feat(tooling): shared discovery-first tool resolver

Add modules.utils.tools — the $PATH → Mason-install → aggregated-warning
resolver (M.resolve) shared by LSP, formatters, linters, and DAP, with Mason
as an optional backend. Includes the missing-tool collector (reason upgrades,
timeout-placeholder retraction, attempted-and-failed vs typo classification),
the install hand-off / :ToolsRetry paths (phase-1 $PATH failures stay
reachable), per-tick registry/mason-root memoization read live to avoid
latching, $MASON read live, and the shared parity-sweep delay. Removes the
now-unused utils.register_server.

Author: charliie-dev

lua/modules/utils/init.lua

@@ -269,19 +269,6 @@ function M.get_lsp_capabilities()
 	)
 end
 
----Setup and enable a language server in one call.
----@param server string @Name of the language server
----@param config? vim.lsp.Config @Optional config to apply
-function M.register_server(server, config)
-	vim.validate("server", server, "string", false)
-	vim.validate("config", config, "table", true)
-
-	if config then
-		vim.lsp.config(server, config)
-	end
-	vim.lsp.enable(server)
-end
-
 ---Convert number (0/1) to boolean
 ---@param value number @The value to check
 ---@return boolean|nil @Returns nil if failed