fix(ci): simplify golangci-lint config and update README

- Remove all invalid config fields from .golangci.yml
- Add CI status badge to README
- Remove redundant tagline (already in description)

Author: jadercorrea

.golangci.yml

@@ -1,11 +1,5 @@
 run:
   timeout: 5m
-  tests: true
-  skip-dirs-use-default: true
-
-output:
-  formats:
-    - format: colored-line-number
 
 linters:
   enable:
@@ -15,29 +9,13 @@ linters:
     - ineffassign
     - staticcheck
     - unused
-  disable:
-    - structcheck
-    - varcheck
-    - deadcode
-
-linters-settings:
-  errcheck:
-    check-blank: false
-    exclude-functions:
-      - fmt.Fprintf
-      - fmt.Fprintln
-      - (*os.File).Close
-      - (*os.File).Sync
 
 issues:
   exclude-rules:
     - path: _test\.go
       linters:
         - errcheck
         - unused
-    - path: (vendor|docs|ml)/
-      linters:
-        - all
     - text: "Error return value is not checked"
       linters:
         - errcheck

README.md

@@ -1,7 +1,6 @@
 # 🐺 Chuchu
 
-**An affordable, TDD-first AI coding assistant for Neovim**
-
+[![CI](https://github.com/jadercorrea/chuchu/actions/workflows/ci.yml/badge.svg)](https://github.com/jadercorrea/chuchu/actions/workflows/ci.yml)
 [![Go Version](https://img.shields.io/github/go-mod/go-version/jadercorrea/chuchu)](go.mod)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](LICENSE)
 [![GitHub Issues](https://img.shields.io/github/issues/jadercorrea/chuchu)](https://github.com/jadercorrea/chuchu/issues)