feat: company-prefixed routing, delete tests, docs favicon, and skills

Add company-prefix URL routing utilities and custom router wrapper.
Add CLI company delete confirmation tests. Add docs favicon and
para-memory-files skill.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

cli/src/__tests__/company-delete.test.ts

@@ -0,0 +1,87 @@
+import { describe, expect, it } from "vitest";
+import type { Company } from "@paperclip/shared";
+import { assertDeleteConfirmation, resolveCompanyForDeletion } from "../commands/client/company.js";
+
+function makeCompany(overrides: Partial<Company>): Company {
+  return {
+    id: "11111111-1111-1111-1111-111111111111",
+    name: "Alpha",
+    description: null,
+    status: "active",
+    issuePrefix: "ALP",
+    issueCounter: 1,
+    budgetMonthlyCents: 0,
+    spentMonthlyCents: 0,
+    requireBoardApprovalForNewAgents: false,
+    brandColor: null,
+    createdAt: new Date(),
+    updatedAt: new Date(),
+    ...overrides,
+  };
+}
+
+describe("resolveCompanyForDeletion", () => {
+  const companies: Company[] = [
+    makeCompany({
+      id: "11111111-1111-1111-1111-111111111111",
+      name: "Alpha",
+      issuePrefix: "ALP",
+    }),
+    makeCompany({
+      id: "22222222-2222-2222-2222-222222222222",
+      name: "Paperclip",
+      issuePrefix: "PAP",
+    }),
+  ];
+
+  it("resolves by ID in auto mode", () => {
+    const result = resolveCompanyForDeletion(companies, "22222222-2222-2222-2222-222222222222", "auto");
+    expect(result.issuePrefix).toBe("PAP");
+  });
+
+  it("resolves by prefix in auto mode", () => {
+    const result = resolveCompanyForDeletion(companies, "pap", "auto");
+    expect(result.id).toBe("22222222-2222-2222-2222-222222222222");
+  });
+
+  it("throws when selector is not found", () => {
+    expect(() => resolveCompanyForDeletion(companies, "MISSING", "auto")).toThrow(/No company found/);
+  });
+
+  it("respects explicit id mode", () => {
+    expect(() => resolveCompanyForDeletion(companies, "PAP", "id")).toThrow(/No company found by ID/);
+  });
+
+  it("respects explicit prefix mode", () => {
+    expect(() => resolveCompanyForDeletion(companies, "22222222-2222-2222-2222-222222222222", "prefix"))
+      .toThrow(/No company found by shortname/);
+  });
+});
+
+describe("assertDeleteConfirmation", () => {
+  const company = makeCompany({
+    id: "22222222-2222-2222-2222-222222222222",
+    issuePrefix: "PAP",
+  });
+
+  it("requires --yes", () => {
+    expect(() => assertDeleteConfirmation(company, { confirm: "PAP" })).toThrow(/requires --yes/);
+  });
+
+  it("accepts matching prefix confirmation", () => {
+    expect(() => assertDeleteConfirmation(company, { yes: true, confirm: "pap" })).not.toThrow();
+  });
+
+  it("accepts matching id confirmation", () => {
+    expect(() =>
+      assertDeleteConfirmation(company, {
+        yes: true,
+        confirm: "22222222-2222-2222-2222-222222222222",
+      })).not.toThrow();
+  });
+
+  it("rejects mismatched confirmation", () => {
+    expect(() => assertDeleteConfirmation(company, { yes: true, confirm: "nope" }))
+      .toThrow(/does not match target company/);
+  });
+});