rewrite ideas/_index.org with full page listing

ideas/_index.org

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 #+title: Ideas
 #+filetags: :index:
 
-Section index for ideas. Browse by file.
+Cross-domain concepts, speculative analysis, and architectural thinking for the Passepartout project.
+
+**The three-pronged system series** — new tonight:
+
+- [[id:f4e5d6c7-b8a9-0c1d-2e3f-4a5b6c7d8e9f][Schafmeister and Clasp]] — Lisp in computational nanotechnology, existence proof for the architecture
+- [[id:7a8b9c0d-1e2f-3a4b-5c6d-7e8f9a0b1c2d][Open-source Wolfram Language in Lisp]] — viability of bootstrapping a Mathematica equivalent
+- [[id:8b9c0d1e-2f3a-4b5c-6d7e-8f9a0b1c2d3e][Passepartout bootstrapping Mathematica]] — what the neurosymbolic engine could generate autonomously
+- [[id:9c0d1e2f-3a4b-5c6d-7e8f-9a0b1c2d3e4f][Middle of the Knowledge Tree]] — the gap between logic and nanotechnology
+- [[id:0d1e2f3a-4b5c-6d7e-8f9a-0b1c2d3e4f5a][The Middle Domain as World Models]] — mapping empirical science onto world model architecture
+- [[id:1e2f3a4b-5c6d-7e8f-9a0b-1c2d3e4f5a6b][World Models — Plain Language]] — explanation without jargon
+- [[id:2f3a4b5c-6d7e-8f9a-0b1c-2d3e4f5a6b7c][Practical Powers of the Three-Pronged System]] — 10 concrete capabilities
+- [[id:3a4b5c6d-7e8f-9a0b-1c2d-3e4f5a6b7c8d][Architectural Integration]] — how the three prongs fit into Passepartout's subsystems and stages
+- [[id:4b5c6d7e-8f9a-0b1c-2d3e-4f5a6b7c8d9e][Neurological Software in the Empirical Middle]] — neural networks in the provenance framework
+- [[id:5c6d7e8f-9a0b-1c2d-3e4f-5a6b7c8d9e0f][Wider Implications]] — what the three-pronged system means for science, safety, regulation, and trust
+
+**Earlier ideas:**
+
+- [[id:2afd9a3c-e96a-54c7-ac77-a05a28065b4b][Biology as Proof of the Lisp Model]] — biological systems as evidence for Lisp architecture
+- [[id:2cdca4b0-6b41-44b4-acb0-af21d0e27b00][Orders of Magnitude — Time]] — a time-scale framework for the Passepartout roadmap