Phase 5: existing field-move mods checked (Cobblemon HMs trial)

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

docs/design.md

@@ -171,6 +171,14 @@ The field guide learned two things on the way: vanilla mobs count as absent (the
 
 - **Shoulder Pokémon** (Adrian, 2026-10-30): Cobblemon lets a player carry a small Pokémon on their shoulder (96 species are `shoulderMountable`: Pidgey, Pikachu, Eevee, Zubat, Squirtle, ...). It has a shoulder-effect system with one type, `potion_effect` (effect, amplifier, particles, icon), but no species uses it in 1.8. Party passives can start there, as data: species additions giving shoulder Pokémon an effect while carried (e.g. Pidgey slow falling, Zubat night vision, a Fire type warmth against Frostpeak's cold), maybe gated behind progression like Cobblebase's skills. To check first: that species additions can set `shoulderEffects`, and how the effect behaves when the Pokémon faints or goes back in its ball.
 
+## Phase 5: existing mods checked first (2026-10-31)
+
+The roadmap lists four mods as prior art; on Cobblemon 1.8 / NeoForge 1.21.1 today:
+
+- [Cobblemon HMs](https://modrinth.com/project/cobblemon-hms) 4.1.0 (NeoForge, Cobblemon ≥ 1.8.0, Kotlin for Forge): send out a Pokémon that knows the move, pick it on Cobblemon's interaction wheel, and your fist uses it. 39 abilities: Cut, Rock Smash, Dig, Strength, Teleport, Leafage, Growth, Flash, Dive, Rock Climb, Magnet Rise, Sweet Scent, weather moves (Rain Dance, Sunny Day, Thunder, Sandstorm, Snowscape, Blizzard), riding boosts (Surf, Tailwind, Agility, ...), Camouflage. Each ability has an on/off switch, cooldown, power, a minimum Pokémon level and a fullness/friendship cost (`config/cobblemon_hms.json`). Tried with the pack: loads, all self-tests pass. License "shiero's Mods License": free, also in a free modpack; anything that earns money (paid pack, paid server perks) needs an agreement with the author. Missing from the roadmap's first set: ignite (Ember/Flamethrower), freeze water (Ice Beam), extinguish and fill cauldrons (Water Gun).
+- [Cobblemon Environment Interactions](https://modrinth.com/project/cobblemon-environment-interactions) 3.1.0 (NeoForge, Apache-2.0, Cobblemon ≥ 1.7.3): type-based mining and utilities while riding or commanding one companion; not move-based.
+- Cobblemon Field Moves (Fabric, Cobblemon 1.6), Cobblemon Map Kit (Fabric), SceneBlocks (special blocks, custom license), CobbleStrike (real-time attacks): no fit.
+
 ## Notes for Phase 6 (researched 2026-10-31)
 
 Adrian asked for existing mods for the multiblocks, or at least their logic. Phase 6's machines need a pattern-checked structure with a controller, a Pokémon stored inside (keeping its data, visible), safe return when the structure breaks, and state that survives unload and restart. Power is already Poke Power's (Phase 4), so the first machine is the Large Furnace. Nothing on NeoForge 1.21.1 puts a Pokémon into a multiblock; the structure part has several options: