feat(controllers): #59 RPG systems — ludic.rpg 7-module suite (base + extensible)

Seven independently-usable modules on the six-lever contract with name-keyed
data registries (zero-code content): movement (grid/free/tween, 4/8-axis, veto +
interact), inventory + equipment (stat bonuses via the gameplay modifier stack),
crafting, event-driven quests + flags, an Ink/Yarn dialog graph, Sokoban
pushables + a switch/plate/gate signal graph, and over-time status effects
through the Combat pipeline. Reuses ludic.gameplay Stats/Combat. Deterministic.
21-check example, in the suite (103 passed, 0 failed).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

packages/ludic.rpg/package.ludic

@@ -0,0 +1,19 @@
+# ludic.rpg — the builtin RPG systems suite (#59).
+#
+# Not one controller but seven independently-usable modules, each conforming to the
+# six-lever contract (#57): movement (grid + free, 4/8-axis), inventory, crafting,
+# quests, dialog, puzzles, and a status/combat backbone. Content is name-keyed data
+# registries (items, recipes, quests, dialog trees) so a game or mod adds content
+# with zero code. Reuses ludic.gameplay Stats/Combat/Cooldown. Deterministic
+# (integer only), so save/load (world_save), replay and rollback all hold.
+package "ludic.rpg"
+version "0.1.0"
+kind source
+provides "Mover"
+provides "Inventory"
+provides "Craft"
+provides "Quest"
+provides "Dialog"
+provides "Puzzle"
+provides "Status"
+require "ludic.gameplay" "0.1.0"