Add lightweight types entry point for SSR/web workers

Adds 'chat-to-map/types' entry point that exports only:
- Type definitions
- Lightweight utility functions (formatLocation, isMappable, etc.)

This allows web workers to import types without bundling heavy
dependencies like chrono-node, AI SDKs, or export libraries.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: ndbroadbent

package.json

@@ -38,6 +38,11 @@
       "import": "./dist/index.js",
       "default": "./dist/index.js"
     },
+    "./types": {
+      "types": "./dist/types-entry.d.ts",
+      "import": "./dist/types-entry.js",
+      "default": "./dist/types-entry.js"
+    },
     "./costs": {
       "types": "./dist/costs/index.d.ts",
       "import": "./dist/costs/index.js",
@@ -52,7 +57,7 @@
   "scripts": {
     "cli": "bun run src/cli.ts",
     "dev": "bun run --watch src/cli.ts",
-    "build": "bun build src/index.ts --outdir dist --target node && bun build src/costs/index.ts --outdir dist/costs --target node && bun build src/cli.ts --outdir dist --target node && tsc -p tsconfig.types.json",
+    "build": "bun build src/index.ts --outdir dist --target node && bun build src/types-entry.ts --outdir dist --target node && bun build src/costs/index.ts --outdir dist/costs --target node && bun build src/cli.ts --outdir dist --target node && tsc -p tsconfig.types.json",
     "build:types": "tsc -p tsconfig.types.json",
     "build:types:watch": "tsc -p tsconfig.types.json --watch",
     "build:binary": "bun build src/cli.ts --compile --outfile chat-to-map",

src/types-entry.ts

@@ -0,0 +1,37 @@
+/**
+ * Lightweight Types Entry Point
+ *
+ * This entry point exports ONLY types and lightweight utilities.
+ * It does NOT export heavy processing functions like classifyMessages,
+ * parseChatWithStats, RealChatProcessor, or export functions (PDF, Excel).
+ *
+ * Use this entry point in web workers / SSR to avoid bundling heavy deps.
+ * Use the main entry point in workflows where heavy processing is needed.
+ *
+ * @example
+ * // In SSR/web worker code:
+ * import { type GeocodedActivity, formatLocation, isMappable } from 'chat-to-map/types'
+ *
+ * // In workflow code:
+ * import { classifyMessages, RealChatProcessor } from 'chat-to-map'
+ */
+
+// Valid categories constant
+export { VALID_CATEGORIES } from './categories'
+
+// Processor types (interface only, no implementation)
+export type {
+  ChatProcessor,
+  ProcessingStageResults,
+  ProcessorCandidateResult,
+  ProcessorClassifyResult,
+  ProcessorConfig,
+  ProcessorGeocodeResult,
+  ProcessorParseResult
+} from './processor'
+
+// All types from types/index.ts - re-export everything
+export * from './types'
+
+// Lightweight utilities from types/classifier.ts
+export { CATEGORY_EMOJI, formatLocation, isMappable } from './types/classifier'