No. 002: Every format I have describes work I already did.
Your problem
A résumé, a portfolio, a case study. Those are the three formats available to me, and all three are descriptions of past work, written after the fact, by the person who wants the job. Nobody evaluating me is watching me think. They're evaluating how well I write about having thought.
The reframe
You're not asking how to make a better portfolio. You're asking how to change the verb.
Every format on that list is past tense and self-reported. Those two properties are why they all read the same, and why a hiring manager discounts them automatically. The real question is whether a present-tense, observable format exists at all.
The working theory
The only formats that genuinely show thinking are ones where the outcome isn't known when you start.
A case study has a known ending. That's why every case study ever written is triumphant, and why nobody believes them. The reader knows you picked the project where it worked out. Working on a problem you have not solved yet is the only version a reader can't discount, because you're exposed. You might be wrong in public.
The corollary: the most valuable part of any answer isn't the answer. It's the reframe. Restating someone's question better than they asked it is the clearest possible demonstration of judgment, and it's the one thing a résumé structurally cannot contain.
What I'd do Monday
Answer one real question in public, in a fixed format, with the reframe visible as its own section. Publish the version you tried first and threw away.
Fixed format matters more than it sounds. It makes the thinking comparable across entries, which is what turns a set of posts into evidence rather than a blog.
What I'd need to know to be more sure
Whether anyone will actually send a problem. That's the only untested assumption in this whole idea, and everything else is scaffolding on top of it.
I'd also want to know whether being wrong in public costs more than it earns, and I don't think I can know that until it happens. The honest answer is that I'm about to find out.