docs: document Lead Builder Discord role color as #A855F7

WHAT WAS DONE:
- Added warning note to design-bible.md Arcane palette section
- Added troubleshooting entry to holly-discord-roles-setup.md
- Both reference March 28, 2026 incident where the role was found gray

WHY:
Holly's Lead Builder Discord role was found with no color set (gray).
Restored to #A855F7 (Arcane purple) — her Trinity founder identity
color. Documented in two places so future sessions and Holly herself
know what to look for if it happens again.

FILES MODIFIED:
- docs/planning/design-bible.md
- docs/guides/holly-discord-roles-setup.md

Signed-off-by: Chronicler #45 <claude@firefrostgaming.com>

docs/guides/holly-discord-roles-setup.md

@@ -244,6 +244,7 @@ Before telling Michael you're done, verify:
 - "I don't see Copy Role ID" → Enable Developer Mode (see instructions above)
 - "I can't create roles" → Check that you have "Manage Roles" permission in your staff role
 - "Colors don't look right" → Use hex codes #FF6B35 (Fire) and #4ECDC4 (Frost) for consistency
+- "Holly's name appears gray in Discord" → Lead Builder role has lost its color. Go to Server Settings → Roles → Lead Builder → set color to `#A855F7`. This happened March 28, 2026 — the role had no color set. Always verify this is `#A855F7` (Arcane purple). It is Holly's Trinity founder identity color.
 
 ---
 

docs/planning/design-bible.md

@@ -104,6 +104,8 @@ The Trinity of elemental forces, each with a distinct color family.
 
 **Arcane Gradient:** `linear-gradient(135deg, #A855F7 0%, #C77DFF 100%)`
 
+> ⚠️ **Discord Role Color:** Holly's Lead Builder role in Discord must be set to `#A855F7`. This role has been found gray (no color set) at least once — March 28, 2026. If Holly's name ever appears gray in Discord, check the Lead Builder role color and restore it to `#A855F7`. This is her Trinity founder identity color and should never be left unset.
+
 ### D. The Trinity Gradients (Combined Elements)
 
 **Fire + Frost (Classic):**