[Tracking] Onboard TerraYield (Meridian) as a federation peer

[mortonanalytics]

Coordination issue (IONe side) for onboarding TerraYield / Meridian (morton-analytics-llc/eo_ag) as a federation peer on the IONe network.

Context

IONe already names TerraYield as reference peer #2 (md/design/ione-substrate.md:17, app-integration-playbook.md:5), but TerraYield has shipped none of the six peer surfaces yet (md/design/foreign-tenant-mapping.md:238, map-view.md:140). IONe v0.1 supports the generic peer path; the TerraYield-specific gaps are the identity broker and an end-to-end test.

IONe-side work

• Identity broker (S0–S7): gate for TerraYield brokered SSO #12 — Identity broker (S0–S7): gate for TerraYield brokered SSO
• E2E test: TerraYield peer renders map/chart/table in workspace shell (AC-6 / OQ-2) #13 — E2E test: TerraYield peer renders map/chart/table in workspace shell (AC-6 / OQ-2)

TerraYield-side work (morton-analytics-llc/eo_ag)

• morton-analytics-llc/eo_ag#15 — reconcile the integration doc (IONe = this repo; Meridian = peer)
• morton-analytics-llc/eo_ag#16 — P0 MCP server /mcp (anchor)
• morton-analytics-llc/eo_ag#17 — P0 resource view-hints (ione_view)
• morton-analytics-llc/eo_ag#18 — P0 context slice + whoami
• morton-analytics-llc/eo_ag#19 — P1 OAuth 2.1 AS (sequence with Identity broker (S0–S7): gate for TerraYield brokered SSO #12)
• morton-analytics-llc/eo_ag#20 — P2 signed webhook push

Sequencing

P0 (eo_ag #16–18) renders Meridian in the demo workspace with no broker dependency → unblocks #13. P1 (eo_ag #19) sequences with the identity broker (#12). Webhooks (eo_ag #20) last.

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Cross-repo epic (TerraYield side): morton-analytics-llc/eo_ag#22

[mortonanalytics]

TerraYield-side status (2026-07-17): Meridian peer work (morton-analytics-llc/eo_ag#22, surfaces #16–#18 there) is parked pending IONe readiness. The gating set, in order: #15 (MCP peer-client), #16 (stub peer + conformance kit — re-scopes #13 off the TerraYield dependency), #17 (contract v1 freeze), #19 (pre-broker authenticated access — FedRAMP-target peers cannot expose unauthenticated surfaces), #18 (ref-rendering/storage boundary), #20 (webhook ingress, P2). When #15–#17 + #19 close, TerraYield builds its surfaces against the conformance kit.

[mortonanalytics]

Landed in #23, merged as d38683a. (The PR body's Closes #12, #13, … list only auto-linked #12 — closing the rest manually.)