Initial commit: Pezkuwi SDK UI

Comprehensive web interface for interacting with Pezkuwi blockchain.

Features:
- Blockchain explorer
- Wallet management
- Staking interface
- Governance participation
- Developer tools

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.yarnrc.yml

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+compressionLevel: mixed
+
+enableGlobalCache: false
+
+enableImmutableInstalls: false
+
+enableProgressBars: false
+
+logFilters:
+  - code: YN0013
+    level: discard
+
+nodeLinker: node-modules
+
+yarnPath: .yarn/releases/yarn-4.6.0.cjs