feat: add product-aware deletion emails and subdomain deletion/downloads routes

- Extend DeletionForm with product discriminator and configurable cooldown cookie
- Extract env-free deletion email helpers into deletion-email.ts with Lineage/Nessa branding
- Make misc.sendDeletionRequestEmail mutation product-aware (subject, html content, cookie)
- Replace legacy /deletion/life-and-lineage page with 308 redirect to lineage subdomain
- Add Lineage and Nessa subdomain deletion route modules with shared content components
- Add Lineage downloads route modules with shared content
- Update privacy policy deletion link to lineage subdomain

src/routes/nessa/deletion-content.test.ts

@@ -0,0 +1,84 @@
+/**
+ * Unit tests for the Nessa per-subdomain account-deletion page content
+ * (task 11).
+ *
+ * Asserts against pure constants exported from `deletion-content.ts` — no
+ * solid-js / router / DOM. Covers the task-11 acceptance matrix for the
+ * Nessa deletion flow:
+ *  - Product discriminator is `"nessa"` (selects Nessa-branded email).
+ *  - Cooldown cookie name is Nessa-specific + matches the server-side
+ *    `deletionCookieName("nessa")`.
+ *  - PageHead base title + description.
+ *  - (Assessment rationale documented in `deletion-content.ts`.)
+ */
+import { describe, it, expect } from "bun:test";
+import {
+  DELETION_PRODUCT_KEY,
+  DELETION_COOKIE_NAME,
+  DELETION_GRACE_PERIOD_LABEL,
+  PAGE_META
+} from "~/routes/nessa/deletion-content";
+import {
+  DELETION_PRODUCT_SCHEMA,
+  deletionCookieName
+} from "~/server/api/routers/deletion-email";
+
+describe("Nessa deletion — assessment outcome", () => {
+  it("defines a product discriminator (deletion flow IS implemented)", () => {
+    // Nessa stores user data (nessa.ts: users, workouts, workoutPlans, … +
+    // nessa-community.ts: clubs, clubMemberships). Per task 11 spec step 5,
+    // a deletion flow IS needed — this page provides it.
+    expect(typeof DELETION_PRODUCT_KEY).toBe("string");
+  });
+});
+
+describe("Nessa deletion — product discriminator", () => {
+  it("is \"nessa\" (selects Nessa-branded email)", () => {
+    expect(DELETION_PRODUCT_KEY).toBe("nessa");
+  });
+
+  it("is accepted by the server-side product schema", () => {
+    expect(DELETION_PRODUCT_SCHEMA.safeParse(DELETION_PRODUCT_KEY).success).toBe(
+      true
+    );
+  });
+});
+
+describe("Nessa deletion — cooldown cookie", () => {
+  it("uses a Nessa-specific cookie name (independent of Lineage cooldown)", () => {
+    expect(DELETION_COOKIE_NAME).toBe("nessaDeletionRequestSent");
+  });
+
+  it("matches the server-side deletionCookieName(\"nessa\")", () => {
+    expect(DELETION_COOKIE_NAME).toBe(
+      deletionCookieName(DELETION_PRODUCT_KEY)
+    );
+  });
+
+  it("does NOT collide with the Lineage cooldown cookie", () => {
+    expect(DELETION_COOKIE_NAME).not.toBe("deletionRequestSent");
+  });
+});
+
+describe("Nessa deletion — grace period label", () => {
+  it("surfaces a human-readable 24-hour label in the copy", () => {
+    expect(DELETION_GRACE_PERIOD_LABEL).toBe("24-hour");
+  });
+});
+
+describe("Nessa deletion — PageHead inputs", () => {
+  it("passes the base title (suffix is appended by PageHead)", () => {
+    expect(PAGE_META.title).toBe("Account Deletion");
+  });
+
+  it("does not pre-bake the site suffix into the title", () => {
+    expect(PAGE_META.title).not.toContain("|");
+  });
+
+  it("description mentions Nessa + data removal + grace period", () => {
+    const desc = PAGE_META.description.toLowerCase();
+    expect(desc).toContain("nessa");
+    expect(desc).toContain("removed");
+    expect(desc).toContain("24-hour");
+  });
+});