Gadoes ships the missing safety valve

A circuit breaker is the bit of plumbing that stops a flaky third-party service from dragging the whole product down - when something starts failing, it trips open and your app routes around it instead of hammering a dead endpoint. Gadoes's fork has been referencing that behaviour for weeks, but the actual code was sitting untracked on a laptop. This commit finally puts it in the repo, alongside its tests.

Two smaller things ride along: a placeholder for the EU jurisdiction marker gets replaced with the proper flag in the EUR-Lex integration (EUR-Lex is the EU's official legal database), and a real Supabase URL that had leaked into an example config gets scrubbed. The rest is housekeeping - internal planning docs and stray files swept out and added to the ignore list.