feat: add character sheet panel with guild info

Adds pronouns, guildName, and guildDescription fields to the player
profile. A new Character tab provides an in-game view/edit panel for
character and guild lore.

Closes #16

apps/web/src/components/game/AboutPanel.tsx

@@ -63,6 +63,10 @@ const HOW_TO_PLAY = [
     title: "📖 Codex",
     body: "Defeating bosses, completing quests, acquiring equipment, hiring adventurers, purchasing upgrades, unlocking prestige upgrades, discovering new zones, collecting from exploration areas, and crafting recipes all permanently unlock lore entries in the Codex. A badge appears on the Codex tab and a toast notification pops up each time new lore is discovered. Collect all 472 entries to build a complete picture of the world of Elysium.",
   },
+  {
+    title: "📋 Character Sheet",
+    body: "Visit the Character tab to write about your character and guild. Fill in your character's name, pronouns, and backstory, then create a guild with its own name and lore. Your character sheet is visible on your public profile page.",
+  },
   {
     title: "☁️ Cloud Saves",
     body: "Your progress is automatically saved to the cloud every 30 seconds whilst you play. You can also force a manual save at any time using the sync button in the resource bar. Your save is protected by HMAC validation to ensure data integrity.",