fix: update API and resource URLs to support local dev proxy and absolute paths

fix(frontend): update api endpoints to use VITE_API_URL and fix syntax errors

fix(frontend): polyfill node:crypto for browser to fix x402 payment flow

fix(frontend): use VITE_API_URL and disable browser agent registration

fix(mcp): replace undefined callCryptoComMcp with callCryptoComTool

fix: correct template literal syntax in documentation example

refactor: replace hardcoded localhost URLs with environment variables

fix: remove railway.toml to enable per-service Dockerfile config

fix: use tsup for indexers build (tsc had noEmit:true)

fix: use --no-dts instead of --dts false for tsup

fix: use tsup bundler for graphql build to handle .ts imports

fix: allow ts extensions and bundler resolution for backend build

fix: remove extends from tsconfig to exclude frontend files

fix: add uuid dependency and update tsconfig

fix: exclude frontend files from backend build