Edges from theme edgeDefault — remove hardcoded literal
Replaces the hardcoded rgba(100,130,180,0.55) edge color literal with themeTokens.graph.edgeDefault (per-theme: solar=blue, obsidian=purple, midnight=amber, void=pink). Pre-flight trace revealed the style layer was already theme-derived; this fixes build-time to match.
v103.0.32026-06-02
·buildGraphologyGraph.ts:111: literal → themeTokens.graph.edgeDefault; all 6 themes now have distinct edge colors at build time
·Adapter-set edge.raw.color still wins (ownership contract)
·Pre-flight trace: resolveGraphVisualTokens already mapped edgeDefault → edgeColor.default and AppShell passed resolvedGraphTokens correctly — the literal was being overridden by the style layer at runtime anyway; this pass makes build-time consistent and removes the dead constant