feat: Add Elite Holograms mod to deployment guide

Added Elite Holograms to Quality of Life mods section.

What it does:
- Creates floating holographic text/images in-game
- Display server info, rules, welcome messages, leaderboards
- Professional-looking information displays

Use cases for Firefrost:
- Spawn: Display server rules, tier comparison chart
- Welcome area: Greet new Awakened tier subscribers
- Hub: Show available perks per tier
- Events: Fire vs Frost standings, competitions

Dependencies: Architectury API (required)

Updated:
- Mod list: Elite Holograms is now mod #13
- Renumbered: Waystones → #14, Corpse → #15, Discord → #16, Plan → #17, Voice Chat → #18
- Dependency summary: Added to installation order
- Reference table: Added Elite Holograms entry

Download: https://www.curseforge.com/minecraft/mc-mods/elite-holograms

Chronicler #40

docs/guides/server-side-mod-deployment-guide.md

@@ -265,7 +265,28 @@ Michael will store the MySQL credentials in Vaultwarden so you can access them s
 
 ### Quality of Life Mods (Optional but Recommended)
 
-#### 13. **Waystones**
+#### 13. **Elite Holograms**
+**What it does:** Creates floating holographic text and images in-game. Can display server info, rules, welcome messages, leaderboards, etc.
+
+**Why we need it:** Creates professional-looking information displays at spawn, server rules, tier benefits explanations, welcome messages for new players.
+
+**Dependencies:** 
+- Architectury API (required)
+- Fabric API / Forge API (depending on mod loader - usually auto-included)
+
+**Use cases:**
+- Spawn area: Display server rules, tier comparison chart
+- Welcome area: Greet new Awakened tier subscribers
+- Shop/Hub areas: Show available perks per tier
+- Event areas: Announce competitions or Fire vs Frost standings
+
+**Download:** https://www.curseforge.com/minecraft/mc-mods/elite-holograms
+
+**Note:** Check if your modpack already includes a hologram mod before adding this.
+
+---
+
+#### 14. **Waystones**
 **What it does:** Fast travel between waystone structures. Players place waystones and teleport between them.
 
 **Why we might use it:** Nice QoL feature. Could tie cooldowns to subscriber tiers (like /rtp).
@@ -280,7 +301,7 @@ Michael will store the MySQL credentials in Vaultwarden so you can access them s
 
 ---
 
-#### 14. **Corpse** or **You're In Grave Danger**
+#### 15. **Corpse** or **You're In Grave Danger**
 **What it does:** When you die, your items are stored in a grave/corpse instead of scattering.
 
 **Why we might use it:** Much better death experience for subscribers. Items protected, easy to retrieve.
@@ -293,7 +314,7 @@ Michael will store the MySQL credentials in Vaultwarden so you can access them s
 
 ### Discord Integration (Version-Dependent)
 
-#### 15. **Discord Integration Mod**
+#### 16. **Discord Integration Mod**
 
 **What it does:** Connects Minecraft server to Discord. Shows in-game chat in Discord channel, and vice versa.
 
@@ -315,7 +336,7 @@ Michael will store the MySQL credentials in Vaultwarden so you can access them s
 
 ### Monitoring & Analytics
 
-#### 16. **Plan** (Optional)
+#### 17. **Plan** (Optional)
 **What it does:** Player analytics dashboard. Track playtime, most active players, server performance over time.
 
 **Why we might use it:** Helps Michael/Meg understand player engagement and server health.
@@ -328,7 +349,7 @@ Michael will store the MySQL credentials in Vaultwarden so you can access them s
 
 ### Voice Chat (Optional, if modpack includes it)
 
-#### 17. **Simple Voice Chat**
+#### 18. **Simple Voice Chat**
 **What it does:** Proximity voice chat in-game. Talk to players near you.
 
 **Status:** Only configure if the modpack already has it installed. Don't add it separately.
@@ -379,24 +400,26 @@ Michael will store the MySQL credentials in Vaultwarden so you can access them s
 
 **Step 4: Install Optional Mods (if desired)**
 12. Prism (if available - check dependencies on mod page)
-13. Balm (if installing Waystones)
-14. Waystones (requires: Balm)
-15. Corpse/Grave mod (check dependencies)
-16. Discord integration mod (varies by version)
-17. Plan (if using analytics)
-18. Simple Voice Chat (if modpack includes it)
+13. Elite Holograms (requires: Architectury API)
+14. Balm (if installing Waystones)
+15. Waystones (requires: Balm)
+16. Corpse/Grave mod (check dependencies)
+17. Discord integration mod (varies by version)
+18. Plan (if using analytics)
+19. Simple Voice Chat (if modpack includes it)
 
 ### Quick Dependency Reference
 
 | Mod | Requires | Required By |
 |-----|----------|-------------|
-| Architectury API | None | FTB Library |
+| Architectury API | None | FTB Library, Elite Holograms |
 | FTB Library | Architectury API | FTB Chunks, FTB Essentials, FTB Teams |
 | FTB Teams | FTB Library, Architectury API | FTB Chunks |
 | FTB Chunks | FTB Library, FTB Teams, Architectury API | None |
 | FTB Essentials | FTB Library, Architectury API | None |
 | LuckPerms | None | None |
 | WorldEdit | None | None |
+| Elite Holograms | Architectury API | None |
 | Balm | None | Waystones |
 | Waystones | Balm | None |