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>

drizzle/0011_embedding_tables.sql

@@ -0,0 +1,15 @@
+CREATE TABLE `dismissed_duplicate_pairs` (
+	`id` text PRIMARY KEY NOT NULL,
+	`project_id` text NOT NULL,
+	`post_id_a` text NOT NULL,
+	`post_id_b` text NOT NULL,
+	`dismissed_at` integer NOT NULL
+);
+--> statement-breakpoint
+CREATE UNIQUE INDEX `dismissed_pairs_idx` ON `dismissed_duplicate_pairs` (`project_id`,`post_id_a`,`post_id_b`);--> statement-breakpoint
+CREATE TABLE `embedding_keys` (
+	`label` integer PRIMARY KEY NOT NULL,
+	`post_id` text NOT NULL,
+	`project_id` text NOT NULL,
+	`content_hash` text NOT NULL
+);