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AGENTS.md Normal file
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# Everjoy — Agent Onboarding Guide
> This file is written for AI coding agents. It assumes you know Rust but nothing about this project. For background, also read `doc/Purpose.MD`, `doc/Architecture.md`, `doc/Architecture-Runtime-and-Plugin.md`, `doc/Plugin-Lifecycle-Tool-vs-Provider.md`, and `TECH_STACK.md`.
## Project Overview
**Everjoy** is an AI-native TUI IDE / workflow tool written in Rust. It is currently at version `0.1.0` and is best described as an early MVP:
- A terminal user interface built with `ratatui` + `crossterm`.
- Three-panel layout: Sidebar (file tree), Main (editor / terminal), Agent (chat).
- A runtime architecture based on providers, tools, and an explicit `Command` pattern.
- An agent framework skeleton (roles, orchestrator, memory, tool invoker) that is not yet fully wired to an LLM.
- A plugin subsystem designed for external `.wasm` / `.so` extensions, but the loader and translator are currently stubs.
The project is organized as a single Cargo crate. There is no `pyproject.toml`, `package.json`, or other build system — Rust/Cargo is the only toolchain you need.
## Key Configuration Files
- `Cargo.toml` — Single crate named `everjoy`, edition `2021`. Lists all production dependencies (TUI, async, serialization, SQLite, text/files, config, utils). `[dev-dependencies]` is empty.
- `Cargo.lock` — Committed; pin your dependency versions.
- `.gitignore` — Standard Rust ignore (`/target`).
No custom `rustfmt.toml` or `clippy.toml` was found; use the default toolchain settings.
## Build and Run
```bash
# Compile
cargo build
# Run the TUI application
cargo run
# Fast check
cargo check
# Release build
cargo build --release
```
The binary runs in the terminal using the alternate screen. Current controls:
- `Ctrl+Q` — quit.
- `Ctrl+J` / `Ctrl+K` / `Ctrl+L` — focus Sidebar / Main / Agent panel.
- `Alt+<underlined letter>` — open menubar.
- Press any key from the splash screen to enter the main UI.
## Test Commands
```bash
cargo test
```
There are 23 unit tests, all passing. They live in inline `#[cfg(test)]` modules inside the built-in providers:
- `src/builtin/editor/tests.rs`
- `src/builtin/filetree/tests.rs`
- `src/builtin/agentchat/tests.rs`
- `src/builtin/terminal/tests.rs`
There are no integration tests or benchmarks yet. Keep it that way unless a feature genuinely needs them.
## Code Organization
```
src/
main.rs # App struct, event loop, command dispatch, terminal setup
lib.rs # Re-exports: agent, builtin, plugin, runtime, ui
runtime/ # Core engine interfaces and registry
mod.rs
traits.rs # Plugin, PanelProvider, Tool, Command, Source, Registrar, etc.
registry.rs # ModuleRegistry: lazy provider factories, tool/menu/status storage, bidding
lifecycle.rs # LifecycleManager (mostly TODO)
ctx.rs # RuntimeServices trait (ProviderCtx was removed)
ui/ # TUI framework helpers
mod.rs
layout.rs # Three-panel ratios (sidebar 20%, main 52%, agent 28%)
focus.rs # FocusManager across panels
menubar.rs # Top menubar with Alt+ shortcuts
statusbar.rs # Bottom status bar
splash.rs # Startup splash screen
scheduler.rs # RenderScheduler (stub)
router.rs # EventRouter (stub)
agent/ # Agent framework skeleton
mod.rs
roles.rs # Built-in roles: secretary, driver, negfeedback, executor
orchestrator.rs # Multi-agent coordinator (stub)
memory.rs # MemorySystem (stub)
tools.rs # ToolInvoker (stub)
plugin/ # External plugin adapter (designed but not implemented)
mod.rs
loader.rs # ExtensionLoader (stub)
translator.rs # C-ABI ↔ Rust trait wrapper (stub)
surface.rs # EjSurface / EjCell for plugin rendering
panic.rs # Panic isolation helper
builtin/ # Built-in panel providers
mod.rs
editor/mod.rs # EditorProvider (Main panel, text files)
filetree/mod.rs # FileTreeProvider (Sidebar, project navigator)
agentchat/mod.rs # AgentChatProvider (Agent panel, chat UI)
terminal/mod.rs # TerminalProvider (Main panel, mock shell)
tasktree/mod.rs # TaskTreeProvider (Main panel, task view stub)
```
## Runtime Architecture
The project centers on the **Runtime Subsystem** (`src/runtime/`). Understand these concepts before changing anything:
1. **`PanelProvider`** — Anything that renders into one of the three panels (`Sidebar`, `Main`, `Agent`). Each provider has:
- `id()` — unique string id.
- `render(area, buf)` — called every frame.
- `handle_event(event) -> (EventResult, Vec<Command>)` — input handling plus explicit commands back to the app.
- `focus_changed`, `hide`, `show`, `shutdown` — lifecycle hooks.
- `can_open(source, mime_hint) -> i32` — bidding score; higher wins when the app needs to present content.
- `as_any` / `as_any_mut` — implemented so the app can downcast to concrete types (e.g. to read editor cursor state for the status bar).
2. **`Command` pattern** — Providers do not call system APIs directly. They return `Vec<Command>` from `handle_event`. The `App` in `main.rs` is the sole dispatcher. Commands are:
- `Present { panel, source, mime_hint }` — let providers bid for the source.
- `Launch { panel, tool_id, params }` — direct dispatch by provider id.
- `FocusPanel(panel)` — change focus.
- `ShowMessage { msg, level }` — show a transient status message.
3. **`ModuleRegistry`** — Holds provider factories, tool handlers, menu items, and status widgets. Provider instances are created lazily via `ensure_instance(id)`. It also implements `Registrar`, which is the interface exposed during plugin bootstrap.
4. **Tool vs Provider lifecycle** — Tools are registered once at plugin bootstrap and live until unload. Providers are created/destroyed per panel instance. This separation is intentional; see `doc/Plugin-Lifecycle-Tool-vs-Provider.md`.
5. **Built-in vs External** — Built-in modules implement Runtime traits directly. External modules are planned to be loaded by `plugin::loader` and wrapped by `plugin::translator` into `Box<dyn PanelProvider>` / `Box<dyn Tool>`.
## Current Built-in Providers
| Id | Panel | Purpose |
|---|---|---|
| `filetree` | Sidebar | Project file navigator; emits `Command::Present` on Enter to open files in Main. |
| `editor` | Main | Simple text editor with line numbers, basic Rust highlighting, and cursor movement. |
| `terminal` | Main | Mock integrated terminal with command history (`help`, `clear`, `pwd`, `ls`, `agents`, `version`). |
| `agentchat` | Agent | Chat UI with backend selector (Claude / GPT-4 / Local), message scrolling, and input. |
| `tasktree` | Main | Visual stub of agent task lists. |
Default active providers are hard-coded in `main.rs`: Sidebar = `filetree`, Main = `editor`, Agent = `agentchat`.
## Agent Framework
The agent code is intentionally lightweight and not yet connected to an LLM:
- `agent::roles::builtin_roles()` defines four roles (`secretary`, `driver`, `negfeedback`, `executor`) with icons, colors, system prompts, and allowed tools.
- `agent::tools::ToolInvoker` is a stub that returns `ToolOutput::err("not implemented")`.
- `agent::orchestrator::Orchestrator`, `agent::memory::MemorySystem` are also stubs.
- The `Tool` trait lives in `runtime::traits` and is the interface agents will call via LLM function calling.
When you add LLM integration, the expected flow is:
1. Agent decides to call a tool.
2. `ToolInvoker` looks up the tool by name in `ModuleRegistry::tools`.
3. `Tool::execute()` runs and returns `ToolOutput`.
4. Result goes back into the agent conversation loop.
## Code Style Guidelines
- Follow the existing module structure: one folder per subsystem, `mod.rs` + focused files.
- Implement `PanelProvider` using the same pattern as the built-ins:
- Implement `as_any` / `as_any_mut` with `self`.
- Return `(EventResult, Vec<Command>)` from `handle_event`.
- Provide lifecycle methods (`focus_changed`, `hide`, `show`, `shutdown`).
- Keep `main.rs` as the single dispatcher for `Command`. Do not re-introduce a `ProviderCtx`-style black-box router.
- Use `anyhow::Result` for application-level error handling. `thiserror` is a dependency but not yet used heavily.
- Prefer explicit TODO comments for missing functionality; many already exist. Do not delete them unless you actually implement the feature.
- Avoid adding heavy new dependencies without updating `TECH_STACK.md` and this file.
## Testing Instructions
- Add unit tests inside `#[cfg(test)] mod tests;` in the relevant module. Reference the existing test modules for style.
- Use `crossterm::event::{Event, KeyCode, KeyEvent}` to simulate keyboard input in tests.
- Assert on `EventResult::Consumed` vs `EventResult::PassThrough` and on emitted `Command`s where appropriate.
- Run `cargo test` before finishing any change. The current baseline is 23 passed tests.
## Security Considerations
- There are no secrets, API keys, or credentials in this repository.
- Future AI provider API keys are planned to live in `~/.config/everjoy/config.toml` (not yet implemented). Do not commit keys.
- Tool execution is intended to be guarded by `auto_execute_tools = false` in user config; dangerous operations should require user confirmation. Respect this design if you wire up tool execution.
- External plugins are designed to be sandboxed via WASM / C-ABI translation with panic isolation. Until the loader and translator are implemented, no external plugins are actually loaded.
- The terminal provider is currently a mock shell. If you replace it with real `tokio::process::Command` execution, sanitize inputs and require explicit user approval before running commands.
## Useful References
- `doc/Purpose.MD` — Why the project exists.
- `doc/Architecture.md` — High-level architecture and data flows.
- `doc/Architecture-Runtime-and-Plugin.md` — Runtime vs Plugin subsystem responsibilities.
- `doc/Plugin-Lifecycle-Tool-vs-Provider.md` — Why tools and providers have separate lifecycles.
- `TECH_STACK.md` — Dependency map and design decisions (note: some entries are aspirational).
*Have fun building Everjoy. — For Hoshu Chiu & Everjoy Chiu 🐕*

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// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
/// Short-term and long-term memory for agents.
pub struct MemorySystem;

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// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
pub mod memory;
pub mod orchestrator;
pub mod roles;

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// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
/// Coordinates multiple agents and dispatches tasks.
pub struct Orchestrator;

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// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use ratatui::style::Color;
/// Agent role definition. Managed by core system, not plugins.

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// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use crate::runtime::{ToolInput, ToolOutput};
/// Invokes tools on behalf of agents via LLM function calling.

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// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use ratatui::style::Color;
use crate::runtime::{Command, MessageLevel};
use super::App;
impl App {
pub(crate) fn dispatch_command(&mut self, cmd: Command) {
match cmd {
Command::Present {
panel,
source,
mime_hint,
} => {
let guessed = source.mime_hint();
let mime_str = mime_hint.as_deref().or(guessed.as_deref());
if let Some((id, _score)) =
self.registry.find_best_provider(panel, &source, mime_str)
{
// Hide current provider on this panel if different
if let Some(old_id) = self.active_providers.get(&panel) {
if old_id != &id {
if let Some(inst) = self.registry.ensure_instance(old_id) {
inst.hide();
}
}
}
self.active_providers.insert(panel, id.clone());
if let Some(inst) = self.registry.ensure_instance(&id) {
inst.show();
if self.focus.panel == panel {
inst.focus_changed(true);
}
}
}
}
Command::Launch { panel, tool_id, .. } => {
// Direct dispatch by provider id
if let Some(old_id) = self.active_providers.get(&panel) {
if old_id != &tool_id {
if let Some(inst) = self.registry.ensure_instance(old_id) {
inst.hide();
}
}
}
self.active_providers.insert(panel, tool_id.clone());
if let Some(inst) = self.registry.ensure_instance(&tool_id) {
inst.show();
if self.focus.panel == panel {
inst.focus_changed(true);
}
}
}
Command::FocusPanel(panel) => {
self.set_focus(panel);
}
Command::ShowMessage { msg, level } => {
let color = match level {
MessageLevel::Info => Color::Cyan,
MessageLevel::Warn => Color::Yellow,
MessageLevel::Error => Color::Red,
};
self.statusbar.message = Some((msg, color));
}
}
}
}

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// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use std::collections::HashMap;
use std::io;
use anyhow::Result;
use crossterm::event::{self};
use ratatui::{
backend::CrosstermBackend,
layout::{Constraint, Direction, Layout, Rect},
style::Color,
widgets::Widget,
Terminal,
};
use crate::builtin;
use crate::runtime::{
Capability, ModuleRegistry, PanelType, ProviderDesc, Registrar,
};
use crate::ui;
pub(crate) enum AppState {
Splash,
Main,
}
pub struct App {
pub(crate) state: AppState,
pub(crate) layout: ui::LayoutManager,
pub(crate) focus: ui::focus::FocusManager,
pub(crate) menubar: ui::menubar::Menubar,
pub(crate) statusbar: ui::statusbar::StatusBar,
pub(crate) splash: ui::splash::SplashScreen,
pub(crate) registry: ModuleRegistry,
/// Current active provider id per panel.
pub(crate) active_providers: HashMap<PanelType, String>,
}
impl App {
/// `App::new()`
///
/// App构造函数依次完成以下工作：
/// - 注册 `builtin providers`
/// - 初始化所有providers
pub fn new() -> Self {
let mut registry = ModuleRegistry::default();
// Register built-in providers
registry.register_provider(
ProviderDesc {
id: "filetree".into(),
name: "File Tree".into(),
panel: PanelType::Sidebar,
capabilities: vec![Capability::Render, Capability::HandleEvent],
},
Box::new(|| Box::new(builtin::filetree::FileTreeProvider::new())),
);
registry.register_provider(
ProviderDesc {
id: "editor".into(),
name: "Editor".into(),
panel: PanelType::Main,
capabilities: vec![Capability::Render, Capability::HandleEvent],
},
Box::new(|| Box::new(builtin::editor::EditorProvider::new())),
);
registry.register_provider(
ProviderDesc {
id: "terminal".into(),
name: "Terminal".into(),
panel: PanelType::Main,
capabilities: vec![Capability::Render, Capability::HandleEvent],
},
Box::new(|| Box::new(builtin::terminal::TerminalProvider::new())),
);
registry.register_provider(
ProviderDesc {
id: "agentchat".into(),
name: "Agent Chat".into(),
panel: PanelType::Agent,
capabilities: vec![Capability::Render, Capability::HandleEvent],
},
Box::new(|| Box::new(builtin::agentchat::AgentChatProvider::new())),
);
// Default active providers
let mut active_providers: HashMap<PanelType, String> = HashMap::new();
active_providers.insert(PanelType::Sidebar, "filetree".into());
active_providers.insert(PanelType::Main, "terminal".into());
active_providers.insert(PanelType::Agent, "agentchat".into());
// Ensure all default providers are instantiated
for id in active_providers.values() {
let _ = registry.ensure_instance(id);
}
Self {
state: AppState::Splash,
layout: ui::LayoutManager::default(),
focus: ui::focus::FocusManager::default(),
menubar: ui::menubar::Menubar::default(),
statusbar: ui::statusbar::StatusBar::default(),
splash: ui::splash::SplashScreen,
registry,
active_providers,
}
}
/// `App::run`
///
/// 事务处理循环：
/// - 更新状态栏
///
pub fn run(
&mut self,
terminal: &mut Terminal<CrosstermBackend<io::Stdout>>,
) -> Result<()> {
loop {
self.update_statusbar();
terminal.draw(|frame| self.render(frame.area(), frame.buffer_mut()))?;
if event::poll(std::time::Duration::from_millis(16))? {
let ev = event::read()?;
if self.handle_event(ev) {
break;
}
}
}
Ok(())
}
pub fn shutdown(&mut self) {
self.registry.shutdown_all();
}
pub(crate) fn update_statusbar(&mut self) {
// Pull state from the active Main provider if it's an editor
if let Some(id) = self.active_providers.get(&PanelType::Main) {
if let Some(inst) = self.registry.ensure_instance(id) {
if let Some(editor) =
inst.as_any().downcast_ref::<builtin::editor::EditorProvider>()
{
self.statusbar.filename = editor.filename().to_string();
self.statusbar.cursor_line = editor.cursor_line();
self.statusbar.cursor_col = editor.cursor_col();
if editor.is_modified() {
self.statusbar.filename.push_str(" [+]");
}
}
}
}
// Focus info
self.statusbar.focused_panel = match self.focus.panel {
PanelType::Sidebar => "Sidebar".into(),
PanelType::Main => "Main".into(),
PanelType::Agent => "Agent".into(),
};
}
pub(crate) fn render(&mut self, area: Rect, buf: &mut ratatui::buffer::Buffer) {
match self.state {
AppState::Splash => {
self.splash.render(area, buf);
}
AppState::Main => {
self.render_main(area, buf);
}
}
}
pub(crate) fn render_main(&mut self, area: Rect, buf: &mut ratatui::buffer::Buffer) {
let vertical = Layout::default()
.direction(Direction::Vertical)
.constraints([
Constraint::Length(1),
Constraint::Min(0),
Constraint::Length(1),
])
.split(area);
let menubar_area = vertical[0];
let body_area = vertical[1];
let status_area = vertical[2];
self.menubar.render(menubar_area, buf);
let panels = self.layout.compute(body_area);
let sidebar_title = match self.focus.panel {
PanelType::Sidebar => " Sidebar * ",
_ => " Sidebar ",
};
let main_title = match self.focus.panel {
PanelType::Main => " Main * ",
_ => " Main ",
};
let agent_title = match self.focus.panel {
PanelType::Agent => " Agent * ",
_ => " Agent ",
};
self.draw_panel_frame(panels.sidebar, buf, sidebar_title);
self.draw_panel_frame(panels.main, buf, main_title);
self.draw_panel_frame(panels.agent, buf, agent_title);
let sidebar_inner = inner_rect(panels.sidebar);
let main_inner = inner_rect(panels.main);
let agent_inner = inner_rect(panels.agent);
// Fill panel backgrounds
for inner in [sidebar_inner, main_inner, agent_inner] {
for y in inner.top()..inner.bottom() {
for x in inner.left()..inner.right() {
buf[(x, y)].set_bg(Color::Rgb(25, 25, 25));
}
}
}
self.render_provider(PanelType::Sidebar, sidebar_inner, buf);
self.render_provider(PanelType::Main, main_inner, buf);
self.render_provider(PanelType::Agent, agent_inner, buf);
self.statusbar.render(status_area, buf);
}
pub(crate) fn render_provider(
&mut self,
panel: PanelType,
area: Rect,
buf: &mut ratatui::buffer::Buffer,
) {
if let Some(id) = self.active_providers.get(&panel) {
if let Some(inst) = self.registry.ensure_instance(id) {
inst.render(area, buf);
}
}
}
pub(crate) fn draw_panel_frame(
&self,
area: Rect,
buf: &mut ratatui::buffer::Buffer,
title: &str,
) {
use ratatui::style::{Color, Style};
use ratatui::widgets::{Block, Borders};
let block = Block::default()
.title(title)
.borders(Borders::ALL)
.border_style(Style::default().fg(Color::DarkGray));
block.render(area, buf);
}
}
pub(crate) fn inner_rect(area: Rect) -> Rect {
Rect {
x: area.x.saturating_add(1),
y: area.y.saturating_add(1),
width: area.width.saturating_sub(2),
height: area.height.saturating_sub(2),
}
}

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// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use crossterm::event::{Event, KeyCode, KeyModifiers};
use crate::runtime::{EventResult, PanelType};
use super::App;
impl App {
pub(crate) fn handle_event(&mut self, ev: Event) -> bool {
if let Event::Key(key) = &ev {
if key.code == KeyCode::Char('q') && key.modifiers.contains(KeyModifiers::CONTROL) {
return true;
}
}
match self.state {
super::AppState::Splash => {
if let Event::Key(_) = ev {
self.state = super::AppState::Main;
}
false
}
super::AppState::Main => self.handle_main_event(ev),
}
}
pub(crate) fn handle_main_event(&mut self, ev: Event) -> bool {
// Menubar
if self.menubar.is_active() {
if self.menubar.handle_event(&ev) {
return false;
}
} else if let Event::Key(key) = &ev {
if key.modifiers.contains(KeyModifiers::ALT) {
if self.menubar.handle_event(&ev) {
return false;
}
}
}
// Focus shortcuts
if let Event::Key(key) = &ev {
if key.modifiers.contains(KeyModifiers::CONTROL) {
match key.code {
KeyCode::Char('j') => {
self.set_focus(PanelType::Sidebar);
return false;
}
KeyCode::Char('k') => {
self.set_focus(PanelType::Main);
return false;
}
KeyCode::Char('l') => {
self.set_focus(PanelType::Agent);
return false;
}
_ => {}
}
}
}
// Route to focused provider
let focused = self.focus.panel;
let commands = if let Some(id) = self.active_providers.get(&focused) {
if let Some(inst) = self.registry.ensure_instance(id) {
let (result, cmds) = inst.handle_event(ev.clone());
if matches!(result, EventResult::PassThrough) {
if let Event::Key(key) = &ev {
if key.modifiers.contains(KeyModifiers::ALT) {
let _ = self.menubar.handle_event(&ev);
}
}
}
cmds
} else {
Vec::new()
}
} else {
Vec::new()
};
for cmd in commands {
self.dispatch_command(cmd);
}
false
}
pub(crate) fn set_focus(&mut self, panel: PanelType) {
let old = self.focus.panel;
if old == panel {
return;
}
self.focus.focus_panel(panel);
// Notify old provider
if let Some(id) = self.active_providers.get(&old) {
if let Some(inst) = self.registry.ensure_instance(id) {
inst.focus_changed(false);
}
}
// Notify new provider
if let Some(id) = self.active_providers.get(&panel) {
if let Some(inst) = self.registry.ensure_instance(id) {
inst.focus_changed(true);
}
}
}
}

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// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
pub mod commands;
pub mod events;
pub mod core;
pub use core::App;
pub(crate) use core::AppState;

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// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use crate::runtime::{Command, EventResult, PanelProvider, Source};
use crossterm::event::{Event, KeyCode, KeyModifiers};
use ratatui::{

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// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use crate::builtin::agentchat::AgentChatProvider;
use crate::runtime::PanelProvider;
use crossterm::event::{Event, KeyCode, KeyEvent, KeyModifiers};

4
src/builtin/editor/mod.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use crate::runtime::{Command, EventResult, PanelProvider, Source};
use crossterm::event::{Event, KeyCode, KeyModifiers};
use ratatui::{

4
src/builtin/editor/tests.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use crate::builtin::editor::EditorProvider;
use crate::runtime::PanelProvider;
use crossterm::event::{Event, KeyCode, KeyEvent};

4
src/builtin/filetree/mod.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use std::fs;
use std::path::{Path, PathBuf};

4
src/builtin/filetree/tests.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use crate::builtin::filetree::FileTreeProvider;
use crate::runtime::PanelProvider;
use crossterm::event::{Event, KeyCode, KeyEvent};

4
src/builtin/mod.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
pub mod agentchat;
pub mod editor;
pub mod filetree;

4
src/builtin/tasktree/mod.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use crate::runtime::{Command, EventResult, PanelProvider, Source};
use crossterm::event::Event;
use ratatui::{

4
src/builtin/terminal/mod.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use crate::runtime::{Command, EventResult, PanelProvider, Source};
use crossterm::event::{Event, KeyCode};
use ratatui::{

4
src/builtin/terminal/tests.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use crate::builtin::terminal::TerminalProvider;
use crate::runtime::PanelProvider;
use crossterm::event::{Event, KeyCode, KeyEvent};

5
src/lib.rs
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@@ -1,4 +1,9 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
pub mod agent;
pub mod app;
pub mod builtin;
pub mod plugin;
pub mod runtime;

414
src/main.rs
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@@ -1,413 +1,39 @@
use std::collections::HashMap;
use std::io::{self, stdout};
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
/**
*
*/
use std::io::stdout;
use anyhow::Result;
// terminal library
use crossterm::{
event::{self, Event, KeyCode, KeyModifiers},
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
ExecutableCommand,
};
use ratatui::{
backend::CrosstermBackend,
layout::{Constraint, Direction, Layout, Rect},
style::Color,
widgets::Widget,
Terminal,
};
use everjoy::builtin;
use everjoy::runtime::{
Capability, Command, EventResult, ModuleRegistry, PanelType, ProviderDesc, Registrar,
};
use everjoy::ui;
enum AppState {
Splash,
Main,
}
struct App {
state: AppState,
layout: ui::LayoutManager,
focus: ui::focus::FocusManager,
menubar: ui::menubar::Menubar,
statusbar: ui::statusbar::StatusBar,
splash: ui::splash::SplashScreen,
registry: ModuleRegistry,
/// Current active provider id per panel.
active_providers: HashMap<PanelType, String>,
}
impl App {
fn new() -> Self {
let mut registry = ModuleRegistry::default();
// Register built-in providers
registry.register_provider(
ProviderDesc {
id: "filetree".into(),
name: "File Tree".into(),
panel: PanelType::Sidebar,
capabilities: vec![Capability::Render, Capability::HandleEvent],
},
Box::new(|| Box::new(builtin::filetree::FileTreeProvider::new())),
);
registry.register_provider(
ProviderDesc {
id: "editor".into(),
name: "Editor".into(),
panel: PanelType::Main,
capabilities: vec![Capability::Render, Capability::HandleEvent],
},
Box::new(|| Box::new(builtin::editor::EditorProvider::new())),
);
registry.register_provider(
ProviderDesc {
id: "terminal".into(),
name: "Terminal".into(),
panel: PanelType::Main,
capabilities: vec![Capability::Render, Capability::HandleEvent],
},
Box::new(|| Box::new(builtin::terminal::TerminalProvider::new())),
);
registry.register_provider(
ProviderDesc {
id: "agentchat".into(),
name: "Agent Chat".into(),
panel: PanelType::Agent,
capabilities: vec![Capability::Render, Capability::HandleEvent],
},
Box::new(|| Box::new(builtin::agentchat::AgentChatProvider::new())),
);
// Default active providers
let mut active_providers: HashMap<PanelType, String> = HashMap::new();
active_providers.insert(PanelType::Sidebar, "filetree".into());
active_providers.insert(PanelType::Main, "editor".into());
active_providers.insert(PanelType::Agent, "agentchat".into());
// Ensure all default providers are instantiated
for id in active_providers.values() {
let _ = registry.ensure_instance(id);
}
Self {
state: AppState::Splash,
layout: ui::LayoutManager::default(),
focus: ui::focus::FocusManager::default(),
menubar: ui::menubar::Menubar::default(),
statusbar: ui::statusbar::StatusBar::default(),
splash: ui::splash::SplashScreen,
registry,
active_providers,
}
}
fn run(&mut self, terminal: &mut Terminal<CrosstermBackend<io::Stdout>>) -> Result<()> {
loop {
self.update_statusbar();
terminal.draw(|frame| self.render(frame.area(), frame.buffer_mut()))?;
if event::poll(std::time::Duration::from_millis(16))? {
let ev = event::read()?;
if self.handle_event(ev) {
break;
}
}
}
Ok(())
}
fn update_statusbar(&mut self) {
// Pull state from the active Main provider if it's an editor
if let Some(id) = self.active_providers.get(&PanelType::Main) {
if let Some(inst) = self.registry.ensure_instance(id) {
if let Some(editor) = inst.as_any().downcast_ref::<builtin::editor::EditorProvider>() {
self.statusbar.filename = editor.filename().to_string();
self.statusbar.cursor_line = editor.cursor_line();
self.statusbar.cursor_col = editor.cursor_col();
if editor.is_modified() {
self.statusbar.filename.push_str(" [+]");
}
}
}
}
// Focus info
self.statusbar.focused_panel = match self.focus.panel {
PanelType::Sidebar => "Sidebar".into(),
PanelType::Main => "Main".into(),
PanelType::Agent => "Agent".into(),
};
}
fn render(&mut self, area: Rect, buf: &mut ratatui::buffer::Buffer) {
match self.state {
AppState::Splash => {
self.splash.render(area, buf);
}
AppState::Main => {
self.render_main(area, buf);
}
}
}
fn render_main(&mut self, area: Rect, buf: &mut ratatui::buffer::Buffer) {
let vertical = Layout::default()
.direction(Direction::Vertical)
.constraints([
Constraint::Length(1),
Constraint::Min(0),
Constraint::Length(1),
])
.split(area);
let menubar_area = vertical[0];
let body_area = vertical[1];
let status_area = vertical[2];
self.menubar.render(menubar_area, buf);
let panels = self.layout.compute(body_area);
let sidebar_title = match self.focus.panel {
PanelType::Sidebar => " Sidebar * ",
_ => " Sidebar ",
};
let main_title = match self.focus.panel {
PanelType::Main => " Main * ",
_ => " Main ",
};
let agent_title = match self.focus.panel {
PanelType::Agent => " Agent * ",
_ => " Agent ",
};
self.draw_panel_frame(panels.sidebar, buf, sidebar_title);
self.draw_panel_frame(panels.main, buf, main_title);
self.draw_panel_frame(panels.agent, buf, agent_title);
let sidebar_inner = inner_rect(panels.sidebar);
let main_inner = inner_rect(panels.main);
let agent_inner = inner_rect(panels.agent);
// Fill panel backgrounds
for inner in [sidebar_inner, main_inner, agent_inner] {
for y in inner.top()..inner.bottom() {
for x in inner.left()..inner.right() {
buf[(x, y)].set_bg(Color::Rgb(25, 25, 25));
}
}
}
self.render_provider(PanelType::Sidebar, sidebar_inner, buf);
self.render_provider(PanelType::Main, main_inner, buf);
self.render_provider(PanelType::Agent, agent_inner, buf);
self.statusbar.render(status_area, buf);
}
fn render_provider(&mut self, panel: PanelType, area: Rect, buf: &mut ratatui::buffer::Buffer) {
if let Some(id) = self.active_providers.get(&panel) {
if let Some(inst) = self.registry.ensure_instance(id) {
inst.render(area, buf);
}
}
}
fn draw_panel_frame(&self, area: Rect, buf: &mut ratatui::buffer::Buffer, title: &str) {
use ratatui::style::{Color, Style};
use ratatui::widgets::{Block, Borders};
let block = Block::default()
.title(title)
.borders(Borders::ALL)
.border_style(Style::default().fg(Color::DarkGray));
block.render(area, buf);
}
fn handle_event(&mut self, ev: Event) -> bool {
if let Event::Key(key) = &ev {
if key.code == KeyCode::Char('q') && key.modifiers.contains(KeyModifiers::CONTROL) {
return true;
}
}
match self.state {
AppState::Splash => {
if let Event::Key(_) = ev {
self.state = AppState::Main;
}
false
}
AppState::Main => self.handle_main_event(ev),
}
}
fn handle_main_event(&mut self, ev: Event) -> bool {
// Menubar
if self.menubar.is_active() {
if self.menubar.handle_event(&ev) {
return false;
}
} else if let Event::Key(key) = &ev {
if key.modifiers.contains(KeyModifiers::ALT) {
if self.menubar.handle_event(&ev) {
return false;
}
}
}
// Focus shortcuts
if let Event::Key(key) = &ev {
if key.modifiers.contains(KeyModifiers::CONTROL) {
match key.code {
KeyCode::Char('j') => {
self.set_focus(PanelType::Sidebar);
return false;
}
KeyCode::Char('k') => {
self.set_focus(PanelType::Main);
return false;
}
KeyCode::Char('l') => {
self.set_focus(PanelType::Agent);
return false;
}
_ => {}
}
}
}
// Route to focused provider
let focused = self.focus.panel;
let commands = if let Some(id) = self.active_providers.get(&focused) {
if let Some(inst) = self.registry.ensure_instance(id) {
let (result, cmds) = inst.handle_event(ev.clone());
if matches!(result, EventResult::PassThrough) {
if let Event::Key(key) = &ev {
if key.modifiers.contains(KeyModifiers::ALT) {
let _ = self.menubar.handle_event(&ev);
}
}
}
cmds
} else {
Vec::new()
}
} else {
Vec::new()
};
for cmd in commands {
self.dispatch_command(cmd);
}
false
}
fn set_focus(&mut self, panel: PanelType) {
let old = self.focus.panel;
if old == panel {
return;
}
self.focus.focus_panel(panel);
// Notify old provider
if let Some(id) = self.active_providers.get(&old) {
if let Some(inst) = self.registry.ensure_instance(id) {
inst.focus_changed(false);
}
}
// Notify new provider
if let Some(id) = self.active_providers.get(&panel) {
if let Some(inst) = self.registry.ensure_instance(id) {
inst.focus_changed(true);
}
}
}
fn dispatch_command(&mut self, cmd: Command) {
match cmd {
Command::Present {
panel,
source,
mime_hint,
} => {
let guessed = source.mime_hint();
let mime_str = mime_hint.as_deref().or(guessed.as_deref());
if let Some((id, _score)) =
self.registry.find_best_provider(panel, &source, mime_str)
{
// Hide current provider on this panel if different
if let Some(old_id) = self.active_providers.get(&panel) {
if old_id != &id {
if let Some(inst) = self.registry.ensure_instance(old_id) {
inst.hide();
}
}
}
self.active_providers.insert(panel, id.clone());
if let Some(inst) = self.registry.ensure_instance(&id) {
inst.show();
if self.focus.panel == panel {
inst.focus_changed(true);
}
}
}
}
Command::Launch { panel, tool_id, .. } => {
// Direct dispatch by provider id
if let Some(old_id) = self.active_providers.get(&panel) {
if old_id != &tool_id {
if let Some(inst) = self.registry.ensure_instance(old_id) {
inst.hide();
}
}
}
self.active_providers.insert(panel, tool_id.clone());
if let Some(inst) = self.registry.ensure_instance(&tool_id) {
inst.show();
if self.focus.panel == panel {
inst.focus_changed(true);
}
}
}
Command::FocusPanel(panel) => {
self.set_focus(panel);
}
Command::ShowMessage { msg, level } => {
let color = match level {
everjoy::runtime::MessageLevel::Info => Color::Cyan,
everjoy::runtime::MessageLevel::Warn => Color::Yellow,
everjoy::runtime::MessageLevel::Error => Color::Red,
};
self.statusbar.message = Some((msg, color));
}
}
}
}
fn inner_rect(area: Rect) -> Rect {
Rect {
x: area.x.saturating_add(1),
y: area.y.saturating_add(1),
width: area.width.saturating_sub(2),
height: area.height.saturating_sub(2),
}
}
// TUI library
use ratatui::{backend::CrosstermBackend, Terminal};
fn main() -> Result<()> {
// Passthrough all input and output to application.
enable_raw_mode()?;
// Goto a new Page.
stdout().execute(EnterAlternateScreen)?;
let mut terminal = Terminal::new(CrosstermBackend::new(stdout()))?;
let mut app = App::new();
// Launch app layer
let mut app = everjoy::app::App::new();
let result = app.run(&mut terminal);
// Shutdown all providers before exit
app.registry.shutdown_all();
app.shutdown();
// Recover users' previous environment.
disable_raw_mode()?;
stdout().execute(LeaveAlternateScreen)?;
result

4
src/plugin/loader.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use std::path::{Path, PathBuf};
/// Loads external plugins (.wasm, .so, .dll).

4
src/plugin/mod.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
pub mod loader;
pub mod panic;
pub mod surface;

4
src/plugin/panic.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
/// Isolates panics from external plugins so they don't crash the runtime.
pub fn catch_plugin_panic<F, R>(plugin_id: &str, f: F) -> Option<R>
where

4
src/plugin/surface.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
/// Cell grid for external plugin rendering.
/// Runtime allocates, plugin borrows during render() call.
#[repr(C)]

4
src/plugin/translator.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
/// Translates C-ABI calls to Rust trait objects.
/// Wraps external plugins into Runtime-compatible types.
pub struct Translator;

4
src/runtime/ctx.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
//! ProviderCtx has been removed in favor of the Command pattern.
//! Providers return Commands from handle_event() instead of calling
//! into the system via a context trait.

4
src/runtime/lifecycle.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
/// Manages provider lifecycle: init, hide, show, shutdown.
pub struct LifecycleManager;

4
src/runtime/mod.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
pub mod ctx;
pub mod lifecycle;
pub mod registry;

4
src/runtime/registry.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use std::collections::HashMap;
use ratatui::{buffer::Buffer, layout::Rect};

4
src/runtime/traits.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use ratatui::{buffer::Buffer, layout::Rect};
use std::collections::HashMap;
use std::path::PathBuf;

4
src/ui/focus.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use crate::runtime::PanelType;
/// Manages focus state across panels and widgets.

4
src/ui/layout.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use ratatui::layout::{Constraint, Direction, Layout, Rect};
/// Manages panel proportions and handles drag-to-resize.

4
src/ui/menubar.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use crossterm::event::{Event, KeyCode, KeyModifiers};
use ratatui::{
buffer::Buffer,

4
src/ui/mod.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
pub mod focus;
pub mod layout;
pub mod menubar;

4
src/ui/router.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use crossterm::event::Event;
/// Routes input events through the 3-layer system:

4
src/ui/scheduler.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use ratatui::{backend::Backend, Frame, Terminal};
/// Schedules and executes the per-frame render.

6
src/ui/splash.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use ratatui::{
buffer::Buffer,
layout::{Alignment, Constraint, Direction, Layout, Rect},
@@ -64,7 +68,7 @@ impl Widget for &SplashScreen {
subtitle.render(vertical[3], buf);
// Version
let version = Paragraph::new("v0.1.0 — for Hoshu Chiu & Everjoy Chiu 🐕")
let version = Paragraph::new("v0.1.0 — for Hoshu Chiu & Hochanglo Chiu 🐕")
.alignment(Alignment::Center)
.style(Style::default().fg(Color::Rgb(120, 110, 100)));
version.render(vertical[4], buf);

4
src/ui/statusbar.rs
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@@ -1,3 +1,7 @@
// Copyright (c) 2026 Hoshu Chiu, Hochanglo Chiu 🐕, and The Goodest Boy/Girl
// SPDX-License-Identifier: MIT OR Apache-2.0
// Everjoy loves treats, walks, and clean Rust code.
use ratatui::{
buffer::Buffer,
layout::Rect,