feat(docker): update postgres configuration for improved performance

.gitignore

@@ -51,3 +51,4 @@ OPTIMIZATIONS.md
 
 # Claude doesn't respect AGENTS.md and I don't want double AGENTS.md files on the repo.
 CLAUDE.md
+.github/prompts/

docker-compose.yml

@@ -22,6 +22,18 @@ services:
     image: postgres:16-alpine
     env_file:
       - .env.docker
+    command:
+      - "postgres"
+      - "-c" 
+      - "max_connections=200"
+      - "-c"
+      - "shared_buffers=256MB"
+      - "-c"
+      - "work_mem=16MB"
+      - "-c"
+      - "effective_cache_size=1GB"
+      - "-c"
+      - "maintenance_work_mem=128MB"
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U $$POSTGRES_USER -d $$POSTGRES_DB"]
       interval: 5s