Restore balanced Kumis fermentation

[Alatyami]

Summary

• re-enable the disabled Kumis Fermentation Barrel recipe
• balance Kumis as Resistance I for five minutes
• accept both vanilla and Growthcraft milk buckets in the Fermentation Barrel
• return the corresponding empty bucket after a successful 1,000 mB transfer

Root cause

Kumis remained disabled after its old invalid output ID was corrected during porting. The current Kumis fluid is registered under growthcraft_milk, but the Fermentation Barrel's generic fluid interaction does not accept vanilla or Growthcraft milk buckets, leaving the restored recipe inaccessible through normal play.

Kumis previously duplicated Pilsner Lager's Resistance II for three minutes despite skipping the lager's grain roasting and wort-brewing stages. Resistance I for five minutes gives the lower-effort drink a useful but distinct role.

Validation

• recipe and translation JSON parsing
• ./gradlew.bat test --tests growthcraft.test.RecipeResourceTest --tests growthcraft.test.RecipeRuntimeCatalogTest -x createMinecraftArtifacts
• ./gradlew.bat compileJava -x createMinecraftArtifacts
• ./gradlew.bat test -x createMinecraftArtifacts
• git diff --check
• confirmed the recipe appears correctly in JEI
• confirmed milk can be inserted and the Kumis recipe completes in game
• confirmed the runtime Kumis translation resolves after resource reload

Closes #195