v0.1.0.20

Changes

• Merge pull request #31 from PaulTerrasi/fix/integration-test-relative-dates (a5e0176)
• review fixes: harden _temp_dirs field + cleanup-test try/finally (d6875e3)
• review fixes: clean up temp dirs in unit tests + cite SDK code path (ea59528)
• agent: hoist shutil import to module top (da30c27)
• review fixes: tighten temp-dir cleanup + UTC-anchor integration fixtures (73414c3)
• store: document wall-time anchor on read_recent_{feedback,runs} (818fd1f)
• curation: clean up spilled system-prompt temp dir after run (01a372f)
• tests: anchor reflection fixtures to date.today() (dce9d02)
• curation: spill system prompt to file to avoid ARG_MAX (9b88d8b)