Delete CONTRIBUTING.md

Signed-off-by: Shuke <272197458+ShukeBta@users.noreply.github.com>

CONTRIBUTING.md

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-# Contributing to MediaStationGo
-
-Thanks for taking the time to contribute! This document is intentionally short —
-prefer asking in an issue/PR over re-reading rules.
-
-## Local development
-
-```bash
-# Backend (Go 1.25+ required)
-make dev               # MEDIASTATION_APP_DEBUG=true go run ./cmd/server
-
-# Frontend (Node 20+ required)
-make dev-web           # vite dev server on :3000, proxies /api -> :8080
-```
-
-Default admin: `admin / admin123` — change it after first login.
-
-## Code style
-
-- **Go**: keep packages small, services thin, errors wrapped with `%w`. Run
-  `go vet ./...` and `go test ./...` before pushing.
-- **TypeScript**: `strict: true` is on. Prefer `interface` over `type` for
-  object shapes. Components live next to their page when not reused.
-- Comments should explain *why*, not *what*. Avoid emoji in code.
-
-## Commit / PR conventions
-
-- Conventional commits encouraged: `feat:`, `fix:`, `docs:`, `refactor:`, `chore:`.
-- One concern per PR. Update the README/docs when behaviour changes.
-- CI must pass: `go vet`, `go test`, frontend `tsc -b && vite build`.
-
-## Issue triage
-
-When filing a bug please include:
-
-1. The steps to reproduce.
-2. The expected and actual behaviour.
-3. Logs from `docker logs mediastation-go` (or stdout if running locally).
-4. Your deployment context (NAS model, OS, Docker version).
-
-Thanks for keeping the project healthy!