Cardano Updates

Signed-off-by: Eric Torreborre <[email protected]>

Release 13.7.0.3

Bumps [webiny/action-conventional-commits](https://github.com/webiny/action-conventional-commits) from 1.3.1 to 1.4.2.
- [Commits](https://github.com/webiny/action-conventional-commits/compare/faccb24fc2550dd15c0390d944379d2d8ed9690e...7f91b1595ca1951cdb671ddc9f07a49081ec5b69)

---
updated-dependencies:
- dependency-name: webiny/action-conventional-commits
  dependency-version: 1.4.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [github.com/blinklabs-io/gouroboros](https://github.com/blinklabs-io/gouroboros) from 0.153.1 to 0.165.3.
- [Changelog](https://github.com/blinklabs-io/gouroboros/blob/main/RELEASE_NOTES.md)
- [Commits](https://github.com/blinklabs-io/gouroboros/compare/v0.153.1...v0.165.3)

---
updated-dependencies:
- dependency-name: github.com/blinklabs-io/gouroboros
  dependency-version: 0.165.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Updated CDDL schema and documentation to version 2, reflecting changes in specVersion and encoding principles.

New component `components/asteria-stub/` ships as a thin Debian image
with cardano-cli + jq + bash. Its only job is to host composer scripts
at `/opt/antithesis/test/v1/stub/`:

  - parallel_driver_heartbeat.sh — short tick, emits Sometimes
  - eventually_alive.sh         — post-fault: pings p1/p2/p3, Always
  - finally_alive.sh            — post-workload: pings p1/p2/p3, Always

All three scripts have small budgets that fit comfortably under
duration=1h post-fault windows, so they always run to completion (no
"command not started/finished" findings).

The container itself just sleeps; this is intentional — the stub is
the experimentation harness for evolving property checks, not a real
workload. Real game logic lives in components/asteria-player/.

Image tag bootstraps via a paired git tag `asteria-stub-v0` so
publish-images can resolve it on first build. A follow-up commit will
pin to the resulting content digest.

ci: publish crates all at once

Bumps the actions-deps group with 2 updates: [oasdiff/oasdiff-action](https://github.com/oasdiff/oasdiff-action) and [scala-steward-org/scala-steward-action](https://github.com/scala-steward-org/scala-steward-action).


Updates `oasdiff/oasdiff-action` from 0.0.39 to 0.0.43
- [Release notes](https://github.com/oasdiff/oasdiff-action/releases)
- [Commits](https://github.com/oasdiff/oasdiff-action/compare/f8cb9308b42121e793f835bd14c0b8090420430c...c002f996c3d084acf62ea6dd4f2e7a57b7bc2a35)

Updates `scala-steward-org/scala-steward-action` from 2.86.0 to 2.88.0
- [Release notes](https://github.com/scala-steward-org/scala-steward-action/releases)
- [Commits](https://github.com/scala-steward-org/scala-steward-action/compare/026472ebc0e1f80577b240b249e3dc1494e7041b...b186ab858ce163f9af7b016fac32cfb3f2c2f503)

---
updated-dependencies:
- dependency-name: oasdiff/oasdiff-action
  dependency-version: 0.0.43
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: actions-deps
- dependency-name: scala-steward-org/scala-steward-action
  dependency-version: 2.88.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: actions-deps
...

Signed-off-by: dependabot[bot] <[email protected]>

Signed-off-by: William Hankins <[email protected]>

- Remove trailing period from hero title
- Remove unused spoCta field
- Revert viewport-height positioning changes, keep font and button size updates

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

- Update site title to "Mithril | Trustless state proofs for Cardano"
- Rewrite hero standfirst to lead with the tech and include use-case examples
- Make hero section full-viewport-height on tablet with centered layout
- Reduce hero heading font size slightly (4rem → 3.5rem) for better fit

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>