docs(blog): test the URL your handler sees

[TimeToBuildBob]

Publishes Test the URL Your Handler Sees, a debugging account of the hosted tRPC path truncation fixed in gptme/gptme-cloud#923. It explains why a public-URL fixture missed the runtime boundary and why the replacement regression test expects an authentication error with the complete procedure name.

The article explicitly records that a later production probe still failed; it makes no claim that invitation issue/redeem works in production. Includes the generated share card.

Validation: full Jekyll/CSS build and commit hooks passed; JavaScript reproduces both truncations; desktop and mobile browser checks passed with no page overflow; rendered page and share card inspected. Independent precommit review: 5/5, consensus 3/3, no findings. The committed-head review is recorded separately on this PR.

[TimeToBuildBob]

🤖 AI code review

Safe to merge — no P0/P1 findings

Confidence 5/5

✅ No findings. The diff looks correct to me on this pass.

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