feat(dash): improved frontend dashboard (#6)

Co-authored-by: Sharang Parnerkar <parnerkarsharang@gmail.com>
Reviewed-on: #6

src/models/chat.rs

@@ -0,0 +1,71 @@
+use serde::{Deserialize, Serialize};
+
+/// The role of a participant in a chat conversation.
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub enum ChatRole {
+    /// Message sent by the human user
+    User,
+    /// Message generated by the AI assistant
+    Assistant,
+    /// System-level instruction (not displayed in UI)
+    System,
+}
+
+/// The type of file attached to a chat message.
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub enum AttachmentKind {
+    /// Image file (png, jpg, webp, etc.)
+    Image,
+    /// Document file (pdf, docx, txt, etc.)
+    Document,
+    /// Source code file
+    Code,
+}
+
+/// A file attachment on a chat message.
+///
+/// # Fields
+///
+/// * `name` - Original filename
+/// * `kind` - Type of attachment for rendering
+/// * `size_bytes` - File size in bytes
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct Attachment {
+    pub name: String,
+    pub kind: AttachmentKind,
+    pub size_bytes: u64,
+}
+
+/// A single message in a chat conversation.
+///
+/// # Fields
+///
+/// * `id` - Unique message identifier
+/// * `role` - Who sent this message
+/// * `content` - The message text content
+/// * `attachments` - Optional file attachments
+/// * `timestamp` - ISO 8601 timestamp string
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct ChatMessage {
+    pub id: String,
+    pub role: ChatRole,
+    pub content: String,
+    pub attachments: Vec<Attachment>,
+    pub timestamp: String,
+}
+
+/// A chat session containing a conversation history.
+///
+/// # Fields
+///
+/// * `id` - Unique session identifier
+/// * `title` - Display title (usually derived from first message)
+/// * `messages` - Ordered list of messages in the session
+/// * `created_at` - ISO 8601 creation timestamp
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct ChatSession {
+    pub id: String,
+    pub title: String,
+    pub messages: Vec<ChatMessage>,
+    pub created_at: String,
+}

src/models/developer.rs

@@ -0,0 +1,47 @@
+use serde::{Deserialize, Serialize};
+
+/// An AI agent entry managed through the developer tools.
+///
+/// # Fields
+///
+/// * `id` - Unique agent identifier
+/// * `name` - Human-readable agent name
+/// * `description` - What this agent does
+/// * `status` - Current running status label
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct AgentEntry {
+    pub id: String,
+    pub name: String,
+    pub description: String,
+    pub status: String,
+}
+
+/// A workflow/flow entry from the flow builder.
+///
+/// # Fields
+///
+/// * `id` - Unique flow identifier
+/// * `name` - Human-readable flow name
+/// * `node_count` - Number of nodes in the flow graph
+/// * `last_run` - ISO 8601 timestamp of the last execution
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct FlowEntry {
+    pub id: String,
+    pub name: String,
+    pub node_count: u32,
+    pub last_run: Option<String>,
+}
+
+/// A single analytics metric for the developer dashboard.
+///
+/// # Fields
+///
+/// * `label` - Display name of the metric
+/// * `value` - Current value as a formatted string
+/// * `change_pct` - Percentage change from previous period (positive = increase)
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct AnalyticsMetric {
+    pub label: String,
+    pub value: String,
+    pub change_pct: f64,
+}

src/models/knowledge.rs

@@ -0,0 +1,60 @@
+use serde::{Deserialize, Serialize};
+
+/// The type of file stored in the knowledge base.
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub enum FileKind {
+    /// PDF document
+    Pdf,
+    /// Plain text or markdown file
+    Text,
+    /// Spreadsheet (csv, xlsx)
+    Spreadsheet,
+    /// Source code file
+    Code,
+    /// Image file
+    Image,
+}
+
+impl FileKind {
+    /// Returns the display label for a file kind.
+    pub fn label(&self) -> &'static str {
+        match self {
+            Self::Pdf => "PDF",
+            Self::Text => "Text",
+            Self::Spreadsheet => "Spreadsheet",
+            Self::Code => "Code",
+            Self::Image => "Image",
+        }
+    }
+
+    /// Returns an icon identifier for rendering.
+    pub fn icon(&self) -> &'static str {
+        match self {
+            Self::Pdf => "file-pdf",
+            Self::Text => "file-text",
+            Self::Spreadsheet => "file-spreadsheet",
+            Self::Code => "file-code",
+            Self::Image => "file-image",
+        }
+    }
+}
+
+/// A file stored in the knowledge base for RAG retrieval.
+///
+/// # Fields
+///
+/// * `id` - Unique file identifier
+/// * `name` - Original filename
+/// * `kind` - Type classification of the file
+/// * `size_bytes` - File size in bytes
+/// * `uploaded_at` - ISO 8601 upload timestamp
+/// * `chunk_count` - Number of vector chunks created from this file
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct KnowledgeFile {
+    pub id: String,
+    pub name: String,
+    pub kind: FileKind,
+    pub size_bytes: u64,
+    pub uploaded_at: String,
+    pub chunk_count: u32,
+}

src/models/mod.rs

@@ -1,3 +1,17 @@
+mod chat;
+mod developer;
+mod knowledge;
+mod news;
+mod organization;
+mod provider;
+mod tool;
 mod user;
 
+pub use chat::*;
+pub use developer::*;
+pub use knowledge::*;
+pub use news::*;
+pub use organization::*;
+pub use provider::*;
+pub use tool::*;
 pub use user::*;

src/models/news.rs

@@ -0,0 +1,62 @@
+use serde::{Deserialize, Serialize};
+
+/// Categories for classifying AI news articles.
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub enum NewsCategory {
+    /// Large language model announcements and updates
+    Llm,
+    /// AI agent frameworks and tooling
+    Agents,
+    /// Data privacy and regulatory compliance
+    Privacy,
+    /// AI infrastructure and deployment
+    Infrastructure,
+    /// Open-source AI project releases
+    OpenSource,
+}
+
+impl NewsCategory {
+    /// Returns the display label for a news category.
+    pub fn label(&self) -> &'static str {
+        match self {
+            Self::Llm => "LLM",
+            Self::Agents => "Agents",
+            Self::Privacy => "Privacy",
+            Self::Infrastructure => "Infrastructure",
+            Self::OpenSource => "Open Source",
+        }
+    }
+
+    /// Returns the CSS class suffix for styling category badges.
+    pub fn css_class(&self) -> &'static str {
+        match self {
+            Self::Llm => "llm",
+            Self::Agents => "agents",
+            Self::Privacy => "privacy",
+            Self::Infrastructure => "infrastructure",
+            Self::OpenSource => "open-source",
+        }
+    }
+}
+
+/// A single news feed card representing an AI-related article.
+///
+/// # Fields
+///
+/// * `title` - Headline of the article
+/// * `source` - Publishing outlet or author
+/// * `summary` - Brief summary text
+/// * `category` - Classification category
+/// * `url` - Link to the full article
+/// * `thumbnail_url` - Optional thumbnail image URL
+/// * `published_at` - ISO 8601 date string
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct NewsCard {
+    pub title: String,
+    pub source: String,
+    pub summary: String,
+    pub category: NewsCategory,
+    pub url: String,
+    pub thumbnail_url: Option<String>,
+    pub published_at: String,
+}

src/models/organization.rs

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+use serde::{Deserialize, Serialize};
+
+/// Role assigned to an organization member.
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub enum MemberRole {
+    /// Full administrative access
+    Admin,
+    /// Standard user access
+    Member,
+    /// Read-only access
+    Viewer,
+}
+
+impl MemberRole {
+    /// Returns the display label for a member role.
+    pub fn label(&self) -> &'static str {
+        match self {
+            Self::Admin => "Admin",
+            Self::Member => "Member",
+            Self::Viewer => "Viewer",
+        }
+    }
+
+    /// Returns all available roles for populating dropdowns.
+    pub fn all() -> &'static [Self] {
+        &[Self::Admin, Self::Member, Self::Viewer]
+    }
+}
+
+/// A member of the organization.
+///
+/// # Fields
+///
+/// * `id` - Unique member identifier
+/// * `name` - Display name
+/// * `email` - Email address
+/// * `role` - Assigned role within the organization
+/// * `joined_at` - ISO 8601 join date
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct OrgMember {
+    pub id: String,
+    pub name: String,
+    pub email: String,
+    pub role: MemberRole,
+    pub joined_at: String,
+}
+
+/// A pricing plan tier.
+///
+/// # Fields
+///
+/// * `id` - Unique plan identifier
+/// * `name` - Plan display name (e.g. "Starter", "Team", "Enterprise")
+/// * `price_eur` - Monthly price in euros
+/// * `features` - List of included features
+/// * `highlighted` - Whether this plan should be visually emphasized
+/// * `max_seats` - Maximum number of seats, None for unlimited
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct PricingPlan {
+    pub id: String,
+    pub name: String,
+    pub price_eur: u32,
+    pub features: Vec<String>,
+    pub highlighted: bool,
+    pub max_seats: Option<u32>,
+}
+
+/// Billing usage statistics for the current cycle.
+///
+/// # Fields
+///
+/// * `seats_used` - Number of active seats
+/// * `seats_total` - Total seats in the plan
+/// * `tokens_used` - Tokens consumed this billing cycle
+/// * `tokens_limit` - Token limit for the billing cycle
+/// * `billing_cycle_end` - ISO 8601 date when the current cycle ends
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct BillingUsage {
+    pub seats_used: u32,
+    pub seats_total: u32,
+    pub tokens_used: u64,
+    pub tokens_limit: u64,
+    pub billing_cycle_end: String,
+}

src/models/provider.rs

@@ -0,0 +1,74 @@
+use serde::{Deserialize, Serialize};
+
+/// Supported LLM provider backends.
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub enum LlmProvider {
+    /// Self-hosted models via Ollama
+    Ollama,
+    /// Hugging Face Inference API
+    HuggingFace,
+    /// OpenAI-compatible endpoints
+    OpenAi,
+    /// Anthropic Claude API
+    Anthropic,
+}
+
+impl LlmProvider {
+    /// Returns the display name for a provider.
+    pub fn label(&self) -> &'static str {
+        match self {
+            Self::Ollama => "Ollama",
+            Self::HuggingFace => "Hugging Face",
+            Self::OpenAi => "OpenAI",
+            Self::Anthropic => "Anthropic",
+        }
+    }
+}
+
+/// A model available from a provider.
+///
+/// # Fields
+///
+/// * `id` - Unique model identifier (e.g. "llama3.1:8b")
+/// * `name` - Human-readable display name
+/// * `provider` - Which provider hosts this model
+/// * `context_window` - Maximum context length in tokens
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct ModelEntry {
+    pub id: String,
+    pub name: String,
+    pub provider: LlmProvider,
+    pub context_window: u32,
+}
+
+/// An embedding model available from a provider.
+///
+/// # Fields
+///
+/// * `id` - Unique embedding model identifier
+/// * `name` - Human-readable display name
+/// * `provider` - Which provider hosts this model
+/// * `dimensions` - Output embedding dimensions
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct EmbeddingEntry {
+    pub id: String,
+    pub name: String,
+    pub provider: LlmProvider,
+    pub dimensions: u32,
+}
+
+/// Active provider configuration state.
+///
+/// # Fields
+///
+/// * `provider` - Currently selected provider
+/// * `selected_model` - ID of the active chat model
+/// * `selected_embedding` - ID of the active embedding model
+/// * `api_key_set` - Whether an API key has been configured
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct ProviderConfig {
+    pub provider: LlmProvider,
+    pub selected_model: String,
+    pub selected_embedding: String,
+    pub api_key_set: bool,
+}

src/models/tool.rs

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+use serde::{Deserialize, Serialize};
+
+/// Category grouping for MCP tools.
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub enum ToolCategory {
+    /// Web search and browsing tools
+    Search,
+    /// File and document processing tools
+    FileSystem,
+    /// Computation and math tools
+    Compute,
+    /// Code execution and analysis tools
+    Code,
+    /// Communication and notification tools
+    Communication,
+}
+
+impl ToolCategory {
+    /// Returns the display label for a tool category.
+    pub fn label(&self) -> &'static str {
+        match self {
+            Self::Search => "Search",
+            Self::FileSystem => "File System",
+            Self::Compute => "Compute",
+            Self::Code => "Code",
+            Self::Communication => "Communication",
+        }
+    }
+}
+
+/// Status of an MCP tool instance.
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub enum ToolStatus {
+    /// Tool is running and available
+    Active,
+    /// Tool is installed but not running
+    Inactive,
+    /// Tool encountered an error
+    Error,
+}
+
+impl ToolStatus {
+    /// Returns the CSS class suffix for status styling.
+    pub fn css_class(&self) -> &'static str {
+        match self {
+            Self::Active => "active",
+            Self::Inactive => "inactive",
+            Self::Error => "error",
+        }
+    }
+}
+
+/// An MCP (Model Context Protocol) tool entry.
+///
+/// # Fields
+///
+/// * `id` - Unique tool identifier
+/// * `name` - Human-readable display name
+/// * `description` - Brief description of what the tool does
+/// * `category` - Classification category
+/// * `status` - Current running status
+/// * `enabled` - Whether the tool is toggled on by the user
+/// * `icon` - Icon identifier for rendering
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct McpTool {
+    pub id: String,
+    pub name: String,
+    pub description: String,
+    pub category: ToolCategory,
+    pub status: ToolStatus,
+    pub enabled: bool,
+    pub icon: String,
+}