Saved playback position resets to 0 after a restart and an episode switch #353

Problem. After a restart, switching to another episode before the player has mounted overwrites the restored episode's saved position with 0. currentEpisode.set reads the unmounted player's zeroed currentTime and duration (src/store/index.ts:55-63). A jsdom probe turned a saved record of 600 s into {"time":0,"duration":0,"finished":false}. The test at src/store/index.test.ts:729-740 asserts only finished, so it does not catch this.

Repro (hypothesis). Play episode A to 10:00 and pause. Restart Obsidian. Click episode B in Latest Episodes, then open A again: it starts at 0:00.

Acceptance. Reproduced in real Obsidian first. After the fix, A resumes at 10:00 in the same flow, and an end-to-end test covers it.

Found by the PodNotes codebase audit. Not yet reproduced in Obsidian.