Rewrite transaction docs for tx.coin/tx.balance APIs

Rewrite all transaction documentation to cover address balances,
tx.coin(), tx.balance(), and the new intent resolution system.

- basics.mdx: Use tx.coin() as primary API, add codegen, thunks, serialization
- coins-and-balances.mdx: Full rewrite covering dual coin/balance system,
  resolution paths, tx.withdrawal(), manual operations, getBalance/listCoins
- signing-and-execution.mdx: Full rewrite covering simulation, keypair signing,
  dApp Kit, sponsored transactions (coin-based and address-balance flows),
  gas configuration, waitForTransaction
- reference.mdx: New comprehensive command and input reference
- offline.mdx: Rewrite for address balance workflows, party objects, expiration
- Update other doc pages for consistency (dapp-kit, bcs, kiosk, etc.)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: hayes-mysten

packages/bcs/README.md

@@ -9,7 +9,7 @@ available in both Browser and NodeJS environments in a type-safe way.`
 To install, add the [`@mysten/bcs`](https://www.npmjs.com/package/@mysten/bcs) package to your
 project:
 
-```sh npm2yarn
+```npm
 npm i @mysten/bcs
 ```
 

packages/dapp-kit/README.md

@@ -23,7 +23,7 @@ See https://sdk.mystenlabs.com/sui for full documentation
 
 To use the Sui dApp Kit in your project, run the following command in your project root:
 
-```sh npm2yarn
+```npm
 npm i --save @mysten/dapp-kit @mysten/sui @tanstack/react-query
 ```
 

packages/docs/content/bcs/index.mdx

@@ -12,7 +12,7 @@ available in both Browser and NodeJS environments in a type-safe way.`
 To install, add the [`@mysten/bcs`](https://www.npmjs.com/package/@mysten/bcs) package to your
 project:
 
-```sh npm2yarn
+```npm
 npm i @mysten/bcs
 ```
 

packages/docs/content/codegen/index.mdx

@@ -24,7 +24,7 @@ This package is currently in development and may have breaking changes.
 
 Install the codegen package as a dev dependency:
 
-```sh npm2yarn
+```npm
 npm install -D @mysten/codegen
 ```
 
@@ -456,5 +456,5 @@ const dAppKit = createDAppKit({
   already configured
 - [Sui Move documentation](https://docs.sui.io/concepts/sui-move-concepts)
 - [BCS documentation](/bcs)
-- [Transaction building](/sui/transaction-building/basics)
+- [Transaction building](/sui/transactions/basics)
 - [dApp Kit](/dapp-kit)

packages/docs/content/dapp-kit/getting-started/create-dapp.mdx

@@ -8,7 +8,7 @@ built in.
 
 ## Quick Start
 
-```sh npm2yarn
+```npm
 npm create @mysten/dapp
 ```
 

packages/docs/content/dapp-kit/getting-started/next-js.mdx

@@ -8,7 +8,7 @@ rendering (SSR).
 
 ## Installation
 
-```sh npm2yarn
+```npm
 npm i @mysten/dapp-kit-react @mysten/sui
 ```
 

packages/docs/content/dapp-kit/getting-started/react.mdx

@@ -9,7 +9,7 @@ This guide walks you through integrating dApp Kit into a React application.
 
 The fastest way to get started is using our CLI tool:
 
-```sh npm2yarn
+```npm
 npm create @mysten/dapp
 ```
 
@@ -31,7 +31,7 @@ See the [create-dapp guide](/dapp-kit/getting-started/create-dapp) for more deta
 
 ## Manual Installation
 
-```sh npm2yarn
+```npm
 npm i @mysten/dapp-kit-react @mysten/sui
 ```
 

packages/docs/content/dapp-kit/getting-started/vue.mdx

@@ -8,7 +8,7 @@ direct store access.
 
 ## Installation
 
-```sh npm2yarn
+```npm
 npm i @mysten/dapp-kit-core @mysten/sui @nanostores/vue
 ```
 

packages/docs/content/dapp-kit/index.mdx

@@ -37,13 +37,13 @@ Choose the installation method based on your framework:
 
 ### For React Applications
 
-```sh npm2yarn
+```npm
 npm i @mysten/dapp-kit-react @mysten/sui
 ```
 
 ### Vanilla JavaScript and other frameworks
 
-```sh npm2yarn
+```npm
 npm i @mysten/dapp-kit-core @mysten/sui
 ```
 

packages/docs/content/dapp-kit/legacy/index.mdx

@@ -27,7 +27,7 @@ Some of the core features of the dApp Kit include:
 
 To use the Sui dApp Kit in your project, run the following command in your project root:
 
-```sh npm2yarn
+```npm
 npm i --save @mysten/dapp-kit @mysten/sui @tanstack/react-query
 ```