Chem guidebook (#17123)

* im good at atomizing. welcome to half-finished chem guides.

* wagh

* e

* save work

* aa

* woweee UI

* finishing the last of it

* don't actually update the engine :(

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Co-authored-by: moonheart08 <moonheart08@users.noreply.github.com>

Content.Server/Chemistry/ReagentEffects/Emote.cs

@@ -2,6 +2,7 @@ using Content.Server.Chat.Systems;
 using Content.Shared.Chat.Prototypes;
 using Content.Shared.Chemistry.Reagent;
 using JetBrains.Annotations;
+using Robust.Shared.Prototypes;
 using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
 
 namespace Content.Server.Chemistry.ReagentEffects;
@@ -18,6 +19,10 @@ public sealed class Emote : ReagentEffect
     [DataField("showInChat")]
     public bool ShowInChat;
 
+    // JUSTIFICATION: Emoting is flavor, so same reason popup messages are not in here.
+    protected override string? ReagentEffectGuidebookText(IPrototypeManager prototype, IEntitySystemManager entSys)
+        => null;
+
     public override void Effect(ReagentEffectArgs args)
     {
         if (EmoteId == null)