Feature/semantic similarity (#36)

* fix: mixed up migrations

* feat: semantic similarity first take

* feat: semantic similarity first round of fixes

* feat: more work on making semantic similarity work properly

* feat: getPostBySlug for the AI

* feat: show similarity in post-link-insert-modal

* chore: remove done doc

---------

Co-authored-by: hugo <hugoms@me.com>

package.json

@@ -78,6 +78,7 @@
     "@dagrejs/dagre": "^2.0.4",
     "@floating-ui/dom": "^1.7.5",
     "@highlightjs/cdn-assets": "^11.11.1",
+    "@huggingface/transformers": "^3.8.1",
     "@libsql/client": "^0.17.0",
     "@milkdown/kit": "^7.18.0",
     "@milkdown/plugin-block": "^7.18.0",
@@ -119,6 +120,7 @@
     "snowball-stemmers": "^0.6.0",
     "transliteration": "^2.6.1",
     "turndown": "^7.2.2",
+    "usearch": "^2.21.4",
     "uuid": "^13.0.0",
     "vanilla-calendar-pro": "^3.1.0",
     "zod": "^4.3.6",