Blake hash support info banner

docs/src/SUMMARY.md

@@ -8,7 +8,7 @@
 * [First Steps with Starknet Foundry](getting-started/first-steps.md)
 * [Scarb](getting-started/scarb.md)
 * [Project Configuration](projects/configuration.md)
-* [`snforge` 0.48.0 Migration Guide](getting-started/0-48-0-migration-guide.md)
+* [Blake Hash Support](getting-started/blake-hash-support.md)
 
 ---
 
@@ -168,3 +168,4 @@
 * [`snfoundry.toml` Reference](appendix/snfoundry-toml.md)
 * [`Scarb.toml` Reference](appendix/scarb-toml.md)
 * [Starknet Foundry Github Action](appendix/starknet-foundry-github-action.md)
+* [`snforge` 0.48.0 Migration Guide](appendix/0-48-0-migration-guide.md)

docs/src/getting-started/blake-hash-support.md

@@ -0,0 +1,25 @@
+# Blake Hash Support
+
+Starting from Starknet version 0.14.1, the network switched from Poseidon hash to Blake hash for compiled class hashes.
+
+Starknet Foundry version 0.53.0 and later includes support for Blake hash, ensuring compatibility with the new Starknet version.
+
+## Common Issue: Mismatch Compiled Class Hash
+
+If you encounter a `Mismatch compiled class hash` error, it likely means you're using an older version of Starknet Foundry that doesn't support Blake hash.
+
+**Solution**: Upgrade to Starknet Foundry version 0.53.0 or later:
+
+```shell
+asdf install starknet-foundry latest
+```
+
+```shell
+asdf set --home starknet-foundry latest
+```
+
+This will update your installation to the latest version with Blake hash support.
+
+> 📝 **Note**
+>
+> For more detailed installation instructions, see the [Installation](../getting-started/installation.md) guide.

docs/theme/header.hbs

@@ -1,27 +1,18 @@
-<div class="migration-banner">
-    <p>
-        <strong>Important:</strong> If you're upgrading snforge to version 0.48.0 or later, please read the
-        <a href="{{ path_to_root }}getting-started/0-48-0-migration-guide.html">0.48.0 Migration Guide</a>.
-    </p>
+<div class="blake-banner">
+  <p>
+    <strong>Important:</strong>
+    If you're encountering any problem declaring contracts, please read the
+    <a href="{{path_to_root}}getting-started/blake-hash-support.html">
+      Blake Hash Support</a>
+    information.
+  </p>
 </div>
 
 <style>
-    .migration-banner {
-        position: relative;
-        z-index: 100;
-        background-color: #f8d7da;
-        color: #721c24;
-        border: 0.0625rem solid #f5c6cb;
-        border-radius: 0;
-        text-align: center;
-        padding: 5rem 1rem 0 1rem;
-        width: calc(100% + 8px + var(--page-padding));
-        margin-left: calc((8px + var(--page-padding)) * -1);
-    }
-
-    .migration-banner a {
-        color: #721c24;
-        font-weight: bold;
-        text-decoration: underline;
-    }
+  .blake-banner { position: relative; z-index: 100; background-color: #f8d7da;
+  color: #721c24; border: 0.0625rem solid #f5c6cb; border-radius: 0; text-align:
+  center; padding: 5rem 1rem 0 1rem; width: calc(100% + 8px +
+  var(--page-padding)); margin-left: calc((8px + var(--page-padding)) * -1); }
+  .blake-banner a { color: #721c24; font-weight: bold; text-decoration:
+  underline; }
 </style>