systems rework: buffs, prestige graph, research, modular architecture

Decouples core systems from centralized globals in favor of catalogue-based architecture and data-driven content.

   Key changes:
   - Prestige: node-based buff tech tree, graph panel, progress bar
   - Research: multi-worker system, per-generator research, xp generation
   - Ascension: meta-currency layer via multi-currency prestige resets
   - Buffs: refactored as generator-independent via catalogues
   - UI: currency panel, edge-scrolling camera + zoom, current-goal panel
   - Alchemy Tower: crafting building with recipe/cost system
   - Testing: 7 test suites (ascension, prestige, research, goals)
   - Content: migrated from hardcoded idles/ to gym format (tiny_sword)

docs/gyms/tiny_sword/buildings/farm/House1.png.import

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+type="CompressedTexture2D"
+uid="uid://dfdh8r03sj7qv"
+path="res://.godot/imported/House1.png-8d2a4466ed180272dd4fd5a1906cd2d6.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://docs/gyms/tiny_sword/buildings/farm/House1.png"
+dest_files=["res://.godot/imported/House1.png-8d2a4466ed180272dd4fd5a1906cd2d6.ctex"]
+
+[params]
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+compress/mode=0
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+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
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+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/channel_remap/red=0
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+process/channel_remap/blue=2
+process/channel_remap/alpha=3
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docs/gyms/tiny_sword/buildings/farm/farm.tscn

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+[gd_scene format=3 uid="uid://djedqovgngrx5"]
+
+[ext_resource type="PackedScene" uid="uid://jeoiinukrrsp" path="res://core/generator/currency_generator.tscn" id="1_rvsna"]
+[ext_resource type="Resource" uid="uid://bxg2au0ijp242" path="res://docs/gyms/tiny_sword/currencies/food.tres" id="2_djlc5"]
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+[ext_resource type="PackedScene" uid="uid://ckos7f22pnmyh" path="res://core/generator/generator_container.tscn" id="5_82rmq"]
+
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_82rmq"]
+size = Vector2(106, 157)
+
+[node name="Farm" type="Node2D" unique_id=283335851]
+
+[node name="CurrencyGenerator" parent="." unique_id=967969064 node_paths=PackedStringArray("info_generator_container") instance=ExtResource("1_rvsna")]
+currency = ExtResource("2_djlc5")
+data = ExtResource("3_82rmq")
+press_buys_generator = false
+info_generator_container = NodePath("../GeneratorContainer")
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+[node name="Sprite2D" type="Sprite2D" parent="." unique_id=1103280443]
+texture = ExtResource("4_djlc5")
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+[node name="GeneratorContainer" parent="." unique_id=1451609580 node_paths=PackedStringArray("_generator") instance=ExtResource("5_82rmq")]
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+offset_left = 138.0
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+offset_right = 402.0
+offset_bottom = 110.0
+_generator = NodePath("../CurrencyGenerator")
+
+[connection signal="mouse_entered" from="Area2D" to="CurrencyGenerator" method="_on_area_2d_mouse_entered"]
+[connection signal="mouse_exited" from="Area2D" to="CurrencyGenerator" method="_on_area_2d_mouse_exited"]

docs/gyms/tiny_sword/buildings/farm/farm_generator.tres

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+
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+name = "Farm"
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