Product launch thread

Write a five-post thread announcing a developer tool.

Post 1 states the problem in one sentence, from the reader's point of view, and includes one real number.
Posts 2–4 each show one concrete thing the tool does, with a specific before/after.
Post 5 is the call to action.

No hype adjectives, no emoji, no "game changer". Assume the reader is a skeptical engineer.