从Odoo17开始，社区版原生支持以PWA方式运行；那么在一些项目中免不了要对其进行一些自定义；
修改点如下

在controllers下添加webmanifest.py

# -*- coding: utf-8 -*-

import base64
import json
import mimetypes

from odoo import http
from odoo.exceptions import AccessError
from odoo.http import request
from odoo.tools import ustr, file_open
from odoo.addons.web.controllers import webmanifest


class WebManifest(webmanifest.WebManifest):

    @http.route('/web/manifest.webmanifest', type='http', auth='public', methods=['GET'])
    def webmanifest(self):
        """ Returns a WebManifest describing the metadata associated with a web application.
        Using this metadata, user agents can provide developers with means to create user
        experiences that are more comparable to that of a native application.
        """
        web_app_name = request.env['ir.config_parameter'].sudo().get_param('web.web_app_name', 'Odoo')
        manifest = {
            # 'name': web_app_name,
            'name': '大大大',
            'scope': '/web',
            'start_url': '/web',
            'display': 'standalone',
            # 'background_color': '#714B67',
            # 'theme_color': '#714B67',
            'background_color': 'red',
            'theme_color': '#065279',
            'prefer_related_applications': False,
        }
        icon_sizes = ['192x192', '512x512']
        manifest['icons'] = [{
            'src': '/web/static/img/odoo-icon-%s.png' % size,
            'sizes': size,
            'type': 'image/png',
        } for size in icon_sizes]
        manifest['shortcuts'] = self._get_shortcuts()
        body = json.dumps(manifest, default=ustr)
        response = request.make_response(body, [
            ('Content-Type', 'application/manifest+json'),
        ])
        return response

因为odoo里面还定死了主题颜色，需要去掉它

PWA配置引用

<?xml version="1.0" encoding="UTF-8"?>

<odoo>
    <!-- 修改针对PWA定死的标题栏主题色 -->
    <template id="webclient_bootstrap" name="Web Client" inherit_id="web.webclient_bootstrap">
        <xpath expr="//meta[@name='theme-color']" position="attributes">
            <attribute name="content">#065279</attribute>
        </xpath>
    </template>
</odoo>

最终效果