diff --git a/README.md b/README.md
index 04a8bfd..1fba751 100644
--- a/README.md
+++ b/README.md
@@ -17,10 +17,12 @@ wiki-context/
 │                                 # by wiki-vault/CLAUDE.md)
 ├── wiki-construct-project-plan.md  # Project plan with locked decisions
 ├── wiki-construct-context.md     # Design rationale + reasoning history
-├── skill/
-│   └── skill-wiki.md             # Bundle for the wiki-maintenance skill
-│                                 # (SKILL.md + compile.md + lint.md +
-│                                 # migration.md, copy-paste-ready)
+├── skill/                        # wiki-maintenance skill, split into files
+│   ├── skill-wiki.md             #   = SKILL.md (in sync with installed)
+│   ├── compile.md                #   compile procedure (in sync with installed)
+│   ├── lint.md                   #   lint procedure
+│   ├── migration.md              #   one-time migration runbook
+│   └── README.md                 #   bundle deploy preamble
 └── README.md                     # This file
 ```
 
@@ -31,7 +33,7 @@ wiki-context/
 | `wiki-construct-context.md` | The *why* — the two converging conversations that produced the project, the wiki-vs-OB1 framing decision, why flat structure won, etc. The load-bearing context that future Claude sessions in this project space should read first. |
 | `wiki-construct-project-plan.md` | The *what* — locked decisions, phases, tasks. Treated as a project plan, with frontmatter matching the wiki spec. |
 | `CLAUDE.md` | Early draft of the wiki spec. **Frozen** as a design-history record. The vault that actually got built has a different shape — see `wiki-vault/CLAUDE.md` for the canonical current spec. |
-| `skill/skill-wiki.md` | The contents of the `wiki-maintenance` skill bundle (4 files inside one for copy-paste deploy), used to populate `~/.claude/skills/wiki-maintenance/` on the host. |
+| `skill/` | The `wiki-maintenance` skill bundle, split into its four real files (`skill-wiki.md` = SKILL.md, `compile.md`, `lint.md`, `migration.md`) plus a deploy-preamble `README.md`. `compile.md` and `skill-wiki.md` were backported from the installed skill at `~/.claude/skills/wiki-maintenance/` on 2026-05-24 so the archive mirrors the live two-layer taxonomy. |
 
 ## How the design evolved
 
@@ -66,6 +68,19 @@ The project moved from this workspace into deployed reality in May 2026.
 This repo is kept around as the design archive. Open it when you need
 the rationale behind a vault decision; otherwise reach for `wiki-vault/`.
 
+**2026-05-24 session.** Split the single-file skill bundle into its four
+real files and backported `compile.md` + `skill-wiki.md` from the
+installed skill (the archived copies had drifted to the old flat-structure
+draft). On the live vault, ran the first steady-state compile since launch
+(34 backlogged sources → indexes + 5 entity refreshes + the
+`ai-memory-architecture` synthesis, plus correcting the long-standing
+"OB1 = Supabase" error to pgvector:pg17/`petalbrain`), the first lint pass,
+promoted 5 new entities (trellis, vault-mcp, petalbrain, knot-dns,
+herbyeos), and cleaned out 8 pipeline test artifacts + 3 stale worktrees.
+A compile-cadence nudge (n8n → Google Chat, triggered off a
+`wiki.compile_runs` table) was drafted to keep the vault from drifting
+again — see `docker/n8n/workflows/wiki-compile-nudge.json`.
+
 The leftover `main.py` / `pyproject.toml` / `uv.lock` / `.python-version`
 files at the root are uv-init artifacts; they aren't part of this
 workspace's purpose.