From Landscape to Atlas: Multi-Route Cartography of an Ongoing Expedition Toward the Riemann Hypothesis

3.0 Changelog (26 May 2026): Structural reorganisation from trilogy to five-part series ("From Landscape to Atlas"). Conditional reduction status unchanged. Title changed: "From Landscape to Atlas: Multi-Route Cartography of an Ongoing Expedition Toward the Riemann Hypothesis". Five-part structure: Part I Foundations, Part II Even Dominance / Branch A, Part III Spectral Routes / Branches B and Z, Part IV Cross-Route Synthesis, Part V Conclusio. English and German versions are included for all five parts. Part III refit: multiplicative canonical form Aλ(δ) = AΞ(δ)(1+κ(λ)δ2) with κ(20)=1.527×10-3 and conservative saturation range κ∞ ∈ [1.6,1.8]×10-3. Theorem B-1 remains conditional on uniform log-curvature…