galactic-engineering

name	galactic-engineering
description	Applies Galactic engineering rules for work in the galactic-ide repository. Use when implementing, reviewing, or refactoring repo code and you need the canonical standards for testing, versioning, React/Tailwind conventions, toasts, storage, OS-aware logic, and git-service boundaries.
allowed-tools	Read, Grep, Glob, Write, Edit

Galactic Engineering

Apply these conventions when working on code in the galactic-ide repository.

• Apply the testing and versioning rules to all feature work.
• Apply the React/TypeScript/Tailwind rules when editing renderer code in src/.

---

Repository-Wide Testing Requirement (GLOBAL)

• For every new feature or changed feature, add or update unit tests that verify expected behavior.
• Include at least one edge case or failure-path test for changed behavior.
• A feature is not complete until the relevant unit tests are passing locally.
• Exception: pure documentation/content updates with no runtime behavior change do not require tests.

---

Repository-Wide Analytics Requirement (GLOBAL)

• For every new user-facing feature or meaningful workflow change, add or update product analytics that answer adoption, usage, success, and failure questions for that feature.
• Keep analytics privacy-safe and low-cardinality: never capture secrets, filesystem paths, terminal input/output, raw commands, raw errors, tokens, or user-authored content.
• Prefer typed analytics event names and small wrapper helpers that mirror existing Galactic patterns; add tests for new analytics wrappers and payload-shaping helpers.
• If PostHog dashboards or insights are requested, create them only after the relevant events exist in the PostHog schema; do not create empty placeholder dashboards.

---

Repository-Wide Versioning Requirement (GLOBAL)

• For a given feature branch, bump the app version only once for the same feature.
• Do not repeatedly increment version for follow-up commits that are part of the same feature branch scope.

---

File Structure Rules

NEVER:

• Create index.ts or index.tsx files
• Use deep relative imports (../../../components/...)
• Mix logic, UI, and styling in the same file

ALWAYS:

• Import directly into component files
• Use path aliases (@/, @components/, @pages/, @styles/)
• Structure each component with .tsx plus colocated hooks/utilities only
• Follow the Single Responsibility Principle (SRP)

---

File Size Rules

HARD LIMIT:

• No file should exceed ~140 lines of code
• Applies to both new and existing files; if your edits would push a file past ~140 lines, split it before finishing.

If a file approaches 140 lines, you MUST:

• Split logic into custom hooks or utilities
• Break UI into smaller sub-components
• Separate responsibilities strictly by SRP

A file larger than 140 lines is considered an architectural smell.

---

Styling Rules (CRITICAL)

• Use Tailwind utilities and shadcn variants for all visual styling; avoid inline style except for CSS variables.
• Prefer gap for spacing between siblings; avoid margin for layout. Use padding only for container interior spacing.
• Avoid arbitrary pixel values. Stick to the Tailwind scale (rem-based). If a token is missing, request it rather than hard-coding.
• Keep styling inside className via cn(...); do not use template string concatenation.
• Add custom CSS only when Tailwind/shadcn cannot express a requirement; use design tokens and CSS variables when doing so.

Shadcn UI Components

• Prefer components from @/components/ui over raw HTML when available.
• Use provided variant, size, and asChild props instead of ad-hoc classes.
• Keep layout simple: flex/grid with Tailwind gap, items, justify, rounded, shadow, etc.

Tooltips (CRITICAL)

• ONLY use shadcn Tooltip:

import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from "@/components/ui/tooltip";

<TooltipProvider>
  <Tooltip>
    <TooltipTrigger asChild>
      <Button size="icon" variant="ghost">?</Button>
    </TooltipTrigger>
    <TooltipContent side="top">Helpful text</TooltipContent>
  </Tooltip>
</TooltipProvider>

Icons

• Use lucide-react only; no custom SVGs.
• Size icons with Tailwind classes (className="h-4 w-4"). No inline width/height.

Toasts (CRITICAL)

• ALWAYS use useAppToast from @/hooks/use-app-toast in feature code.
• NEVER import sonner, @/hooks/use-toast, or @/components/ui/use-toast directly outside toast infrastructure files.
• Use error(...) for standard failures; shared error toasts auto-dismiss after 5 seconds unless an explicit override is required.
• Use info(...) for non-error informational messages and success(...) for standard completion messages.
• Use loading(...) for long-running async flows; update the same toast during progress and finish it with success(...), error(...), info(...), or dismiss().
• Only use persistent toasts when product behavior requires it, and set duration: Infinity explicitly.

---

TypeScript Rules

• Define an interface for all component props; use type for unions/utility shapes.
• Export interfaces when used elsewhere.
• Avoid switch statements for mapping; prefer object maps:

const statusLabels: Record<Status, string> = { loading: "Loading...", success: "Done!", error: "Failed" };
const getLabel = (status: Status) => statusLabels[status] ?? "Unknown";

For JSX content, use ReactNode maps:

const statusContent: Record<Status, ReactNode> = {
  loading: <Spinner />,
  success: <p className="text-green-600">Done!</p>,
  error: <p className="text-destructive">Failed</p>,
};

---

Import Order

1. React imports
2. Third-party libraries (shadcn UI, lucide-react, clsx/cn)
3. Internal imports (components, hooks, connectors, types)
4. Styles (rare) — always last

---

Naming Conventions

• Components: PascalCase (ChatInput)
• Files: PascalCase (ChatInput.tsx)
• Directories: PascalCase (ChatInput/)
• Custom CSS classes: kebab-case (chat-input-wrapper)
• Functions: camelCase; Event handlers: handleX; Callback props: onX; Interfaces: PascalCase.

---

Path Aliases

Use configured aliases instead of relative imports.

import { Button } from "@/components/ui/button";
import { useAuth } from "@/hooks/use-auth";

---

Local Storage & Persistence

NEVER:

• Access localStorage directly inside components/effects.
• Store secrets, tokens, or large payloads in localStorage.
• Assume window exists (SSR/Electron safety).

ALWAYS:

• Keep persistence helpers in @/services/* or dedicated stores; expose typed methods (load, save, clear) and reuse namespaced keys (e.g., galactic-ide:<feature>).
• Guard access with typeof window !== "undefined" and wrap parse/stringify in try/catch, returning safe defaults on failure.
• Validate stored shapes (zod or type guards) before use and drop invalid records instead of throwing.
• Emit and respond to custom events (e.g., "galactic-projects-updated") when cross-tab sync matters.
• Prefer transient UI state in React/Zustand; persist only what must survive reloads.

---

Platform & OS-Aware Logic (Windows/macOS/Linux)

• Centralize OS detection/helpers in @/services/os (and sibling services); components should consume normalized values, not query the platform directly.
• Avoid scattering process.platform/navigator checks; expose a helper returning windows | macos | linux | unknown and branch via object maps instead of switch/if chains.
• Let Electron/main handle filesystem dialogs, path normalization, and command construction; call through window.electronAPI or service wrappers rather than building OS-specific paths/CLI strings in the renderer.
• Prefer capability checks ("can open external editor", "supports notifications") over OS name checks; always include a safe fallback for unknown.
• Keep cross-OS commands declarative (object map per OS) and avoid shell-specific syntax; ensure Windows paths/commands are quoted and use argument arrays where possible to prevent quoting bugs.

---

Git Operations

NEVER:

• Shell out to git directly from components/hooks.
• Assume POSIX-only paths or shells when building git commands.

ALWAYS:

• Route git work through @/services/git and window.electronAPI so the main process handles path/command differences across Windows/macOS/Linux.
• Validate inputs (projectPath, branch) before calling; return typed { success, error } or arrays and handle "not a git repo" gracefully.
• Keep operations async and non-blocking; surface loading/progress/error states in the UI without freezing rendering.
• For new git capabilities, extend the service/main layer first, add defensive logging, and prefer command arrays over concatenated strings to avoid quoting issues.

---

Code Hygiene

• Add comments only when needed—for rationale, invariants, tricky edge cases, or security concerns. Never comment self-explanatory code.
• When finishing a feature, review for unused code introduced during development and remove it before considering the work done.

---

Component Example

import { useState } from "react";
import { Send } from "lucide-react";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { cn } from "@/lib/utils";

interface ChatInputProps {
  onSend: (message: string) => void;
  disabled?: boolean;
}

export function ChatInput({ onSend, disabled }: ChatInputProps) {
  const [value, setValue] = useState("");

  const handleSubmit = (e: React.FormEvent) => {
    e.preventDefault();
    if (!value.trim()) return;
    onSend(value.trim());
    setValue("");
  };

  return (
    <form onSubmit={handleSubmit} className={cn("flex items-center gap-2 rounded-md border bg-card/70 p-3", disabled && "opacity-60 pointer-events-none")}> 
      <Input
        value={value}
        onChange={(e) => setValue(e.target.value)}
        placeholder="Type a message..."
        className="flex-1"
      />
      <Button type="submit" size="icon" variant="secondary">
        <Send className="h-4 w-4" />
      </Button>
    </form>
  );
}