Phase 14: reinjectNow loose fallback for --skill paths — B-002 now command

resolveReinjectSkillNames includes tracked skills on disk when requireRegistered is false so /skill-reinject now works without resourceLoader entry.

Co-authored-by: Cursor <cursoragent@cursor.com>

test/reinject-now-loose.test.ts

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+import { mkdtempSync, mkdirSync, rmSync, writeFileSync } from "fs";
+import { tmpdir } from "os";
+import { join } from "path";
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { reinjectNow, resolveReinjectSkillNames } from "../src/reinject";
+import { createDefaultSettings } from "../src/settings";
+import { createInitialState, trackSkill } from "../src/state";
+
+const tempDirs: string[] = [];
+
+afterEach(() => {
+	for (const dir of tempDirs.splice(0)) {
+		rmSync(dir, { recursive: true, force: true });
+	}
+});
+
+function tempSkillDir(name: string): { filePath: string; baseDir: string } {
+	const root = mkdtempSync(join(tmpdir(), "pi-skill-reinject-now-"));
+	tempDirs.push(root);
+	const baseDir = join(root, name);
+	mkdirSync(baseDir, { recursive: true });
+	const filePath = join(baseDir, "SKILL.md");
+	writeFileSync(filePath, "# skill\n", "utf8");
+	return { filePath, baseDir };
+}
+
+describe("resolveReinjectSkillNames", () => {
+	it("includes loose tracked skill when file exists and requireRegistered is false", () => {
+		const { filePath, baseDir } = tempSkillDir("loose");
+		const state = createInitialState();
+		trackSkill(state, { name: "loose", filePath, baseDir, source: "slash" });
+
+		expect(resolveReinjectSkillNames(state, createDefaultSettings(), [])).toEqual(["loose"]);
+	});
+
+	it("excludes unregistered skills when requireRegistered is true", () => {
+		const { filePath, baseDir } = tempSkillDir("strict");
+		const state = createInitialState();
+		trackSkill(state, { name: "strict", filePath, baseDir, source: "slash" });
+		const settings = createDefaultSettings();
+		settings.requireRegistered = true;
+
+		expect(resolveReinjectSkillNames(state, settings, [])).toEqual([]);
+	});
+});
+
+describe("reinjectNow loose path", () => {
+	it("sends skill block from disk for unregistered tracked skill", () => {
+		const { filePath, baseDir } = tempSkillDir("loose");
+		const state = createInitialState();
+		trackSkill(state, { name: "loose", filePath, baseDir, source: "slash" });
+		const sendUserMessage = vi.fn();
+		const pi = { sendUserMessage } as never;
+		const ctx = { hasUI: false, isIdle: () => true } as never;
+
+		reinjectNow(pi, state, createDefaultSettings(), ctx, []);
+
+		expect(sendUserMessage).toHaveBeenCalledTimes(1);
+		expect(sendUserMessage.mock.calls[0]?.[0]).toContain('<skill name="loose"');
+	});
+});