Update actor split idea file

AGENTS.md

@@ -5,7 +5,7 @@
 <!-- REPOWISE_AGENTS:START — Do not edit below this line. Auto-generated by Repowise. -->
 ## Codebase Intelligence for ottyl (Repowise)
 
-Indexed by [Repowise](https://repowise.dev). Last indexed: 2026-09-07 (commit dbe2ea9). Confidence: 100%.
+Indexed by [Repowise](https://repowise.dev). Last indexed: 2026-09-07 (commit c7173cf). Confidence: 100%.
 ### How to work in this repo
 
 - **Trust the index.** `verified: true` and `_meta.complete` mean the bytes were checked against the live tree, so never re-read them. Re-read only what `bounds: "approximate"` or `_meta.stale_warning` names. `confidence` rates the prose, not the evidence: on `low` read the `fallback_targets` or `best_guesses` the reply names, and run `repowise update` and ask again if `_meta.hint` says the index is behind HEAD. `index_behind: true` alone is informational.
@@ -70,7 +70,7 @@ Covers the 3 source files in 2 directories under…
 - `webapp/src/components/Docs.tsx` — 1 bug fix, last fix today; 17 commits/90d
 
 ### Code health
-Three co-equal signals: defect risk 5.95/10 avg, hotspot health 4.94/10 (stable), worst `src/engine/snapshot/mod.rs` at 2.0/10 · maintainability 7.48/10 · performance risk 16 open static I/O-in-loop / N+1 findings. Detail: `get_health()`.
+Three co-equal signals: defect risk 5.95/10 avg, hotspot health 4.94/10 (declining), worst `src/engine/snapshot/mod.rs` at 2.0/10 · maintainability 7.48/10 · performance risk 16 open static I/O-in-loop / N+1 findings. Detail: `get_health()`.
 
 Critical files:
 - `webapp/src/components/LogPreview.tsx` — untested hotspot — impact −2.0