Fix static files: include static/ dir in Docker build

The brain logo wasn't being collected by collectstatic because
.dockerignore was too aggressive and STATICFILES_DIRS referenced
directories that might not exist.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: mattstratton

.dockerignore

@@ -4,9 +4,8 @@ __pycache__
 node_modules
 frontend/dist
 .env
-.env.*
+.env.prod
 media/
 staticfiles/
-*.md
 deploy/
 .claude/

config/settings.py

@@ -137,7 +137,7 @@
 
 # Static files
 STATIC_URL = "/static/"
-STATICFILES_DIRS = [BASE_DIR / "static", BASE_DIR / "frontend" / "dist"]
+STATICFILES_DIRS = [d for d in [BASE_DIR / "static", BASE_DIR / "frontend" / "dist"] if d.is_dir()]
 STATIC_ROOT = BASE_DIR / "staticfiles"
 STORAGES = {
     "staticfiles": {