feat: initial release of @mobiletic/anonymizer

Framework-agnostic PII anonymization extracted from Mobiletic's chatbot.
Pluggable LLM detection + configurable regex fallback, deterministic
coreference, and streaming-safe de-anonymization.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

tsup.config.ts

@@ -0,0 +1,11 @@
+import { defineConfig } from 'tsup';
+
+export default defineConfig({
+  entry: ['src/index.ts'],
+  format: ['esm', 'cjs'],
+  dts: true,
+  clean: true,
+  sourcemap: true,
+  target: 'es2021',
+  outExtension: ({ format }) => ({ js: format === 'cjs' ? '.cjs' : '.js' }),
+});