Roadmap entry — Phase 3. Surfaced 2026-05-01 during PC-056 architectural conversation. Project lead's preferred long-term contribution architecture.

Why

PC-059 (manual PR review) is the cheap stepping-stone. PC-060 is the end-state contribution flow that lowers barrier to a single CLI invocation while keeping safety guarantees:

• Contributors don't need HF accounts or tokens
• Single source of truth for what's accepted (CI gate)
• HF token is held by ATLAS infrastructure only — no user-supplied secret leak vectors
• Auto-merge on green = zero-touch contribution at maintainer's end

Architecture

user CLI: atlas lens publish gemma-4b
   |
   v
[ATLAS-controlled upload endpoint]
   |
   v
[GHA validation pipeline]
   - safetensors-only constraint (rejects pickle)
   - tensor shape + dim sanity vs declared model
   - load + score against held-out validation set
     (good/bad pairs — verifies Lens isn't poisoned)
   - license + model-card scrape
   |
   v (on pass)
[ATLAS HF org account uploads artifacts]
   |
   v
[Registry merge bot opens + auto-merges PR with HF link]
   |
   v
Downstream: atlas model list shows new entry on next pull

What this requires

• Upload endpoint (cheap object storage + auth)
• GHA runners with GPU access (for Lens validation step)
• ATLAS HF org account + token in CI secrets
• Held-out validation set (designed alongside PC-058 / PC-059)
• Registry merge bot (PR auto-merge once CI greens)
• Revocation flow (pull registry entry + delete from HF if discovered bad post-merge)

Trust gate

Static security check is limited (cannot detect poisoned weights from the binary alone). The validation set is the actual trust gate — submission must produce sensible scores on known good/bad pairs before merge. Worth designing the validation suite alongside the submission pipeline so we don't ship the upload path before the gate exists.

Why Phase 3

• Real infrastructure cost (storage, GPU runners, secret management)
• Justifies the build only after PC-059 produces enough submission volume to feel the friction
• Validation suite design itself is a project (likely PC-060.1)

Dependencies

• PC-059 must land first (volume + validation criteria from manual review experience)
• PC-058 validation set design (the "good/bad pairs" gate inputs)