chore: trim lib exports (#16)

* chore: trim package exports

* docs: split module into public/internal API

* chore: bump v1.2.2

Author: masonlet

README.md

@@ -7,24 +7,31 @@ Core library for gh-top-languages — chart generation, SVG output, and paramete
 ![Node](https://img.shields.io/badge/Node.js-22+-green)
 [![License: MIT](https://img.shields.io/badge/License-MIT-green)](./LICENSE)
 
-## Modules
+## Module APIs
+### Public
+Importable via `@gh-top-languages/lib/<path>`:
 | Path                    | Description                               |
 | ---                     | ---                                       |
+| `charts/types.js`       | Shared types                              |
+| `charts/generate.js`    | Chart geometry dispatch, segment and legend generation |
+| `render/svg.js`         | SVG document rendering                    |
+| `render/error.js`       | Error SVG rendering                       |
+| `utils/params.js`       | Query parameter parsing and normalization |
+| `utils/sanitize.js`     | HTML entity sanitization                  |
 | `constants/config.js`   | Default configuration values              |
+| `constants/themes.js`   | Built-in colour themes                    |
+
+### Internal
+Shipped in the package but not part of the public API:
+| Path                    | Description                               |
+| ---                     | ---                                       |
 | `constants/geometry.js` | Geometry constants                        |
 | `constants/styles.js`   | Style and layout constants                |
-| `constants/themes.js`   | Built-in colour themes                    |
 | `constants/types.js`    | Valid chart type values                   |
-| `charts/types.js`       | Shared types                              |
-| `utils/params.js`       | Query parameter parsing and normalization |
-| `utils/sanitize.js`     | HTML entity sanitization                  |
 | `charts/geometry.js`    | SVG arc path math and segment helpers     |
 | `charts/helpers.js`     | Percent display and colour-resolution helpers |
 | `charts/legend.js`      | Legend element generation                 |
 | `charts/layout.js`      | Shared layout calculations                |
-| `charts/generate.js`    | Chart geometry dispatch, segment and legend generation |
-| `render/svg.js`         | SVG document rendering                    |
-| `render/error.js`       | Error SVG rendering                       |
 
 ## Query parameters
 All parsing lives in `parseQueryParams`(utils/params.js), invalid params fall back to defaults.

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@gh-top-languages/lib",
-  "version": "1.2.1",
+  "version": "1.2.2",
   "description": "Library for gh-top-languages — chart generation, SVG output, and parameter parsing",
   "keywords": [
     "svg",
@@ -22,19 +22,13 @@
   "engines": { "node": ">=22" },
   "exports": {
     "./charts/types.js":       { "types": "./dist/charts/types.d.ts",       "import": "./dist/charts/types.js"       },
-    "./charts/geometry.js":    { "types": "./dist/charts/geometry.d.ts",    "import": "./dist/charts/geometry.js"    },
-    "./charts/legend.js":      { "types": "./dist/charts/legend.d.ts",      "import": "./dist/charts/legend.js"      },
-    "./charts/layout.js":      { "types": "./dist/charts/layout.d.ts",      "import": "./dist/charts/layout.js"      },
     "./charts/generate.js":    { "types": "./dist/charts/generate.d.ts",    "import": "./dist/charts/generate.js"    },
     "./render/svg.js":         { "types": "./dist/render/svg.d.ts",         "import": "./dist/render/svg.js"         },
     "./render/error.js":       { "types": "./dist/render/error.d.ts",       "import": "./dist/render/error.js"       },
     "./utils/params.js":       { "types": "./dist/utils/params.d.ts",       "import": "./dist/utils/params.js"       },
     "./utils/sanitize.js":     { "types": "./dist/utils/sanitize.d.ts",     "import": "./dist/utils/sanitize.js"     },
     "./constants/config.js":   { "types": "./dist/constants/config.d.ts",   "import": "./dist/constants/config.js"   },
-    "./constants/geometry.js": { "types": "./dist/constants/geometry.d.ts", "import": "./dist/constants/geometry.js" },
-    "./constants/styles.js":   { "types": "./dist/constants/styles.d.ts",   "import": "./dist/constants/styles.js"   },
-    "./constants/themes.js":   { "types": "./dist/constants/themes.d.ts",   "import": "./dist/constants/themes.js"   },
-    "./constants/types.js":    { "types": "./dist/constants/types.d.ts",    "import": "./dist/constants/types.js"    }
+    "./constants/themes.js":   { "types": "./dist/constants/themes.d.ts",   "import": "./dist/constants/themes.js"   }
   },
   "files": [
     "dist",