docs(demo): add live SR income-level snapshot for IND-NSR-0001..0015

Captured via DCI search-sync against the OpenG2P playground on
2026-05-20. UIN / Name / income_level only — used in the demo deck
to set audience expectations about which Social Registry records
the is_poor predicate will match before the federated enrollment
runs.

Author: gonzalesedwin1123

scripts/demo/SPDCI_SR_INCOME_SNAPSHOT.md

@@ -0,0 +1,25 @@
+# Social Registry — Income Level Snapshot
+
+Live snapshot from OpenG2P's Social Registry playground
+(`partner-nsr.play.openg2p.org`), fetched via DCI search-sync against the
+15 demo identifiers `IND-NSR-0001` through `IND-NSR-0015`.
+
+Captured on 2026-05-20.
+
+| #   | UIN            | Name             | income_level |
+| --- | -------------- | ---------------- | ------------ |
+| 1   | `IND-NSR-0001` | Tomasz Novak     | low          |
+| 2   | `IND-NSR-0002` | Sofia Petrovic   | low          |
+| 3   | `IND-NSR-0003` | Milan Novak      | low          |
+| 4   | `IND-NSR-0004` | Daniel Kauri     | low          |
+| 5   | `IND-NSR-0005` | Leila Haddar     | low          |
+| 6   | `IND-NSR-0006` | Niko Cole        | low          |
+| 7   | `IND-NSR-0007` | Malik Adeyemi    | medium       |
+| 8   | `IND-NSR-0008` | Priya Menon      | medium       |
+| 9   | `IND-NSR-0009` | Rin Lee          | high         |
+| 10  | `IND-NSR-0010` | Omar El-Hadi     | low          |
+| 11  | `IND-NSR-0011` | Aiko Tanabe      | high         |
+| 12  | `IND-NSR-0012` | Reyna Brooks     | low          |
+| 13  | `IND-NSR-0013` | Rafael Duarte    | low          |
+| 14  | `IND-NSR-0014` | Elna Voss        | low          |
+| 15  | `IND-NSR-0015` | Arlo Duarte      | low          |