Cardano Updates

Bumps [github.com/gin-contrib/zap](https://github.com/gin-contrib/zap) from 1.1.6 to 1.1.7.
- [Release notes](https://github.com/gin-contrib/zap/releases)
- [Commits](https://github.com/gin-contrib/zap/compare/v1.1.6...v1.1.7)

---
updated-dependencies:
- dependency-name: github.com/gin-contrib/zap
  dependency-version: 1.1.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Signed-off-by: Akhil Repala <[email protected]>

Signed-off-by: Akhil Repala <[email protected]>

caribic: add denom registry benchmark

Signed-off-by: Akhil Repala <[email protected]>

Signed-off-by: Akhil Repala <[email protected]>

Signed-off-by: Ales Verbic <[email protected]>

Signed-off-by: Ales Verbic <[email protected]>

Signed-off-by: Ales Verbic <[email protected]>

Signed-off-by: Ales Verbic <[email protected]>

Bumps [actions/setup-go](https://github.com/actions/setup-go) from 6.3.0 to 6.4.0.
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](https://github.com/actions/setup-go/compare/4b73464bb391d4059bd26b0524d20df3927bd417...4a3601121dd01d1626a1e23e37211e3254c1c06c)

---
updated-dependencies:
- dependency-name: actions/setup-go
  dependency-version: 6.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bumps [github.com/buger/jsonparser](https://github.com/buger/jsonparser) from 1.1.1 to 1.1.2.
- [Release notes](https://github.com/buger/jsonparser/releases)
- [Commits](https://github.com/buger/jsonparser/compare/v1.1.1...v1.1.2)

---
updated-dependencies:
- dependency-name: github.com/buger/jsonparser
  dependency-version: 1.1.2
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

T002: Add scripts/check-no-cardano-api.sh
T009-T010: Fix stale CardanoApiEra references in Eras.hs comments
T011: Haddock builds clean, zero cardano-api cross-references
T019: Remove cardano-api from README key dependencies

Signed-off-by: Ales Verbic <[email protected]>

Dijkstra deserializes Conway CBOR identically (backwards compatible).
Reuse the existing 152 Conway golden files for Dijkstra round-trips.

One file (42.cbor) is skipped: it contains a certificate without
deposits, which Conway accepts but Dijkstra rejects
("Certificates without deposits are no longer supported").

151 new Dijkstra serialization tests, 420 total (up from 268).

During catch-up, connection recycling from stall detection causes
pipeline resets, TIME_WAIT socket exhaustion on the source port,
and dropped rollbacks that slow sync far more than the stall itself.

Extend grace period, plateau detection, and recycle cooldown by 5x
when the node is not at tip. Once the node reaches tip, thresholds
return to normal for responsive stall recovery.

Signed-off-by: wcatz <[email protected]>
Signed-off-by: wcatz <[email protected]>

The cardano-api removal unblocks DijkstraEra at runtime.
34 new tests now run (268 total, up from 234).

4 remaining pending:
- 2x "todo: add test data" (pre-existing)
- 1x Dijkstra serialization golden (needs CBOR files)
- 1x boundedEnumLaws (needs investigation)

Delete orphaned Cardano.Api.Gen module (2056 lines) and remove
cardano-api from test build-depends. Also remove 10 transitive
test deps that were only needed by Gen.hs.

Verified:
- Zero Cardano.Api imports in lib/ and test/
- cardano-api absent from cabal dependency plan
- 234/234 tests pass, 0 assertions modified
- 152 CBOR golden round-trips byte-identical

When the node is behind tip, outbound connections bind to the listen
port (3001) for peer sharing. Connection churn during catch-up creates
TIME_WAIT sockets that block reconnection to the same peer for 60s,
causing a death spiral where the node can't reach peers and falls
further behind.

Add IsAtTipFunc to ConnectionManagerConfig. When provided and returning
false, outbound connections use ephemeral ports instead of binding to
the listen port. Peer sharing is not useful during catch-up anyway.

Also extend stall detection thresholds 5x during catch-up to reduce
connection recycling that triggers the TIME_WAIT exhaustion.

Signed-off-by: wcatz <[email protected]>
Signed-off-by: wcatz <[email protected]>