Docs: Add DepthAPI project overview and extraction libs

Docs: Comprehensive dataset documentation update

Add OPEA documentation chunks

fix: remove incorrect dataset_info from README that corrupted the viewer

docs: elaborate README with sources, schema, ingestion pipeline, namespace breakdown, and library hyperlinks

feat: clean full export of technical corpus to root

chore: purge all files to resolve row ballooning issue

feat: restore full 249k+ technical corpus with batched upload pipeline

chore: clear old shards before full restore

Refresh dataset from local Supabase low-memory exporter

Refresh dataset from local Supabase low-memory exporter

Refresh dataset from local Supabase low-memory exporter

Add postmortems backfill as separate split

Add dataset card

Initial release of technical documentation corpus

Initial release of safe technical documentation

Initial release of safe technical documentation