chore: community feedback fixes and UI improvements (#102)

## Summary

Addresses all community feedback tickets from the last deploy, plus several UI improvements made during the same session.

### Bug fixes & balance
- **#97** — Fix auto-adventurer tier priority: sort by combat power instead of current cost so the highest-tier affordable unit is always purchased
- **#98** — Add Dark Templar adventurer (80k CP) to bridge the Volcanic Depths progression wall; rewire upgrade and quest rewards accordingly
- **#99** — Reorder and buff Shadow Assassin (55k CP, level 12) so Witch Coven feels rewarding rather than a regression
- **#100** — Display effective Gold/s (all multipliers applied) in the resource bar
- **#101** — Add Peasant tier 2 (10x, essence) and tier 3 (50x, crystals) upgrades for meaningful late-game scaling

### Other fixes
- Sync game state to server before auto-boss challenges (matching manual challenge behaviour)
- Refresh Discord avatar hash on every game load via bot token so stale CDN URLs are corrected automatically

### UI improvements
- Replace Donate / Discord / Support / View Profile / Edit Profile buttons with a single avatar dropdown menu
- Collapse all resources except Gold into a click-to-toggle dropdown; orange alert dot appears when a hidden resource is capped

## Closes

Closes #97
Closes #98
Closes #99
Closes #100
Closes #101

Reviewed-on: #102
Co-authored-by: Hikari <hikari@nhcarrigan.com>
Co-committed-by: Hikari <hikari@nhcarrigan.com>

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

@@ -135,7 +135,6 @@ const GameLayout = (): JSX.Element => {
     );
   }
 
-  const profileUrl = `/profile/${state.player.discordId}`;
   const codexBadgeCount = pendingCodexEntryIds.length;
   const storyBadgeCount = pendingStoryChapterIds.length;
 
@@ -160,7 +159,6 @@ const GameLayout = (): JSX.Element => {
         onEditProfile={handleOpenEditProfile}
         onForceSync={forceSync}
         prestigeCount={state.prestige.count}
-        profileUrl={profileUrl}
         resources={state.resources}
         runestones={state.prestige.runestones}
         transcendenceCount={state.transcendence?.count ?? 0}