There’s a particular kind of confidence that comes from building something without excess. Not the loud confidence of billion-dollar funding rounds or glossy launch events—but the quiet certainty of knowing every screw, every line of code, every decision had to justify its existence.   LeanSpark feels like that kind of confidence.   I began reading it at a time when every startup headline seemed to scream “more”—more capital, more valuation, more speed. And here was a book ca