docs: remove superseded repository archive copies

docs/MANIFEST.toml

@@ -1,12 +1,5 @@
 # docs/MANIFEST.toml
 # Documentation inventory for akroasis. See standards/DOC-MANIFEST.md.
-#
-# The archive/ subtree IS listed, and the reasoning that first left it out is worth recording because
-# it was right in principle and wrong here. Git is the archive, so a second index of superseded
-# documents duplicates what history already guarantees. But `STANDARDS/doc-manifest-orphan` asks a
-# narrower question — is every file under docs/ accounted for — and an unlisted file is
-# indistinguishable from one nobody noticed. Listing them as superseded answers that without
-# pretending they are current.
 
 [[doc]]
 path = "docs/ARCHITECTURE.md"
@@ -57,19 +50,3 @@ path = "docs/akroasis-mesh.toml"
 type = "authored"
 evergreen = false
 description = "Example mesh configuration section, with the supported hardware and transports."
-
-# ── superseded ────────────────────────────────────────────────────────────────────────────────────
-# Listed so the orphan check can account for them, marked non-evergreen because that is what
-# superseded means. Neither is a current statement about this repository.
-
-[[doc]]
-path = "docs/archive/README.md"
-type = "authored"
-evergreen = false
-description = "Index of completed or superseded documentation kept for historical reference."
-
-[[doc]]
-path = "docs/archive/STANDARDS.md"
-type = "authored"
-evergreen = false
-description = "Superseded project standards, retained as the record of what the rules used to be."