How do I open a photo from Mac Finder in Lightroom?

Question

Here's the problem: I frequently need to search for photos in the Mac Finder (I actually use HoudahSpot and Path Finder, but it's similar with an exception I note below). I can search for keywords, like "yosemite." But the Finder and QuickLook are rather limiting; they don't reveal much photo metadata if any, and of course they show originals, since any edits or developments are in LR, not in the files themselves. And one does not export willy nilly, for that would defeat the purpose of having a DAM.
So far, OK (I'd love to have LR integrated into more applications, as Aperture and iPhoto are in some "Insert" menus, or in dialog boxes, but that would be too useful...maybe the new Photos application? ). So I'm looking at a jpeg (because Apple still doesn't have support for my RAWs, but same result) that I think I wanna use. And I want to find it in Lightroom. But if I double click it, of course I'd get Photoshop or whatever application is the default for images. In Path Finder or some other utilities, unlike the Finder, I can actually select open in LR. But when LR does open, it shoots me to the import module. Not what I want.
So, if one is looking at an image file in Finder, or otherwise outside LR, how does one easily and quickly go to that image in LR, in the Library module? sort of a "find in LR" command?
I was looking around for Applescripts or Automator workflows, but only find ones that import, not find. There's an automator "find in iPhoto" step, but interestingly the Aperture one is deprecated. I thought I might have been able to modify it.
GraphicConverter has a very nice "service," "GraphicConverter: Open in Browser" that does exactly what I want. But I couldn't find one for LR (and it's kinda hard to search successfully online for "services" related to LR, and I didn't find any services).
Ideas?

Answer 1

I have written the Lr (plugin) side, and created the capability to use Windows "Send to..." context menu to send a list of folders/files to Lightroom for selection.
Here is the content of the god-aweful command file which does it in Windows, 'Lightroom File Selector.bat':
@echo off
for %%x in (%*) do (
    call :concat %%x
start "%~n0" "lightroom://com.robcole.FileListener/Select/%pstr%"
exit
:concat
set a=%1
set lc=%a:~-1%
if "%lc%%lc%"=="""" (
    set pstr=%pstr%[%a:~1,-1%];
) else (
    set pstr=%pstr%[%a%];
Note: what it's doing is wrapping/separating all the folder/filenames received as arguments to the bat file, then appending them to the base url, for example:
If you select folder "C:\MyFolder' and file 'C:\MyFiles\myfile.jpg' in Windows Explorer, then invoke the 'Send to' context menu item (or drag and drop directly on bat file), it will send the URL:
lightroom://com.robcole.FileListener/Select/[C:\MyFolder];[C:\MyFiles\myfile.jpg];
to whichever app is registered to handle it, i.e. Lightroom, which parses the plugin ID, and passes it to the plugin, which then parses the paths and then does the same thing as the "Choose Files Via OS & Select In Lightroom" script.
Although I haven't got the Mac end, the goal would be the same - somehow translate the target folder/file paths from the format they're in to the requisite URL format and submit to OS, which submits to Lr, which submits to plugin.
You can download the plugin here:
http://robcole.com/Rob/_common/DownloadEasy/Download.cfm?dir=FileListenerLrPlugin&file=rc_ FileListener_(lrplugin)_1.0.zip
There is no web page nor documentation for it, yet.
Rob