update RX_BUILD_BACKEND

[adhami3310]

No description provided.

[greptile-apps]

Greptile Summary

This PR makes two changes to pcweb/constants.py: it removes the unused RX_CLOUD_BACKEND constant and updates the default value of RX_BUILD_BACKEND from https://build-backend.reflex.dev/ to https://build.reflex.dev/api/. The new URL aligns with the existing REFLEX_CLOUD_URL and REFLEX_BUILD_URL constants already pointing to build.reflex.dev, consolidating the domain used for Reflex build infrastructure.

• RX_CLOUD_BACKEND is confirmed to be unused across the codebase — its removal is safe.
• RX_BUILD_BACKEND is consumed in pcweb/pages/landing/views/hero.py where it is used as the base for the /prompt API call (RX_BUILD_BACKEND.rstrip("/") + "/prompt"); the new default resolves to https://build.reflex.dev/api/prompt, which is the intended endpoint after this change.
• The section comment # Reflex Cloud Backend is now stale and should be updated to # Reflex Build Backend.

Confidence Score: 5/5

• This PR is safe to merge — it removes an unused constant and updates a backend URL default value with no logic changes.
• The change is minimal: one constant is deleted (confirmed unused via codebase search) and one URL default is updated. The call site in hero.py handles trailing slashes correctly with rstrip("/"), so the new /api/ suffix in the default URL is handled cleanly. No logic, tests, or other files are affected.
• No files require special attention.

Important Files Changed

Filename	Overview
pcweb/constants.py	Removes the unused RX_CLOUD_BACKEND constant and updates the default URL for RX_BUILD_BACKEND from https://build-backend.reflex.dev/ to https://build.reflex.dev/api/. The section comment # Reflex Cloud Backend is now stale since only the build backend constant remains.

_{Last reviewed commit: "update RX_BUILD_BACK..."}

[greptile-apps]

Stale section comment

The section comment # Reflex Cloud Backend is now inaccurate — RX_CLOUD_BACKEND has been removed and only RX_BUILD_BACKEND remains. The comment should be updated to reflect what the section actually contains.

Suggested change

	# Reflex Cloud Backend
	RX_CLOUD_BACKEND = os.getenv("RX_CLOUD_BACKEND", "https://cloud-backend.reflex.dev/")
	RX_BUILD_BACKEND = os.getenv("RX_BUILD_BACKEND", "https://build-backend.reflex.dev/")
	RX_BUILD_BACKEND = os.getenv("RX_BUILD_BACKEND", "https://build.reflex.dev/api/")
	# Reflex Build Backend
	RX_BUILD_BACKEND = os.getenv("RX_BUILD_BACKEND", "https://build.reflex.dev/api/")