Add AI inline completion via minuet + OpenCode Go

Configure minuet-ai.nvim with the OpenCode Go chat completions endpoint
(deepseek-v4-flash, thinking disabled) and wire it into blink.cmp as a
completion source with manual <A-y> trigger.

dot_config/nvim/lua/plugins/minuet.lua

@@ -0,0 +1,47 @@
+vim.pack.add({
+  { src = "https://github.com/milanglacier/minuet-ai.nvim" },
+})
+
+local function opencode_go_api_key()
+  local ok, lines = pcall(vim.fn.readfile, vim.fn.expand("~/.local/share/opencode/auth.json"))
+  if not ok then
+    return nil
+  end
+  local ok_decode, auth = pcall(vim.fn.json_decode, table.concat(lines, "\n"))
+  if not ok_decode or not auth["opencode-go"] or not auth["opencode-go"].key then
+    return nil
+  end
+  return auth["opencode-go"].key
+end
+
+local function setup_minuet()
+  pcall(require("minuet").setup, {
+    provider = "openai_compatible",
+    request_timeout = 2.5,
+    throttle = 1500,
+    debounce = 600,
+    provider_options = {
+      openai_compatible = {
+        api_key = opencode_go_api_key,
+        end_point = "https://opencode.ai/zen/go/v1/chat/completions",
+        model = "deepseek-v4-flash",
+        name = "Opencode",
+        optional = {
+          max_tokens = 56,
+          top_p = 0.9,
+          thinking = { type = "disabled" },
+        },
+      },
+    },
+  })
+end
+
+setup_minuet()
+
+vim.api.nvim_create_autocmd("PackChanged", {
+  callback = function(ev)
+    if ev.data.spec.name == "minuet-ai.nvim" then
+      setup_minuet()
+    end
+  end,
+})