SKILL: HTTP Request Smuggling — Expert Attack Playbook AI LOAD INSTRUCTION : Expert HTTP desync techniques. Covers CL.TE, TE.CL, TE.TE obfuscation variants, HTTP/2 downgrade and pseudo-header confusion, client-side desync (browser pipelines), and tool-assisted fuzzing. Assumes familiarity with raw HTTP/1.1 framing and reverse-proxy topologies. This is not “header injection” — it is message boundary disagreement between hops. Routing note: load this skill when you suspect CDN/reverse-proxy and origin disagree on request-end boundaries, or when abnormal concatenation appears during H2-to-H1 dow…