readme: final project stats (992 commits, 284 findings D1-D406); mark the agentic-development case study as a v0.3.0-era snapshot (through 20 Sep / D321), with the README carrying the final numbers

README.md

@@ -237,8 +237,8 @@ asset pipeline, first frames), and **Claude Code** (Sonnet 5, Opus 5 for the
 hardest bugs) joining for the collaborative phase (the 21-level sweep, the
 ABI finding catalog, SDL input, front end), handing work back and forth
 through shared written notes, directed by one person part-time. In short:
-43 days (16 Aug – 28 Sep), 981 commits, 283 findings root-caused and logged
-(`D1`–`D405`).
+43 days (16 Aug – 28 Sep), 992 commits, 284 findings root-caused and logged
+(`D1`–`D406`).
 
 The full write-up (timeline, handoff mechanism, effort breakdown, an honest
 "what worked / what didn't"): [`docs/dev/agentic-development.md`](docs/dev/agentic-development.md).

docs/dev/agentic-development.md

@@ -11,6 +11,10 @@ work back and forth through shared written notes, under one person's
 part-time direction. The goal, the setup, the timeline, and an honest read on
 what did and didn't work.*
 
+> *Snapshot as of the v0.3.0 milestone (20 Sep 2026; findings through D321).
+> v0.4.0 (28 Sep) extended the timeline with the options/input work -- the
+> README's Background section carries the final project numbers.*
+
 ## Contents
 
 - [Why this project exists](#why-this-project-exists)