perf: defer heavy modules and add performance baselines

Lazy-load Stripe and the chat reply animation, remove the unused Lottie runtime, and add repeatable bundle and Web Vitals baseline tooling.

pnpm-lock.yaml

@@ -35,9 +35,6 @@ importers:
       esbuild:
         specifier: ^0.25.0
         version: 0.25.12
-      lottie-react:
-        specifier: ^2.4.1
-        version: 2.4.1(react-dom@19.2.4(react@19.2.4))(react@19.2.4)
       lucide-react:
         specifier: ^1.18.0
         version: 1.18.0(react@19.2.4)
@@ -2884,15 +2881,6 @@ packages:
     resolution: {integrity: sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==}
     hasBin: true
 
-  lottie-react@2.4.1:
-    resolution: {integrity: sha512-LQrH7jlkigIIv++wIyrOYFLHSKQpEY4zehPicL9bQsrt1rnoKRYCYgpCUe5maqylNtacy58/sQDZTkwMcTRxZw==}
-    peerDependencies:
-      react: ^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0
-      react-dom: ^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0
-
-  lottie-web@5.13.0:
-    resolution: {integrity: sha512-+gfBXl6sxXMPe8tKQm7qzLnUy5DUPJPKIyRHwtpCpyUEYjHYRJC/5gjUvdkuO2c3JllrPtHXH5UJJK8LRYl5yQ==}
-
   lru-cache@11.5.1:
     resolution: {integrity: sha512-RPimw/7aMdv2oqRrxKwvZXcPfwBrn/JZ2xYcY9Hus/6LaS3VOAKVWKWgNLCFSiOm1ESXinjsDlidVU7JlnCN2A==}
     engines: {node: 20 || >=22}
@@ -6739,14 +6727,6 @@ snapshots:
     dependencies:
       js-tokens: 4.0.0
 
-  lottie-react@2.4.1(react-dom@19.2.4(react@19.2.4))(react@19.2.4):
-    dependencies:
-      lottie-web: 5.13.0
-      react: 19.2.4
-      react-dom: 19.2.4(react@19.2.4)
-
-  lottie-web@5.13.0: {}
-
   lru-cache@11.5.1: {}
 
   lru-cache@5.1.1: