feat(ee): turbopuffer ai vector search driver (#2402)

* feat(ai): add AI_VECTOR_DRIVER and turbopuffer configuration

* feat(ai): carry workspace and target space ids on vector lifecycle events

* feat(ai): add vector driver interface and turbopuffer request helpers

* feat(ai): add pgvector driver behind the vector driver interface

* refactor(ai): route vector reads and writes through the vector driver

* feat(ai): add turbopuffer vector driver

* feat(ai): rebuild turbopuffer namespaces when the embedding model changes

* feat(ai): warm the vector namespace cache on session start

* fix(ai): harden turbopuffer misconfiguration and reset failure paths

* fix(ai): collapse blank-line runs in extracted page text

* fix(ai): skip full re-embed when ai search is re-enabled within the delete grace window

* sync

* fix(ai): store real embedding dimensions instead of serialized vector length

* fix(ai): filter search hits by the page's current space at query time

* fix(ai): retry the page moved-to-space vector patch job

* sync

* feat(ai): pre-warm the vector namespace

* fix(ai): pass AI_VECTOR_DRIVER through the client build config

apps/client/vite.config.ts

@@ -16,6 +16,7 @@ export default defineConfig(({ mode }) => {
     BILLING_TRIAL_DAYS,
     POSTHOG_HOST,
     POSTHOG_KEY,
+    AI_VECTOR_DRIVER,
   } = loadEnv(mode, envPath, "");
 
   return {
@@ -31,6 +32,7 @@ export default defineConfig(({ mode }) => {
         BILLING_TRIAL_DAYS,
         POSTHOG_HOST,
         POSTHOG_KEY,
+        AI_VECTOR_DRIVER,
       },
       APP_VERSION: JSON.stringify(process.env.npm_package_version),
     },