feat: /api/stats endpoint

feat: weekly PyPI stats snapshot (1854 total, 912 last 7d)

sync: add Bench/PUAC pages, nav links, and new endpoints from hf_space_dashboard source

feat: add hits_by_mode citation panel, schema_version footer, BGE health row, g2_grep/g2_hooks utility blocks

feat: retrieval distribution panel (schema v1.6)

fix: update demo snapshot to v1.0 numbers

deploy CTX dashboard demo (redacted snapshots)

initial commit