Verify binding examples and remote-store adapters

[forhappy]

Summary

• run every language cookbook launcher in required CI and add an all-language live store integration workflow
• make the store harness self-contained and portable across macOS and Linux
• align Node and Kotlin/Java DynamoDB named-root storage with the canonical Rust companion-table schema, including Rust interoperability coverage
• preserve Node StoreError identity across duplicate package copies
• repair stale Rust async/merge assertions, generated-directory scanning, and the Go cookbook launcher
• pin redb 4.1 so the adapter continues honoring its declared Rust 1.89 minimum

Verification

• ./scripts/test-all-language-stores.sh passed for Rust, Go, Node, Kotlin, Java, Python, Ruby, Swift, IndexedDB, OPFS, and PGlite
• all 14 cookbook scenarios passed in Python, Go, Node, Ruby, Kotlin, Java, and Swift; all browser scenarios passed through WASM
• Node packed-package install smoke and WASM dry-run package inspection passed
• redb passed 19 integration tests and 3 doc tests on Rust 1.89
• python3 scripts/check-binding-release.py, cargo fmt --all -- --check, workflow YAML parsing, shell syntax checks, and git diff --check passed
• Cosmos DB SDK contract tests passed; the live cloud test remains credential-gated

The package publication work landed in #109. Registry checks on 2026-08-23 still show prollydb and prollydb-wasm unclaimed on npm and prollydb unclaimed on PyPI.