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+# Neovim Vue Language Server Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Enable current Vue 3 language-server support while preserving `ts_ls` behavior for JavaScript and TypeScript projects.
+
+**Architecture:** Neovim continues to run `ts_ls` for JavaScript and TypeScript. The nvim-lspconfig `vue_ls` configuration runs only for Vue single-file components and forwards TypeScript requests to the existing TypeScript client.
+
+**Tech Stack:** Neovim 0.12 native LSP API, nvim-lspconfig, mason.nvim, mason-lspconfig.nvim, Vue Language Server 3
+
+---
+
+### Task 1: Enable Vue Language Server
+
+**Files:**
+- Modify: `nvim/lua/tracer/plugins/lspconfig.lua:57-63`
+
+- [x] **Step 1: Run the pre-change assertion**
+
+Run:
+
+```bash
+nvim --headless \
+  "+lua assert(not vim.lsp.is_enabled('vue_ls'), 'vue_ls was unexpectedly already enabled')" \
+  +qa
+```
+
+Expected: exit status 0, proving the new server is not enabled before implementation.
+
+- [x] **Step 2: Enable the server**
+
+Add the following line after `vim.lsp.enable("ts_ls")`:
+
+```lua
+vim.lsp.enable("vue_ls")
+```
+
+Do not extend `vue_ls.filetypes`; Vue Language Server 3 removed Take Over Mode. Leave the existing `ts_ls` line unchanged.
+
+- [x] **Step 3: Verify the LSP configuration**
+
+Run:
+
+```bash
+nvim --headless \
+  "+lua assert(vim.lsp.is_enabled('vue_ls'), 'vue_ls is not enabled')" \
+  "+lua assert(vim.lsp.is_enabled('ts_ls'), 'ts_ls is not enabled')" \
+  "+lua assert(vim.deep_equal(vim.lsp.config.vue_ls.filetypes, { 'vue' }), 'vue_ls filetypes changed')" \
+  +qa
+```
+
+Expected: exit status 0 with no Lua errors.
+
+### Task 2: Extend Mason Health Reporting
+
+**Files:**
+- Modify: `nvim/lua/mason/health.lua:21-42`
+
+- [x] **Step 1: Run the pre-change assertion**
+
+Run:
+
+```bash
+nvim --headless \
+  "+lua local source = table.concat(vim.fn.readfile('nvim/lua/mason/health.lua'), '\\n'); assert(not source:find('vue%-language%-server'), 'Vue executable check already exists')" \
+  +qa
+```
+
+Expected: exit status 0, proving the executable check is absent.
+
+- [x] **Step 2: Add the Vue executable check**
+
+In `M.check()`, after the `node` check, add:
+
+```lua
+check_executable(
+  "Vue Language Server",
+  "vue-language-server",
+  "Install the `vue-language-server` Mason package for Vue single-file component support."
+)
+```
+
+Update the Node advice string to include Vue:
+
+```lua
+"Required for your configured TypeScript, Vue, ESLint, HTML, CSS, Emmet, and Intelephense language servers."
+```
+
+- [x] **Step 3: Verify the health module loads**
+
+Run:
+
+```bash
+nvim --headless \
+  "+lua assert(type(require('mason.health').check) == 'function', 'Mason health check failed to load')" \
+  "+lua local source = table.concat(vim.fn.readfile('nvim/lua/mason/health.lua'), '\\n'); assert(source:find('vue%-language%-server'), 'Vue executable check is missing')" \
+  +qa
+```
+
+Expected: exit status 0 with no Lua errors.
+
+### Task 3: Install and Verify Vue Language Server
+
+**Files:**
+- No repository file changes
+- External package location: Neovim data directory under `mason/packages/vue-language-server`
+
+- [x] **Step 1: Install through Mason**
+
+Run:
+
+```bash
+nvim --headless "+MasonInstall vue-language-server" +qa
+```
+
+Expected: Mason reports that `vue-language-server` was installed or is already installed.
+
+- [x] **Step 2: Verify the executable and package**
+
+Run:
+
+```bash
+test -x "${XDG_DATA_HOME:-$HOME/.local/share}/nvim/mason/bin/vue-language-server"
+"${XDG_DATA_HOME:-$HOME/.local/share}/nvim/mason/bin/vue-language-server" --version
+```
+
+Expected: both commands exit successfully and the second prints a version.
+
+- [x] **Step 3: Run the complete headless verification**
+
+Run:
+
+```bash
+nvim --headless \
+  "+lua assert(vim.lsp.is_enabled('vue_ls'), 'vue_ls is not enabled')" \
+  "+lua assert(vim.lsp.is_enabled('ts_ls'), 'ts_ls is not enabled')" \
+  "+lua assert(vim.fn.executable('vue-language-server') == 1, 'vue-language-server is unavailable')" \
+  +qa
+git diff --check
+git status --short
+```
+
+Expected: Neovim exits successfully, `git diff --check` has no output, and status shows only the intended LSP/health changes plus pre-existing user changes and this plan.
+
+- [x] **Step 4: Commit the implementation**
+
+Run:
+
+```bash
+git add nvim/lua/tracer/plugins/lspconfig.lua nvim/lua/mason/health.lua
+git commit -m "Add Vue language server support"
+```
+
+Expected: the commit contains exactly the two Neovim configuration files.