Cardano Updates

WalletAuthModal swallowed the wallet's actual signData exception and
replaced it with "Failed to sign nonce. Please try again." On the UTXOS
smart wallet, signData fails inside the provider with a specific error
("Etwas ist schiefgelaufen") that we were discarding, leaving no way to
diagnose why authorization fails on mobile while getNonce succeeds
server-side.

Surface the underlying message in both the toast and console.error,
while keeping the friendly cancel/reject handling on top.

Co-Authored-By: Claude Fable 5 <[email protected]>

The final ledger-state query cardano-cli issues while balancing a
transaction. Return the chain's treasury and reserves pots (from the network
state) wrapped in the single-element result array, so the wire shape is
[ [treasury, reserves] ], matching cardano-node. Values are signed because
Coin is an Integer in the ledger.

With this, GetStakePools + GetDRepState + GetAccountState cover the full
query set cardano-cli sends, and `cardano-cli conway transaction build`
completes against Dingo, producing a valid Tx ConwayEra (verified on a Conway
devnet with cardano-cli 11.0.0.0).

Depends on the gouroboros GetAccountState query type; requires a gouroboros
release and a go.mod bump before this builds in CI.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Signed-off-by: Chris Guiney <[email protected]>

The second ledger-state query cardano-cli issues while balancing a
transaction (after GetStakePools). Like the others, leaving it unhandled
tore down the local-state-query connection.

Return the registration state of the requested DReps — or of all DReps when
the credential set is empty (matching the Haskell ledger's "empty means
all") — as a map of stake credential -> {expiry epoch, optional anchor,
deposit}, wrapped in the single-element result array cardano-cli expects.
The wire shape was verified against cardano-node: an empty result is the
CBOR `81 a0` ([ {} ]) — note gouroboros' own DRepStateResult client type
omits that wrapper, so cardano-node's bytes are the reference, not the type.

Verified with cardano-cli 11.0.0.0 against the Conway devnet:
`query drep-state --all-dreps` now returns `[]`, matching cardano-node, and
`transaction build` progresses past GetDRepState.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Signed-off-by: Chris Guiney <[email protected]>

cardano-cli issues the GetStakePools ledger-state query while balancing a
transaction (e.g. `transaction build`). Dingo did not handle it, so the
query returned an "unsupported query type" error, which tears down the
local-state-query connection — the client sees
`BearerClosed "<socket: 11> closed when reading data"`.

Implement the query: return the key hashes of the currently active
(registered, non-retired) stake pools as a CBOR set (tag 258) of pool IDs.
cardano-cli is strict about the encoding — a plain (untagged) array fails to
decode with "expected tag", and an unsorted set fails with "Canonicity
violation while decoding Set" — so the IDs are emitted in ascending
canonical byte order, wrapped in the single-element result array the
query's result type decodes from.

Adds a Database.GetActivePoolKeyHashes wrapper over the existing metadata
store method. Verified end-to-end against a Conway devnet with cardano-cli
11.0.0.0: `query stake-pools` now returns the pool set and decodes
successfully, matching cardano-node.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Signed-off-by: Chris Guiney <[email protected]>

Koz/976

Signed-off-by: cryptodj413 <[email protected]>

Convert demand analysis to annotate ANF

Signed-off-by: Chris Gianelloni <[email protected]>