synth v0.75.0

What's Changed

• plan(v0.75): "The call site that no test has ever reached" — and move the release anchor to v0.74.0 by @avrabe in #1392
• RQ-75-CALLSITE (#1269): drive gate() and main() — 10 of 10 mutations that survive --self-test now go red by @avrabe in #1393
• RQ-75-CLOSEWINDOW (#1391): drive closed_since against a recorded gh response — the fix v0.74 shipped untested by @avrabe in #1394
• RQ-75-FLOORBIND (#1331): bind the floor to its derivation — and three other defeats of the same oracle, closed by @avrabe in #1395
• RQ-75-REPLAY (#1318): the gate now asks what the object CONTAINS — and a replay is refused on every CI run by @avrabe in #1396
• RQ-75-APTSHAPE (#1062): the detector was blind to a POSITION, not a word — and its decision had never been driven by @avrabe in #1397
• RQ-75-PROBEINPUT (#1223): probe each shape at six inputs — and report that per-arm potency did NOT improve by @avrabe in #1398
• RQ-75-PINDEBT3 + RQ-75-ARCHMODEL: no pin closed this release, and saying so is the deliverable by @avrabe in #1399
• cold review round 1: the freshness probe was defeatable AND deletable, four false statements, and 10 of 19 mutations walked through by @avrabe in #1400
• cold review round 2: round 1's freshness fix protected the wrong module, and the ARCHMODEL filing was invisible to its own gate by @avrabe in #1401
• release(v0.75.0): "The call site that no test has ever reached" — the cut by @avrabe in #1402

Full Changelog: v0.74.0...v0.75.0