chore: add mise.toml for tool versions and tasks, thin Makefile shim

mise.toml

@@ -0,0 +1,57 @@
+[tools]
+go = "1.26.2"
+node = "24.14.0"
+npm = "latest"
+
+[env]
+AUTH_TOKEN = "devtoken"
+PORT = "8080"
+DB_PATH = "wotra.db"
+TZ = "UTC"
+
+[tasks.build]
+description = "Build production single binary (web + Go)"
+depends = ["build:web", "build:go"]
+
+[tasks."build:web"]
+description = "Build Svelte frontend"
+dir = "web"
+run = "npm run build"
+
+[tasks."build:go"]
+description = "Build Go binary with embedded web assets"
+run = "go build -tags production -o wotra ./cmd/wotra"
+
+[tasks.dev]
+description = "Start Go API and Vite dev server concurrently"
+run = """
+echo "Go API:  http://localhost:${PORT}"
+echo "Vite UI: http://localhost:5173"
+mise run dev:api & mise run dev:ui
+wait
+"""
+
+[tasks."dev:api"]
+description = "Start Go API server"
+run = "go run ./cmd/wotra"
+
+[tasks."dev:ui"]
+description = "Start Vite dev server"
+dir = "web"
+run = "npm run dev"
+
+[tasks.test]
+description = "Run all Go tests"
+run = "go test ./..."
+
+[tasks.install]
+description = "Install frontend npm dependencies"
+dir = "web"
+run = "npm install"
+
+[tasks.clean]
+description = "Remove build artifacts"
+run = """
+rm -f wotra
+rm -rf web/build web/.svelte-kit
+"""