chore: snapshot pre-v0.2.0 WIP (pathfinder/reflex/metrics/skills improvements)

Baseline for the v0.2.0 self-learning iteration. All 205 tests pass on this
state. Subsequent commits in this branch layer the knowledge base,
post-mortem coach, and persona narration on top.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

runtime/skills/sleep.js

@@ -0,0 +1,44 @@
+// survive.sleep — use the action-layer bed primitive through the skill
+// contract so priority modes can sleep without bypassing metrics,
+// scenario-memory, current-task, and self-improvement evidence.
+
+import { sleepInBed } from "../actions.js";
+
+export const skill = Object.freeze({
+	id: "survive.sleep",
+	title: "Sleep in or place a carried bed",
+	timeoutMs: 45_000,
+	preconditions(ctx) {
+		if (!ctx?.bot) return { ok: false, code: "no_bot", detail: "bot missing" };
+		if (ctx.snapshot?.isDay) return { ok: false, code: "daytime", detail: "not night" };
+		const inv = ctx.snapshot?.inventory ?? {};
+		const hasBed = Object.keys(inv).some((n) => /_bed$/.test(n));
+		const knownBed = ctx.snapshot?.locations?.shelter || ctx.snapshot?.locations?.base;
+		if (!hasBed && !knownBed) {
+			return { ok: false, code: "missing_bed", detail: "no bed in inventory or known shelter" };
+		}
+		return { ok: true };
+	},
+	async execute(ctx) {
+		const res = await sleepInBed(ctx.bot);
+		if (res.ok) {
+			return {
+				ok: true,
+				code: "done",
+				detail: res.detail,
+				worldDelta: { sleptAt: res.detail?.bedAt ?? ctx.snapshot?.position ?? null },
+			};
+		}
+		const msg = String(res.detail ?? "");
+		const code = msg.includes("no bed")
+			? "missing_bed"
+			: msg.includes("timed out")
+				? "timeout"
+				: "failed";
+		return { ok: false, code, detail: res.detail, worldDelta: null };
+	},
+	recover(ctx, result) {
+		if (result.code === "missing_bed") return { hint: "curriculum", reason: "need bed milestone" };
+		return null;
+	},
+});