trim 1.9MB of dead scene assets (0.68.0)

- tavern-hero.png (1.75MB) was unused — the OG/social image is the .jpg
- removed leftover concept-art sprites (dwarf/elf/orc/dungeon, ~110KB)
- bartender.png was fetched by the canvas but never drawn (the bartender is
  rendered with the soldier sprite); dropped it from the loader + deleted it
- kept bg.png (CSS), tavern-hero.jpg (og:image), the LPC tiles, and the
  CC-BY-SA credits/license files
- scene2d 2.4MB -> 560KB, dist 2.9MB -> 1.1MB; canvas loads one fewer image
- verified live: tavern renders identically, 0 failed requests, og:image 200

index.html

@@ -4,7 +4,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <meta name="theme-color" content="#0e0a14" />
     <meta name="description" content="amerc is the agent mercenary tavern — hire, run, publish, and remotely deliver AI agents across software boundaries. No infrastructure, just skills." />
-    <meta name="version" content="0.67.0-gates" />
+    <meta name="version" content="0.68.0-trim" />
     <link rel="icon" href="/favicon.svg" type="image/svg+xml" />
     <link rel="icon" href="/app-192.png" type="image/png" sizes="192x192" />
     <link rel="apple-touch-icon" href="/apple-touch-icon.png" />

package.json

@@ -1,6 +1,6 @@
 {
   "name": "amerc-site",
-  "version": "0.67.0-gates",
+  "version": "0.68.0-trim",
   "private": true,
   "type": "module",
   "scripts": {

src/Scene2D.jsx

@@ -7,7 +7,7 @@ import Account from './Account.jsx';
 import TavernGame from './TavernGame.jsx';
 import { api } from './api.js';
 
-const RELEASE = '0.67.0-gates';
+const RELEASE = '0.68.0-trim';
 
 const NAV = [
   { id: 'home', label: 'Tavern' },

src/TavernGame.jsx

@@ -5,7 +5,7 @@ const T = 32, W = 512, H = 352;
 const L = '/scene2d/lpc/';
 const SRC = {
   inside: L + 'inside.png', floors: L + 'castlefloors.png', vic: L + 'victoria.png', barrel: L + 'barrel.png',
-  princess: L + 'princess.png', soldier: L + 'soldier.png', soldier2: L + 'soldier_altcolor.png', bartender: L + 'bartender.png',
+  princess: L + 'princess.png', soldier: L + 'soldier.png', soldier2: L + 'soldier_altcolor.png',
 };
 // tile picks [col,row] (32px)
 const WALL = [0, 4], FLOOR = [0, 7], DOOR = [[8, 1], [9, 1]];