feat: tooltips InvestigationView/BruteForce/HeaderFingerprint + fix RouteTracker
- InvestigationView: InfoTip sur Risk Score, JA4 Rotation, TCP Spoof,
Persistance, UA/CH mismatch, Browser score, JA4 distincts, JA4 rares,
JA4 Légitimes (baseline)
- BruteForceView: tooltip Params combos, Top JA4, Credential Stuffing, Énumération
- HeaderFingerprintView: tooltip colonnes Hash cluster, Browser Score,
UA/CH Mismatch %, Sec-Fetch modes
- App.tsx: RouteTracker ignore /investigation/ip/ (route alias)
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>