first commit

task_activities.py

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+from __future__ import annotations
+
+# activities.py
+
+WORKBENCH_ACTIVITIES = {
+    "peg_alignment": {
+        "description": "Aligning and inserting pegs into fixed jigs or holes.",
+        "allowed_objects": ["peg_small", "peg_large"],
+        "allowed_fixtures": ["alignment_jig_hole"],
+        "difficulty_tags": ["alignment", "insertion"],
+    },
+
+    "loose_fastening": {
+        "description": "Loosely fastening bolts into nut plates without full tightening.",
+        "allowed_objects": ["bolt_m3"],
+        "allowed_fixtures": ["nut_plate_hole"],
+        "difficulty_tags": ["threading", "rotation"],
+    },
+
+    "key_lock_rotation": {
+        "description": "Inserting a key and rotating it until a mechanical stop.",
+        "allowed_objects": ["flat_key"],
+        "allowed_fixtures": ["lock_slot"],
+        "difficulty_tags": ["insertion", "limited_rotation"],
+    },
+
+    "drawer_interaction": {
+        "description": "Opening drawers and moving parts in or out.",
+        "allowed_objects": ["small_gear"],
+        "allowed_fixtures": ["drawer"],
+        "difficulty_tags": ["fixture", "occlusion"],
+    },
+}
+
+