إعادة التوجيهات وتطبيع URL: عنوان واحد لكل صفحة

Every site has 4 default front doors: http and https, with and without www. A visitor or a crawler can arrive at any of them. Normalization collapses those into 1 canonical address reached in a single 301 hop, so link equity, analytics and cookies all land in the same place. Redirect problems compound rather than announce themselves. A chain forms when an old rule and a new rule both fire, turning one request into 3 hops. Each hop costs latency and dilutes the signal, and crawlers abandon long chains. A loop forms when 2 rules disagree about the canonical form, one appending a trailing slash and the other stripping it, and the page becomes unreachable for everyone, including the crawler that would have reported it. Redirects also carry a security dimension. An http URL that stays on http leaves a plaintext hop where a response can be modified in transit, and it splits the site into 2 addresses in the eyes of search engines. The checks below follow every hop from the outside, the way a crawler does, and report the full path rather than only the destination. Fix the rules at the edge, in 1 place, so a new redirect replaces the old ones instead of stacking on top of them.