docs: mark resource node phase 4 complete

docs/PROJECT_CONTEXT.md

@@ -208,8 +208,9 @@ plugin content, not game architecture.
 - WASD movement is camera-relative.
 - The elevated third-person camera rotates with the mouse and uses smoothed
   follow/focus behavior.
-- Pressing `E` near a task zone directly contributes food, wood, safety, or
-  knowledge, or consumes village food.
+- Pressing `E` near a berry bush or tree extracts its configured yield into the
+  village through the same `ResourceNode` contract used by NPCs.
+- Guard, study, and food interactions still use their temporary task zones.
 - `Escape` releases captured mouse input.
 
 ### Village simulation
@@ -300,9 +301,12 @@ primitive geometry and a few tree assets.
 **Migration status:** NPC `gather_food` and `gather_wood` no longer use the
 farm and forest zones. They target `ResourceNode` instances (berry bushes and
 trees) instead. The zone markers remain for:
-- Player interaction (pressing E near farm/forest zones adds resources)
 - Non-resource NPC tasks (patrol → guard_zone, study → study_zone, rest → rest_zone, eat → food_zone)
 
+The player also harvests food and wood directly from nearby `ResourceNode`
+instances. Extraction returns the actual amount removed, updates the village by
+that amount, and releases an NPC reservation if the source is depleted.
+
 Storage, rest, study, and guard behavior should later migrate to target types
 that match their actual semantics rather than treating every usable object as a
 resource source.
@@ -437,6 +441,8 @@ NpcVisual navigates through the active world
 │   ├── SimNPC.gd
 │   ├── SimVillage.gd
 │   └── SimulationManager.gd
+├── tests/
+│   └── resource_node_player_parity_test.gd
 ├── world/
 │   ├── resource_nodes/
 │   │   ├── ResourceNode.gd
@@ -453,11 +459,13 @@ NpcVisual navigates through the active world
 These are expected prototype constraints, not necessarily isolated bugs:
 
 - Task names and task-to-zone mappings are duplicated strings.
-- Task zones remain for non-resource tasks and player interaction; gather food/wood NPCs use ResourceNode instances instead.
+- Task zones remain for non-resource activities; NPC and player food/wood
+  gathering use `ResourceNode` instances.
 - Mutable simulation state is not serializable through a defined save schema.
 - Randomness is not seeded for deterministic replay.
 - Simulation time depends on `_process` and a scene-tree node.
-- There is no automated test or headless simulation harness.
+- Automated coverage currently contains one headless player-parity and
+  resource-contention scenario; broader simulation coverage is still missing.
 - Resources are global floating-point counters rather than items in locations
   and inventories.
 - NPCs do not have homes, schedules, possessions, memories, relationships,