chore: add licensing info (#924)

* CC BY-SA 4.0 for text
* MIT for code

Author: novusnota

.prettierignore

@@ -1,3 +1,5 @@
 *.mdx
 /ecosystem/api/toncenter/v2/
 /ecosystem/api/toncenter/v3/
+/ecosystem/api/toncenter/smc-index/
+/LICENSE*

.remarkignore

@@ -8,8 +8,9 @@ node_modules/
 /foundations/whitepapers/ton.mdx
 /foundations/whitepapers/tvm.mdx
 
-# Ignore root index.mdx file
+# Ignore some root files
 /index.mdx
+/LICENSE*
 
 # Ignore generated files and directories
 /tvm/instructions.mdx

LICENSE-code

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025 TON Studio and others
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

LICENSE-docs

@@ -20,7 +20,7 @@ View your local preview at `http://localhost:3000`.
 
 ### Spell checks
 
-> [!NOTE]
+> \[!NOTE]
 > Automatic spelling checks are performed for changed files in each Pull Request.
 
 To check spelling of **all** files, run:
@@ -49,7 +49,7 @@ See more: [CSpell docs on custom dictionaries](https://cspell.org/docs/dictionar
 
 ### Format checks
 
-> [!NOTE]
+> \[!NOTE]
 > Automatic formatting checks are performed for changed files in each Pull Request.
 
 To check formatting of **all** files, run:
@@ -89,3 +89,10 @@ See the [`snippets/` directory](./snippets) and the corresponding docs in [`cont
 
 - [Mintlify documentation](https://mintlify.com/docs)
 - [Mintlify community](https://mintlify.com/community)
+
+## License
+
+This project is dual-licensed:
+
+- All documentation and non-code text are licensed under [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)
+- All code snippets are licensed under [MIT](https://opensource.org/license/mit)

README.md

@@ -338,7 +338,7 @@
                   "standard/tokens/nft/nft-2.0",
                   "standard/tokens/nft/api"
                 ]
-              },      
+              },
               "standard/tokens/airdrop"
             ]
           },