docs: conclude lethe collector task

collector: persist skipped-only parser progress

docs: record collector endpoint and outbox checks

collector: enforce outbox cap before replay

docs: record collector final fixes

collector: fix daemon drain and backfill start

docs: update collector verify notes

collector: preserve valid rows around ingest errors

collector: skip rejected rows after partial ingest

collector: add lethe-collector cli

docs: clarify collector plan assumptions

docs: plan lethe collector implementation

collector: add Claude Code parser

docs: add lethe task specs (server, collector, search)