docs: Update documentation for 145 files

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docs/auriondocs/Code/src/EchoHub.Server/Data/EchoHubDbContext.cs.md

@@ -8,4 +8,74 @@ public class EchoHubDbContext : DbContext
 ```
 
 
-EchoHubDbContext serves as the EF Core persistence gateway for EchoHub's domain model. It exposes `DbSet<User>`, `DbSet<Channel>`, `DbSet<Message>`, `DbSet<Attachment>`, `DbSet<RefreshToken>`, `DbSet<ChannelMembership>`, `DbSet<InviteCode>`, and `DbSet<ServerStatsReport>`, enabling queries and updates against the underlying SQLite store. When not configured by the application host, it configures a file-based SQLite database named echohub.db located under the application base directory, providing a simple local data store for development and testing. In OnModelCreating it enforces domain rules through keys, indices, field length constraints, and relationship mappings (for example, a Channel has many Messages; a Message has many Attachments; ChannelMembership uses a composite key of UserId and ChannelId), ensuring data integrity and cascade behaviors across related entities.
+EchoHubDbContext is the EF Core `DbContext` that exposes the EchoHub data model to the database. It provides `DbSet` properties for core aggregates such as [`User`](../../EchoHub.Core/Models/User.cs.md), [`Channel`](../../EchoHub.Core/Models/Channel.cs.md), [`Message`](../../EchoHub.Core/Models/Message.cs.md), [`Attachment`](../../EchoHub.Core/Models/Attachment.cs.md), `RefreshToken`, [`ChannelMembership`](../../EchoHub.Core/Models/ChannelMembership.cs.md), [`InviteCode`](../../EchoHub.Core/Models/InviteCode.cs.md), and [`ServerStatsReport`](../../EchoHub.Core/Models/ServerStatsReport.cs.md), enabling typed queries and persistence throughout the application. When the context is not configured by the host, `OnConfiguring` automatically wires up a SQLite database file named `echohub.db` in the application's base directory via `AppContext.BaseDirectory` and the `UseSqlite` provider.
+
+## Remarks
+`EchoHubDbContext` centralizes data access for the domain, acting as the bridge between in-memory entities and their persisted representations. The `OnModelCreating` configuration defines keys, unique constraints, indices, and relationships that enforce data integrity and shape the underlying schema: [`User`](../../EchoHub.Core/Models/User.cs.md) enforces a unique `Username` with length limits; [`Channel`](../../EchoHub.Core/Models/Channel.cs.md) and [`ChannelMembership`](../../EchoHub.Core/Models/ChannelMembership.cs.md) establish channel scopes and membership rules; [`Message`](../../EchoHub.Core/Models/Message.cs.md) and [`Attachment`](../../EchoHub.Core/Models/Attachment.cs.md) model the document and media relationships with cascade deletes to maintain referential integrity; and [`ServerStatsReport`](../../EchoHub.Core/Models/ServerStatsReport.cs.md) records runtime metrics. This design keeps persistence concerns isolated from business logic while ensuring consistent, queryable access to all EchoHub data.
+
+## Dependencies
+- `DbContext`
+- [`User`](../../EchoHub.Core/Models/User.cs.md)
+- [`Channel`](../../EchoHub.Core/Models/Channel.cs.md)
+- [`Message`](../../EchoHub.Core/Models/Message.cs.md)
+- [`Attachment`](../../EchoHub.Core/Models/Attachment.cs.md)
+- `RefreshToken`
+- [`ChannelMembership`](../../EchoHub.Core/Models/ChannelMembership.cs.md)
+- [`InviteCode`](../../EchoHub.Core/Models/InviteCode.cs.md)
+- [`ServerStatsReport`](../../EchoHub.Core/Models/ServerStatsReport.cs.md)
+
+## Dependency APIs
+- property [`User`](../../EchoHub.Core/Models/User.cs.md) (`src/EchoHub.Core/Models/RefreshToken.cs`)
+- class [`Channel`](../../EchoHub.Core/Models/Channel.cs.md) (`src/EchoHub.Core/Models/Channel.cs`)
+  - property `Guid Id`
+  - property `string Name`
+  - property `string? Topic`
+  - property `bool IsPublic`
+  - property `bool IsSystem`
+  - property `string? PasswordHash`
+  - property `string? EncryptionSalt`
+  - property `string? WrappedRoomKey`
+  - property `DateTimeOffset CreatedAt`
+  - property `Guid CreatedByUserId`
+  - property `List<Message> Messages`
+- property [`Message`](../../EchoHub.Core/Models/Message.cs.md) (`src/EchoHub.Core/Models/Attachment.cs`)
+- class [`Attachment`](../../EchoHub.Core/Models/Attachment.cs.md) (`src/EchoHub.Core/Models/Attachment.cs`)
+  - property `Guid Id`
+  - property `Guid MessageId`
+  - property `Message? Message`
+  - property `AttachmentKind Kind`
+  - property `string Url`
+  - property `string FileName`
+  - property `long FileSize`
+  - property `string? AsciiPreview`
+- property `RefreshToken` (`src/EchoHub.Client/Config/ClientConfig.cs`)
+- class [`ChannelMembership`](../../EchoHub.Core/Models/ChannelMembership.cs.md) (`src/EchoHub.Core/Models/ChannelMembership.cs`)
+  - property `Guid UserId`
+  - property `Guid ChannelId`
+  - property `DateTimeOffset JoinedAt`
+- class [`InviteCode`](../../EchoHub.Core/Models/InviteCode.cs.md) (`src/EchoHub.Core/Models/InviteCode.cs`)
+  - property `Guid Id`
+  - property `string Code`
+  - property `Guid CreatedByUserId`
+  - property `string CreatedByUsername`
+  - property `DateTimeOffset CreatedAt`
+  - property `DateTimeOffset? ExpiresAt`
+  - property `int MaxUses`
+  - property `int UseCount`
+- class [`ServerStatsReport`](../../EchoHub.Core/Models/ServerStatsReport.cs.md) (`src/EchoHub.Core/Models/ServerStatsReport.cs`)
+  - property `Guid Id`
+  - property `DateTimeOffset GeneratedAt`
+  - property `DateTimeOffset PeriodStart`
+  - property `DateTimeOffset PeriodEnd`
+  - property `double WindowHours`
+  - property `int MessagesSent`
+  - property `int FilesUploaded`
+  - property `long BytesUploaded`
+  - property `int NewMembers`
+  - property `int ActiveMembers`
+  - property `int Connections`
+  - property `int Disconnections`
+  - …and 5 more member(s) not shown
+
+## Notes
+- The `EchoHubDbContext` relies on SQLite as the backing store when not configured externally; ensure the application process has write access to the base directory where `echohub.db` is created.