Add self-hosting capabilities and deployment guide for the application

Implement self-hosting for RockyLinux by adding systemd and Nginx configurations, updating API models to support standard OpenAI keys, and providing a comprehensive deployment guide.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 923ae0e3-a363-4db8-b04a-e8baca2a1330
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Event-Id: f8aa455f-f180-4964-94dd-11cfb1a42383
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/8af7d2ec-2cc3-4ece-8af3-9f071488d072/923ae0e3-a363-4db8-b04a-e8baca2a1330/VnHW0bR
Replit-Helium-Checkpoint-Created: true

.gitignore

@@ -1,49 +1,55 @@
-# See https://docs.github.com/en/get-started/getting-started-with-git/ignoring-files for more about ignoring files.
+# Dépendances
+node_modules/
+.pythonlibs/
+__pycache__/
+*.pyc
+*.pyo
+*.pyd
+.Python
+pip-log.txt
 
-# compiled output
-dist
-tmp
-out-tsc
+# Build
+dist/
+tmp/
+out-tsc/
 *.tsbuildinfo
-.expo
-.expo-shared
+build/
 
-# dependencies
-node_modules
+# Environnement
+.env
+.env.local
+.env.*.local
 
-# IDEs and editors
-/.idea
-.project
-.classpath
-.c9/
-*.launch
-.settings/
-*.sublime-workspace
+# Cache Replit
+.cache/
+.local/
+.upm/
+uv.lock
 
-# IDE - VSCode
+# Expo / mobile
+.expo/
+.expo-shared/
+
+# Logs
+*.log
+logs/
+
+# IDEs
+.idea/
 .vscode/*
 !.vscode/settings.json
 !.vscode/tasks.json
 !.vscode/launch.json
 !.vscode/extensions.json
+*.sublime-workspace
+.project
+.classpath
+.c9/
+*.launch
+.settings/
 
-# misc
-/.sass-cache
-/connect.lock
-/coverage
-/libpeerconnection.log
-npm-debug.log
-yarn-error.log
-testem.log
-/typings
-
-# System Files
+# Système
 .DS_Store
 Thumbs.db
-
-.cursor/rules/nx-rules.mdc
-.github/instructions/nx.instructions.md
-
-# Replit
-.cache/
-.local/
+*.sass-cache
+coverage/