The PR workflow pins CI_E2E_FILENAME to a commit hash, so its block data
is frozen and cannot surface encoding changes in go-algorand. New block or
transaction fields are fatal rather than ignorable, because the SDK decodes
with ErrorIfNoField set, so an unknown map key aborts block import. The
unit tests cannot catch it either: they encode and decode with the same SDK
structs, which round-trips regardless of what algod puts on the wire.

The PR workflow pins CI_E2E_FILENAME to a commit hash, so its block data
is frozen and cannot surface encoding changes in go-algorand. New block or
transaction fields are fatal rather than ignorable, because the SDK decodes
with ErrorIfNoField set, so an unknown map key aborts block import. The
unit tests cannot catch it either: they encode and decode with the same SDK
structs, which round-trips regardless of what algod puts on the wire.

The nightly algod now emits the pqsig key in SignedTxn. The previously
pinned SDK (2026-06-24) predates the post-quantum signature types, so
go-codec rejected the unknown key and block import failed with
"no matching struct field found when decoding stream map with key pqsig".

The nightly algod now emits the pqsig key in SignedTxn. The previously
pinned SDK (2026-06-24) predates the post-quantum signature types, so
go-codec rejected the unknown key and block import failed with
"no matching struct field found when decoding stream map with key pqsig".

* Don't allow filtering on the pq signatures

recursiveTagFields passed the raw codec tag down when recursing into a
struct field, so a tag like `codec:"txn,required"` produced tag paths of
the form `txn,required.*`. Every ignoreTags lookup for a nested field
then missed, and the generated filter tag would carry the encoder option
in its name.

Parse the tag name once, before recursing, and use it for both the
nested path and the leaf's full tag. A tag that only carries options
(`codec:",omitempty"`) names nothing, so it is now treated as untagged
at any level rather than only at leaves.

No SDK struct-typed field carries tag options today, so the generated
map and tags doc are unchanged.

recursiveTagFields passed the raw codec tag down when recursing into a
struct field, so a tag like `codec:"txn,required"` produced tag paths of
the form `txn,required.*`. Every ignoreTags lookup for a nested field
then missed, and the generated filter tag would carry the encoder option
in its name.

Parse the tag name once, before recursing, and use it for both the
nested path and the leaf's full tag. A tag that only carries options
(`codec:",omitempty"`) names nothing, so it is now treated as untagged
at any level rather than only at leaves.

No SDK struct-typed field carries tag options today, so the generated
map and tags doc are unchanged.

The BlockHeader gained a Load field (codec "ld") and CongestionTax
("ct") in go-algorand-sdk. Bump the dependency so the algod importer
can decode current nightly blocks; otherwise GetBlock fails with
"no matching struct field found when decoding stream map with key ld".

The BlockHeader gained a Load field (codec "ld") and CongestionTax
("ct") in go-algorand-sdk. Bump the dependency so the algod importer
can decode current nightly blocks; otherwise GetBlock fails with
"no matching struct field found when decoding stream map with key ld".

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>