Prepare the application for deployment to a production environment

Adds Docker Compose configuration, Nginx setup, and deployment scripts.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: dec54137-d5a2-4406-8ad4-5f2f9fb110bf
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/0715008c-7244-40f4-befc-26c014852236/1668b635-4205-40d7-8634-6b7174d94d7b.jpg

postgresql.conf

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+# Configuration PostgreSQL optimisée pour production RegisFlow
+
+# CONNECTIONS AND AUTHENTICATION
+listen_addresses = '*'
+port = 5432
+max_connections = 100
+superuser_reserved_connections = 3
+
+# MEMORY
+shared_buffers = 256MB
+effective_cache_size = 512MB
+work_mem = 4MB
+maintenance_work_mem = 64MB
+
+# WRITE AHEAD LOG
+wal_level = replica
+max_wal_size = 1GB
+min_wal_size = 80MB
+checkpoint_completion_target = 0.7
+wal_buffers = 16MB
+
+# QUERY TUNING
+random_page_cost = 1.1
+effective_io_concurrency = 200
+
+# LOGGING
+log_destination = 'stderr'
+logging_collector = on
+log_directory = 'log'
+log_filename = 'postgresql-%Y-%m-%d.log'
+log_rotation_age = 1d
+log_rotation_size = 100MB
+log_min_duration_statement = 1000
+log_checkpoints = on
+log_connections = on
+log_disconnections = on
+log_lock_waits = on
+log_statement = 'ddl'
+
+# AUTOVACUUM
+autovacuum = on
+autovacuum_max_workers = 3
+autovacuum_naptime = 30s
+
+# LOCALE AND FORMATTING
+datestyle = 'iso, mdy'
+timezone = 'Europe/Paris'
+lc_messages = 'en_US.utf8'
+lc_monetary = 'en_US.utf8'
+lc_numeric = 'en_US.utf8'
+lc_time = 'en_US.utf8'
+default_text_search_config = 'pg_catalog.english'