SOURCES.md: clarify YCB-Sight uses the original GelSight sensor (not Mini) — primary reason for exclusion, with viral-copyleft license as secondary

README: full rewrite — 513 → 198 lines (~1-2 min read), all stale numbers refreshed (fota_labeled 29,494→26,394, threedcal 36,270→6,924, gelslam 89,612→114,019, real_tactile_mnist 56,723→30,956, etc); single composition table + 4-bullet pipeline summary + compact citation list; kept SOURCES.md as the deep-dive doc with stale-number fixes.

UniT: re-ingest with contact filter (11,340 → 387 kept); fix gel_variant to markered (gel has visible dot pattern). Update docs: remove TVL (was DIGIT not Mini), add to Investigated. Grand total: 852,915 frames.

SOURCES.md: remove duplicate Touch-and-Go bullet (stale 'Not yet ingested' line contradicted the new 'wrong GelSight model' explanation above it)

remove touchandgo: uses ORIGINAL GelSight (white illumination, 640x480 flat-channel R~G~B~137) not Mini. Verified via channel-mean signature mismatch with all other Mini sources (B>G>R with 30+ grey-level spread). Document reason in SOURCES.md 'Investigated but not included'. Bumps real total from 748,024 to 745,958 frames.

docs: add Touch-and-Go (## 12) + TVL (## 13) sections to SOURCES.md; add YAML configs + composition rows for both new sources; tagline updated to ~1.1M frames

docs: SOURCES.md add ## 10 UniT + ## 11 TacQuad sections, update all stale row counts (fota_unlabeled, RTM, sims, feelanyforce, etc), add Channel-order normalization section; README: update header tagline frame count

SOURCES: switch samples_100 → samples_40 (4x10 grids)

SOURCES: add authors-vs-ours RTM comparison + explain why we use seq variant

SOURCES: add sim_tactile_mnist + sim_starstruck sections, RTM/gelslam rule updates, TacQuad note

SOURCES: clarify RTM timestamp-based frame picker

Add SOURCES.md — per-subset intro, processing, stats, and 100-image samples