Add Bitcoin wallet development overview documentation page

[Copilot]

GitHub Copilot generated this pull request.

Adds a new docs entry that turns the provided Bitcoin wallet developer text into a structured, docs-style resource page. The content preserves the original meaning while improving readability, sectioning, and scanability for docs.github.com.

• New page: role and architecture overview

  • Added content/get-started/learning-to-code/bitcoin-wallet-development-overview.md.
  • Covers: overview, core development components, key management, network interaction, transaction construction, security layer, and essential tools/stack.

• Required technical scope captured

  • Key standards: BIP32, BIP39, BIP44.
  • Network models: full nodes, SPV/Electrum, blockchain APIs.
  • Transaction flow: UTXO selection, fee estimation, signing.
  • Security controls: device encryption, multisig, hardware wallet integration.
  • Tooling/frameworks/infrastructure: bitcoinjs-lib, bitcoinlib, libbitcoin, React, React Native, Flutter, Swift, Kotlin, Bitcoin Core.

• Navigation integration

  • Added the new page to content/get-started/learning-to-code/index.md (children) so it appears in local section navigation.

# content/get-started/learning-to-code/bitcoin-wallet-development-overview.md
title: Bitcoin wallet development overview
shortTitle: Bitcoin wallet development

## Key management (BIP32, BIP39, BIP44)
## Network interaction (full nodes, SPV/Electrum, blockchain APIs)
## Transaction construction (UTXO selection, fee estimation, signing)
## Security layer (device encryption, multisig, hardware wallets)
## Essential tools & tech stack

[Copilot]

Pull request overview

Adds a new “Bitcoin wallet development overview” article to the Get started → Learning to code section, and links it from the section index so it appears in local navigation.

Changes:

• Added a new conceptual overview page: bitcoin-wallet-development-overview.md.
• Updated the learning-to-code index to include the new page in children.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
content/get-started/learning-to-code/index.md	Adds the new page to the section’s children navigation list.
content/get-started/learning-to-code/bitcoin-wallet-development-overview.md	Introduces a new overview article covering key wallet development concepts (key management, networking, transactions, security, tooling).

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