feat(dexdex): forward tauri dev console logs to terminal

[kdy1]

Summary

• forward DexDex WebView console.* logs to terminal output in Tauri development runtime
• keep production behavior unchanged by enabling the bridge only in development mode with Tauri runtime checks
• add Tauri log plugin wiring on both Rust host and web client side
• sync DexDex docs contracts to reflect the new development logging behavior

Changes

• add @tauri-apps/plugin-log dependency and lockfile updates
• register tauri_plugin_log::Builder::new().build() in Tauri host runtime
• add log:default capability permission for DexDex desktop window
• add initDevConsoleTerminalBridge() in app bootstrap
• add dev-console-terminal-bridge.ts and tests for level mapping, no-op without Tauri runtime, and idempotent install
• update DexDex app and project docs:
  • docs/apps-dexdex-desktop-app-foundation.md
  • docs/project-dexdex.md

Validation

• cd apps/dexdex && pnpm test
• cargo test (repository root)
• cd apps/dexdex/src-tauri && cargo test

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