feat: Implement container logs functionality in InstancesViewModel

- Added properties for managing container logs, including log entries, service filters, and auto-refresh options.
- Introduced commands for refreshing logs, toggling auto-refresh, and closing the logs panel.
- Implemented log fetching logic with error handling and status messages.
- Integrated log display in the InstancesView with a dedicated logs panel.

feat: Enhance navigation to Instances page with auto-selection

- Added method to navigate to the Instances page and auto-select an instance based on abbreviation.

feat: Update SettingsViewModel to load and save Bitwarden configuration

- Integrated Bitwarden configuration loading from IOptions and saving to appsettings.json.
- Added properties for Bitwarden instance project ID and connection status.
- Updated UI to reflect Bitwarden settings and connection status.

feat: Add advanced options for instance creation

- Introduced a new expander in CreateInstanceView for advanced options, including purging stale volumes.

feat: Improve InstanceDetailsWindow with pending setup banner

- Added a banner to indicate pending setup for Xibo OAuth credentials, with editable fields for client ID and secret.

fix: Update appsettings.json to include Bitwarden configuration structure

- Added Bitwarden section to appsettings.json for storing configuration values.

chore: Update Docker Compose template with health checks

- Added health check configuration for web service in template.yml to ensure service availability.

refactor: Drop AppSettings table from database

- Removed AppSettings table and related migration files as part of database cleanup.

feat: Create ServiceLogEntry DTO for log management

- Added ServiceLogEntry class to represent individual log entries from Docker services.

OTSSignsOrchestrator.Core/Services/IBitwardenSecretService.cs

@@ -16,6 +16,13 @@ public interface IBitwardenSecretService
     /// <returns>The ID of the created secret.</returns>
     Task<string> CreateSecretAsync(string key, string value, string note = "");
 
+    /// <summary>
+    /// Creates a new secret in the instance Bitwarden project (falls back to default project if not configured).
+    /// Use this for instance-level secrets such as DB passwords and Newt credentials.
+    /// </summary>
+    /// <returns>The ID of the created secret.</returns>
+    Task<string> CreateInstanceSecretAsync(string key, string value, string note = "");
+
     /// <summary>
     /// Retrieves a secret by its Bitwarden ID.
     /// </summary>
@@ -26,6 +33,11 @@ public interface IBitwardenSecretService
     /// </summary>
     Task UpdateSecretAsync(string secretId, string key, string value, string note = "");
 
+    /// <summary>
+    /// Updates the value of an existing instance-level secret in place (uses instance project if configured).
+    /// </summary>
+    Task UpdateInstanceSecretAsync(string secretId, string key, string value, string note = "");
+
     /// <summary>
     /// Lists all secrets in the configured project.
     /// </summary>