(Try to) support taskfile.dev for building

GNU Make syntax gives anyone a huge headache

Signed-off-by: Shin'ya Minazuki <shinyoukai@laidback.moe>

.gitignore

@@ -127,6 +127,7 @@ prime/
 
 # Emacs
 \#*\#
+*~
 
 # Vim
 *.sw*

Taskfile.yml

@@ -0,0 +1,63 @@
+# Copyright (C) 2026 Cocoa Developers
+# SPDX-License-Identifier: CDDL-1.0
+# https://taskfile.dev
+
+version: '3'
+
+vars:
+  MAKE_VERSION:
+    sh: task --version
+  PROJECT_NAME: "Cocoa"
+  VERSION:
+    sh: git describe --tags
+    
+tasks:
+  backend:
+    desc: "Build backend for {{.PROJECT_NAME}}"
+    internal: true
+    cmds:
+      - go generate -tags "{{.TAGS}}" ./...
+      - go build -v -ldflags "-s -w -X main.Version={{.VERSION}} -X main.MakeVersion='Task {{.MAKE_VERSION}}' -X main.Tags={{.TAGS}}" -tags "{{.TAGS}}" -o cocoa
+    vars:
+      TAGS: "bindata"
+  build:
+    desc: "Build {{.PROJECT_NAME}}"
+    cmds:
+      - task: frontend
+      - task: backend
+  clean:
+    desc: "Clean up generated artifacts"
+    cmds:
+      - rm -f {{.EXE}}
+      - rm -f modules/migration/bindata.*
+      - rm -f modules/public/bindata.*
+      - rm -f modules/options/bindata.*
+      - rm -f modules/templates/bindata.*
+  clean-all:
+    desc: "Remove everything (implies clean)"
+    cmds:
+      - task: clean
+      - rm -rf node_modules
+      - rm -rf public/assets/css
+      - rm -rf public/assets/fonts
+      - rm -rf public/assets/js
+  default:
+    cmds:
+      - task -l
+    silent: true
+  frontend:
+    desc: "Build frontend for {{.PROJECT_NAME}}"
+    internal: true
+    cmds:
+      - pnpm install --frozen-lockfile
+      - pnpm exec webpack --disable-interpret
+    env:
+      BROWSERSLIST_IGNORE_OLD_DATA: "true"
+      NODE_ENV: "production"
+    sources:
+      - web_src/css/*.css
+      - web_src/js/*.js
+    generates:
+      - public/assets/css/*.css
+      - public/assets/fonts/*
+      - public/assets/js/*.js