chore: implement checkhealth status messages

lua/coderabbit/health.lua

@@ -0,0 +1,62 @@
+local M = {}
+
+function M.check()
+  vim.health.start("coderabbit.nvim")
+
+  -- Neovim version
+  if vim.fn.has("nvim-0.10") == 1 then
+    vim.health.ok("Neovim >= 0.10")
+  else
+    vim.health.error("Neovim >= 0.10 required")
+  end
+
+  -- Configuration
+  local config = require("coderabbit.config")
+  local configured = config._current ~= nil
+
+  if configured then
+    vim.health.ok("Plugin configured")
+  else
+    vim.health.warn("setup() has not been called yet", {
+      'Add require("coderabbit").setup({}) to your config',
+    })
+  end
+
+  -- CLI binary
+  local cfg = config.get()
+  local binary = cfg.cli.binary
+
+  if vim.fn.executable(binary) == 1 then
+    vim.health.ok("CLI found: " .. binary)
+
+    -- CLI version
+    local version = vim.fn.system({ binary, "--version" })
+    version = vim.trim(version)
+    if vim.v.shell_error == 0 and version ~= "" then
+      vim.health.ok("CLI version: " .. version)
+    else
+      vim.health.warn("Could not determine CLI version")
+    end
+
+    -- Authentication
+    local auth_raw = vim.fn.system({ binary, "auth", "status", "--agent" })
+    if vim.v.shell_error == 0 then
+      local ok, auth = pcall(vim.json.decode, auth_raw)
+      if ok and auth.authenticated then
+        local user = auth.user and auth.user.username or "unknown"
+        local org = auth.currentOrg and auth.currentOrg.name or "none"
+        vim.health.ok("Authenticated as " .. user .. " (org: " .. org .. ")")
+      else
+        vim.health.warn("Not authenticated", { "Run: " .. binary .. " auth login" })
+      end
+    else
+      vim.health.warn("Could not check auth status", { "Run: " .. binary .. " auth login" })
+    end
+  else
+    vim.health.error("CLI not found: " .. binary, {
+      "Install with: curl -fsSL https://cli.coderabbit.ai/install.sh | sh",
+    })
+  end
+end
+
+return M