Use the native vim.lsp.config/vim.lsp.enable API for server setup
instead of going through nvim-lspconfig. This is the recommended
approach since 0.11 and removes a runtime dependency.

Along the way, clean up several things that the 0.11 floor makes
possible or that were broken:

- Remove compat shim for vim.lsp.get_active_clients (deprecated)
- Remove version guard around parser:parse(true) and the redundant
  { all = true } arg to iter_captures (both defaults since 0.10+)
- Replace vim.loop with vim.uv in tests
- Move namespace/augroup IDs from vim.g into the Lua state module
  to avoid msgpack serialization on every access
- Fix highlight cache check in utils.set_hl_from (nvim_get_hl
  returns a dict, not an array, so the guard was a no-op)
- Rewrite color debounce with a single persistent vim.uv timer
  instead of creating and leaking timers via vim.defer_fn
- Register conceal autocmds once at setup and gate on state flag
  instead of re-registering on every enable() call
- Add vim.validate checks on user config in setup()
- Use ipairs for array iteration throughout
- Remove nvim-lspconfig from health check
- Fix tresitter -> treesitter typo in classes.lua

Listen for custom notifications from tailwindcss-language-server:
- @/tailwindCSS/projectInitialized: fire color requests when project is ready
- @/tailwindCSS/projectReset / projectsDestroyed: clear state on reload
- @/tailwindCSS/clearColors: clear stale extmarks on settings change
- @/tailwindCSS/warn: surface config errors via vim.notify

Guard on_attach color request behind project.initialized to fix race
condition where colors were requested before the server was ready.
Reset project state on LspDetach for clean crash/restart handling.

Replace exact version match in LSP tests with major version prefix
check. The test verifies the correct project type (v3 vs v4) was
detected, not an exact patch version.

Fix CLAUDE.md test commands: add init='tests/init.lua' to plenary
opts so child processes load plugins (parsers become discoverable).
Add prerequisite install steps for npm deps and treesitter parsers.

Document Neovim 0.11 modernization, LSP notification handlers,
and bug fixes specific to this fork.

Upstream keeps one global project state. In a monorepo with more than one
Tailwind config, this state is wrong. The first client of the session replies
for every buffer, and the notifications of one project clear the state of
another project.

A project identity is now the client id together with the config path that the
server reports. The plugin asks for `@/tailwindCSS/projectDetails`. It records
each project under its own config path. It then resolves a buffer to a client,
and the client to a project. Each server notification applies only to the
client that sent it, and to the buffers of that client.

A request goes to the client attached to the buffer. If more than one client is
attached, the plugin selects the deepest root. The plugin never falls back to
an arbitrary client, because a client with a root outside the file describes a
different project.

The plugin also groups the root markers into tiers. The closest Tailwind config
now has precedence over `package.json`.

Other changes:

- Require Neovim 0.12 and drop the `nvim-lspconfig` dependency. Server setup
  uses `vim.lsp.config`, and color hints use the native
  `vim.lsp.document_color`. Conceal mode keeps its own renderer, because the
  native renderer draws the whole buffer.
- Cancel each in-flight `textDocument/documentColor` request before the plugin
  sends a new one. A generation token stops a superseded callback, so that
  callback draws nothing.
- Clear the color extmarks of every tracked buffer, and not only of the buffers
  that received conceals.
- Resolve the modules of the remote plugin with the resolver of Node. Hoisted
  layouts, nested layouts and pnpm layouts now behave like the tools of the
  project. Each RPC function replies with one result shape that names the
  failure.
- Pin the Telescope picker to the project of the buffer that opened it. At
  preview time, the current buffer belongs to Telescope.
- Resolve the positions of a pattern match with one shared offset table and a
  binary search. The plugin no longer builds a table for each match. A range
  that ends on the last line of the buffer now reports the correct start line.
- Apply the count of `<c-a>`, `<c-x>` and the class motions as one step.
- Add tests for monorepos, the color lifecycle, offsets, counts and filetypes.

The help file was 15 months old. It still told the reader to configure the
server with `nvim-lspconfig`, which this plugin no longer uses.

GitHub Actions does not run on this fork, so the `Docs` workflow cannot
generate the file. This commit holds the output of panvimdoc for the current
README.

The workflow now declares `NVIM v0.12.0`, which is the version that the plugin
requires.