Phase 9 begins: bigger, sparser veins, a mine-through respawn block, left-out lines

Phase 8 approved (2026-11-09). Adrian's Phase 9 answers: left-out Pokemon rare
in fitting zones; legendaries from crafted summons; no public release.

- Ore veins more sporadic but bigger: nodes about 40 % rarer, veins about 30 %
  further apart, each one block larger in radius. 1.5-3x the ore overall; a
  new island is needed to see it. World check on the regenerated island passes.
- The respawn block (Regenerating Ore Veins' regenerator): the aim passes
  through it unless sneaking (mixin, the pack's first), so ore behind it can be
  mined; much fainter glass through KubeJS assets. Self-test
  regenerator_lets_the_aim_through casts a real ray.
- 31 lines (67 species) with no matching island biome, or no spawn data
  (Rotom), get rare homes in fitting zones (world/zones.json -> homeless).
  Existing spawns and guardians don't change. JEI data and quests regenerated.
- surface_nodes_lie_in_the_ground checks the node's centre column: a wider
  node's edge can lie under a tree or a slope.
- Roadmap: every implemented Pokemon obtainable; Iris and Complementary
  Reimagined as the default shader.

Self-tests and the island check pass.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

mod/src/main/kotlin/dev/cobblesurvival/selftest/VeinTests.kt

@@ -7,6 +7,7 @@ import net.minecraft.resources.ResourceLocation
 import net.minecraft.server.level.ServerLevel
 import net.minecraft.server.level.ServerPlayer
 import net.minecraft.world.level.ChunkPos
+import net.minecraft.world.level.ClipContext
 import net.minecraft.world.level.GameType
 import net.minecraft.world.level.block.Blocks
 import net.minecraft.world.phys.Vec3
@@ -26,11 +27,35 @@ object VeinTests {
     private val REGENERATOR = ResourceLocation.fromNamespaceAndPath("regenerating_ore_veins", "regenerator_block")
 
     fun all() = listOf(
+        SelfTestCase("regenerator_lets_the_aim_through", 20, ::aimThrough),
         SelfTestCase("vein_regrows_after_unload", 1200, ::afterUnload),
         SelfTestCase("vein_mined_before_restart", 400, ::beforeRestart),
         SelfTestCase("vein_regrows_after_restart", 400, ::afterRestart, afterRestart = true),
     )
 
+    /**
+     * A mined vein block waiting to grow back doesn't stop the player's aim, so the ore behind it can be mined (Adrian,
+     * 2026-11-09; mixin/RegeneratorBlockMixin.java); while sneaking the player can target it, which opens its info.
+     */
+    private fun aimThrough(s: Scenario) {
+        val regenerator = BuiltInRegistries.BLOCK.get(ResourceLocation.parse("regenerating_ore_veins:regenerator_block"))
+        s.check(regenerator != Blocks.AIR) { "Regenerating Ore Veins' regenerator isn't installed" }
+        val player = s.player()
+        val pos = s.helper.absolutePos(BlockPos(7, 2, 7))
+        val behind = pos.east()
+        s.level.setBlockAndUpdate(pos, regenerator.defaultBlockState())
+        s.level.setBlockAndUpdate(behind, Blocks.STONE.defaultBlockState())
+        fun aimedAt(): BlockPos {
+            val from = Vec3(pos.x - 2.5, pos.y + 0.5, pos.z + 0.5)
+            return s.level.clip(ClipContext(from, from.add(6.0, 0.0, 0.0), ClipContext.Block.OUTLINE, ClipContext.Fluid.NONE, player)).blockPos
+        }
+        s.check(aimedAt() == behind) { "the aim stops at ${aimedAt().toShortString()}, not at the block behind the regenerator" }
+        player.isShiftKeyDown = true
+        s.check(aimedAt() == pos) { "sneaking, the aim doesn't find the regenerator (it stops at ${aimedAt().toShortString()})" }
+        player.isShiftKeyDown = false
+        s.helper.succeed()
+    }
+
     private fun afterUnload(s: Scenario) {
         val level = s.level
         val pos = spot(level, UNLOAD_OFFSET)