If this is true then I love you so much.

Here is the real question then, was it in orignally and just wasnt solved until a month before luclin? Or was it added partway through velious?

Or was it in from the start of kunark and just took a while to solve

No, it was added at the start of velious because that's when the NPC with the quest text for it appeared at the SK guild in Cab. I remember it being somewhat broken and then later someone solved it, a little after velious release.

First green mist was finished in solusek ro server (my server), it was done shortly after the chardok revamp . if i recall correctly the quest existed earlier but the book from chardok was missing.

Quest line was broken/unfinished during Kunark. After the Lord of Pain Khukri (which was added/fixed well post Kunark's release, the quest line just stopped until the Chardok revamp.

going iksar sk for greenmist