research: Strudel.cc live-coding REPL deep dive; SHARD-WP-0004 T5

Code as live time-based audio performance; the far live end of the
live<->snapshot axis (no faithful static form; static = source + marked
recording). The honesty test for graceful degradation. Enrichment-only
(UC-54/55). Marks T5 done — all 8 batch tasks complete.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

research/260614-strudel-deep-dive/README.md

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+# 260614 — Strudel.cc (live-coding REPL) deep dive
+
+Date: 2026-06-14 · Source: **SHARD-WP-0004 T5**
+
+## What this is
+
+A deep dive into **Strudel.cc** (the JavaScript port of **TidalCycles**): a browser
+**live-coding REPL** where terse **pattern source** is **evaluated live into time-based
+audio** — code as a running musical performance, with **no document, no output cell, no file
+of results**.
+
+## Why it matters
+
+- The **extreme of the live↔snapshot axis** (named at T6): output is **temporal, generative,
+  performative**, so there is **no faithful static form** — the best static projection is
+  **source (canonical, diffable) + an optional audio recording snapshot**, marked as one
+  performance. The **honesty test** for union-without-erasure + graceful degradation.
+- Bounds the projection model's live end: ahead-of-time → view-time one-shot → continuous →
+  **irreducibly live/temporal (recording-only)**.
+
+## Yield
+
+- **No new UC** (enrichment / design prior art; far live end). Enriches **UC-54, UC-55**;
+  links UC-83/84, UC-37, UC-35.
+
+## Contents
+
+| Path | Role |
+|------|------|
+| `findings.md` | Code-as-live-performance, the limit of static projection, INTENT mapping, UC disposition (enrichment-only), architecture notes (T16 far end of live↔snapshot axis) |