claudette copilot-instructions.md

Claudette Repository Instructions

Claudette is a cross-platform desktop orchestrator for parallel Claude Code agents. It uses a Tauri 2 Rust backend, a React/TypeScript frontend, SQLite via rusqlite, Tokio process management, git worktrees, xterm.js terminals, Lua plugins, and a local CLI that talks to the running GUI over IPC.

Follow the existing architecture. Core behavior belongs in the claudette crate under src/. src-tauri/src/commands/ should stay thin Tauri wrappers. Shared data types belong in src/model/ and must derive Serialize. Frontend state lives in Zustand slices under src/ui/src/stores/slices/, not ad hoc globals.

Treat regressions as the main risk. Before changing behavior, identify the current contract: persisted DB fields, Tauri command payloads, CLI output, plugin manifests, settings keys, localized strings, terminal/session semantics, worktree behavior, and visible UI workflows. Do not remove, rename, or silently reinterpret any of these unless the task explicitly asks for that change.

If a behavior change is intentional, call it out plainly in the PR summary or review response and add/update tests that pin the new behavior. If the change was incidental, preserve compatibility instead.

Do not fix type, lint, or test failures by deleting tests, removing UI controls, dropping state fields, weakening assertions, or broadening types. Fix the underlying mismatch and keep existing user-visible capabilities intact.

Control god files. Do not make already-large files the default destination for new behavior. Prefer a focused module, helper, slice, hook, or component near the owning feature, then wire it through the existing entry point. Be especially cautious with src/diff.rs, src/git.rs, src/plugin.rs, src/mcp.rs, src/mcp_supervisor.rs, the largest siblings of the recently-split src-tauri/src/commands/agent_backends/ directory (gateway_translate.rs, runtime_dispatch.rs, discovery.rs, config.rs), src-tauri/src/commands/*, src-tauri/src/voice.rs, src-tauri/src/ipc.rs, src/ui/src/components/sidebar/Sidebar.tsx, src/ui/src/components/chat/ChatPanel.tsx, src/ui/src/components/chat/ChatInputArea.tsx, src/ui/src/components/terminal/TerminalPanel.tsx, src/ui/src/services/tauri.ts, and large CSS modules.

When touching a god file, keep the diff surgical or extract cohesive behavior first. New code should reduce or isolate complexity, not add another unrelated responsibility.

For subprocess spawns (agent, MCP, setup scripts), use crate::env::enriched_env().apply(&mut cmd) to forward the user's captured shell environment. The capture happens at app launch via prewarm_shell_env in src/env.rs and merges into the env-provider dispatcher at precedence 0 (direnv / mise / dotenv / nix-devshell layer on top). enriched_path() is kept as a backwards-compat accessor returning just PATH — new code should prefer enriched_env() to inherit the full set.

Use the repo's tools. Rust CI expects cargo fmt --all --check, cargo clippy -p claudette -p claudette-server -p claudette-cli --all-targets --all-features with RUSTFLAGS=-Dwarnings, and cargo test --all-features. Frontend CI expects cd src/ui && bun install --frozen-lockfile, bunx tsc --noEmit, bun run lint:css, bun run build, and bun run test.

Always run cd src/ui && bunx tsc -b after TypeScript changes. Vitest uses esbuild and does not type-check the project.

Never edit, rename, or delete released SQL migrations under src/migrations/*.sql. Add a new forward migration and register it in src/migrations/mod.rs.

Use bun, not npm. Keep TypeScript strict and avoid any. Keep Rust cross-platform with explicit #[cfg(...)] gates for OS-specific code.

When spawning subprocesses, never use a raw std::process::Command::new / tokio::process::Command::new. On Windows a GUI process spawns a child with no CREATE_NO_WINDOW flag and a blank cmd.exe window flashes on screen — a bug invisible in dev builds and only seen in release. Use the claudette::process command helper, or CommandWindowExt::no_console_window(). Flag any raw Command::new in review as a Windows console-flash regression unless it is a deliberate user-facing terminal launch using .new_console_window().