chore(webapp): address CodeRabbit review nits

- Remove unused `cond` import from `effect/STM` in `schedules.new` route.
- Drop the leading slash from `docsPath("ai-chat/sessions")` in two
  spots so the generated URL doesn't double up on `/`.

Author: samejr

apps/webapp/app/components/BlankStatePanels.tsx

@@ -198,7 +198,7 @@ export function SessionsNone() {
       panelClassName="max-w-full"
       accessory={
         <LinkButton
-          to={docsPath("/ai-chat/sessions")}
+          to={docsPath("ai-chat/sessions")}
           variant="docs/small"
           LeadingIcon={BookOpenIcon}
         >

apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.sessions._index/route.tsx

@@ -84,7 +84,7 @@ export default function Page() {
           <LinkButton
             variant={"docs/small"}
             LeadingIcon={BookOpenIcon}
-            to={docsPath("/ai-chat/sessions")}
+            to={docsPath("ai-chat/sessions")}
           >
             Sessions docs
           </LinkButton>

apps/webapp/app/routes/resources.orgs.$organizationSlug.projects.$projectParam.env.$envParam.schedules.new/route.tsx

@@ -58,7 +58,6 @@ import { AIGeneratedCronField } from "../resources.orgs.$organizationSlug.projec
 import { TimezoneList } from "~/components/scheduled/timezones";
 import { logger } from "~/services/logger.server";
 import { Spinner } from "~/components/primitives/Spinner";
-import { cond } from "effect/STM";
 import { useEnvironment } from "~/hooks/useEnvironment";
 
 const cronFormat = `*    *    *    *    *