feat: prepare @nbtca/prompt 1.5.0

[m1ngsama]

What

• Improve TUI behavior on narrow and short terminals, including Shift+Tab, PgUp/PgDn, long input visibility, Unicode grapheme handling, and OSC-8-safe wrapping.
• Integrate @nbtca/docs 0.3.0 metadata and search APIs and @nbtca/nbtcal 0.4.0 timetable scheduling APIs.
• Fix terminal control-sequence handling, DST calendar arithmetic, schedule path containment, session/view cleanup, settings refresh, pager behavior, and docs cache invalidation.
• Remove unreachable classic UI paths, the physical bin wrapper, unused assets, and duplicated schedule logic while preserving both CLI command aliases.
• Add strict ESLint, Prettier, test-inclusive type checking, package consumer smoke tests, audit gates, and OIDC tag publishing.

Why

This keeps Prompt focused as a CLI/TUI consumer while moving reusable document and timetable behavior into the two library packages. The release improves terminal reliability and maintainability without introducing a major-version API redesign.

Impact

• Package version: 1.5.0.
• Requires published @nbtca/docs 0.3.0 and @nbtca/nbtcal 0.4.0.
• nbtca and nbtca-welcome continue to invoke the same CLI entry point.
• Importing the package root remains supported for compatibility, though Prompt remains CLI-first.

Checks

• Fresh npm ci from the public registry.
• npm run check: Prettier, ESLint, strict TypeScript, 50 files / 658 tests, CLI contracts, tarball consumer smoke, and npm audit with 0 vulnerabilities.
• Registry integrity and SLSA provenance verified for both internal dependencies.