Track: Add Arkade Script / introspector client support (ts-sdk #319 parity)

[arkanaai]

Summary

ts-sdk PR #319 (louisinger) adds full client-side support for ArkLabsHQ/introspector and ArkadeScript. Smart contract spending conditions evaluated by the Arkade introspector, committed to VTXO tapscript leaves.

Reference Implementation

• ts-sdk PR #319: Arkade script support ts-sdk#319
• Introspector repo: https://github.com/ArkLabsHQ/introspector

What needs to happen in dotnet-sdk

1. ArkadeScript tapscript leaf construction
2. Introspector-compatible output constraint encoding
3. Signing/spending path for ArkadeScript-gated VTXOs
4. .NET API surface for contract creation/spending

Owner

@Kukks — tagging for awareness. Low urgency until ts-sdk #319 merges.

Labels

sdk-parity