PR 5/N (2.0 stack): align Vue ecosystem deps with SDK 17, add extension compatibility tables

[elisiondan]

Summary

The Directus SDK 17 (landed in PR 4) already pulls in modern Vue, Pinia, and @vueuse/core transitively. The module's declared devDeps were just stale against what's actually installed and bundled. This PR aligns the declarations so reading package.json matches reality.

• Vue: ^3.4.27 → ^3.5.0 (installed 3.5.24).
• Pinia: ^2.1.4 → ^2.3.1 (installed 2.3.1).
• @vueuse/core: ^10.2.1 → ^14.0.0 (installed 14.0.0).

Why Pinia stays on 2.x

Pinia is externalized at extension build time — the runtime instance is provided by Directus' admin app. Directus 11 ships Pinia 2.3.1 via the SDK 17 dep tree. Declaring Pinia 3 in the extension would build fine but introduces a build-time/runtime type drift for no real-world benefit; the SFC code paths used in this module are compatible with both majors. Cleanest answer: match the runtime version that Directus actually provides.

Extension READMEs — compatibility tables

Both extensions/module/README.md and extensions/sync-hook/README.md get a small 🧭 Compatibility section above the install instructions:

Extension version	Directus	Notes
2.x	^11.0.0	Current.
1.x	^10.10.0	Frozen. Pin with npm install <package>@^1 if you can't upgrade Directus yet.

This is the user-visible signal that 2.0 drops Directus 10 support and that stragglers have a pin to fall back on (the same line we'll repeat in MIGRATION.md in PR 6).

Verified

• npm run build — minified production bundles for both extensions.
• npm run test — 49/49.
• npm run lint — 0 errors (10 pre-existing warnings).
• npm run format — clean.

Test plan

• CI passes.
• Run npm run dev and confirm the admin module still renders identically — no Vue 3.4→3.5 regressions in the SFCs, no @vueuse/core API surface regressions (the only composables used are stock useDebounceFn, useStorage etc., all stable across 10→14).
• Bundle size hasn't ballooned (module went 386 KB → still ~386 KB after this PR).

Out of scope

• MIGRATION.md + final 2.0.0 version bump — PR 6.
• Aggregate check script + husky — PR 7.
• Fixing the deferred Pinia store typecheck errors from SDK 17 — Stage 2.

🤖 Generated with Claude Code