Validate canonical comparison manifests

docs/integrations/comparison-bundle.md

@@ -66,7 +66,8 @@ contiguous from one, profile IDs are distinct and nonblank, and
 `succeeded + failed == total`.
 
 A successful result has `status: "succeeded"`, `validationStatus: "passed"`,
-a unique Markdown `reportPath`, and no `error`. A failed result has
+a `reportPath` exactly equal to the canonical `NN-profile-slug.md` filename for
+its position, total, and logical profile ID, and no `error`. A failed result has
 `status: "failed"`, no `reportPath`, and an `error` object with nonblank
 `category` and `message`. Its validation status is absent, `failed`, or
 `skipped`. Error messages are valid UTF-8 and no longer than 1,024 bytes.
@@ -81,10 +82,11 @@ larger workspace.
 
 Weatherreporter recognizes a replaceable bundle only when it exactly satisfies
 the current version, schema, file set, file types, relative-path rules, and
-data-package digest. It rejects unknown manifest fields, multiple JSON values,
-extra entries, symlinks, and future or otherwise unsupported versions. Treat a
-bundle that fails recognition as an ordinary directory, not as a compatible
-bundle.
+data-package digest. JSON field names are case-sensitive canonical names and a
+field may appear only once in each manifest object. It rejects unknown,
+case-variant, or duplicate fields; multiple JSON values; extra entries;
+symlinks; and future or otherwise unsupported versions. Treat a bundle that
+fails recognition as an ordinary directory, not as a compatible bundle.
 
 The manifest contains safe operational provenance, but `data-package.yml` and
 the generated Markdown can contain sensitive weather or location context. Do