Add resource gathering QA gate

AGRARIAN_DEVELOPMENT_ROADMAP.md

@@ -857,7 +857,7 @@ Target deliverable: A small group can join a server, spawn into one biome, gathe
 - [x] Can launch packaged client. Added an MVP QA gate that requires the Windows package script, packaged executable, installed investor launchers, and the real-GPU visual QA readiness check before the client launch gate qualifies.
 - [x] Can launch server. Added an MVP QA gate for the Linux gameplay host requiring the true dedicated build path or current binary-engine fallback, deployment to `/opt/agrarian/server`, `agrarian-game-server.service` active state, UDP `7777` listener evidence, and Ground Zero map browse evidence.
 - [x] Can connect two clients. Added a two-client connection QA gate and Windows helper that checks the packaged client, launches two client instances against the same `play.agrariangame.com:7777` or LAN endpoint, and ties the manual observation steps to the multiplayer latency smoke plan.
-- [ ] Can gather resources.
+- [x] Can gather resources. Added a resource gathering QA gate tied to Ground Zero wood/fiber nodes, server-authoritative resource interaction, replicated harvest depletion, inventory grants, resource persistence coverage, and the natural shelter playable-loop smoke test.
 - [ ] Can craft a fire.
 - [ ] Can craft a shelter.
 - [ ] Can survive one full day/night cycle.

Docs/QA/MvpQaGates.md

@@ -71,3 +71,22 @@ Required evidence:
 The manual observation steps continue in
 `Docs/Ops/MultiplayerLatencyTestPlan.md` until gameplay automation can drive
 two clients directly.
+
+## Resource Gathering
+
+The resource gathering gate proves a player can interact with placed Ground
+Zero resource nodes and receive authoritative resource inventory changes.
+
+Required evidence:
+
+- Ground Zero includes placed wood and fiber resource nodes.
+- `AAgrarianResourceNode` exposes `Gather` or `Gather by hand` prompts.
+- Gathering runs only with server authority.
+- Successful gathering decrements replicated `RemainingHarvests`.
+- The gathered item stack is granted through the character inventory path.
+- Resource depletion persistence is covered by the save/load gate.
+- `Scripts/verify_playable_loop_smoke.py` includes wood and fiber gathering in
+  the natural shelter loop smoke test.
+
+This gate is gameplay/server-relevant and should be covered by the next server
+package deployment.

Scripts/verify_resource_gathering_qa_gate.py

@@ -0,0 +1,66 @@
+#!/usr/bin/env python3
+"""Verify the MVP resource gathering QA gate is covered."""
+
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+ROADMAP = ROOT / "AGRARIAN_DEVELOPMENT_ROADMAP.md"
+QA_DOC = ROOT / "Docs" / "QA" / "MvpQaGates.md"
+RESOURCE_H = ROOT / "Source" / "AgrarianGame" / "AgrarianResourceNode.h"
+RESOURCE_CPP = ROOT / "Source" / "AgrarianGame" / "AgrarianResourceNode.cpp"
+SMOKE = ROOT / "Scripts" / "verify_playable_loop_smoke.py"
+PERSISTENCE = ROOT / "Scripts" / "verify_resource_node_persistence.py"
+
+REQUIRED = {
+    QA_DOC: [
+        "## Resource Gathering",
+        "Gather by hand",
+        "RemainingHarvests",
+        "character inventory path",
+        "verify_playable_loop_smoke.py",
+    ],
+    RESOURCE_H: [
+        "RemainingHarvests",
+        "QuantityPerHarvest",
+        "YieldItemDefinition",
+        "OnRep_RemainingHarvests",
+    ],
+    RESOURCE_CPP: [
+        "FText::FromString(TEXT(\"Gather\"))",
+        "FText::FromString(TEXT(\"Gather by hand\"))",
+        "if (!HasAuthority() || !Interactor || RemainingHarvests <= 0)",
+        "RemainingHarvests--;",
+        "Interactor->GetInventoryComponent()",
+        "Inventory->AddItem(Granted)",
+        "DOREPLIFETIME(AAgrarianResourceNode, RemainingHarvests);",
+    ],
+    SMOKE: [
+        "WOOD_NODE_LABEL",
+        "FIBER_NODE_LABEL",
+        "run_natural_shelter_loop_smoke_test",
+    ],
+    PERSISTENCE: [
+        "FAgrarianSavedResourceNode",
+        "RemainingHarvests",
+    ],
+    ROADMAP: [
+        "[x] Can gather resources.",
+    ],
+}
+
+
+def main() -> None:
+    missing: list[str] = []
+    for path, snippets in REQUIRED.items():
+        text = path.read_text(encoding="utf-8")
+        for snippet in snippets:
+            if snippet not in text:
+                missing.append(f"{path.relative_to(ROOT)} missing {snippet!r}")
+    if missing:
+        raise SystemExit("FAILED: " + "; ".join(missing))
+    print("OK: resource gathering QA gate is covered by gameplay and smoke-test hooks.")
+
+
+if __name__ == "__main__":
+    main()