoryWebApplicationFactory();
+        var client = factory.CreateClient();
+        var move = new MoveCommandRequest
+        {
+            SchemaVersion = MoveCommandRequest.CurrentSchemaVersion,
+            Target = new PositionVector { X = 0.5, Y = 0.9, Z = 0.5 },
+        };
+        await client.PostAsJsonAsync("/game/players/dev-local-1/move", move);
+
+        // Act
+        var interact = await client.PostAsJsonAsync(
+            "/game/players/dev-local-1/interact",
+            new InteractionRequest
+            {
+                SchemaVersion = InteractionRequest.CurrentSchemaVersion,
+                InteractableId = PrototypeInteractableRegistry.PrototypeTerminalId,
+            });
+        var inventory = await client.GetAsync("/game/players/dev-local-1/inventory");
+        var progression = await client.GetAsync("/game/players/dev-local-1/skill-progression");
+
+        // Assert
+        Assert.Equal(HttpStatusCode.OK, interact.StatusCode);
+        var envelope = await interact.Content.ReadFromJsonAsync<InteractionResponse>();
+        Assert.NotNull(envelope);
+        Assert.True(envelope!.Allowed);
+
+        var bag = await inventory.Content.ReadFromJsonAsync<PlayerInventorySnapshotResponse>();
+        Assert.NotNull(bag);
+        Assert.Equal(0, CountItem(bag!, "scrap_metal_bulk"));
+
+        var skills = await progression.Content.ReadFromJsonAsync<SkillProgressionSnapshotResponse>();
+        Assert.NotNull(skills);
+        var salvage = skills!.Skills!.Single(static s => s.Id == "salvage");
+        Assert.Equal(0, salvage.Xp);
+    }
+
+    [Fact]
+    public async Task PostInteract_ResourceNode_WhenSalvageDisallowsActivity_ShouldDenyWithoutGrants()
+    {
+        // Arrange
+        await using var factory = new SalvageActivityDeniedRegistryWebApplicationFactory();
+        var client = factory.CreateClient();
+        await MoveNearAlphaAsync(client);
+
+        // Act
+        var interact = await client.PostAsJsonAsync(
+            "/game/players/dev-local-1/interact",
+            new InteractionRequest
+            {
+                SchemaVersion = InteractionRequest.CurrentSchemaVersion,
+                InteractableId = PrototypeInteractableRegistry.PrototypeResourceNodeAlphaId,
+            });
+        var inventory = await client.GetAsync("/game/players/dev-local-1/inventory");
+        var progression = await client.GetAsync("/game/players/dev-local-1/skill-progression");
+
+        // Assert
+        Assert.Equal(HttpStatusCode.OK, interact.StatusCode);
+        var envelope = await interact.Content.ReadFromJsonAsync<InteractionResponse>();
+        Assert.NotNull(envelope);
+        Assert.False(envelope!.Allowed);
+        Assert.False(string.IsNullOrEmpty(envelope.ReasonCode));
+
+        var bag = await inventory.Content.ReadFromJsonAsync<PlayerInventorySnapshotResponse>();
+        Assert.NotNull(bag);
+        Assert.Equal(0, CountItem(bag!, "scrap_metal_bulk"));
+
+        var skills = await progression.Content.ReadFromJsonAsync<SkillProgressionSnapshotResponse>();
+        Assert.NotNull(skills);
+        var salvage = skills!.Skills!.Single(static s => s.Id == "salvage");
+        Assert.Equal(0, salvage.Xp);
+    }
+
+    private static async Task MoveNearAlphaAsync(HttpClient client)
+    {
+        var move = new MoveCommandRequest
+        {
+            SchemaVersion = MoveCommandRequest.CurrentSchemaVersion,
+            Target = new PositionVector { X = 10, Y = 0.9, Z = -6 },
+        };
+        await client.PostAsJsonAsync("/game/players/dev-local-1/move", move);
+    }
+
+    private static int CountItem(PlayerInventorySnapshotResponse snapshot, string itemId)
+    {
+        var total = 0;
+        foreach (var slot in snapshot.BagSlots!)
+        {
+            if (string.Equals(slot.ItemId, itemId, StringComparison.Ordinal))
+            {
+                total += slot.Quantity;
+            }
+        }
+
+        return total;
+    }
+}

server/NeonSprawl.Server.Tests/Game/Interaction/InteractionResourceNodeGatherXpTests.cs

@@ -9,7 +9,7 @@ using Xunit;
 
 namespace NeonSprawl.Server.Tests.Game.Interaction;
 
-/// <summary>NEO-41: successful <c>resource_node</c> interact grants <c>salvage</c> XP via shared NEO-38 grant path.</summary>
+/// <summary>NEO-41 legacy coverage retained for terminal control; gather side effects covered by NEO-63 integration tests.</summary>
 public sealed class InteractionResourceNodeGatherXpTests
 {
     [Fact]
@@ -79,40 +79,4 @@ public sealed class InteractionResourceNodeGatherXpTests
         var salvage = body!.Skills!.Single(static s => s.Id == "salvage");
         Assert.Equal(GatherSkillXpConstants.ActivityXpPerResourceNodeGather, salvage.Xp);
     }
-
-    [Fact]
-    public async Task PostInteract_ResourceNode_WhenSalvageDisallowsActivity_ShouldStillAllowInteract_AndNotApplyXp()
-    {
-        // Arrange — stub registry: salvage exists but activity is not in allowedXpSourceKinds (defensive / corrupt-catalog stand-in).
-        await using var factory = new SalvageActivityDeniedRegistryWebApplicationFactory();
-        var client = factory.CreateClient();
-        var move = new MoveCommandRequest
-        {
-            SchemaVersion = MoveCommandRequest.CurrentSchemaVersion,
-            Target = new PositionVector { X = 10, Y = 0.9, Z = -6 },
-        };
-        await client.PostAsJsonAsync("/game/players/dev-local-1/move", move);
-
-        // Act
-        var interact = await client.PostAsJsonAsync(
-            "/game/players/dev-local-1/interact",
-            new InteractionRequest
-            {
-                SchemaVersion = InteractionRequest.CurrentSchemaVersion,
-                InteractableId = PrototypeInteractableRegistry.PrototypeResourceNodeAlphaId,
-            });
-        var snapshot = await client.GetAsync("/game/players/dev-local-1/skill-progression");
-
-        // Assert
-        Assert.Equal(HttpStatusCode.OK, interact.StatusCode);
-        var envelope = await interact.Content.ReadFromJsonAsync<InteractionResponse>();
-        Assert.NotNull(envelope);
-        Assert.True(envelope!.Allowed);
-
-        Assert.Equal(HttpStatusCode.OK, snapshot.StatusCode);
-        var body = await snapshot.Content.ReadFromJsonAsync<SkillProgressionSnapshotResponse>();
-        Assert.NotNull(body);
-        var salvage = body!.Skills!.Single(static s => s.Id == "salvage");
-        Assert.Equal(0, salvage.Xp);
-    }
 }

server/NeonSprawl.Server.Tests/Game/Interaction/SalvageActivityDeniedRegistryWebApplicationFactory.cs

@@ -6,6 +6,8 @@ using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Time.Testing;
 using NeonSprawl.Server.Game.AbilityInput;
+using NeonSprawl.Server.Game.Gathering;
+using NeonSprawl.Server.Game.Items;
 using NeonSprawl.Server.Game.Mastery;
 using NeonSprawl.Server.Game.PositionState;
 using NeonSprawl.Server.Game.Skills;
@@ -15,7 +17,7 @@ namespace NeonSprawl.Server.Tests.Game.Interaction;
 
 /// <summary>
 /// Same in-memory overrides as <see cref="InMemoryWebApplicationFactory"/>, plus a stub <see cref="ISkillDefinitionRegistry"/>
-/// where <c>salvage</c> does not allow <c>activity</c> — for NEO-41 defensive tests without mutating disk catalog.
+/// where <c>salvage</c> does not allow <c>activity</c> — for gather deny tests without mutating disk catalog.
 /// </summary>
 public sealed class SalvageActivityDeniedRegistryWebApplicationFactory : WebApplicationFactory<Program>
 {
@@ -29,8 +31,17 @@ public sealed class SalvageActivityDeniedRegistryWebApplicationFactory : WebAppl
         var masteryDir = MasteryCatalogPathResolution.TryDiscoverMasteryDirectory(AppContext.BaseDirectory)
             ?? throw new InvalidOperationException(
                 "Could not discover repo content/mastery from AppContext.BaseDirectory; run tests from the neon-sprawl clone.");
+        var itemsDir = ItemCatalogPathResolution.TryDiscoverItemsDirectory(AppContext.BaseDirectory)
+            ?? throw new InvalidOperationException(
+                "Could not discover repo content/items from AppContext.BaseDirectory; run tests from the neon-sprawl clone.");
+        var resourceNodesDir = ResourceNodeCatalogPathResolution.TryDiscoverResourceNodesDirectory(AppContext.BaseDirectory)
+            ?? throw new InvalidOperationException(
+                "Could not discover repo content/resource-nodes from AppContext.BaseDirectory; run tests from the neon-sprawl clone.");
         builder.UseSetting("Content:SkillsDirectory", skillsDir);
         builder.UseSetting("Content:MasteryDirectory", masteryDir);
+        builder.UseSetting("Content:ItemsDirectory", itemsDir);
+        builder.UseSetting("Content:ResourceNodesDirectory", resourceNodesDir);
+        builder.UseSetting("Game:EnableMasteryFixtureApi", "true");
 
         builder.ConfigureTestServices(services =>
         {
@@ -40,6 +51,8 @@ public sealed class SalvageActivityDeniedRegistryWebApplicationFactory : WebAppl
                 if (d.ServiceType == typeof(IPositionStateStore) ||
                     d.ServiceType == typeof(IPlayerHotbarLoadoutStore) ||
                     d.ServiceType == typeof(IPlayerSkillProgressionStore) ||
+                    d.ServiceType == typeof(IPlayerInventoryStore) ||
+                    d.ServiceType == typeof(IResourceNodeInstanceStore) ||
                     d.ServiceType == typeof(IPlayerPerkStateStore) ||
                     d.ServiceType == typeof(TimeProvider) ||
                     d.ServiceType == typeof(IPlayerAbilityCooldownStore) ||
@@ -58,6 +71,8 @@ public sealed class SalvageActivityDeniedRegistryWebApplicationFactory : WebAppl
             services.AddSingleton<IPositionStateStore, InMemoryPositionStateStore>();
             services.AddSingleton<IPlayerHotbarLoadoutStore, InMemoryPlayerHotbarLoadoutStore>();
             services.AddSingleton<IPlayerSkillProgressionStore, InMemoryPlayerSkillProgressionStore>();
+            services.AddSingleton<IPlayerInventoryStore, InMemoryPlayerInventoryStore>();
+            services.AddSingleton<IResourceNodeInstanceStore, InMemoryResourceNodeInstanceStore>();
             services.AddSingleton<IPlayerPerkStateStore, InMemoryPlayerPerkStateStore>();
             services.AddSingleton<IPlayerAbilityCooldownStore, InMemoryPlayerAbilityCooldownStore>();
             services.AddSingleton<ISkillDefinitionRegistry, SalvageActivityDeniedSkillRegistry>();

server/NeonSprawl.Server/Game/Interaction/InteractionApi.cs

@@ -1,3 +1,5 @@
+using NeonSprawl.Server.Game.Gathering;
+using NeonSprawl.Server.Game.Items;
 using NeonSprawl.Server.Game.Mastery;
 using NeonSprawl.Server.Game.PositionState;
 using NeonSprawl.Server.Game.Skills;
@@ -16,8 +18,10 @@ public static class InteractionApi
         app.MapPost(
             "/game/players/{id}/interact",
             (string id, InteractionRequest? body, IPositionStateStore store,
-                ISkillDefinitionRegistry registry, IPlayerSkillProgressionStore xpStore, ISkillLevelCurve levelCurve,
-                PerkUnlockEngine perkUnlockEngine) =>
+                IResourceNodeDefinitionRegistry nodeRegistry, IItemDefinitionRegistry itemRegistry,
+                IPlayerInventoryStore inventoryStore, ISkillDefinitionRegistry skillRegistry,
+                IPlayerSkillProgressionStore xpStore, ISkillLevelCurve levelCurve, PerkUnlockEngine perkUnlockEngine,
+                IResourceNodeInstanceStore nodeInstanceStore) =>
             {
                 if (body is null || body.SchemaVersion != InteractionRequest.CurrentSchemaVersion)
                 {
@@ -72,17 +76,37 @@ public static class InteractionApi
 
                 if (string.Equals(entry.Kind, PrototypeInteractableRegistry.ResourceNodeKind, StringComparison.Ordinal))
                 {
-                    // NEO-41: prototype gather completion — same grant rules/persistence as POST …/skill-progression.
-                    // Interact response stays Allowed=true; grant outcome is intentionally ignored (silent no-op on deny / store miss per plan).
-                    _ = SkillProgressionGrantOperations.TryApplyGrant(
+                    var gather = GatherOperations.TryGather(
                         playerKey,
-                        GatherSkillXpConstants.SalvageSkillId,
-                        GatherSkillXpConstants.ActivityXpPerResourceNodeGather,
-                        GatherSkillXpConstants.ActivitySourceKind,
-                        registry,
+                        lookupKey,
+                        nodeRegistry,
+                        itemRegistry,
+                        inventoryStore,
+                        skillRegistry,
                         xpStore,
                         levelCurve,
-                        perkUnlockEngine);
+                        perkUnlockEngine,
+                        nodeInstanceStore);
+
+                    if (!gather.Success)
+                    {
+                        return Results.Json(
+                            new InteractionResponse
+                            {
+                                SchemaVersion = InteractionResponse.CurrentSchemaVersion,
+                                Allowed = false,
+                                ReasonCode = gather.ReasonCode,
+                            });
+                    }
+
+                    return Results.Json(
+                        new InteractionResponse
+                        {
+                            SchemaVersion = InteractionResponse.CurrentSchemaVersion,
+                            Allowed = true,
+                            InteractableId = lookupKey,
+                            Payload = new InteractionPlaceholderPayload(),
+                        });
                 }
 
                 return Results.Json(

server/NeonSprawl.Server/Game/Interaction/PrototypeInteractableRegistry.cs

@@ -12,6 +12,15 @@ public static class PrototypeInteractableRegistry
     /// <summary>Second stub row for multi-entity projection (NEO-25).</summary>
     public const string PrototypeResourceNodeAlphaId = "prototype_resource_node_alpha";
 
+    /// <summary>Subsurface lens gather anchor (NEO-63).</summary>
+    public const string PrototypeSubsurfaceVeinBetaId = "prototype_subsurface_vein_beta";
+
+    /// <summary>Bio lens gather anchor (NEO-63).</summary>
+    public const string PrototypeBioMatGammaId = "prototype_bio_mat_gamma";
+
+    /// <summary>Urban bulk lens gather anchor (NEO-63).</summary>
+    public const string PrototypeUrbanBulkDeltaId = "prototype_urban_bulk_delta";
+
     /// <summary><see cref="PrototypeInteractableEntry.Kind"/> for gather-anchor nodes (NEO-41).</summary>
     public const string ResourceNodeKind = "resource_node";
 
@@ -21,10 +30,22 @@ public static class PrototypeInteractableRegistry
     /// <summary>+X / −Z open floor (avoids overlap with scene <c>Obstacle</c> at ~(6,1,5)); same radius as terminal.</summary>
     public static readonly PrototypeInteractableEntry PrototypeResourceNodeAlpha = new(12, 0.5, -6, 3.0, ResourceNodeKind);
 
+    /// <summary>6 m east of alpha on −Z band (NEO-63).</summary>
+    public static readonly PrototypeInteractableEntry PrototypeSubsurfaceVeinBeta = new(18, 0.5, -6, 3.0, ResourceNodeKind);
+
+    /// <summary>6 m north (+Z) of alpha (NEO-63).</summary>
+    public static readonly PrototypeInteractableEntry PrototypeBioMatGamma = new(12, 0.5, 0, 3.0, ResourceNodeKind);
+
+    /// <summary>Northeast open quadrant (NEO-63).</summary>
+    public static readonly PrototypeInteractableEntry PrototypeUrbanBulkDelta = new(18, 0.5, 0, 3.0, ResourceNodeKind);
+
     private static readonly Dictionary<string, PrototypeInteractableEntry> ById = new(StringComparer.Ordinal)
     {
         [PrototypeTerminalId] = PrototypeTerminal,
         [PrototypeResourceNodeAlphaId] = PrototypeResourceNodeAlpha,
+        [PrototypeSubsurfaceVeinBetaId] = PrototypeSubsurfaceVeinBeta,
+        [PrototypeBioMatGammaId] = PrototypeBioMatGamma,
+        [PrototypeUrbanBulkDeltaId] = PrototypeUrbanBulkDelta,
     };
 
     public static bool TryGet(string interactableIdLowercase, out PrototypeInteractableEntry entry) =>