swath 0.2.0

What's Changed

• just release: emit the post-release -SNAPSHOT bump commit too by @sagiba in #66
• Make the sim's position sensor swappable, and race candidate cures over captured listings by @sagiba in #67
• Put the remaining-work estimate behind a seam, and port the race's promoted sensor by @sagiba in #68
• Make the simulator honest about serial tails: consume the engine gate chain, fix the probe:page ratio, add per-decision gate visibility by @sagiba in #69
• Cure the wide-flat serial tail: a raceable tail_floor mode for the owner-split child-tail floor by @sagiba in #70
• Turn the sensing/tail-floor pair on by default by @sagiba in #79
• replay-server: serve open-upper-bound delimiter rollups through the native skip-scan by @sagiba in #80
• Add the tail-phase occupancy metric: last-N% window in-flight + wall share by @sagiba in #81
• Count the open-frontier skip and attribute its drained keys by @sagiba in #82
• chore: close the serial-tail review punch list, and stop the toggles line calling the documented rollback unsupported by @sagiba in #86
• engine: close the top scope so its rightmost mass stops being unsplittable (porotomo 95% serial -> 0%, wall -36%) by @sagiba in #88
• sim: condense production comments to current contracts, reconcile the simulator docs by @sagiba in #89

Full Changelog: v0.1.0...v0.2.0