synth v0.66.0

What's Changed

• chore(deps): bump wasm-encoder from 0.256.0 to 0.258.0 by @dependabot[bot] in #1198
• chore(deps): bump wit-component from 0.256.0 to 0.258.0 by @dependabot[bot] in #1196
• plan(v0.66): scope the release — "Watched, fixed, or deleted" (7 artifacts, 1 carried) by @avrabe in #1237
• feat(gate): RQ-66-PINDEBT (#242) — the known-open pin count is a ratchet, derived from the oracles' own tables by @avrabe in #1242
• test(survey): RQ-66-DELETE (#242) — the four DEAD sites are reachable; nothing deleted, the reach probe becomes a gate by @avrabe in #1239
• fix(claims): RQ-66-PINDEBT (#242) — teach _pin_table to count a statically-determinable DictComp by @avrabe in #1247
• feat(toolchain): RQ-66-VARVE (#1236) — rotate the pin, and make one CI job read it by @avrabe in #1244
• fix(selector): RQ-66-BOTHWRONG (#1210) — triage the five both-selectors-wrong classes to four root causes by @avrabe in #1249
• fix(mutants): RQ-66-POTENCY (#1189) — probe before scoring, lock the sampling frame by @avrabe in #1248
• test(oracle): RQ-66-UNWATCHED (#1207 #1229 #1230 #1231) — four v0.65 findings watched by @avrabe in #1246
• test(oracle): RQ-66-WATCHED (#1189) — four oracles proven to kill the survey's UNTESTED mutants, and the silent-subset rule mechanized instead of hand-tallied by @avrabe in #1245
• release(v0.66.0): "Watched, fixed, or deleted" — 8 artifacts, 7 implemented, ARCHMODEL deferred a 6th time by @avrabe in #1251
• fix(release): #1189 — land the v0.66 cold review and correct the false headline it found, in every place it propagated by @avrabe in #1253
• fix(oracle): RQ-66-BOTHWRONG (#1210) — un-stale the frozen-anchor mirror that reddened main for five merges (#1255) by @avrabe in #1256
• fix(release): #1189 — the v0.66 release notes' two tag-gate defects: shipped artifacts filed [Unreleased], and two remembered counts by @avrabe in #1258

Full Changelog: v0.65.0...v0.66.0