New /idose get buttons to view next and previous entries

[silent-decibel]

Dose history is now browsed one entry at a time (most recent first) using Back/Next buttons instead of cramming records into a single embed. Back is disabled on the newest entry, Next on the oldest, the buttons only respond to the user who ran the command, and they grey out after the timeout. Replaces the old 24-field chunking logic.

Other changes

• seed.ts — use the @prisma/adapter-pg Pool adapter when creating PrismaClient (required by Prisma 7).
• prisma.config.{ts,mjs} — run the seed via ts-node -r tsconfig-paths/register --transpile-only instead of tsx
  so @-aliased imports resolve.
• entrypoint.sh — copy the generated Prisma client into build/ (tsc doesn't emit it).
• .vscode/settings.json — use the ESLint formatter for TypeScript files so format-on-save stops conflicting
  with lint rules.
• .gitignore — ignore CLAUDE.md and .prettierrc.