recent window layout issue with edgy.nvim

[disrupted]

Description

there was a regression introduced in #431 that affects plugin interop. in my case edgy.nvim needs to know the buffer filetype at the time when the window is created.

When I revert this commit, edgy.nvim behaves normally again.

Also worth noting, even with the commit reverted, the example from that PR still works for me.

after/ftplugin/opencode_output.lua

vim.wo[0][0].conceallevel = 2

Steps to reproduce

1. launch nvim
2. open the opencode.nvim side-panel
3. notice how the window layout looks messed up

Environment

• Neovim version: v0.13.0-dev-1693+g0f7538c4ab
• OpenCode version: 1.18.31
• opencode.nvim version or commit: 471650b (main)
• OS: macOS 27.0

Configuration

OpenCode configuration

irrelevant for this issue

opencode.nvim configuration

require('edgy').setup({
  animate = { enabled = false },
  options = { right = { size = 78 } },
  right = {
      {
          ft = 'opencode_output',
      },
      {
          ft = 'opencode',
          size = { height = 10 },
      },
  },
})

require('opencode').setup({})

Logs and screenshots

window layout issue

with the commit reverted

Checklist

• I have searched existing issues.
• I have included all relevant details.
• I have removed sensitive information from configs and logs.