[imMamdouhaboammar]

Summary

This PR upgrades REM From FunnelScript with production-grade build automation, signal collection hardening, and web UI usability enhancements:

Changes

1. Toolchain Automation (Makefile):

   • make all: build + test + lint
   • make build: builds optimized, stripped binary with -trimpath -ldflags="-s -w"
   • make test: runs race detector across all packages (-race -count=1)
   • make lint: runs go vet ./...
   • make smoke: automated end-to-end smoke test on a live target (linear.app)
   • make install: installs binary to $(GOPATH)/bin/rem
   • make cross: cross-compiles for linux/amd64 and darwin/arm64 into dist/

2. Collector Hardening:

   • Expanded tracking tags in internal/collect/tracking.go: added amazon_ads, criteo, outbrain, and taboola.
   • Enhanced AI search policy extraction in internal/collect/seo.go: analyzes llms.txt to evaluate access stance (allowsLLMs) for LLM crawlers.

3. Web UI Ergonomics:

   • Added instant "Copy report" button to index.html & app.js with auto-resetting feedback.
   • Updated README.md documentation.