Changelog #2534

.changelog/unreleased/SDK/2534-invalidate-masp-notes-in-client.md

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+- Reworked the sdk to support the new speculative state of the
+  `ShieldedContext`:\n-`ShieldedContext` now has an extra field to determin its
+  state\n-When calling `gen_shielded_transfer` the context now invalidates the
+  spent notes (if any)\n-The fee unshielding `Transaction` is now built before
+  the actual transaction\n-`find_viewing_key` only requires a shared reference
+  now ([\#2534](https://github.com/anoma/namada/pull/2534))

.changelog/unreleased/improvements/2534-invalidate-masp-notes-in-client.md

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+- The client, when generating a shielded transfer, invalidates the
+  masp notes that have been spent without the need to sync with a node.
+  ([\#2534](https://github.com/anoma/namada/pull/2534))