feat(0.3.0): Player als Actor-Entity (Phase A.6)

Refactor spine-prototype für player_control v0.2.0 + actor:
- composition.define_template{id="player", properties={position,
  movement_speed, sprite_color, sprite_w, sprite_h}, tags={"renderable"}}
- actor.create instanziiert Player bei map-center
- player_control.update(player, dt) ersetzt player.update(dt)
- camera.set_target / interaction.update lesen via actor.position(player)
  (Lua-multi-return)
- Manueller draw_rect für Player raus — Player wird via
  render.draw_entities{tag="renderable"} zusammen mit Sign gezeichnet
- Draw-order: stones zuerst, dann Entities (Sign + Player). Stones-vs-
  Player-Overlay-Issue in der Praxis nicht relevant (Positionen kollidieren
  nicht)

PLAYER_R/G/B Konstanten entfernt (Color jetzt im Template).

Bumps: 0.2.0 → 0.3.0; +actor v0.1.0; player_control 0.1.0 → 0.2.0.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

manifest.module

@@ -1,6 +1,6 @@
 {
     "id": "spine-prototype",
-    "version": "0.2.0",
+    "version": "0.3.0",
     "kind": "module",
     "api": "^0.1",
     "ci_frames": 30,
@@ -14,7 +14,8 @@
         {"id":"lib-core.camera","version":"0.3.0"},
         {"id":"lib-core.selection","version":"0.1.0"},
         {"id":"lib-core.input","version":"0.4.0"},
-        {"id":"lib-core.player_control","version":"0.1.0"},
+        {"id":"lib-core.player_control","version":"0.2.0"},
+        {"id":"lib-core.actor","version":"0.1.0"},
         {"id":"lib-core.interaction","version":"0.1.0"},
         {"id":"lib-core.command","version":"0.1.0"},
         {"id":"lib-core.composition","version":"0.1.0"},