docs: CLAUDE.md becomes a core plus path-scoped rules (R-229)

215 lines -> 110 (92 effective; block-level HTML comments are stripped before
injection and never reach the model, verified empirically on Claude Code 2.1.222
with a control and a treatment run).

Four new .claude/rules/*.md, each with a paths: glob list so it loads only when a
matching file is read: gates, ui-hungarian, backup-paths, agent-coupling.

The ## Layout tree was deleted as derivable; REUSE.md already owns the per-package
seams its annotations stood in for. The host/access table was deleted in favour of
a pointer to documentation/operations/nodes.md -- it carried three defects at once:
demo-felhom given as the LAN fallback address as if it were the route, a pinned
"agent 0.93.0" against the project's own no-versions-in-docs rule, and the claim
that no drill VM was provisioned on demo-hp. Measured live: qm list shows VM 300
drill-r50. felhom-agent/CLAUDE.md was right; this file was wrong.

Kept verbatim: the seven session-critical invariants, the F9 live-validation fence,
the end-of-session checklist.

controller_gates.py registers the shared instructions gate (felhom.eu/scripts/,
never copied here; an absent sibling clone FAILS).

Docs only -- no Go, no version bump, no image, no deploy.
Ledger: felhom.eu/documentation/audits/LEDGER-instruction-trim-2026-08-06.md

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JJc8sAGRWmavP3rMtdpkr2

CHANGELOG.md

@@ -1,3 +1,28 @@
+## docs — CLAUDE.md split into a core plus path-scoped rules (2026-08-06, R-229) — no version bump
+
+**Documentation and gate registration only. No Go changed, no image built, no deploy.**
+
+`CLAUDE.md` went from 215 lines to 110 (92 *effective* — block-level HTML comments are stripped
+before injection and never reach the model, verified empirically on Claude Code 2.1.222 with a
+control and a treatment run). What moved, rather than what was cut, is the point:
+
+- Four new `.claude/rules/*.md`, each carrying a `paths:` glob list so it loads only when a matching
+  file is read: `gates.md`, `ui-hungarian.md`, `backup-paths.md`, `agent-coupling.md`.
+- The `## Layout` tree was deleted as derivable (`ls controller/internal/`); `REUSE.md` already owns
+  the per-package seams and traps its annotations stood in for.
+- The host/access table was deleted in favour of a pointer to `documentation/operations/nodes.md`.
+  **It carried three defects at once:** `demo-felhom` given as plain `root@192.168.0.162` (the LAN
+  *fallback*, not the route), a pinned `agent 0.93.0` against the project's own no-versions-in-docs
+  rule, and the claim that no drill VM was provisioned on `demo-hp`. **Measured live 2026-08-06:**
+  `qm list` shows VM `300 drill-r50`. `felhom-agent/CLAUDE.md` was right; this file was wrong.
+- The seven session-critical invariants, the F9 live-validation fence and the end-of-session
+  checklist were kept verbatim — they are the file's highest-value content.
+
+`controller_gates.py` now registers **`instructions`**, the shared
+`felhom.eu/scripts/instructions_gate.py`. Never copied here; an absent sibling clone FAILS.
+
+Full per-block accounting: `felhom.eu/documentation/audits/LEDGER-instruction-trim-2026-08-06.md`.
+
 ## v0.202.0 — the customer is blamed only after a real attempt refused their code (2026-08-06, R-224/R-226/R-225/R-227/R-228) — MinAgent 0.126.0
 
 **CAMPAIGN-11's headline defect had moved, not gone.** v0.201.0 stopped an agent that is too OLD from