Cardano Updates

Signed-off-by: Roland Kuhn <[email protected]>

* Add files via upload

* Add files via upload

* Update apps.js (adding Dune to the Cardano Apps)

git add .
git commit -m "Add Dune to App Showcase"
git push origin main

* fix: correct Dune showcase entry to use website field and valid tags

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Co-authored-by: Tommy <[email protected]>

- Bring back NumOfDiskSnapshots
- Eliminate dead code
- renaming and codestyle

This commit brings back the fix from https://github.com/IntersectMBO/ouroboros-consensus/pull/1814, which synchronises the process of taking a ledger state snapshot and copying of blocks into the immutable DB.

- LedgerDBEnv: rename ldbLastSnapshotWrite to ldbLastSnapshotRequestedAt. Track the request time rather than the time a snapshot actually finished.
- implTryTakeSnapshot: add a `delay` argument. How long should we block before actually taking the snapshot after determining the slots to snapshot
- add `cdbSnapshotDelayRNG` and use this to determine how long we should wait before taking a snapshot
- add orphan `NoThunks` `StdGen` instance
- add `cdbsSnapshotDelayRNG to `ChainDbSpecificArgs`
- add `onDiskSnapshotDelayRange` to `SnapshotPolicy` to allow configuration of the delay between a snapshot being requested and being taken
- add LedgerDB snapshot delay trace events. Use these events in the test suite to ensure we don't add blocks while snapshots are occurring (and therefore make an accurate number of snapshots).
- add a test ensuring that blocks can be added while a snapshot is enqueued
- ledgerDbMaintenaceThread -> ledgerDbMaintenanceThread
- Trace slots of delayed snapshots

It is no longer needed by the predictable snapshotting logic.

Superseded by the rework of the snapshot policy for predictable snapshots, with
dedicated new tests

LedgerDB: implement predictable snapshotting

Replaces the Adrestia landing content on /exchanges (legacy Input Output
wallet SDK) with a brief, non-technical introduction distilled from the
two current developer-portal pages:

- https://developers.cardano.org/docs/build/integrate/overview/
- https://developers.cardano.org/docs/build/integrate/exchange-integrations/

Deep technical material (CIP-55 math, fee formulas, confirmation depth,
CLI samples) stays on the developer portal; this page links out to it.

i18n: uses new content-matched ids so non-English locales fall back to
English until Crowdin re-translates. Orphaned Adrestia ids are left for
Crowdin sync to prune; hand-editing ja/de/es/vi code.json here would
just noise the translator diff.

Components: reuses existing Layout primitives (RoleCard, HighlightCallout,
CtaOneColumn, CtaTwoColumn, SiteHero, BoundaryBox, BackgroundWrapper,
Divider, SpacerBox, TitleWithText, OpenGraphInfo). No new components,
no new dependencies, yarn.lock untouched.

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

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

* New translations code.json (Spanish)

* New translations code.json (Japanese)

* New translations navbar.json (Japanese)

* New translations code.json (German)

* New translations code.json (Vietnamese)

* New translations navbar.json (Spanish)

* New translations navbar.json (German)

* New translations navbar.json (Vietnamese)

* New translations agriculture.md (German)

* New translations agriculture.md (German)

* New translations footer.json (German)

* New translations communities.md (German)

* New translations navbar.json (German)

* i18n: update translations from Crowdin [skip ci]

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Co-authored-by: Crowdin Bot <[email protected]>