split data in separate files

docs/ships/modules/archer-tower.md

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+# Archer Tower
+
+**Entity Type:** ShipModule
+
+## Effect
+
+Short-range multi-arrow attack (all-around)
+
+## Tradeoffs
+
+Requires more soldiers/crew.

docs/ships/modules/mast.md

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+# Mast
+
+**Entity Type:** ShipModule
+
+## Effect
+
++long-distance speed (wind)

docs/ships/modules/onager.md

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+# Onager
+
+**Entity Type:** ShipModule
+
+## Effect
+
+Forward catapult (long range, high damage, low accuracy)

docs/ships/modules/reinforced-hull.md

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+# Reinforced Hull
+
+**Entity Type:** ShipModule
+
+## Effect
+
++health/durability

docs/ships/modules/rows.md

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+# Rows (Oars)
+
+**Entity Type:** ShipModule
+
+## Effect
+
++base speed, acceleration, maneuver
+
+## Tradeoffs
+
+Consumes more crew than sails.

docs/ships/modules/scorpio.md

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+# Scorpio
+
+**Entity Type:** ShipModule
+
+## Effect
+
+Side-mounted high-damage spears (medium range)