Fix terminal package type declarations

[andrei-hasna]

Summary

• emit TypeScript declarations and wire package metadata for @hasna/terminal and @hasna/terminal/storage
• add root/storage source entrypoints and prepack build guard so packed output includes declared d.ts files from a clean checkout
• avoid leaking bun:sqlite through public declarations and keep PostgreSQL SSL verification enabled by default

Validation

• bun run build
• npm pack --dry-run --json | rg 'dist/(index|storage)\.d\.ts'
• npm pack --dry-run --json --ignore-scripts | rg 'dist/(index|storage)\.d\.ts'
• packed tarball TypeScript import checks for @hasna/terminal and @hasna/terminal/storage with NodeNext, Node16, Bundler, and legacy Node resolution
• rg 'bun:sqlite|from "bun:' dist --glob '*.d.ts' returned no matches
• bun test (211 pass, 0 fail)
• adversarial reviewer findings reconciled before PR