Network Payload Capture 3000

[pauldambra]

Feature request

There are a bunch of improvements we need to make here. Let's write them down

in no particular order

• be able to ship multiple versions of the recorder code
  • setup so we can control what script is loaded by team via decide
  • setup so that we can bundle two versions of the recorder code
• improve the testing
• separate the posthog specific and rrweb code so we can contribute back upstream
• make the fetch wrapper more transparent (e.g. store ...args clone any streams and use the clones or similar
  • e.g. private link https://posthog.slack.com/archives/C046YCXSZ2Q/p1732902582471589
• start wrapping websocket as well as fetch
• add capture separate from replay so we can store a queryable version of a subset of the network data

Debug info

- [ ] PostHog Cloud, Debug information: [please copy/paste from https://us.posthog.com/settings/project-details#variables]
- [ ] PostHog Hobby self-hosted with `docker compose`, version/commit: [please provide]
- [ ] PostHog self-hosted with Kubernetes (deprecated, see [`Sunsetting Kubernetes support`](https://posthog.com/blog/sunsetting-helm-support-posthog)), version/commit: [please provide]