{
  "_comment": "TVG4 topology — the diagram IS this file.  Now down to the IMPLEMENTATION modules + the recursive TVG4 result-tile.  Cosmetic DEMO tiles (node-module, edge-panel, pan-zoom, drag, select, edge-define, positions, viewer-panel) were removed once the kernel started loading the real .js modules directly.  Surviving nodes form a dependency waterfall top-left → bottom-right: foundations (no deps), composites, viewer, kernel, recursion.  ARCHITECTURAL REQUIREMENT: each module exists independent of every other module; modules interact ONLY through the standard interface (dataflow channels + scene); ONLY this topology file defines relationships between modules.  Adding `\"active\": false` to any node deactivates that module without touching its source — the kernel skips its import.",
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      "src": "/demo/topology-io.html",
      "module": "/topology-io.js",
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          "type": "topology"
        },
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}