refactor: rename scl_lsp → tia_lsp (project umbrella for future STL/LAD/FBD)

Rename the project from scl_lsp to tia_lsp to future-proof for additional
TIA Portal languages (STL/AWL, LAD, FBD). The 'scl' language name is kept
as-is for the SCL filetype and tree-sitter parser; future languages get
their own names (stl, lad, fbd).

Project-wide changes:
- lua/scl_lsp/ → lua/tia_lsp/  (plugin entry point)
- lua/scl/     → lua/tia/      (language modules, shared across TIA langs)
- require('scl.*')    → require('tia.*')
- require('scl_lsp')  → require('tia_lsp')
- LSP client name:    'scl_lsp' → 'tia_lsp'
- Diagnostic source:  'scl_lsp' → 'tia_lsp'  (src/diagnostics.lua)
- package.json name:  'scl-language-server' → 'tia-lsp'

lua/tia_lsp/init.lua:
- Add vim.fn.exepath('tia-lsp') detection so the plugin prefers the
  mason-installed executable and falls back to { 'lua', server_path }
  for manual installs.
- Add opts.ts_parser_url to configure the tree-sitter parser source.
- Remove hardcoded ~/dev/scl_lsp paths in favor of ~/dev/tia-lsp and
  the new ts_parser_url option.

Cleanup:
- Delete lua/tia/init.lua (dead code, unreferenced duplicate of tia_lsp).
- Delete scl_lsp.sh (replaced by the mason-installed bin/tia-lsp wrapper).
- Update README.md and AGENTS.md to reflect the two-repo split
  (tia-lsp server + tia-lsp.nvim plugin) and document Mason installation.

Unchanged (intentional):
- grammar.js, src/grammar.json, src/parser.c: tree-sitter language name
  remains 'scl' (it's the language, not the project).
- Filetype patterns ('scl', 'udt', 'db') in autocmds.
- :SCL* command names (per-filetype prefix; future :STL* etc.).

Tests pass with the same pre-existing failures as before the rename
(formatter VAR_INPUT test, udt_parser line 199 const-variable bug,
plc_json reference-project-missing). No new failures introduced.

AGENTS.md

@@ -1,6 +1,9 @@
-# AGENTS.md - SCL Language Server
+# AGENTS.md - tia-lsp
 
-A Neovim/LazyVim plugin for Siemens SCL language support providing LSP, linting, formatting, syntax highlighting, and auto-completion.
+A Neovim/LazyVim plugin and standalone LSP server for Siemens TIA Portal languages. Currently supports **SCL**; planned support for STL/AWL, LAD, FBD. The project is split into two repos:
+
+- **`tia-lsp`** (this repo) — LSP server (`src/`) + tree-sitter grammar (`grammar.js`). Editor-agnostic.
+- **`tia-lsp.nvim`** — Neovim plugin (`lua/`) that launches the server and adds editor features.
 
 ## Build/Lint/Test Commands
 
@@ -17,7 +20,7 @@ tree-sitter parse <file.scl>  # Parse single SCL file
 
 # Lua Linting
 luacheck src/                 # Lint LSP server code
-luacheck lua/scl/             # Lint plugin modules
+luacheck lua/tia/             # Lint plugin modules
 
 # Unit & Integration Tests
 lua test/run_tests.lua       # Run all tests
@@ -36,18 +39,17 @@ lua test/test_integration.lua # Run integration tests
 ## Project Structure
 
 ```
-scl_lsp/
+tia-lsp/
 ├── src/                     # LSP server (uses dofile)
 │   ├── main.lua            # Entry point, JSON-RPC protocol
-│   ├── parser.lua          # SCL parser
-│   ├── diagnostics.lua     # Linter
+│   ├── parser.lua          # SCL parser (will become parser_scl.lua + dispatch)
+│   ├── diagnostics.lua     # Linter (source = "tia_lsp")
 │   ├── formatter.lua       # Document formatter
 │   ├── treesitter.lua      # Tree-sitter integration
-│   ├── plc_json.lua        # External UDT/DB loading
+│   ├── plc_json.lua        # External UDT/DB loading (language-agnostic)
 │   ├── builtin_instructions.lua  # TIA Portal built-in types
 │   └── json.lua            # JSON encoder/decoder
-├── lua/scl/                 # Neovim plugin (uses require)
-│   ├── init.lua            # Main plugin setup
+├── lua/tia/                 # Neovim plugin (uses require)
 │   ├── udt_parser.lua      # UDT parser
 │   ├── db_parser.lua       # Global DB parser
 │   ├── fb_parser.lua       # Function Block parser
@@ -56,13 +58,24 @@ scl_lsp/
 │   ├── multiline_params.lua
 │   ├── auto_prefix.lua
 │   └── attr_toggle.lua
-├── queries/                 # Tree-sitter queries
-└── grammar.js               # Tree-sitter grammar
+├── lua/tia_lsp/             # Plugin entry point
+│   ├── init.lua            # Main plugin setup (vim.lsp.start)
+│   └── plugins/scl.lua     # LazyVim plugin spec
+├── queries/                 # Tree-sitter queries (per-language: queries/scl/)
+└── grammar.js               # Tree-sitter grammar (language name: 'scl')
 ```
 
+## Naming Convention
+
+- **Project name** (repo, Lua module, LSP server, mason package): `tia-lsp` / `tia_lsp` — umbrella for all TIA languages.
+- **Language name** (filetype, tree-sitter parser, grammar): `scl` — stays as-is. Future languages (`stl`, `lad`, `fbd`) get their own names.
+- **LSP client name**: `tia_lsp` (one client handles all TIA languages; dispatches by `filetype` / `languageId`).
+- **Diagnostic source**: `tia_lsp`.
+- **Commands**: `:SCLFormat`, `:SCLShowVariables`, etc. — per-filetype prefix. Future: `:STLFormat`, etc.
+
 ## Filetype Detection
 
-Required in Neovim config (ftdetect/scl.vim):
+After the split, `ftdetect/scl.vim` will live in `tia-lsp.nvim`. Currently required in Neovim config:
 ```vim
 au BufRead,BufNewFile *.scl set filetype=scl
 au BufRead,BufNewFile *.udt set filetype=scl
@@ -93,12 +106,13 @@ return M
 - Booleans: prefix with `is_`, `has_` (e.g., `is_udt`, `has_members`)
 
 ### Imports
-- `lua/scl/` modules: `require("scl.module_name")`
+- `lua/tia/` modules: `require("tia.module_name")`
+- `lua/tia_lsp/` entry: `require("tia_lsp")`
 - `src/` modules: `dofile(script_path .. "/module.lua")`
 - External dependencies: wrap in `pcall()` for safety
 
 ### Code Formatting
-- `lua/scl/`: 2 spaces indentation
+- `lua/tia/` and `lua/tia_lsp/`: 2 spaces indentation
 - `src/`: tab-based indentation
 - Max line length: 120 characters
 - No trailing whitespace

README.md

@@ -1,6 +1,11 @@
-# SCL Language Server - Unified Plugin for Siemens SCL
+# tia-lsp - Language Server for Siemens TIA Portal
 
-A comprehensive Neovim/LazyVim plugin providing **Language Server Protocol (LSP)**, **Linting**, **Formatting**, and **Syntax Highlighting** for Siemens SCL (Structured Control Language) used in Siemens TIA Portal.
+A Neovim/LazyVim plugin and standalone LSP server providing **Language Server Protocol (LSP)**, **Linting**, **Formatting**, and **Syntax Highlighting** for Siemens TIA Portal languages. Currently supports **SCL** (Structured Control Language), with planned support for **STL/AWL**, **LAD**, and **FBD**.
+
+The project is split into two repos:
+
+- **`tia-lsp`** (this repo) — the standalone LSP server (`src/`) plus the tree-sitter grammar (`grammar.js`, `src/parser.c`). Speaks JSON-RPC over stdio. Editor-agnostic: usable from Neovim, VS Code, or any LSP client.
+- **`tia-lsp.nvim`** — the Neovim plugin (`lua/`) that launches the server via `vim.lsp.start()` and adds editor-specific features (auto-prefix, blink.cmp source, workspace UDT scanning, attribute toggle, multiline params).
 
 ## Features
 
@@ -58,11 +63,13 @@ A comprehensive Neovim/LazyVim plugin providing **Language Server Protocol (LSP)
 
 ## Installation
 
+The plugin auto-detects the mason-installed `tia-lsp` executable via `vim.fn.exepath("tia-lsp")` and falls back to `lua <server_path>` for manual installs. See [Mason installation](#mason-installation) below for the recommended path.
+
 ### LazyVim
 ```lua
--- ~/.config/nvim/lua/plugins/scl.lua
+-- ~/.config/nvim/lua/plugins/tia-lsp.lua
 return {
-  "lazar/scl_lsp",
+  "lazar/tia-lsp.nvim",
   ft = "scl",
   lazy = true,
   dependencies = {
@@ -71,7 +78,7 @@ return {
     "saghen/blink.cmp",
   },
   config = function()
-    require("scl_lsp").setup({
+    require("tia_lsp").setup({
       -- LSP options
       lsp = {
         on_attach = function(client, bufnr)
@@ -90,19 +97,59 @@ return {
 ### Manual Setup
 ```lua
 -- In your init.lua or plugin file
-require("scl_lsp").setup({
-  server_path = "/path/to/scl_lsp/src/main.lua",
+require("tia_lsp").setup({
+  server_path = "/path/to/tia-lsp/src/main.lua",  -- only used if tia-lsp is not on PATH
+  ts_parser_url = "https://your-gitea/tia-lsp.git", -- tree-sitter parser source
   cmp = true,
   workspace_types = true,
   auto_prefix = true,
 })
 ```
 
+### Mason installation
+
+`tia-lsp` can be installed via [mason.nvim](https://github.com/mason-org/mason.nvim) using a custom registry. The setup below uses a `file:` registry sourced from a Gitea-hosted `tia-mason-registry` repo (cloned by lazy.nvim), and falls back to the official mason registry for any other packages.
+
+1. Clone the registry repo as a lazy.nvim plugin:
+   ```lua
+   -- ~/.config/nvim/lua/plugins/tia-mason-registry.lua
+   return {
+     url = "https://your-gitea/tia-mason-registry.git",
+     name = "tia-mason-registry",
+     lazy = false,  -- must be available before mason setup
+   }
+   ```
+2. Register the registry with mason:
+   ```lua
+   -- ~/.config/nvim/lua/plugins/mason.lua
+   return {
+     "mason-org/mason.nvim",
+     opts = {
+       registries = {
+         "file:" .. vim.fn.expand("~/.local/share/nvim/lazy/tia-mason-registry"),
+         "github:mason-org/mason-registry",
+       },
+     },
+   }
+   ```
+3. Install `yq` (one-time prerequisite for mason's `file:` registry):
+   ```
+   :MasonInstall yq
+   ```
+4. Install the server:
+   ```
+   :MasonInstall tia-lsp
+   ```
+5. Verify: open a `.scl` file and run `:LspInfo` — `tia_lsp` should be attached, and `vim.fn.exepath("tia-lsp")` should resolve to `~/.local/share/nvim/mason/bin/tia-lsp`.
+
+To upgrade: tag a new `vX.Y.Z` release on the `tia-lsp` Gitea repo, bump `source.id` in `tia-mason-registry/packages/tia-lsp/package.yaml`, push the registry repo, then `:MasonInstall tia-lsp` again.
+
 ## Configuration Options
 
 | Option | Type | Default | Description |
 |--------|------|---------|-------------|
-| `server_path` | string | `~/dev/scl_lsp/src/main.lua` | Path to LSP server |
+| `server_path` | string | `~/dev/tia-lsp/src/main.lua` | Path to LSP server (only used if `tia-lsp` is not on PATH) |
+| `ts_parser_url` | string | `file://~/dev/tia-lsp` | URL passed to nvim-treesitter for the SCL parser source |
 | `lsp.on_attach` | function | `nil` | Custom LSP attach callback |
 | `lsp.formatting` | boolean | `false` | Enable format command |
 | `cmp` | boolean | `true` | Enable blink.cmp integration |
@@ -185,7 +232,7 @@ The LSP automatically scans for SCL files in `data_types/` folder and extracts T
 
 ### Option 3: Generate `.plc.json`
 ```bash
-lua /home/lazar/dev/scl_lsp/src/plc_json.lua --generate
+lua ~/dev/tia-lsp/src/plc_json.lua --generate
 ```
 
 ## Global Data Block Support
@@ -218,40 +265,43 @@ The plugin automatically scans for `.db` files in the workspace and provides aut
 ### Project Structure
 
 ```
-scl_lsp/
+tia-lsp/
 ├── README.md                    # This file
 ├── package.json                 # NPM scripts (tree-sitter)
 ├── Makefile                     # Build commands
-├── grammar.js                   # Tree-sitter grammar
-├── tree-sitter.json            # Parser config
-├── queries/                    # Tree-sitter queries
-│   ├── highlights.scm         # Syntax highlighting
-│   ├── indents.scm            # Indentation
-│   ├── folds.scm              # Code folding
-│   ├── locals.scm             # Variable scoping
-│   └── tags.scm               # Navigation tags
-├── src/                        # LSP server
-│   ├── main.lua               # Main entry point
-│   ├── parser.lua             # Regex-based parser
-│   ├── treesitter.lua         # Tree-sitter integration
-│   ├── json.lua               # JSON encoder/decoder
-│   ├── plc_json.lua           # External UDT loading
-│   ├── diagnostics.lua        # Linter diagnostics
-│   └── formatter.lua          # Document formatter
+├── grammar.js                   # Tree-sitter grammar (SCL language)
+├── tree-sitter.json             # Parser config
+├── queries/                     # Tree-sitter queries
+│   └── scl/                     # Per-language query dir (SCL)
+│       ├── highlights.scm       # Syntax highlighting
+│       ├── indents.scm          # Indentation
+│       ├── folds.scm            # Code folding
+│       ├── locals.scm           # Variable scoping
+│       └── tags.scm             # Navigation tags
+├── src/                         # LSP server
+│   ├── main.lua                 # Main entry point (JSON-RPC over stdio)
+│   ├── parser.lua               # SCL parser (will become parser_scl.lua + dispatch)
+│   ├── treesitter.lua           # Tree-sitter integration
+│   ├── json.lua                 # JSON encoder/decoder
+│   ├── plc_json.lua             # External UDT loading (language-agnostic)
+│   ├── diagnostics.lua          # Linter diagnostics
+│   └── formatter.lua            # Document formatter
 └── lua/
-    └── scl_lsp/
-        ├── init.lua           # Main plugin setup
-        ├── plugins/
-        │   └── scl.lua        # LazyVim plugin spec
-        └── scl/               # Syntax/completion modules
-            ├── init.lua
-            ├── auto_prefix.lua
-            ├── blink_cmp_source.lua
-            ├── db_parser.lua
-            ├── fb_parser.lua
-            ├── udt_parser.lua
-            ├── variables.lua
-            └── workspace_types.lua
+    ├── tia_lsp/                 # Neovim plugin
+    │   ├── init.lua             # Main plugin setup
+    │   └── plugins/
+    │       └── scl.lua          # LazyVim plugin spec (SCL filetype)
+    └── tia/                     # Language modules (shared across TIA languages)
+        ├── auto_prefix.lua
+        ├── attr_toggle.lua
+        ├── blink_cmp_source.lua
+        ├── builtin_instructions.lua
+        ├── db_parser.lua
+        ├── fb_parser.lua
+        ├── multiline_params.lua
+        ├── udt_parser.lua
+        ├── variables.lua
+        └── workspace_types.lua
 ```
 
 ## Building Tree-sitter Parser
@@ -294,7 +344,7 @@ The plugin uses a standalone LSP server (`src/main.lua`) that communicates via J
 - Completion, hover, go-to-definition
 - Semantic tokens
 
-The Neovim plugin (`lua/scl_lsp/init.lua`) manages:
+The Neovim plugin (`lua/tia_lsp/init.lua`) manages:
 - LSP client lifecycle via `vim.lsp.start()`
 - FileType autocmd for lazy loading
 - blink.cmp integration

lua/scl/init.lua

@@ -1,266 +0,0 @@
--- SCL (Siemens Structured Control Language) support for Neovim
--- Main setup module
-
-local M = {}
-
-function M.setup(opts)
-  opts = opts or {}
-
-  -- Add plugin to runtime path
-  vim.opt.runtimepath:prepend(vim.fn.stdpath("data") .. "/lazy/scl_lsp")
-
-  M.create_commands()
-
-  -- Treesitter setup for Neovim 0.11+
-  local function setup_treesitter()
-    local lang = vim.treesitter.language
-    local parser_path = "/home/lazar/dev/scl_lsp/src/parser.so"
-    
-    -- Register the SCL language
-    lang.add("scl", {
-      path = parser_path,
-      filetype = "scl",
-    })
-  end
-  
-  pcall(setup_treesitter)
-  
-  -- Install queries
-  local queries_src = "/home/lazar/dev/scl_lsp/queries/highlights.scm"
-  local queries_dest = vim.fn.stdpath("data") .. "/site/queries/scl/highlights.scm"
-  if vim.fn.filereadable(queries_src) == 1 then
-    vim.fn.mkdir(vim.fn.stdpath("data") .. "/site/queries/scl", "p")
-    vim.fn.writefile(vim.fn.readfile(queries_src), queries_dest)
-  end
-  
-  -- Enable treesitter manually for SCL files - bypass LazyVim
-  vim.api.nvim_create_autocmd("FileType", {
-    pattern = "scl",
-    callback = function(args)
-      vim.treesitter.start(args.buf, "scl")
-    end,
-  })
-
-  -- Register blink.cmp source
-  if opts.cmp then
-    local function try_register()
-      local cmp_ok, cmp = pcall(require, "blink.cmp")
-      if cmp_ok and cmp and cmp.add_source_provider then
-        local source_config = {
-          name = "scl",
-          module = "scl.blink_cmp_source",
-          score_offset = 100,
-        }
-        pcall(cmp.add_source_provider, "scl", source_config)
-        pcall(cmp.add_filetype_source, "scl", "scl")
-        
-        -- Create autocmd to trigger completion on ( for SCL files
-        local augroup = vim.api.nvim_create_augroup("SCLCompletionTrigger", { clear = true })
-        vim.api.nvim_create_autocmd("TextChangedI", {
-          group = augroup,
-          pattern = "*.scl",
-          callback = function(args)
-            local line = vim.api.nvim_get_current_line()
-            local col = vim.api.nvim_win_get_cursor(0)[2]
-            -- Check if the character before cursor is (
-            if col > 0 and line:sub(col, col) == "(" then
-              -- Check if there's a known FB variable before the (
-              local before_paren = line:sub(1, col - 1):match("[%w_]+%s*$")
-              if before_paren then
-                vim.schedule(function()
-                  pcall(require("blink.cmp").show, { providers = { "scl" } })
-                end)
-              end
-            end
-          end,
-        })
-        
-        vim.notify("SCL: blink.cmp source registered", vim.log.levels.INFO)
-        return true
-      end
-      return false
-    end
-
-    if not try_register() then
-      vim.api.nvim_create_autocmd("BufEnter", {
-        pattern = "*.scl",
-        once = true,
-        callback = try_register,
-      })
-    end
-  end
-
-  -- Workspace type scanner
-  if opts.workspace_types ~= false then
-    local workspace_types = require("scl.workspace_types")
-    workspace_types.setup({
-      project_root = opts.project_root,
-      library_paths = opts.library_paths,
-      debug = opts.debug,
-    })
-  end
-
-  -- Auto-prefixing (enabled by default)
-  M.setup_auto_prefix()
-
-  -- Multiline parameters feature
-  M.setup_multiline_params()
-
-  -- Attribute block toggle feature
-  M.setup_attr_toggle()
-end
-
-function M.setup_multiline_params()
-  local mp = require("scl.multiline_params")
-
-  vim.api.nvim_create_user_command("SCLMultilineParams", function()
-    mp.fill_multiline_params()
-  end, {})
-
-  vim.keymap.set("i", "<Space>mp", function()
-    mp.fill_multiline_params()
-  end, { noremap = true, silent = true, desc = "SCL: Fill multiline parameters" })
-
-  vim.keymap.set("i", "<Tab>", function()
-    local ft = vim.bo.filetype
-    if ft == "scl" or ft == "udt" then
-      if mp.jump_to_next_param() then
-        return ""
-      end
-    end
-    return "<Tab>"
-  end, { noremap = true, silent = true, desc = "SCL: Jump to next param or Tab" })
-end
-
-function M.setup_auto_prefix()
-  require("scl.auto_prefix").setup()
-end
-
-function M.prefix_current_word()
-  require("scl.auto_prefix").prefix_word()
-end
-
-function M.show_variables()
-  local vars = require("scl.variables").extract_variables()
-  if #vars == 0 then
-    vim.notify("No local variables found", vim.log.levels.INFO)
-    return
-  end
-  local lines = { "Local Variables:", "---" }
-  for _, var in ipairs(vars) do
-    local type_info = var.type and (" : " .. var.type) or ""
-    table.insert(lines, "#" .. var.name .. type_info)
-  end
-  vim.notify(table.concat(lines, "\n"), vim.log.levels.INFO)
-end
-
-function M.show_workspace_types()
-  local ws = require("scl.workspace_types")
-  local udt = require("scl.udt_parser")
-  local fb = require("scl.fb_parser")
-  local db = require("scl.db_parser")
-  local root = ws.get_project_root()
-  local udt_names = udt.get_all_udt_names()
-  local fb_names = fb.get_all_fb_names()
-  local db_names = db.get_all_db_names()
-  if not root then
-    vim.notify("No project root detected", vim.log.levels.WARN)
-    return
-  end
-  vim.notify("Project: " .. root .. "\nUDTs: " .. #udt_names .. "\nFBs/Functions: " .. #fb_names .. "\nGlobal DBs: " .. #db_names, vim.log.levels.INFO)
-end
-
-function M.rescan_workspace_types()
-  local ws = require("scl.workspace_types")
-  local udt = require("scl.udt_parser")
-  local fb = require("scl.fb_parser")
-  local db = require("scl.db_parser")
-  udt.clear_cache()
-  fb.clear_cache()
-  db.clear_cache()
-  ws.clear_root_cache()
-  local udt_result = ws.scan_project_udts()
-  local fb_result = ws.scan_project_fbs()
-  local db_result = ws.scan_project_dbs()
-  vim.notify("Scanned UDTs: " .. udt_result.parsed_count .. "/" .. udt_result.total_files .. 
-            ", FBs: " .. fb_result.parsed_count .. "/" .. fb_result.total_files ..
-            ", DBs: " .. db_result.parsed_count .. "/" .. db_result.total_files, vim.log.levels.INFO)
-end
-
-function M.create_commands()
-  vim.api.nvim_create_user_command("SCLShowVariables", function() M.show_variables() end, {})
-  vim.api.nvim_create_user_command("SCLShowWorkspaceTypes", function() M.show_workspace_types() end, {})
-  vim.api.nvim_create_user_command("SCLRescanWorkspaceTypes", function() M.rescan_workspace_types() end, {})
-  
-  -- Attribute toggle commands
-  vim.api.nvim_create_user_command("SCLToggleAttrBlock", function()
-    local ok, at = pcall(require, "scl.attr_toggle")
-    if ok then
-      at.toggle_attr_block()
-    else
-      vim.notify("SCL: Failed to load attr_toggle module", vim.log.levels.ERROR)
-    end
-  end, {})
-  vim.api.nvim_create_user_command("SCLExpandAllAttrBlocks", function()
-    local ok, at = pcall(require, "scl.attr_toggle")
-    if ok then
-      at.expand_all_attr_blocks()
-    else
-      vim.notify("SCL: Failed to load attr_toggle module", vim.log.levels.ERROR)
-    end
-  end, {})
-  vim.api.nvim_create_user_command("SCLCollapseAllAttrBlocks", function()
-    local ok, at = pcall(require, "scl.attr_toggle")
-    if ok then
-      at.collapse_all_attr_blocks()
-    else
-      vim.notify("SCL: Failed to load attr_toggle module", vim.log.levels.ERROR)
-    end
-  end, {})
-end
-
-function M.setup_attr_toggle()
-  local at = require("scl.attr_toggle")
-  at.setup()
-
-  local function setup_buffer_keymaps(bufnr)
-    local opts = { buffer = bufnr, silent = true }
-    local ft = vim.bo[bufnr].filetype
-    
-    if ft ~= "scl" and ft ~= "udt" then
-      return
-    end
-
-    -- Toggle individual attribute block under cursor
-    vim.keymap.set({ "n", "i" }, "<Leader>xa", function()
-      at.toggle_attr_block()
-    end, vim.tbl_extend("force", opts, { desc = "SCL: Toggle attribute block" }))
-
-    -- Expand all collapsed blocks
-    vim.keymap.set("n", "<Leader>xae", function()
-      at.expand_all_attr_blocks()
-    end, vim.tbl_extend("force", opts, { desc = "SCL: Expand all attribute blocks" }))
-
-    -- Collapse all attribute blocks
-    vim.keymap.set("n", "<Leader>xac", function()
-      at.collapse_all_attr_blocks()
-    end, vim.tbl_extend("force", opts, { desc = "SCL: Collapse all attribute blocks" }))
-  end
-
-  -- Set up keybindings for SCL files only
-  vim.api.nvim_create_autocmd("FileType", {
-    pattern = { "scl", "udt" },
-    callback = function(args)
-      setup_buffer_keymaps(args.buf)
-    end,
-  })
-  
-  -- Also check if there are already SCL buffers open
-  for _, bufnr in ipairs(vim.api.nvim_list_bufs()) do
-    if vim.api.nvim_buf_is_loaded(bufnr) then
-      setup_buffer_keymaps(bufnr)
-    end
-  end
-end
-
-return M

lua/tia/auto_prefix.lua

@@ -71,7 +71,7 @@ local function get_local_variables()
     end
   end
 
-  local scl_vars = require("scl.variables")
+  local scl_vars = require("tia.variables")
   local vars = scl_vars.extract_variables(bufnr)
 
   var_cache = {}
@@ -545,7 +545,7 @@ function M.setup()
               local before_semicolon = line:sub(1, cursor_col - 1)
               local type_name = before_semicolon:match(":%s*([%w_]+)%s*$")
               if type_name then
-                local udt_parser = require("scl.udt_parser")
+                local udt_parser = require("tia.udt_parser")
                 local is_udt = udt_parser.is_udt_type(type_name)
                 if is_udt and not before_semicolon:match(":%s*\"" .. type_name .. "\"") then
                   local new_before = before_semicolon:gsub(":%s*" .. type_name .. "%s*$", ':"' .. type_name .. '"')

lua/tia/blink_cmp_source.lua

@@ -104,7 +104,7 @@ end
 
 -- Get all known local variables
 local function get_known_variables(bufnr)
-  local scl_vars = require("scl.variables")
+  local scl_vars = require("tia.variables")
   local variables = scl_vars.extract_variables(bufnr)
   local known = {}
   for _, v in ipairs(variables) do
@@ -115,12 +115,12 @@ end
 
 -- Check if a type is an FB/Function and get its interface
 local function get_fb_interface(var_type)
-  local fb_parser = require("scl.fb_parser")
+  local fb_parser = require("tia.fb_parser")
   local clean_type = var_type:gsub('"', '')
   
   -- If cache is empty, try to scan workspace for FBs
   if fb_parser.get_cache_count() == 0 then
-    local ws = require("scl.workspace_types")
+    local ws = require("tia.workspace_types")
     ws.scan_project_fbs(vim.api.nvim_get_current_buf())
   end
   
@@ -129,12 +129,12 @@ end
 
 -- Check if a type is an FB/Function
 local function is_fb_type(var_type)
-  local fb_parser = require("scl.fb_parser")
+  local fb_parser = require("tia.fb_parser")
   local clean_type = var_type:gsub('"', '')
   
   -- If cache is empty, try to scan workspace for FBs
   if fb_parser.get_cache_count() == 0 then
-    local ws = require("scl.workspace_types")
+    local ws = require("tia.workspace_types")
     ws.scan_project_fbs(vim.api.nvim_get_current_buf())
   end
   
@@ -236,7 +236,7 @@ function M:get_completions(context, callback)
   local after_closed_db = active_portion:match('"([%w_]+)"%s*%.') ~= nil
   
   if db_member_pattern or after_closed_db then
-    local db_parser = require("scl.db_parser")
+    local db_parser = require("tia.db_parser")
     local db_name = active_portion:match('"([%w_]+)"')
     
     if db_name then
@@ -271,7 +271,7 @@ function M:get_completions(context, callback)
               resolved_path = part
               if found_member.is_udt then
                 -- This member is a UDT type, continue resolving
-                local udt_parser = require("scl.udt_parser")
+                local udt_parser = require("tia.udt_parser")
                 current_members = udt_parser.get_udt_members(found_member.type)
                 current_type = found_member.type
               else
@@ -306,7 +306,7 @@ function M:get_completions(context, callback)
         
         -- Get members to show (either from DB or from resolved UDT type)
         if current_type then
-          local udt_parser = require("scl.udt_parser")
+          local udt_parser = require("tia.udt_parser")
           current_members = udt_parser.get_udt_members(current_type)
         end
         
@@ -335,11 +335,11 @@ function M:get_completions(context, callback)
   
   -- Check for just " pattern (start of DB name completion or partial DB name)
   if is_in_db_name or is_partial_db or is_after_colon_quote then
-    local db_parser = require("scl.db_parser")
+    local db_parser = require("tia.db_parser")
     
     -- If cache is empty, try to scan workspace for DBs
     if db_parser.get_cache_count() == 0 then
-      local ws = require("scl.workspace_types")
+      local ws = require("tia.workspace_types")
       ws.scan_project_dbs(bufnr)
     end
     
@@ -376,7 +376,7 @@ function M:get_completions(context, callback)
     end
   end
 
-  local scl_vars = require("scl.variables")
+  local scl_vars = require("tia.variables")
   local variables = scl_vars.extract_variables(bufnr)
 
   -- Get all known local variables and their types
@@ -747,8 +747,8 @@ function M:get_completions(context, callback)
   end)
 
   vim.schedule(function()
-    local udt_parser = require("scl.udt_parser")
-    local db_parser = require("scl.db_parser")
+    local udt_parser = require("tia.udt_parser")
+    local db_parser = require("tia.db_parser")
 
   -- No member access = show local variables, UDT types, and basic types
   if not base_var then
@@ -779,9 +779,9 @@ function M:get_completions(context, callback)
     end
     
     -- Add Global DB names (without quotes - will be wrapped in resolve)
-    local db_parser = require("scl.db_parser")
+    local db_parser = require("tia.db_parser")
     if db_parser.get_cache_count() == 0 then
-      local ws = require("scl.workspace_types")
+      local ws = require("tia.workspace_types")
       ws.scan_project_dbs(bufnr)
     end
     

lua/tia/multiline_params.lua

@@ -7,7 +7,7 @@ local M = {}
 --- @param var_type string The FB type name
 --- @return table|nil Interface with inputs, outputs, inouts
 local function get_builtin_interface(var_type)
-  local builtin = require("scl.builtin_instructions")
+  local builtin = require("tia.builtin_instructions")
   local clean_type = var_type:gsub('"', ''):gsub("#", ""):upper()
   local params_info = builtin.get_parameters(clean_type)
   if params_info then
@@ -24,11 +24,11 @@ end
 --- @param var_type string The FB type name
 --- @return table|nil Interface with inputs, outputs, inouts
 local function get_fb_interface(var_type)
-  local fb_parser = require("scl.fb_parser")
+  local fb_parser = require("tia.fb_parser")
   local clean_type = var_type:gsub('"', '')
 
   if fb_parser.get_cache_count() == 0 then
-    local ws = require("scl.workspace_types")
+    local ws = require("tia.workspace_types")
     ws.scan_project_fbs(vim.api.nvim_get_current_buf())
   end
 
@@ -39,11 +39,11 @@ end
 --- @param var_type string The type name to check
 --- @return boolean True if type is an FB
 local function is_fb_type(var_type)
-  local fb_parser = require("scl.fb_parser")
+  local fb_parser = require("tia.fb_parser")
   local clean_type = var_type:gsub('"', '')
 
   if fb_parser.get_cache_count() == 0 then
-    local ws = require("scl.workspace_types")
+    local ws = require("tia.workspace_types")
     ws.scan_project_fbs(vim.api.nvim_get_current_buf())
   end
 
@@ -54,7 +54,7 @@ end
 --- @param bufnr number Buffer number
 --- @return table Set of variable names
 local function get_known_variables(bufnr)
-  local scl_vars = require("scl.variables")
+  local scl_vars = require("tia.variables")
   local variables = scl_vars.extract_variables(bufnr)
   local known = {}
   for _, v in ipairs(variables) do
@@ -68,7 +68,7 @@ end
 --- @param bufnr number Buffer number
 --- @return string|nil Variable type, or nil if not found
 local function get_variable_type(var_name, bufnr)
-  local scl_vars = require("scl.variables")
+  local scl_vars = require("tia.variables")
   return scl_vars.get_variable_type(var_name, bufnr)
 end
 
@@ -84,7 +84,7 @@ function M.fill_multiline_params()
   local line_before_cursor = line:sub(1, col)
 
   local known_vars = get_known_variables(bufnr)
-  local builtin = require("scl.builtin_instructions")
+  local builtin = require("tia.builtin_instructions")
 
   local fb_name = nil
   local fb_prefix = ""

lua/tia/workspace_types.lua

@@ -361,7 +361,7 @@ end
 
 -- Parse all UDT files in project and libraries
 function M.scan_project_udts(bufnr)
-  local udt_parser = require("scl.udt_parser")
+  local udt_parser = require("tia.udt_parser")
   local files = M.get_project_udt_files(bufnr)
   local lib_files = M.get_library_udt_files()
   
@@ -391,7 +391,7 @@ end
 
 -- Parse all FB/Function files in project and libraries
 function M.scan_project_fbs(bufnr)
-  local fb_parser = require("scl.fb_parser")
+  local fb_parser = require("tia.fb_parser")
   local files = M.get_project_fb_files(bufnr)
   local lib_files = M.get_library_fb_files()
   
@@ -421,7 +421,7 @@ end
 
 -- Parse all Global DB files in project and libraries
 function M.scan_project_dbs(bufnr)
-  local db_parser = require("scl.db_parser")
+  local db_parser = require("tia.db_parser")
   local files = M.get_project_db_files(bufnr)
   local lib_files = M.get_library_db_files()
   
@@ -486,9 +486,9 @@ function M.setup(opts)
     pattern = "*.scl",
     callback = function(args)
       -- Clear cache and rescan
-      local udt_parser = require("scl.udt_parser")
-      local fb_parser = require("scl.fb_parser")
-      local db_parser = require("scl.db_parser")
+      local udt_parser = require("tia.udt_parser")
+      local fb_parser = require("tia.fb_parser")
+      local db_parser = require("tia.db_parser")
       udt_parser.clear_cache()
       fb_parser.clear_cache()
       db_parser.clear_cache()
@@ -506,7 +506,7 @@ function M.setup(opts)
     pattern = "*.udt",
     callback = function(args)
       -- Re-parse the changed UDT file
-      local udt_parser = require("scl.udt_parser")
+      local udt_parser = require("tia.udt_parser")
       udt_parser.parse_udt_file(args.file)
     end,
   })
@@ -517,7 +517,7 @@ function M.setup(opts)
     pattern = "*.scl",
     callback = function(args)
       -- Re-parse the changed FB file
-      local fb_parser = require("scl.fb_parser")
+      local fb_parser = require("tia.fb_parser")
       fb_parser.parse_fb_file(args.file)
     end,
   })
@@ -527,7 +527,7 @@ function M.setup(opts)
     group = augroup,
     pattern = "*.db",
     callback = function(args)
-      local db_parser = require("scl.db_parser")
+      local db_parser = require("tia.db_parser")
       db_parser.parse_db_file(args.file)
     end,
   })

lua/tia_lsp/init.lua

@@ -2,7 +2,7 @@ local M = {}
 
 local function setup_package_path()
   local plugin_path = debug.getinfo(1, "S").source:gsub("^@", ""):match("(.*/)") or ""
-  plugin_path = plugin_path:gsub("/lua/scl_lsp", "")
+  plugin_path = plugin_path:gsub("/lua/tia_lsp", "")
   local lua_path = plugin_path .. "/lua"
   if not package.path:match(lua_path) then
     package.path = lua_path .. "/?.lua;" .. package.path
@@ -13,7 +13,7 @@ function M.setup(opts)
   setup_package_path()
   opts = opts or {}
 
-  local server_path = opts.server_path or vim.fn.expand("~/dev/scl_lsp/src/main.lua")
+  local server_path = opts.server_path or vim.fn.expand("~/dev/tia-lsp/src/main.lua")
   
   local root_patterns = { ".git", "data_types", "plc.data.json" }
   
@@ -24,9 +24,15 @@ function M.setup(opts)
     local root_dir = vim.fs.root(fname, root_patterns)
       or vim.fn.fnamemodify(fname, ":p:h")
     
+    -- Prefer the mason-installed executable (vim.fn.exepath resolves on each
+    -- buffer enter, so a :MasonInstall mid-session is picked up without restart).
+    -- Fall back to running the server via `lua <server_path>` for manual installs.
+    local tia_bin = vim.fn.exepath("tia-lsp")
+    local cmd = tia_bin ~= "" and { "tia-lsp" } or { "lua", server_path }
+    
     vim.lsp.start({
-      name = "scl_lsp",
-      cmd = { "lua", server_path },
+      name = "tia_lsp",
+      cmd = cmd,
       root_dir = root_dir,
       on_attach = function(client, b)
         if opts.lsp and opts.lsp.on_attach then
@@ -35,7 +41,7 @@ function M.setup(opts)
         
         if opts.lsp and opts.lsp.formatting then
           vim.api.nvim_buf_create_user_command(b, "SCLFormat", function()
-            vim.lsp.buf.format({ name = "scl_lsp" })
+            vim.lsp.buf.format({ name = "tia_lsp" })
           end, {})
         end
       end,
@@ -52,7 +58,7 @@ function M.setup(opts)
   
   -- Create global format command (works on current buffer)
   vim.api.nvim_create_user_command("SCLFormat", function()
-    vim.lsp.buf.format({ name = "scl_lsp" })
+    vim.lsp.buf.format({ name = "tia_lsp" })
   end, {})
   
   -- Start LSP for any existing scl buffers (handles lazy loading case)
@@ -79,7 +85,11 @@ function M.setup_syntax(opts)
     if ok and parser_config then
       parser_config.scl = {
         install_info = {
-          url = "file://" .. vim.fn.expand("~/dev/scl_lsp"),
+          -- Override via setup({ ts_parser_url = "https://your-gitea/tia-lsp.git" }).
+          -- Default is the upstream TIA Portal LSP server repo (placeholder until
+          -- the split is complete; see README "Mason installation").
+          url = opts.ts_parser_url
+            or "file://" .. vim.fn.expand("~/dev/tia-lsp"),
           files = { "src/parser.c" },
           generate_requires_npm = false,
           requires_generate_from_grammar = false,
@@ -92,7 +102,7 @@ function M.setup_syntax(opts)
   if opts.cmp then
     local function try_register()
       local cmp_ok, cmp = pcall(require, "blink.cmp")
-      local blink_source_ok, blink_source = pcall(require, "scl.blink_cmp_source")
+      local blink_source_ok, blink_source = pcall(require, "tia.blink_cmp_source")
       if cmp_ok and cmp and cmp.add_source_provider and blink_source_ok then
         local source_config = {
           name = "scl",
@@ -118,7 +128,7 @@ function M.setup_syntax(opts)
   end
 
   if opts.workspace_types ~= false then
-    local ok, workspace_types = pcall(require, "scl.workspace_types")
+    local ok, workspace_types = pcall(require, "tia.workspace_types")
     if ok then
       workspace_types.setup({
         project_root = opts.project_root,
@@ -130,14 +140,14 @@ function M.setup_syntax(opts)
 end
 
 function M.setup_auto_prefix()
-  local ok, auto_prefix = pcall(require, "scl.auto_prefix")
+  local ok, auto_prefix = pcall(require, "tia.auto_prefix")
   if ok then
     auto_prefix.setup()
   end
 end
 
 function M.setup_multiline_params()
-  local ok, mp = pcall(require, "scl.multiline_params")
+  local ok, mp = pcall(require, "tia.multiline_params")
   if not ok then
     vim.notify("SCL multiline_params module not found", vim.log.levels.WARN)
     return
@@ -163,14 +173,14 @@ function M.setup_multiline_params()
 end
 
 function M.prefix_current_word()
-  local ok, auto_prefix = pcall(require, "scl.auto_prefix")
+  local ok, auto_prefix = pcall(require, "tia.auto_prefix")
   if ok then
     auto_prefix.prefix_word()
   end
 end
 
 function M.show_variables()
-  local ok, variables = pcall(require, "scl.variables")
+  local ok, variables = pcall(require, "tia.variables")
   if not ok then
     vim.notify("SCL variables module not found", vim.log.levels.WARN)
     return
@@ -191,9 +201,9 @@ function M.show_variables()
 end
 
 function M.show_workspace_types()
-  local ok_ws, ws = pcall(require, "scl.workspace_types")
-  local ok_udt, udt = pcall(require, "scl.udt_parser")
-  local ok_fb, fb = pcall(require, "scl.fb_parser")
+  local ok_ws, ws = pcall(require, "tia.workspace_types")
+  local ok_udt, udt = pcall(require, "tia.udt_parser")
+  local ok_fb, fb = pcall(require, "tia.fb_parser")
 
   if not ok_ws or not ok_udt or not ok_fb then
     vim.notify("SCL workspace modules not found", vim.log.levels.WARN)
@@ -213,9 +223,9 @@ function M.show_workspace_types()
 end
 
 function M.rescan_workspace_types()
-  local ok_ws, ws = pcall(require, "scl.workspace_types")
-  local ok_udt, udt = pcall(require, "scl.udt_parser")
-  local ok_fb, fb = pcall(require, "scl.fb_parser")
+  local ok_ws, ws = pcall(require, "tia.workspace_types")
+  local ok_udt, udt = pcall(require, "tia.udt_parser")
+  local ok_fb, fb = pcall(require, "tia.fb_parser")
 
   if not ok_ws or not ok_udt or not ok_fb then
     vim.notify("SCL workspace modules not found", vim.log.levels.WARN)
@@ -241,7 +251,7 @@ function M.create_commands()
   
   -- Attribute toggle commands
   vim.api.nvim_create_user_command("SCLToggleAttrBlock", function()
-    local ok, at = pcall(require, "scl.attr_toggle")
+    local ok, at = pcall(require, "tia.attr_toggle")
     if ok then
       at.toggle_attr_block()
     else
@@ -250,7 +260,7 @@ function M.create_commands()
   end, {})
   
   vim.api.nvim_create_user_command("SCLExpandAllAttrBlocks", function()
-    local ok, at = pcall(require, "scl.attr_toggle")
+    local ok, at = pcall(require, "tia.attr_toggle")
     if ok then
       at.expand_all_attr_blocks()
     else
@@ -259,7 +269,7 @@ function M.create_commands()
   end, {})
   
   vim.api.nvim_create_user_command("SCLCollapseAllAttrBlocks", function()
-    local ok, at = pcall(require, "scl.attr_toggle")
+    local ok, at = pcall(require, "tia.attr_toggle")
     if ok then
       at.collapse_all_attr_blocks()
     else
@@ -269,7 +279,7 @@ function M.create_commands()
 end
 
 function M.setup_attr_toggle()
-  local ok, at = pcall(require, "scl.attr_toggle")
+  local ok, at = pcall(require, "tia.attr_toggle")
   if not ok then
     vim.notify("SCL: attr_toggle module not found", vim.log.levels.WARN)
     return

lua/tia_lsp/plugins/scl.lua

@@ -1,5 +1,5 @@
 return {
-  "lazar/scl_lsp",
+  "lazar/tia-lsp.nvim",
   ft = "scl",
   lazy = true,
   dependencies = {
@@ -8,8 +8,9 @@ return {
     "saghen/blink.cmp",
   },
   config = function(_, opts)
-    require("scl_lsp").setup({
+    require("tia_lsp").setup({
       server_path = opts.server_path,
+      ts_parser_url = opts.ts_parser_url,
       lsp = opts.lsp,
       cmp = opts.cmp ~= false,
       workspace_types = opts.workspace_types ~= false,

scl_lsp.sh

@@ -1,3 +0,0 @@
-#!/bin/bash
-cd /home/lazar/dev/scl_lsp
-lua src/main.lua

test/test_db.lua

@@ -2,7 +2,7 @@ local test = dofile("test/test_harness.lua")
 
 package.path = package.path .. ";lua/?.lua"
 
-local db_parser = require("scl.db_parser")
+local db_parser = require("tia.db_parser")
 
 local function test_db_parser_basic()
   local content = [[

test/test_fb.lua

@@ -2,7 +2,7 @@ local test = dofile("test/test_harness.lua")
 
 package.path = package.path .. ";lua/?.lua"
 
-local fb_parser = require("scl.fb_parser")
+local fb_parser = require("tia.fb_parser")
 
 local function test_fb_parser_basic()
   local content = [[

test/test_integration.lua

@@ -2,9 +2,9 @@ local test = dofile("test/test_harness.lua")
 
 package.path = package.path .. ";lua/?.lua;src/?.lua"
 
-local udt_parser = require("scl.udt_parser")
-local db_parser = require("scl.db_parser")
-local fb_parser = require("scl.fb_parser")
+local udt_parser = require("tia.udt_parser")
+local db_parser = require("tia.db_parser")
+local fb_parser = require("tia.fb_parser")
 
 local script_path = debug.getinfo(1, "S").source:gsub("^@", ""):match("(.*/)") or "."
 script_path = script_path:gsub("^test/", ""):gsub("/tests$", "")

test/test_udt.lua

@@ -2,7 +2,7 @@ local test = dofile("test/test_harness.lua")
 
 package.path = package.path .. ";lua/?.lua"
 
-local udt_parser = require("scl.udt_parser")
+local udt_parser = require("tia.udt_parser")
 
 local function test_udt_parser_basic()
   local content = [[