fix: search game files for ea_app.msi, not just drive_c

The MSI is bundled in steamapps/common with the game files. The script
was only checking drive_c (where Steam copies it after a launch), causing
a false "not found" error before the user had launched the game.

Now searches steamapps/common and all of steamapps as fallbacks, reports
which path it found the MSI at. Also remove stale references to the
"Origin is not installed" error which no longer appears.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01D8ckUJQtj1pH8jtAddBDZs

scripts/setup-swbf2-linux.sh

@@ -99,29 +99,45 @@ if [ ! -d "$PFX_C" ]; then
     echo "Required before running this script:"
     echo "  1. In Steam: right-click SWBF2 → Properties → Compatibility"
     echo "     → Force GE-Proton10-34 (or later)"
-    echo "  2. Click Play on SWBF2 — wait ~10 seconds for 'Origin is not installed'"
-    echo "  3. Close the error, then re-run this script"
+    echo "  2. Click Play on SWBF2 — wait ~10 seconds then close it"
+    echo "  3. Re-run this script"
     exit 1
 fi
 echo "[1/6] Wine prefix: OK"
 
-# ── Step 2: verify ea_app.msi exists ───────────────────────────────────────
+# ── Step 2: locate ea_app.msi ──────────────────────────────────────────────
+# The MSI is bundled with the game files. Steam may also copy it to drive_c
+# when the install script runs. Check both locations.
+if [ ! -f "$MSI" ]; then
+    GAME_DIR=$(find "$STEAM_HOME/steamapps/common" -maxdepth 2 \
+        -name "ea_app.msi" 2>/dev/null | head -1)
+    if [ -n "$GAME_DIR" ]; then
+        echo "Found ea_app.msi in game files: $GAME_DIR"
+        MSI="$GAME_DIR"
+    fi
+fi
+if [ ! -f "$MSI" ]; then
+    # Also search anywhere under steamapps
+    MSI_FOUND=$(find "$STEAM_HOME/steamapps" -name "ea_app.msi" 2>/dev/null | head -1)
+    [ -n "$MSI_FOUND" ] && MSI="$MSI_FOUND"
+fi
 if [ ! -f "$MSI" ]; then
     echo ""
-    echo "ERROR: ea_app.msi not found at $MSI"
+    echo "ERROR: ea_app.msi not found."
     echo ""
-    echo "Launch SWBF2 once so Steam drops ea_app.msi into the Wine prefix."
-    echo "You will see an 'Origin is not installed' error — that is expected."
-    echo "Close it, then re-run this script."
+    echo "Launch SWBF2 once from Steam (with GE-Proton set in Compatibility),"
+    echo "wait ~10 seconds for it to attempt startup, then close it and re-run."
+    echo ""
+    echo "If you just installed the game, verify it downloaded fully in Steam."
     exit 1
 fi
 MSI_SIZE=$(stat -c%s "$MSI")
 if [ "$MSI_SIZE" -lt 50000000 ]; then
     echo "WARNING: ea_app.msi is only $MSI_SIZE bytes (expected ~227 MB)."
-    echo "It may still be copying. Wait a moment and re-run."
+    echo "It may still be downloading. Wait a moment and re-run."
     exit 1
 fi
-echo "[2/6] ea_app.msi ($(( MSI_SIZE / 1048576 )) MB): OK"
+echo "[2/6] ea_app.msi ($(( MSI_SIZE / 1048576 )) MB): OK ($MSI)"
 
 # ── Step 3: extract MSI on the host ────────────────────────────────────────
 echo "[3/6] Extracting EA Desktop files from MSI (~30s)..."