fix(player,studio): resolve root timeline from DOM instead of last key (#247)

Bundled previews register a master composition alongside its sub-compositions
in `window.__timelines`, e.g. { main, intro, scene2, scene5 }. Both the
player's probe and studio's getAdapter() were using `keys[keys.length - 1]`
to pick the adapter, which returned whichever timeline was registered last.

That made the player report the final sub-composition's duration as the
video length (e.g. 3.2s instead of the master's 14s) and play/pause/seek
targeted that sub-composition instead of the full composition.

Look up the outermost `[data-composition-id]` element in the iframe DOM
and use its id to select the right timeline. Falls back to last-key when
no element is present (standalone sub-composition previews) so drill-down
views keep working.

Also restores `main`/`import` entry points on @hyperframes/player to
point at compiled dist output (the src/ paths broke workspace consumers
that only receive the published tarball).

packages/player/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/player",
-  "version": "0.2.5",
+  "version": "0.2.6",
   "description": "Embeddable web component for HyperFrames compositions",
   "repository": {
     "type": "git",
@@ -11,13 +11,13 @@
     "dist"
   ],
   "type": "module",
-  "main": "./src/hyperframes-player.ts",
-  "types": "./src/hyperframes-player.ts",
+  "main": "./dist/hyperframes-player.js",
+  "types": "./dist/hyperframes-player.d.ts",
   "exports": {
     ".": {
-      "types": "./src/hyperframes-player.ts",
+      "types": "./dist/hyperframes-player.d.ts",
       "script": "./dist/hyperframes-player.global.js",
-      "import": "./src/hyperframes-player.ts",
+      "import": "./dist/hyperframes-player.js",
       "require": "./dist/hyperframes-player.cjs"
     }
   },