docs: point Signal & Noise links at self-hosted version

Replace all four references to the Claude public artifact URL with the
self-hosted version at eric-turner.com/memex/signal-and-noise.html plus
the offline-capable archive at docs/artifacts/signal-and-noise.html.

The Claude artifact can now be unpublished without breaking any links
in the repo. The self-hosted HTML is deployed to the Hugo site's static
directory and lives alongside the archived copy in this repo — either
can stand on its own.

README.md

@@ -103,8 +103,8 @@ keeping cross-references intact, and flagging ambiguity for review.
 ## Why each part exists
 
 Before implementing anything, the design was worked out interactively
-with Claude as a [Signal & Noise analysis of Karpathy's
+with Claude as a
-pattern](https://claude.ai/public/artifacts/0f6e1d9b-3b8c-43df-99d7-3a4328a1620c).
+[Signal & Noise analysis of Karpathy's pattern](https://eric-turner.com/memex/signal-and-noise.html).
 That analysis found seven real weaknesses in the core pattern. This
 repo exists because each weakness has a concrete mitigation — and
 every component maps directly to one:
@@ -414,20 +414,20 @@ and how to adapt for other agents).
 **Design process** — this repo was designed interactively with Claude
 as a structured Signal & Noise analysis before any code was written.
 The analysis walks through the seven real strengths and seven real
-weaknesses of the core pattern, then works through concrete mitigations
+weaknesses of Karpathy's pattern, then works through concrete
-for each weakness. Every component in this repo maps back to a specific
+mitigations for each weakness. Every component in this repo maps back
-mitigation identified there.
+to a specific mitigation identified there.
 
 - **Live interactive version**:
   [eric-turner.com/memex/signal-and-noise.html](https://eric-turner.com/memex/signal-and-noise.html)
-  (click tabs to explore pros/cons, vs RAG, use-case fits, signal
+  — click tabs to explore pros/cons, vs RAG, use-case fits, signal
-  breakdown, and mitigations)
+  breakdown, and mitigations
-- **Original Claude artifact**:
+- **Self-contained archive in this repo**:
-  [The LLM Wiki — Karpathy's Pattern — Signal & Noise](https://claude.ai/public/artifacts/0f6e1d9b-3b8c-43df-99d7-3a4328a1620c)
-- **Archived copy in this repo**:
   [`docs/artifacts/signal-and-noise.html`](docs/artifacts/signal-and-noise.html)
+  — download and open locally; works offline
 - **Condensed written version**:
   [`docs/DESIGN-RATIONALE.md`](docs/DESIGN-RATIONALE.md)
+  — every tradeoff and mitigation rendered as prose
 
 ---
 

docs/DESIGN-RATIONALE.md

@@ -7,13 +7,17 @@ Before implementing anything, the design was worked out interactively
 with Claude as a structured Signal & Noise analysis of Andrej Karpathy's
 original persistent-wiki pattern:
 
-> **Interactive design artifact**: [The LLM Wiki — Karpathy's Pattern — Signal & Noise](https://claude.ai/public/artifacts/0f6e1d9b-3b8c-43df-99d7-3a4328a1620c)
+> **Interactive version**: [eric-turner.com/memex/signal-and-noise.html](https://eric-turner.com/memex/signal-and-noise.html)
+> — tabs for pros/cons, vs RAG, use-case fits, signal breakdown, mitigations
+>
+> **Self-contained archive**: [`artifacts/signal-and-noise.html`](artifacts/signal-and-noise.html)
+> — same content, works offline
 
-That artifact walks through the pattern's seven genuine strengths, seven
+The analysis walks through the pattern's seven genuine strengths, seven
 real weaknesses, and concrete mitigations for each weakness. This repo
 is the implementation of those mitigations. If you want to understand
-*why* a component exists, the artifact has the longer-form argument; this
+*why* a component exists, the interactive version has the longer-form
-document is the condensed version.
+argument; this document is the condensed written version.
 
 ---
 
@@ -330,8 +334,10 @@ architecture is probably what you need.
   — the concept
 - [mempalace](https://github.com/milla-jovovich/mempalace) — the
   structural memory layer
-- [Signal & Noise interactive analysis](https://claude.ai/public/artifacts/0f6e1d9b-3b8c-43df-99d7-3a4328a1620c)
+- [Signal & Noise interactive analysis](https://eric-turner.com/memex/signal-and-noise.html)
-  — the design rationale this document summarizes
+  — the design rationale this document summarizes (live interactive version)
+- [`artifacts/signal-and-noise.html`](artifacts/signal-and-noise.html)
+  — self-contained archive of the same analysis, works offline
 - [README](../README.md) — the concept pitch
 - [ARCHITECTURE.md](ARCHITECTURE.md) — component deep-dive
 - [SETUP.md](SETUP.md) — installation