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-# dayjs-hijri-plus — PRI (Per-Repo Instructions)
-
-**PPI:** `~/Sites/acamarata/.claude/CLAUDE.md`
-
-## What This Is
-
-A Day.js plugin that adds Hijri calendar support. Converts Gregorian dates to and from
-Hijri, provides Hijri-aware formatting, and delegates all calendar logic to hijri-core.
-Supports Umm al-Qura (UAQ) and FCNA/ISNA calendars out of the box. Custom calendar
-engines can be registered at runtime.
-
-**npm:** `dayjs-hijri-plus@1.0.0`
-**Language:** TypeScript
-**License:** MIT
-
-## Key Technical Details
-
-- Peer dependencies: `dayjs@^1.0.0`, `hijri-core@^1.0.0`
-- Plugin pattern: call `dayjs.extend(hijriPlugin)` once at startup
-- Instance methods added: `toHijri()`, `formatHijri()`, `hijriYear()`, `hijriMonth()`, `hijriDay()`
-- Static factory added: `dayjs.fromHijri(hy, hm, hd, options?)`
-- Hijri format tokens: `iYYYY`, `iMM`, `iDD`, `iD`, `iMMMM` — non-Hijri tokens pass through to dayjs
-- Options argument selects calendar: `{ calendar: 'uaq' }` (default) or `{ calendar: 'fcna' }`
-- Dual CJS/ESM build via tsup
-- Zero runtime dependencies (peer deps are provided by the consumer)
-
-## Architecture
-
-`src/index.ts` is the plugin entry point — exports the default plugin function and any
-types. `src/types.ts` holds shared type definitions. Built to `dist/` (gitignored) with
-`.cjs` and `.mjs` outputs plus dual type declarations.
-
-## Commands
-
-- `pnpm install` — install dev deps
-- `pnpm build` — tsup build
-- `pnpm test` — run test.mjs + test-cjs.cjs
-- `pnpm run typecheck` — tsc --noEmit
-
-## Important Notes
-
-- This is a plugin for Day.js — call `dayjs.extend(hijriPlugin)` before using any methods
-- hijri-core provides the actual calendar engine — this package is a thin adapter
-- Changes to hijri-core's API may require updates here
-- dayjs is a peer dep — the consumer's installed dayjs instance is used (no bundled copy)