0.2.7 — pass Obsidian community-plugin lint

What's in 0.2.7

Address every Error-level finding from the Obsidian community-plugin review of 0.2.6 so the resubmission passes automated checks. Warnings and Recommendations remain for a follow-up release.

• Drop diagnostic console.* calls in AiProviderService + StoryGenerator (rule no-console).
• Replace (app as any).setting casts with a typed module augmentation (src/types/obsidian-internals.d.ts).
• Rewrite onunload as a synchronous void method with an async IIFE; drop detachLeavesOfType so user leaf placement survives plugin disable/enable (rule obsidianmd/detach-leaves-in-onunload).
• Swap 16 HTML headings in the settings tab for new Setting(...).setHeading() (rule obsidianmd/use-setting-heading).
• Move 7 inline element styles in the Stats word-detail overlay + smart-preview text to dedicated CSS classes (rule obsidianmd/no-static-styles-assignment).
• Add justifications to the two remaining no-constant-condition eslint-disable comments.
• Bump minAppVersion 1.5.0 → 1.7.2 to cover the typed app.loadLocalStorage / app.saveLocalStorage / app.setting calls.

BRAT install

Add the repo as a beta plugin and BRAT will pick this prerelease up. Stable promotion happens after manual smoke testing.