Add PRML manifest schema (#5673)

* Add PRML manifest schema

PRML — Pre-Registered ML Manifest — is an open CC BY 4.0 specification
for committing machine-learning evaluation claims to a SHA-256 hash
before the experiment runs.

The schema validates the eight required PRML v0.1 fields plus optional
v0.2 RFC additions (streaming variant, runner attestation, revocation).
File patterns target *.prml.yaml, manifest.prml.yaml, and the
prml-manifest.{yml,yaml} convention.

Both schema versions are JSON Schema 2020-12 conformant and validated
against 32 locked conformance vectors (12 v0.1 + 8 v0.2 + 12 v0.1
inputs against v0.2 schema for backwards-compat). Detail at
https://spec.falsify.dev/schema/.

Spec author: Studio 11 Turkey Ltd. Şti. (hello@studio-11.co).
v0.1 stable; v0.2 RFC freeze 2026-05-22 23:59 UTC.

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: Studio 11 <hello@studio-11.co>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: 3 people

src/api/json/catalog.json

@@ -5269,6 +5269,22 @@
       "fileMatch": [".pre-commit-hooks.yml", ".pre-commit-hooks.yaml"],
       "url": "https://www.schemastore.org/pre-commit-hooks.json"
     },
+    {
+      "name": "PRML manifest",
+      "description": "Pre-Registered ML Manifest — open spec for committing ML evaluation claims to a SHA-256 hash before the run (CC BY 4.0). https://spec.falsify.dev/v0.1",
+      "fileMatch": [
+        "*.prml.yaml",
+        "*.prml.yml",
+        "manifest.prml.yaml",
+        "prml-manifest.yaml",
+        "prml-manifest.yml"
+      ],
+      "url": "https://spec.falsify.dev/schema/prml-v0.1.schema.json",
+      "versions": {
+        "v0.1": "https://spec.falsify.dev/schema/prml-v0.1.schema.json",
+        "v0.2-rfc": "https://spec.falsify.dev/schema/prml-v0.2.schema.json"
+      }
+    },
     {
       "name": ".phrase.yml",
       "description": "Phrase configuration file",