v0.4.2

What's Changed

• feat(reflow): concurrent engine execution behind a standing behavioral parity gate by @3leapsdave in #166
• feat(reflow): bind the lowest detected memory limit and admit copy buffers against an operator budget by @3leapsdave in #167
• fix(test): drop scheduling-dependent ledger pressure from reflow parity by @3leapsdave in #169
• chore(roles): add gate-integrity and public-surface checklist items by @3leapsdave in #168
• feat(tools): validate role prompts against the vendored schema by @3leapsdave in #170
• test(reflow): add checkpoint-scale throughput profile and corpus scale overrides by @3leapsdave in #171
• feat(reflow): converge collision resolution, durability, and stdin handling into the engine by @3leapsdave in #172
• feat(reflow): emit provenance sidecars from the record-stream engine by @3leapsdave in #173
• fix(reflow): converge the failed-copy reason across record, event, and checkpoint by @3leapsdave in #174
• refactor(reflow): introduce the producer-callback seam for the record-stream runner by @3leapsdave in #175
• feat(index): detect and reclaim stale index set-authority leases by @3leapsdave in #176
• fix(index): remove the set-authority lease when its holder completes by @3leapsdave in #177
• fix(index): make generated run and event identifiers unique under a coarse clock by @3leapsdave in #178
• fix(jobregistry,index): read an exited process as finished, and identify lease acquisitions by entropy by @3leapsdave in #179
• test(reflowthroughput): drive the report builder from parsed product output in a producer-path control by @3leapsdave in #180
• feat(reflow): execute object-store positional sources on the engine by @3leapsdave in #181
• feat(index): crawl durable index builds across parallel journal lanes by @3leapsdave in #182
• feat(reflow): add budgeted partition execution by @3leapsdave in #183
• test(reflowthroughput): harden object-store harness by @3leapsdave in #184
• feat(stalled-recovery): plan-stalled and recover-stalled for managed jobs by @3leapsdave in #185
• feat(provider): ResolveConnectionPool construction policy by @3leapsdave in #186
• feat(cmd): wire index-family construction pools from admitted concurrency by @3leapsdave in #187
• feat(cmd): wire remaining construction pools from admitted concurrency by @3leapsdave in #188
• docs: concurrency guide pool follows admitted concurrency by @3leapsdave in #189
• Reflow: checkpoint writer measure path + atomic file IfAbsent publish by @3leapsdave in #190
• Reflow: dual-domain copy permits and stage attribution by @3leapsdave in #191
• Reflow: dest-biased dual-domain admission by @3leapsdave in #192
• Prepare v0.4.2 release notes and version stamps by @3leapsdave in #193

Full Changelog: v0.4.1...v0.4.2