feat: Add slcompose service orchestrator with Infisical secret injection

- Add slcompose.sh: Central orchestrator for managing all Docker services
  * Boot all services at startup with automated Infisical secret injection
  * Commands: up, down, restart, logs, logs-tail, env, env-all
  * Colored environment variable output (blue names, green values)

- Add slcompose.service: Systemd service file for auto-boot on startup
  * Type=oneshot with RemainAfterExit=yes
  * Waits for Docker service before starting
  * Runs on multi-user.target

- Add orchestration.md: Comprehensive documentation
  * Architecture and installation guide
  * Usage examples for all commands
  * Secret injection flow and troubleshooting
  * Performance and security notes

- Update README.md and AI_CONTEXT.md
  * Document service orchestration architecture
  * Explain slcompose functionality and commands
  * Reference new orchestration documentation

openproject/README.md

@@ -99,11 +99,7 @@ Purpose:
 * Mention notifications
 * Project updates
 
-SMTP credentials are stored in:
-
-```text
-/srv/secrets/company.env
-```
+SMTP credentials are provided by Infisical at runtime.
 
 ---
 
@@ -128,13 +124,7 @@ This directory must be included in backups.
 
 ## Secrets
 
-The following values are stored in:
-
-```text
-/srv/secrets/company.env
-```
-
-Variables:
+The following values are provided by Infisical at runtime when the stack is deployed:
 
 ```text
 POSTGRES_OPENPROJECT_PASSWORD

openproject/docker-compose.yml

@@ -4,9 +4,7 @@ services:
     container_name: openproject
     restart: unless-stopped
 
-    env_file:
-      - /srv/secrets/company.env
-
+    # Secrets are injected by Infisical at runtime.
     environment:
       SECRET_KEY_BASE: ${OPENPROJECT_SECRET_KEY_BASE}
       OPENPROJECT_HOST__NAME: team.silveressence.net