chore: MIT license + publishing polish (release 0.2.0)

[vreshch]

Prepares the plugin for public release. Bundles the license decision, the review's low/nit fixes, and repo hygiene. Ships 0.2.0 (with the robustness PR #65).

License

• MIT (LICENSE, package.json license field, README). The plugin is open source; the SaaS backend stays a separate hosted product. Unblocks the Obsidian community store.

Polish (review lows/nits)

• Signed-out CTA "Start sync with agentage" → "Sign in to Agentage" (matches the menu + post-sign-in notice).
• MCP section (Expose remote MCP + "how to connect") now gated behind signed-in, like the Memory section.
• Status-bar shows a "Sign in" label in the signed-out state (not just a tooltip).
• "Sync now" with no memory: message reworded so it reads with the picker that opens (no more "nothing happened").
• hydrateAuth ignores an auth.json minted for a different host (no dev-token replay against prod).
• package.json description: dropped the em dash + now matches the manifest.

Repo hygiene / public-readiness

• CHANGELOG.md (Keep a Changelog) + SECURITY.md (coordinated disclosure → support@agentage.io).
• manifest.helpUrl → agentage.io/connect; README badges (release/MIT/Obsidian) + an FAQ + dashboard host disclosure.
• release.yml now runs check:hosts + check:docs on the publish path (not just on PRs), so a tag-push can't ship store-non-compliant.
• Scrubbed em dashes from the public docs (README/CHANGELOG/SECURITY).

npm run verify green (68 tests, build, host/docs/bundle).

Not done (needs a running Obsidian): UI screenshots/GIF. Deferred with rationale: remoteHasRef() catch-all (changing it risks regressing empty-remote seeding).

[github-actions]

🎉 PR Validation ✅ PASSED

Commit: 1c579496a507b0e19543bbb7863184d418e0cd1e
Branch: feature/public-prep

Checks:

• ✅ Dependencies installed
• ✅ Type check passed
• ✅ Linting passed
• ✅ Format check passed
• ✅ Tests + coverage passed
• ✅ Build successful
• ✅ Store-compliance checks passed
• ✅ Bundle is mobile-safe

Ready to merge! ✨

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