fix(waitlist): add delay before email to avoid rate limit (#61)

Co-authored-by: Ona <no-reply@ona.com>

.claude/skills/gpg-commit-signing/SKILL.md

@@ -0,0 +1,43 @@
+---
+name: gpg-commit-signing
+description: Sign git commits with GPG in non-interactive environments. Use when committing code and the `GPG_PRIVATE_KEY_PASSPHRASE` environment variable is available. Triggers on "commit", "sign commit", "GPG", "git commit -S", or any git operation requiring signed commits.
+---
+
+# GPG Commit Signing
+
+Sign commits in headless/non-interactive environments where `/dev/tty` is unavailable.
+
+## Workflow
+
+1. Check whether `GPG_PRIVATE_KEY_PASSPHRASE` is set:
+
+   ```bash
+   test -n "$GPG_PRIVATE_KEY_PASSPHRASE" && echo "available" || echo "not set"
+   ```
+
+   If not set, skip signing — commit without `-S`.
+
+2. Try a direct signed commit first — the environment may already have loopback pinentry configured:
+
+   ```bash
+   git commit -S -m "message"
+   ```
+
+   If this succeeds, no further steps are needed.
+
+3. If step 2 fails with a `/dev/tty` error, use `--pinentry-mode loopback` via a wrapper script:
+
+   ```bash
+   printf '#!/bin/sh\ngpg --batch --pinentry-mode loopback --passphrase "$GPG_PRIVATE_KEY_PASSPHRASE" "$@"\n' > /tmp/gpg-sign.sh
+   chmod +x /tmp/gpg-sign.sh
+   git -c gpg.program=/tmp/gpg-sign.sh commit -S -m "message"
+   rm /tmp/gpg-sign.sh
+   ```
+
+   This passes the passphrase directly to gpg on each signing invocation, bypassing the need for a configured gpg-agent.
+
+## Anti-patterns
+
+- Do not echo or log `GPG_PRIVATE_KEY_PASSPHRASE`.
+- Do not commit without `-S` when the passphrase is available — the project expects signed commits.
+- Do not leave wrapper scripts on disk after committing.

apps/aris-backend/.env.example

@@ -7,6 +7,11 @@ BETTER_AUTH_SECRET=
 # Base URL of the backend
 BETTER_AUTH_URL=http://localhost:3000
 
+# OpenRouter (LLM feed enhancement)
+OPENROUTER_API_KEY=
+# Optional: override the default model (default: openai/gpt-4.1-mini)
+# OPENROUTER_MODEL=openai/gpt-4.1-mini
+
 # Apple WeatherKit credentials
 WEATHERKIT_PRIVATE_KEY=
 WEATHERKIT_KEY_ID=

apps/aris-backend/package.json

@@ -10,11 +10,12 @@
 	},
 	"dependencies": {
 		"@aris/core": "workspace:*",
+		"@aris/source-caldav": "workspace:*",
+		"@aris/source-google-calendar": "workspace:*",
 		"@aris/source-location": "workspace:*",
 		"@aris/source-tfl": "workspace:*",
 		"@aris/source-weatherkit": "workspace:*",
-		"@hono/trpc-server": "^0.3",
-		"@trpc/server": "^11",
+		"@openrouter/sdk": "^0.9.11",
 		"arktype": "^2.1.29",
 		"better-auth": "^1",
 		"hono": "^4",

apps/aris-backend/src/auth/session-middleware.ts

@@ -1,13 +1,20 @@
-import type { Context, Next } from "hono"
+import type { Context, MiddlewareHandler, Next } from "hono"
+
+import type { AuthSession, AuthUser } from "./session.ts"
 
 import { auth } from "./index.ts"
 
-type SessionUser = typeof auth.$Infer.Session.user
-type Session = typeof auth.$Infer.Session.session
-
 export interface SessionVariables {
-	user: SessionUser | null
-	session: Session | null
+	user: AuthUser | null
+	session: AuthSession | null
+}
+
+export type AuthSessionEnv = { Variables: SessionVariables }
+
+export type AuthSessionMiddleware = MiddlewareHandler<AuthSessionEnv>
+
+declare module "hono" {
+	interface ContextVariableMap extends SessionVariables {}
 }
 
 /**
@@ -48,7 +55,22 @@ export async function requireSession(c: Context, next: Next): Promise<Response |
  */
 export async function getSessionFromHeaders(
 	headers: Headers,
-): Promise<{ user: SessionUser; session: Session } | null> {
+): Promise<{ user: AuthUser; session: AuthSession } | null> {
 	const session = await auth.api.getSession({ headers })
 	return session
 }
+
+/**
+ * Test-only middleware that injects a fake user and session.
+ * Pass userId to simulate an authenticated request, or omit to get 401.
+ */
+export function mockAuthSessionMiddleware(userId?: string): AuthSessionMiddleware {
+	return async (c: Context, next: Next): Promise<Response | void> => {
+		if (!userId) {
+			return c.json({ error: "Unauthorized" }, 401)
+		}
+		c.set("user", { id: userId } as AuthUser)
+		c.set("session", { id: "mock-session" } as AuthSession)
+		await next()
+	}
+}

apps/aris-backend/src/auth/session.ts

@@ -0,0 +1,4 @@
+import type { auth } from "./index.ts"
+
+export type AuthUser = typeof auth.$Infer.Session.user
+export type AuthSession = typeof auth.$Infer.Session.session

apps/aris-backend/src/enhancement/enhance-feed.ts

@@ -0,0 +1,51 @@
+import type { FeedItem } from "@aris/core"
+
+import type { LlmClient } from "./llm-client.ts"
+
+import { mergeEnhancement } from "./merge.ts"
+import { buildPrompt, hasUnfilledSlots } from "./prompt-builder.ts"
+
+/** Takes feed items, returns enhanced feed items. */
+export type FeedEnhancer = (items: FeedItem[]) => Promise<FeedItem[]>
+
+export interface FeedEnhancerConfig {
+	client: LlmClient
+	/** Defaults to Date.now — override for testing */
+	clock?: () => Date
+}
+
+/**
+ * Creates a FeedEnhancer that uses the provided LlmClient.
+ *
+ * Skips the LLM call when no items have unfilled slots.
+ * Returns items unchanged on LLM failure.
+ */
+export function createFeedEnhancer(config: FeedEnhancerConfig): FeedEnhancer {
+	const { client } = config
+	const clock = config.clock ?? (() => new Date())
+
+	return async function enhanceFeed(items) {
+		if (!hasUnfilledSlots(items)) {
+			return items
+		}
+
+		const currentTime = clock()
+		const { systemPrompt, userMessage } = buildPrompt(items, currentTime)
+
+		let result
+		try {
+			result = await client.enhance({ systemPrompt, userMessage })
+		} catch (err) {
+			console.error("[enhancement] LLM call failed:", err)
+			result = null
+		}
+
+		if (!result) {
+			return items
+		}
+
+		return mergeEnhancement(items, result, currentTime)
+	}
+}
+
+

apps/aris-backend/src/enhancement/llm-client.ts

@@ -0,0 +1,71 @@
+import { OpenRouter } from "@openrouter/sdk"
+
+import type { EnhancementResult } from "./schema.ts"
+
+import { enhancementResultJsonSchema, parseEnhancementResult } from "./schema.ts"
+
+const DEFAULT_MODEL = "openai/gpt-4.1-mini"
+const DEFAULT_TIMEOUT_MS = 30_000
+
+export interface LlmClientConfig {
+	apiKey: string
+	model?: string
+	timeoutMs?: number
+}
+
+export interface LlmClientRequest {
+	systemPrompt: string
+	userMessage: string
+}
+
+export interface LlmClient {
+	enhance(request: LlmClientRequest): Promise<EnhancementResult | null>
+}
+
+/**
+ * Creates a reusable LLM client backed by OpenRouter.
+ * The OpenRouter SDK instance is created once and reused across calls.
+ */
+export function createLlmClient(config: LlmClientConfig): LlmClient {
+	const client = new OpenRouter({
+		apiKey: config.apiKey,
+		timeoutMs: config.timeoutMs ?? DEFAULT_TIMEOUT_MS,
+	})
+	const model = config.model ?? DEFAULT_MODEL
+
+	return {
+		async enhance(request) {
+			const response = await client.chat.send({
+				chatGenerationParams: {
+					model,
+					messages: [
+						{ role: "system" as const, content: request.systemPrompt },
+						{ role: "user" as const, content: request.userMessage },
+					],
+					responseFormat: {
+						type: "json_schema" as const,
+						jsonSchema: {
+							name: "enhancement_result",
+							strict: true,
+							schema: enhancementResultJsonSchema,
+						},
+					},
+					stream: false,
+				},
+			})
+
+			const content = response.choices?.[0]?.message?.content
+			if (typeof content !== "string") {
+				console.warn("[enhancement] LLM returned no content in response")
+				return null
+			}
+
+			const result = parseEnhancementResult(content)
+			if (!result) {
+				console.warn("[enhancement] Failed to parse LLM response:", content)
+			}
+
+			return result
+		},
+	}
+}

apps/aris-backend/src/enhancement/merge.test.ts

@@ -0,0 +1,150 @@
+import type { FeedItem } from "@aris/core"
+
+import { describe, expect, test } from "bun:test"
+
+import type { EnhancementResult } from "./schema.ts"
+
+import { mergeEnhancement } from "./merge.ts"
+
+function makeItem(overrides: Partial<FeedItem> = {}): FeedItem {
+	return {
+		id: "item-1",
+		type: "test",
+		timestamp: new Date("2025-01-01T00:00:00Z"),
+		data: { value: 42 },
+		...overrides,
+	}
+}
+
+const now = new Date("2025-06-01T12:00:00Z")
+
+describe("mergeEnhancement", () => {
+	test("fills matching slots", () => {
+		const item = makeItem({
+			slots: {
+				insight: { description: "Weather insight", content: null },
+			},
+		})
+		const result: EnhancementResult = {
+			slotFills: {
+				"item-1": { insight: "Rain after 3pm" },
+			},
+			syntheticItems: [],
+		}
+
+		const merged = mergeEnhancement([item], result, now)
+
+		expect(merged).toHaveLength(1)
+		expect(merged[0]!.slots!.insight!.content).toBe("Rain after 3pm")
+		// Description preserved
+		expect(merged[0]!.slots!.insight!.description).toBe("Weather insight")
+	})
+
+	test("does not mutate original items", () => {
+		const item = makeItem({
+			slots: {
+				insight: { description: "test", content: null },
+			},
+		})
+		const result: EnhancementResult = {
+			slotFills: { "item-1": { insight: "filled" } },
+			syntheticItems: [],
+		}
+
+		mergeEnhancement([item], result, now)
+
+		expect(item.slots!.insight!.content).toBeNull()
+	})
+
+	test("ignores fills for non-existent items", () => {
+		const item = makeItem()
+		const result: EnhancementResult = {
+			slotFills: { "non-existent": { insight: "text" } },
+			syntheticItems: [],
+		}
+
+		const merged = mergeEnhancement([item], result, now)
+
+		expect(merged).toHaveLength(1)
+		expect(merged[0]!.id).toBe("item-1")
+	})
+
+	test("ignores fills for non-existent slots", () => {
+		const item = makeItem({
+			slots: {
+				insight: { description: "test", content: null },
+			},
+		})
+		const result: EnhancementResult = {
+			slotFills: { "item-1": { "non-existent-slot": "text" } },
+			syntheticItems: [],
+		}
+
+		const merged = mergeEnhancement([item], result, now)
+
+		expect(merged[0]!.slots!.insight!.content).toBeNull()
+	})
+
+	test("skips null fills", () => {
+		const item = makeItem({
+			slots: {
+				insight: { description: "test", content: null },
+			},
+		})
+		const result: EnhancementResult = {
+			slotFills: { "item-1": { insight: null } },
+			syntheticItems: [],
+		}
+
+		const merged = mergeEnhancement([item], result, now)
+
+		expect(merged[0]!.slots!.insight!.content).toBeNull()
+	})
+
+	test("passes through items without slots unchanged", () => {
+		const item = makeItem()
+		const result: EnhancementResult = {
+			slotFills: {},
+			syntheticItems: [],
+		}
+
+		const merged = mergeEnhancement([item], result, now)
+
+		expect(merged[0]).toBe(item)
+	})
+
+	test("appends synthetic items with backfilled fields", () => {
+		const item = makeItem()
+		const result: EnhancementResult = {
+			slotFills: {},
+			syntheticItems: [
+				{
+					id: "briefing-morning",
+					type: "briefing",
+					text: "Light afternoon ahead.",
+				},
+			],
+		}
+
+		const merged = mergeEnhancement([item], result, now)
+
+		expect(merged).toHaveLength(2)
+		expect(merged[1]!.id).toBe("briefing-morning")
+		expect(merged[1]!.type).toBe("briefing")
+		expect(merged[1]!.timestamp).toEqual(now)
+		expect(merged[1]!.data).toEqual({ text: "Light afternoon ahead." })
+	})
+
+	test("handles empty enhancement result", () => {
+		const item = makeItem()
+		const result: EnhancementResult = {
+			slotFills: {},
+			syntheticItems: [],
+		}
+
+		const merged = mergeEnhancement([item], result, now)
+
+		expect(merged).toHaveLength(1)
+		expect(merged[0]).toBe(item)
+	})
+})

apps/aris-backend/src/enhancement/merge.ts

@@ -0,0 +1,41 @@
+import type { FeedItem } from "@aris/core"
+
+import type { EnhancementResult } from "./schema.ts"
+
+/**
+ * Merges an EnhancementResult into feed items.
+ *
+ * - Writes slot content from slotFills into matching items
+ * - Appends synthetic items to the list
+ * - Returns a new array (no mutation)
+ * - Ignores fills for items/slots that don't exist
+ */
+export function mergeEnhancement(items: FeedItem[], result: EnhancementResult, currentTime: Date): FeedItem[] {
+	const merged = items.map((item) => {
+		const fills = result.slotFills[item.id]
+		if (!fills || !item.slots) return item
+
+		const mergedSlots = { ...item.slots }
+		let changed = false
+
+		for (const [slotName, content] of Object.entries(fills)) {
+			if (slotName in mergedSlots && content !== null) {
+				mergedSlots[slotName] = { ...mergedSlots[slotName]!, content }
+				changed = true
+			}
+		}
+
+		return changed ? { ...item, slots: mergedSlots } : item
+	})
+
+	for (const synthetic of result.syntheticItems) {
+		merged.push({
+			id: synthetic.id,
+			type: synthetic.type,
+			timestamp: currentTime,
+			data: { text: synthetic.text },
+		})
+	}
+
+	return merged
+}

apps/aris-backend/src/enhancement/prompt-builder.test.ts

@@ -0,0 +1,167 @@
+import type { FeedItem } from "@aris/core"
+
+import { describe, expect, test } from "bun:test"
+
+import { buildPrompt, hasUnfilledSlots } from "./prompt-builder.ts"
+
+function makeItem(overrides: Partial<FeedItem> = {}): FeedItem {
+	return {
+		id: "item-1",
+		type: "test",
+		timestamp: new Date("2025-01-01T00:00:00Z"),
+		data: { value: 42 },
+		...overrides,
+	}
+}
+
+function parseUserMessage(userMessage: string): Record<string, unknown> {
+	return JSON.parse(userMessage)
+}
+
+describe("hasUnfilledSlots", () => {
+	test("returns false for items without slots", () => {
+		expect(hasUnfilledSlots([makeItem()])).toBe(false)
+	})
+
+	test("returns false for items with all slots filled", () => {
+		const item = makeItem({
+			slots: {
+				insight: { description: "test", content: "filled" },
+			},
+		})
+		expect(hasUnfilledSlots([item])).toBe(false)
+	})
+
+	test("returns true when at least one slot is unfilled", () => {
+		const item = makeItem({
+			slots: {
+				insight: { description: "test", content: null },
+			},
+		})
+		expect(hasUnfilledSlots([item])).toBe(true)
+	})
+
+	test("returns false for empty array", () => {
+		expect(hasUnfilledSlots([])).toBe(false)
+	})
+})
+
+describe("buildPrompt", () => {
+	test("puts items with unfilled slots in items", () => {
+		const item = makeItem({
+			slots: {
+				insight: { description: "Weather insight", content: null },
+				filled: { description: "Already done", content: "done" },
+			},
+		})
+
+		const { userMessage } = buildPrompt([item], new Date("2025-06-01T12:00:00Z"))
+		const parsed = parseUserMessage(userMessage)
+
+		expect(parsed.items).toHaveLength(1)
+		expect((parsed.items as Array<Record<string, unknown>>)[0]!.id).toBe("item-1")
+		expect((parsed.items as Array<Record<string, unknown>>)[0]!.slots).toEqual({ insight: "Weather insight" })
+		expect((parsed.items as Array<Record<string, unknown>>)[0]!.type).toBeUndefined()
+		expect(parsed.context).toHaveLength(0)
+	})
+
+	test("puts slotless items in context", () => {
+		const withSlots = makeItem({
+			id: "with-slots",
+			slots: { insight: { description: "test", content: null } },
+		})
+		const withoutSlots = makeItem({ id: "no-slots" })
+
+		const { userMessage } = buildPrompt([withSlots, withoutSlots], new Date("2025-06-01T12:00:00Z"))
+		const parsed = parseUserMessage(userMessage)
+
+		expect(parsed.items).toHaveLength(1)
+		expect((parsed.items as Array<Record<string, unknown>>)[0]!.id).toBe("with-slots")
+		expect(parsed.context).toHaveLength(1)
+		expect((parsed.context as Array<Record<string, unknown>>)[0]!.id).toBe("no-slots")
+	})
+
+	test("includes time in ISO format", () => {
+		const { userMessage } = buildPrompt([], new Date("2025-06-01T12:00:00Z"))
+		const parsed = parseUserMessage(userMessage)
+
+		expect(parsed.time).toBe("2025-06-01T12:00:00.000Z")
+	})
+
+	test("system prompt is non-empty", () => {
+		const { systemPrompt } = buildPrompt([], new Date())
+		expect(systemPrompt.length).toBeGreaterThan(0)
+	})
+
+	test("includes schedule in system prompt", () => {
+		const calEvent = makeItem({
+			id: "cal-1",
+			type: "caldav-event",
+			data: {
+				title: "Team standup",
+				startDate: "2025-06-01T10:00:00Z",
+				endDate: "2025-06-01T10:30:00Z",
+				isAllDay: false,
+				location: null,
+			},
+			slots: {
+				insight: { description: "test", content: null },
+			},
+		})
+
+		const { systemPrompt } = buildPrompt([calEvent], new Date("2025-06-01T12:00:00Z"))
+
+		expect(systemPrompt).toContain("Schedule:\n")
+		expect(systemPrompt).toContain("Team standup")
+		expect(systemPrompt).toContain("10:00")
+	})
+
+	test("includes location in schedule", () => {
+		const calEvent = makeItem({
+			id: "cal-1",
+			type: "caldav-event",
+			data: {
+				title: "Therapy",
+				startDate: "2025-06-02T18:00:00Z",
+				endDate: "2025-06-02T19:00:00Z",
+				isAllDay: false,
+				location: "92 Tooley Street, London",
+			},
+		})
+
+		const { systemPrompt } = buildPrompt([calEvent], new Date("2025-06-01T12:00:00Z"))
+
+		expect(systemPrompt).toContain("Therapy @ 92 Tooley Street, London")
+	})
+
+	test("includes week calendar but omits schedule when no calendar items", () => {
+		const weatherItem = makeItem({
+			type: "weather-current",
+			data: { temperature: 14 },
+		})
+
+		const { systemPrompt } = buildPrompt([weatherItem], new Date("2025-06-01T12:00:00Z"))
+
+		expect(systemPrompt).toContain("Week:")
+		expect(systemPrompt).not.toContain("Schedule:")
+	})
+
+	test("user message is pure JSON", () => {
+		const calEvent = makeItem({
+			id: "cal-1",
+			type: "caldav-event",
+			data: {
+				title: "Budget Review",
+				startTime: "2025-06-01T14:00:00Z",
+				endTime: "2025-06-01T15:00:00Z",
+				isAllDay: false,
+				location: "https://meet.google.com/abc",
+			},
+		})
+
+		const { userMessage } = buildPrompt([calEvent], new Date("2025-06-01T12:00:00Z"))
+
+		expect(userMessage.startsWith("{")).toBe(true)
+		expect(() => JSON.parse(userMessage)).not.toThrow()
+	})
+})

apps/aris-backend/src/enhancement/prompt-builder.ts

@@ -0,0 +1,218 @@
+import type { FeedItem } from "@aris/core"
+
+import { CalDavFeedItemType } from "@aris/source-caldav"
+import { CalendarFeedItemType } from "@aris/source-google-calendar"
+
+import systemPromptBase from "./prompts/system.txt"
+
+const CALENDAR_ITEM_TYPES = new Set<string>([
+	CalDavFeedItemType.Event,
+	CalendarFeedItemType.Event,
+	CalendarFeedItemType.AllDay,
+])
+
+/**
+ * Builds the system prompt and user message for the enhancement harness.
+ *
+ * Includes a pre-computed mini calendar so the LLM doesn't have to
+ * parse timestamps to understand the user's schedule.
+ */
+export function buildPrompt(
+	items: FeedItem[],
+	currentTime: Date,
+): { systemPrompt: string; userMessage: string } {
+	const schedule = buildSchedule(items, currentTime)
+
+	const enhanceItems: Array<{
+		id: string
+		data: Record<string, unknown>
+		slots: Record<string, string>
+	}> = []
+	const contextItems: Array<{
+		id: string
+		type: string
+		data: Record<string, unknown>
+	}> = []
+
+	for (const item of items) {
+		const hasUnfilledSlots =
+			item.slots &&
+			Object.values(item.slots).some((slot) => slot.content === null)
+
+		if (hasUnfilledSlots) {
+			enhanceItems.push({
+				id: item.id,
+				data: item.data,
+				slots: Object.fromEntries(
+					Object.entries(item.slots!)
+						.filter(([, slot]) => slot.content === null)
+						.map(([name, slot]) => [name, slot.description]),
+				),
+			})
+		} else {
+			contextItems.push({
+				id: item.id,
+				type: item.type,
+				data: item.data,
+			})
+		}
+	}
+
+	const userMessage = JSON.stringify({
+		time: currentTime.toISOString(),
+		items: enhanceItems,
+		context: contextItems,
+	})
+
+	const weekCalendar = buildWeekCalendar(currentTime)
+	let systemPrompt = systemPromptBase
+	systemPrompt += `\n\nWeek:\n${weekCalendar}`
+	if (schedule) {
+		systemPrompt += `\n\nSchedule:\n${schedule}`
+	}
+
+	return { systemPrompt, userMessage }
+}
+
+/**
+ * Returns true if any item has at least one unfilled slot.
+ */
+export function hasUnfilledSlots(items: FeedItem[]): boolean {
+	return items.some(
+		(item) =>
+			item.slots &&
+			Object.values(item.slots).some((slot) => slot.content === null),
+	)
+}
+
+// -- Helpers --
+
+interface CalendarEntry {
+	date: Date
+	title: string
+	location: string | null
+	isAllDay: boolean
+	startTime: Date
+	endTime: Date
+}
+
+function toValidDate(value: unknown): Date | null {
+	if (value instanceof Date) return Number.isNaN(value.getTime()) ? null : value
+	if (typeof value === "string" || typeof value === "number") {
+		const date = new Date(value)
+		return Number.isNaN(date.getTime()) ? null : date
+	}
+	return null
+}
+
+function extractCalendarEntry(item: FeedItem): CalendarEntry | null {
+	if (!CALENDAR_ITEM_TYPES.has(item.type)) return null
+
+	const d = item.data
+	const title = d.title
+	if (typeof title !== "string" || !title) return null
+
+	// CalDAV uses startDate/endDate, Google Calendar uses startTime/endTime
+	const startTime = toValidDate(d.startDate ?? d.startTime)
+	if (!startTime) return null
+
+	const endTime = toValidDate(d.endDate ?? d.endTime) ?? startTime
+
+	return {
+		date: startTime,
+		title,
+		location: typeof d.location === "string" ? d.location : null,
+		isAllDay: typeof d.isAllDay === "boolean" ? d.isAllDay : false,
+		startTime,
+		endTime,
+	}
+}
+
+const DAYS = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"] as const
+const MONTHS = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"] as const
+
+function pad2(n: number): string {
+	return n.toString().padStart(2, "0")
+}
+
+function formatTime(date: Date): string {
+	return `${pad2(date.getUTCHours())}:${pad2(date.getUTCMinutes())}`
+}
+
+function formatDayShort(date: Date): string {
+	return `${DAYS[date.getUTCDay()]}, ${date.getUTCDate()} ${MONTHS[date.getUTCMonth()]}`
+}
+
+function formatDayLabel(date: Date, currentTime: Date): string {
+	const currentDay = Date.UTC(currentTime.getUTCFullYear(), currentTime.getUTCMonth(), currentTime.getUTCDate())
+	const targetDay = Date.UTC(date.getUTCFullYear(), date.getUTCMonth(), date.getUTCDate())
+	const diffDays = Math.round((targetDay - currentDay) / (1000 * 60 * 60 * 24))
+
+	const dayName = formatDayShort(date)
+
+	if (diffDays === 0) return `Today: ${dayName}`
+	if (diffDays === 1) return `Tomorrow: ${dayName}`
+	return dayName
+}
+
+/**
+ * Builds a week overview mapping day names to dates,
+ * so the LLM can easily match ISO timestamps to days.
+ */
+function buildWeekCalendar(currentTime: Date): string {
+	const lines: string[] = []
+	for (let i = 0; i < 7; i++) {
+		const date = new Date(currentTime)
+		date.setUTCDate(date.getUTCDate() + i)
+		const label = i === 0 ? "Today" : i === 1 ? "Tomorrow" : ""
+		const dayStr = formatDayShort(date)
+		const iso = date.toISOString().slice(0, 10)
+		const prefix = label ? `${label}: ` : ""
+		lines.push(`${prefix}${dayStr} = ${iso}`)
+	}
+	return lines.join("\n")
+}
+
+/**
+ * Builds a compact text calendar from all calendar-type items.
+ * Groups events by day relative to currentTime.
+ */
+function buildSchedule(items: FeedItem[], currentTime: Date): string {
+	const entries: CalendarEntry[] = []
+	for (const item of items) {
+		const entry = extractCalendarEntry(item)
+		if (entry) entries.push(entry)
+	}
+
+	if (entries.length === 0) return ""
+
+	entries.sort((a, b) => a.startTime.getTime() - b.startTime.getTime())
+
+	const byDay = new Map<string, CalendarEntry[]>()
+	for (const entry of entries) {
+		const key = entry.date.toISOString().slice(0, 10)
+		const group = byDay.get(key)
+		if (group) {
+			group.push(entry)
+		} else {
+			byDay.set(key, [entry])
+		}
+	}
+
+	const lines: string[] = []
+	for (const [, dayEntries] of byDay) {
+		lines.push(formatDayLabel(dayEntries[0]!.startTime, currentTime))
+		for (const entry of dayEntries) {
+			if (entry.isAllDay) {
+				const loc = entry.location ? ` @ ${entry.location}` : ""
+				lines.push(`  all day  ${entry.title}${loc}`)
+			} else {
+				const timeRange = `${formatTime(entry.startTime)}–${formatTime(entry.endTime)}`
+				const loc = entry.location ? ` @ ${entry.location}` : ""
+				lines.push(`  ${timeRange}  ${entry.title}${loc}`)
+			}
+		}
+	}
+
+	return lines.join("\n")
+}

apps/aris-backend/src/enhancement/prompts/system.txt

@@ -0,0 +1,21 @@
+You are ARIS, a personal assistant. You enhance a user's feed by filling slots and optionally generating synthetic items.
+
+The user message is a JSON object with:
+- "items": feed items with data and named slots to fill. Each slot has a description of what to write.
+- "context": other feed items (no slots) for cross-source reasoning.
+- "time": current ISO timestamp.
+
+Your output has two fields:
+- "slotFills": map of item ID → slot name → short text (or null if you can't fill it or cannot provide answer). Each item ID appears ONCE with ALL its slots in a single object.
+- "syntheticItems": array of { id, type, text } for new items (briefings, nudges, insights). Only when genuinely useful and when not redundant.
+
+Rules:
+- DO NOT USE EMDASH OR DASH OR ATTEMPT TO USE SYMBOLS TO CIRCUMVENT THIS RULE.
+- One sentence per slot. Two max if absolutely necessary. Be direct.
+- Say "I" not "we."
+- Hedge when inferring. Don't state guesses as facts.
+- Use the week and schedule below to understand when events happen. Match weather data to the correct date.
+- Look for connections across items.
+- Don't pad — return null for slots you can't meaningfully fill, and skip synthetic items if there's nothing useful to add.
+- Never fabricate information not present in the feed. If you don't have data to support a fill, return null.
+- Read each slot's description carefully — it defines when to return null.

apps/aris-backend/src/enhancement/schema.test.ts

@@ -0,0 +1,176 @@
+import { describe, expect, test } from "bun:test"
+
+import {
+	emptyEnhancementResult,
+	enhancementResultJsonSchema,
+	parseEnhancementResult,
+} from "./schema.ts"
+
+describe("parseEnhancementResult", () => {
+	test("parses valid result", () => {
+		const input = JSON.stringify({
+			slotFills: {
+				"weather-1": {
+					insight: "Rain after 3pm",
+					"cross-source": null,
+				},
+			},
+			syntheticItems: [
+				{
+					id: "briefing-morning",
+					type: "briefing",
+					text: "Light afternoon ahead.",
+				},
+			],
+		})
+
+		const result = parseEnhancementResult(input)
+
+		expect(result).not.toBeNull()
+		expect(result!.slotFills["weather-1"]!.insight).toBe("Rain after 3pm")
+		expect(result!.slotFills["weather-1"]!["cross-source"]).toBeNull()
+		expect(result!.syntheticItems).toHaveLength(1)
+		expect(result!.syntheticItems[0]!.id).toBe("briefing-morning")
+		expect(result!.syntheticItems[0]!.text).toBe("Light afternoon ahead.")
+	})
+
+	test("parses empty result", () => {
+		const input = JSON.stringify({
+			slotFills: {},
+			syntheticItems: [],
+		})
+
+		const result = parseEnhancementResult(input)
+
+		expect(result).not.toBeNull()
+		expect(Object.keys(result!.slotFills)).toHaveLength(0)
+		expect(result!.syntheticItems).toHaveLength(0)
+	})
+
+	test("returns null for invalid JSON", () => {
+		expect(parseEnhancementResult("not json")).toBeNull()
+	})
+
+	test("returns null for non-object", () => {
+		expect(parseEnhancementResult('"hello"')).toBeNull()
+		expect(parseEnhancementResult("42")).toBeNull()
+		expect(parseEnhancementResult("null")).toBeNull()
+	})
+
+	test("returns null when slotFills is missing", () => {
+		const input = JSON.stringify({ syntheticItems: [] })
+		expect(parseEnhancementResult(input)).toBeNull()
+	})
+
+	test("returns null when syntheticItems is missing", () => {
+		const input = JSON.stringify({ slotFills: {} })
+		expect(parseEnhancementResult(input)).toBeNull()
+	})
+
+	test("returns null when slotFills has non-string values", () => {
+		const input = JSON.stringify({
+			slotFills: { "item-1": { slot: 42 } },
+			syntheticItems: [],
+		})
+		expect(parseEnhancementResult(input)).toBeNull()
+	})
+
+	test("returns null when syntheticItem is missing required fields", () => {
+		const input = JSON.stringify({
+			slotFills: {},
+			syntheticItems: [{ id: "x" }],
+		})
+		expect(parseEnhancementResult(input)).toBeNull()
+	})
+})
+
+describe("emptyEnhancementResult", () => {
+	test("returns empty slotFills and syntheticItems", () => {
+		const result = emptyEnhancementResult()
+		expect(result.slotFills).toEqual({})
+		expect(result.syntheticItems).toEqual([])
+	})
+})
+
+describe("schema sync", () => {
+	const referencePayloads = [
+		{
+			name: "full payload with null slot fill",
+			payload: {
+				slotFills: {
+					"weather-1": { insight: "Rain after 3pm", crossSource: null },
+					"cal-2": { summary: "Busy morning" },
+				},
+				syntheticItems: [
+					{ id: "briefing-morning", type: "briefing", text: "Light day ahead." },
+					{ id: "nudge-umbrella", type: "nudge", text: "Bring an umbrella." },
+				],
+			},
+		},
+		{
+			name: "empty collections",
+			payload: { slotFills: {}, syntheticItems: [] },
+		},
+		{
+			name: "slot fills only",
+			payload: {
+				slotFills: { "item-1": { slot: "filled" } },
+				syntheticItems: [],
+			},
+		},
+		{
+			name: "synthetic items only",
+			payload: {
+				slotFills: {},
+				syntheticItems: [{ id: "insight-1", type: "insight", text: "Something." }],
+			},
+		},
+	]
+
+	for (const { name, payload } of referencePayloads) {
+		test(`arktype and JSON Schema agree on: ${name}`, () => {
+			// arktype accepts it
+			const parsed = parseEnhancementResult(JSON.stringify(payload))
+			expect(parsed).not.toBeNull()
+
+			// JSON Schema structure matches
+			const jsonSchema = enhancementResultJsonSchema
+			expect(Object.keys(jsonSchema.properties).sort()).toEqual(
+				Object.keys(payload).sort(),
+			)
+			expect([...jsonSchema.required].sort()).toEqual(Object.keys(payload).sort())
+
+			// syntheticItems item schema has the right required fields
+			const itemSchema = jsonSchema.properties.syntheticItems.items
+			expect([...itemSchema.required].sort()).toEqual(["id", "text", "type"])
+
+			// Verify each synthetic item has exactly the fields the JSON Schema expects
+			for (const item of payload.syntheticItems) {
+				expect(Object.keys(item).sort()).toEqual([...itemSchema.required].sort())
+			}
+		})
+	}
+
+	test("JSON Schema rejects what arktype rejects: missing required field", () => {
+		// Missing syntheticItems
+		expect(parseEnhancementResult(JSON.stringify({ slotFills: {} }))).toBeNull()
+
+		// JSON Schema also requires it
+		expect(enhancementResultJsonSchema.required).toContain("syntheticItems")
+	})
+
+	test("JSON Schema rejects what arktype rejects: wrong slot fill value type", () => {
+		const bad = { slotFills: { "item-1": { slot: 42 } }, syntheticItems: [] }
+
+		// arktype rejects it
+		expect(parseEnhancementResult(JSON.stringify(bad))).toBeNull()
+
+		// JSON Schema only allows string or null for slot values
+		const slotValueTypes =
+			enhancementResultJsonSchema.properties.slotFills.additionalProperties
+				.additionalProperties.type
+		expect(slotValueTypes).toContain("string")
+		expect(slotValueTypes).toContain("null")
+		expect(slotValueTypes).not.toContain("number")
+	})
+})

apps/aris-backend/src/enhancement/schema.ts

@@ -0,0 +1,89 @@
+import { type } from "arktype"
+
+const SyntheticItem = type({
+	id: "string",
+	type: "string",
+	text: "string",
+})
+
+const EnhancementResult = type({
+	slotFills: "Record<string, Record<string, string | null>>",
+	syntheticItems: SyntheticItem.array(),
+})
+
+export type SyntheticItem = typeof SyntheticItem.infer
+export type EnhancementResult = typeof EnhancementResult.infer
+
+/**
+ * JSON Schema passed to OpenRouter's structured output.
+ * OpenRouter doesn't support arktype, so this is maintained separately.
+ *
+ * ⚠️  Must stay in sync with EnhancementResult above.
+ * If you add/remove fields, update both schemas.
+ */
+export const enhancementResultJsonSchema = {
+	type: "object",
+	properties: {
+		slotFills: {
+			type: "object",
+			description:
+				"Map of feed item ID to an object of slot name to filled text content. Use null for slots that cannot be meaningfully filled.",
+			additionalProperties: {
+				type: "object",
+				additionalProperties: {
+					type: ["string", "null"],
+				},
+			},
+		},
+		syntheticItems: {
+			type: "array",
+			description:
+				"New feed items to inject (briefings, nudges, cross-source insights). Keep these short and actionable.",
+			items: {
+				type: "object",
+				properties: {
+					id: {
+						type: "string",
+						description: "Unique ID, e.g. 'briefing-morning'",
+					},
+					type: {
+						type: "string",
+						description: "One of: 'briefing', 'nudge', 'insight'",
+					},
+					text: {
+						type: "string",
+						description: "Display text, 1-3 sentences",
+					},
+				},
+				required: ["id", "type", "text"],
+				additionalProperties: false,
+			},
+		},
+	},
+	required: ["slotFills", "syntheticItems"],
+	additionalProperties: false,
+} as const
+
+/**
+ * Parses a JSON string into an EnhancementResult.
+ * Returns null if the input is malformed.
+ */
+export function parseEnhancementResult(json: string): EnhancementResult | null {
+	let parsed: unknown
+	try {
+		parsed = JSON.parse(json)
+	} catch {
+		return null
+	}
+
+	const result = EnhancementResult(parsed)
+	if (result instanceof type.errors) {
+		return null
+	}
+
+	return result
+}
+
+export function emptyEnhancementResult(): EnhancementResult {
+	return { slotFills: {}, syntheticItems: [] }
+}

apps/aris-backend/src/feed/http.test.ts

@@ -0,0 +1,144 @@
+import type { ActionDefinition, ContextEntry, FeedItem, FeedSource } from "@aris/core"
+
+import { describe, expect, test } from "bun:test"
+import { Hono } from "hono"
+
+import { mockAuthSessionMiddleware } from "../auth/session-middleware.ts"
+import { UserSessionManager } from "../session/index.ts"
+import { registerFeedHttpHandlers } from "./http.ts"
+
+interface FeedResponse {
+	items: Array<{
+		id: string
+		type: string
+		priority: number
+		timestamp: string
+		data: Record<string, unknown>
+	}>
+	errors: Array<{ sourceId: string; error: string }>
+}
+
+function createStubSource(id: string, items: FeedItem[] = []): FeedSource {
+	return {
+		id,
+		async listActions(): Promise<Record<string, ActionDefinition>> {
+			return {}
+		},
+		async executeAction(): Promise<unknown> {
+			return undefined
+		},
+		async fetchContext(): Promise<readonly ContextEntry[] | null> {
+			return null
+		},
+		async fetchItems() {
+			return items
+		},
+	}
+}
+
+function buildTestApp(sessionManager: UserSessionManager, userId?: string) {
+	const app = new Hono()
+	registerFeedHttpHandlers(app, {
+		sessionManager,
+		authSessionMiddleware: mockAuthSessionMiddleware(userId),
+	})
+	return app
+}
+
+describe("GET /api/feed", () => {
+	test("returns 401 without auth", async () => {
+		const manager = new UserSessionManager({ providers: [] })
+		const app = buildTestApp(manager)
+
+		const res = await app.request("/api/feed")
+
+		expect(res.status).toBe(401)
+	})
+
+	test("returns cached feed when available", async () => {
+		const items: FeedItem[] = [
+			{
+				id: "item-1",
+				type: "test",
+				priority: 0.8,
+				timestamp: new Date("2025-01-01T00:00:00.000Z"),
+				data: { value: 42 },
+			},
+		]
+		const manager = new UserSessionManager({
+			providers: [() => createStubSource("test", items)],
+		})
+		const app = buildTestApp(manager, "user-1")
+
+		// Prime the cache
+		const session = manager.getOrCreate("user-1")
+		await session.engine.refresh()
+		expect(session.engine.lastFeed()).not.toBeNull()
+
+		const res = await app.request("/api/feed")
+
+		expect(res.status).toBe(200)
+		const body = (await res.json()) as FeedResponse
+		expect(body.items).toHaveLength(1)
+		expect(body.items[0]!.id).toBe("item-1")
+		expect(body.items[0]!.type).toBe("test")
+		expect(body.items[0]!.priority).toBe(0.8)
+		expect(body.items[0]!.timestamp).toBe("2025-01-01T00:00:00.000Z")
+		expect(body.errors).toHaveLength(0)
+	})
+
+	test("forces refresh when no cached feed", async () => {
+		const items: FeedItem[] = [
+			{
+				id: "fresh-1",
+				type: "test",
+				priority: 0.5,
+				timestamp: new Date("2025-06-01T12:00:00.000Z"),
+				data: { fresh: true },
+			},
+		]
+		const manager = new UserSessionManager({
+			providers: [() => createStubSource("test", items)],
+		})
+		const app = buildTestApp(manager, "user-1")
+
+		// No prior refresh — lastFeed() returns null, handler should call refresh()
+		const res = await app.request("/api/feed")
+
+		expect(res.status).toBe(200)
+		const body = (await res.json()) as FeedResponse
+		expect(body.items).toHaveLength(1)
+		expect(body.items[0]!.id).toBe("fresh-1")
+		expect(body.items[0]!.data.fresh).toBe(true)
+		expect(body.errors).toHaveLength(0)
+	})
+
+	test("serializes source errors as message strings", async () => {
+		const failingSource: FeedSource = {
+			id: "failing",
+			async listActions() {
+				return {}
+			},
+			async executeAction() {
+				return undefined
+			},
+			async fetchContext() {
+				return null
+			},
+			async fetchItems() {
+				throw new Error("connection timeout")
+			},
+		}
+		const manager = new UserSessionManager({ providers: [() => failingSource] })
+		const app = buildTestApp(manager, "user-1")
+
+		const res = await app.request("/api/feed")
+
+		expect(res.status).toBe(200)
+		const body = (await res.json()) as FeedResponse
+		expect(body.items).toHaveLength(0)
+		expect(body.errors).toHaveLength(1)
+		expect(body.errors[0]!.sourceId).toBe("failing")
+		expect(body.errors[0]!.error).toBe("connection timeout")
+	})
+})

apps/aris-backend/src/feed/http.ts

@@ -0,0 +1,45 @@
+import type { Context, Hono } from "hono"
+
+import { createMiddleware } from "hono/factory"
+
+import type { AuthSessionMiddleware } from "../auth/session-middleware.ts"
+import type { UserSessionManager } from "../session/index.ts"
+
+type Env = {
+	Variables: {
+		sessionManager: UserSessionManager
+	}
+}
+
+interface FeedHttpHandlersDeps {
+	sessionManager: UserSessionManager
+	authSessionMiddleware: AuthSessionMiddleware
+}
+
+export function registerFeedHttpHandlers(
+	app: Hono,
+	{ sessionManager, authSessionMiddleware }: FeedHttpHandlersDeps,
+) {
+	const inject = createMiddleware<Env>(async (c, next) => {
+		c.set("sessionManager", sessionManager)
+		await next()
+	})
+
+	app.get("/api/feed", inject, authSessionMiddleware, handleGetFeed)
+}
+
+async function handleGetFeed(c: Context<Env>) {
+	const user = c.get("user")!
+	const sessionManager = c.get("sessionManager")
+	const session = sessionManager.getOrCreate(user.id)
+
+	const feed = await session.feed()
+
+	return c.json({
+		items: feed.items,
+		errors: feed.errors.map((e) => ({
+			sourceId: e.sourceId,
+			error: e.error.message,
+		})),
+	})
+}

apps/aris-backend/src/location/http.ts

@@ -0,0 +1,56 @@
+import type { Context, Hono } from "hono"
+
+import { type } from "arktype"
+import { createMiddleware } from "hono/factory"
+
+import type { UserSessionManager } from "../session/index.ts"
+
+import { requireSession } from "../auth/session-middleware.ts"
+
+type Env = { Variables: { sessionManager: UserSessionManager } }
+
+const locationInput = type({
+	lat: "number",
+	lng: "number",
+	accuracy: "number",
+	timestamp: "string.date.iso",
+})
+
+export function registerLocationHttpHandlers(
+	app: Hono,
+	{ sessionManager }: { sessionManager: UserSessionManager },
+) {
+	const inject = createMiddleware<Env>(async (c, next) => {
+		c.set("sessionManager", sessionManager)
+		await next()
+	})
+
+	app.post("/api/location", inject, requireSession, handleUpdateLocation)
+}
+
+async function handleUpdateLocation(c: Context<Env>) {
+	let body: unknown
+	try {
+		body = await c.req.json()
+	} catch {
+		return c.json({ error: "Invalid JSON" }, 400)
+	}
+
+	const result = locationInput(body)
+
+	if (result instanceof type.errors) {
+		return c.json({ error: result.summary }, 400)
+	}
+
+	const user = c.get("user")!
+	const sessionManager = c.get("sessionManager")
+	const session = sessionManager.getOrCreate(user.id)
+	await session.engine.executeAction("aris.location", "update-location", {
+		lat: result.lat,
+		lng: result.lng,
+		accuracy: result.accuracy,
+		timestamp: new Date(result.timestamp),
+	})
+
+	return c.body(null, 204)
+}

apps/aris-backend/src/location/router.ts

@@ -1,28 +0,0 @@
-import { type } from "arktype"
-
-import type { UserSessionManager } from "../session/index.ts"
-import type { TRPC } from "../trpc/router.ts"
-
-const locationInput = type({
-	lat: "number",
-	lng: "number",
-	accuracy: "number",
-	timestamp: "Date",
-})
-
-export function createLocationRouter(
-	t: TRPC,
-	{ sessionManager }: { sessionManager: UserSessionManager },
-) {
-	return t.router({
-		update: t.procedure.input(locationInput).mutation(async ({ input, ctx }) => {
-			const session = sessionManager.getOrCreate(ctx.user.id)
-			await session.engine.executeAction("aris.location", "update-location", {
-				lat: input.lat,
-				lng: input.lng,
-				accuracy: input.accuracy,
-				timestamp: input.timestamp,
-			})
-		}),
-	})
-}

apps/aris-backend/src/server.ts

@@ -1,41 +1,54 @@
 import { LocationSource } from "@aris/source-location"
-import { trpcServer } from "@hono/trpc-server"
 import { Hono } from "hono"
 
 import { registerAuthHandlers } from "./auth/http.ts"
+import { requireSession } from "./auth/session-middleware.ts"
+import { createFeedEnhancer } from "./enhancement/enhance-feed.ts"
+import { createLlmClient } from "./enhancement/llm-client.ts"
+import { registerFeedHttpHandlers } from "./feed/http.ts"
+import { registerLocationHttpHandlers } from "./location/http.ts"
 import { UserSessionManager } from "./session/index.ts"
 import { WeatherSourceProvider } from "./weather/provider.ts"
-import { createContext } from "./trpc/context.ts"
-import { createTRPCRouter } from "./trpc/router.ts"
 
 function main() {
-	const sessionManager = new UserSessionManager([
-		() => new LocationSource(),
-		new WeatherSourceProvider({
-			credentials: {
-				privateKey: process.env.WEATHERKIT_PRIVATE_KEY!,
-				keyId: process.env.WEATHERKIT_KEY_ID!,
-				teamId: process.env.WEATHERKIT_TEAM_ID!,
-				serviceId: process.env.WEATHERKIT_SERVICE_ID!,
-			},
-		}),
-	])
+	const openrouterApiKey = process.env.OPENROUTER_API_KEY
+	const feedEnhancer = openrouterApiKey
+		? createFeedEnhancer({
+				client: createLlmClient({
+					apiKey: openrouterApiKey,
+					model: process.env.OPENROUTER_MODEL || undefined,
+				}),
+			})
+		: null
+	if (!feedEnhancer) {
+		console.warn("[enhancement] OPENROUTER_API_KEY not set — feed enhancement disabled")
+	}
 
-	const trpcRouter = createTRPCRouter({ sessionManager })
+	const sessionManager = new UserSessionManager({
+		providers: [
+			() => new LocationSource(),
+			new WeatherSourceProvider({
+				credentials: {
+					privateKey: process.env.WEATHERKIT_PRIVATE_KEY!,
+					keyId: process.env.WEATHERKIT_KEY_ID!,
+					teamId: process.env.WEATHERKIT_TEAM_ID!,
+					serviceId: process.env.WEATHERKIT_SERVICE_ID!,
+				},
+			}),
+		],
+		feedEnhancer,
+	})
 
 	const app = new Hono()
 
 	app.get("/health", (c) => c.json({ status: "ok" }))
 
 	registerAuthHandlers(app)
-
-	app.use(
-		"/trpc/*",
-		trpcServer({
-			router: trpcRouter,
-			createContext,
-		}),
-	)
+	registerFeedHttpHandlers(app, {
+		sessionManager,
+		authSessionMiddleware: requireSession,
+	})
+	registerLocationHttpHandlers(app, { sessionManager })
 
 	return app
 }

apps/aris-backend/src/session/user-session-manager.test.ts

@@ -1,18 +1,18 @@
+import type { WeatherKitClient, WeatherKitResponse } from "@aris/source-weatherkit"
+
 import { LocationSource } from "@aris/source-location"
 import { describe, expect, mock, test } from "bun:test"
 
 import { WeatherSourceProvider } from "../weather/provider.ts"
 import { UserSessionManager } from "./user-session-manager.ts"
 
-import type { WeatherKitClient, WeatherKitResponse } from "@aris/source-weatherkit"
-
 const mockWeatherClient: WeatherKitClient = {
 	fetch: async () => ({}) as WeatherKitResponse,
 }
 
 describe("UserSessionManager", () => {
 	test("getOrCreate creates session on first call", () => {
-		const manager = new UserSessionManager([() => new LocationSource()])
+		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
 
 		const session = manager.getOrCreate("user-1")
 
@@ -21,7 +21,7 @@ describe("UserSessionManager", () => {
 	})
 
 	test("getOrCreate returns same session for same user", () => {
-		const manager = new UserSessionManager([() => new LocationSource()])
+		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
 
 		const session1 = manager.getOrCreate("user-1")
 		const session2 = manager.getOrCreate("user-1")
@@ -30,7 +30,7 @@ describe("UserSessionManager", () => {
 	})
 
 	test("getOrCreate returns different sessions for different users", () => {
-		const manager = new UserSessionManager([() => new LocationSource()])
+		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
 
 		const session1 = manager.getOrCreate("user-1")
 		const session2 = manager.getOrCreate("user-2")
@@ -39,7 +39,7 @@ describe("UserSessionManager", () => {
 	})
 
 	test("each user gets independent source instances", () => {
-		const manager = new UserSessionManager([() => new LocationSource()])
+		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
 
 		const session1 = manager.getOrCreate("user-1")
 		const session2 = manager.getOrCreate("user-2")
@@ -51,7 +51,7 @@ describe("UserSessionManager", () => {
 	})
 
 	test("remove destroys session and allows re-creation", () => {
-		const manager = new UserSessionManager([() => new LocationSource()])
+		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
 
 		const session1 = manager.getOrCreate("user-1")
 		manager.remove("user-1")
@@ -61,13 +61,13 @@ describe("UserSessionManager", () => {
 	})
 
 	test("remove is no-op for unknown user", () => {
-		const manager = new UserSessionManager([() => new LocationSource()])
+		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
 
 		expect(() => manager.remove("unknown")).not.toThrow()
 	})
 
 	test("accepts function providers", async () => {
-		const manager = new UserSessionManager([() => new LocationSource()])
+		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
 
 		const session = manager.getOrCreate("user-1")
 		const result = await session.engine.refresh()
@@ -77,7 +77,9 @@ describe("UserSessionManager", () => {
 
 	test("accepts object providers", () => {
 		const provider = new WeatherSourceProvider({ client: mockWeatherClient })
-		const manager = new UserSessionManager([() => new LocationSource(), provider])
+		const manager = new UserSessionManager({
+			providers: [() => new LocationSource(), provider],
+		})
 
 		const session = manager.getOrCreate("user-1")
 
@@ -86,7 +88,9 @@ describe("UserSessionManager", () => {
 
 	test("accepts mixed providers", () => {
 		const provider = new WeatherSourceProvider({ client: mockWeatherClient })
-		const manager = new UserSessionManager([() => new LocationSource(), provider])
+		const manager = new UserSessionManager({
+			providers: [() => new LocationSource(), provider],
+		})
 
 		const session = manager.getOrCreate("user-1")
 
@@ -95,7 +99,7 @@ describe("UserSessionManager", () => {
 	})
 
 	test("refresh returns feed result through session", async () => {
-		const manager = new UserSessionManager([() => new LocationSource()])
+		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
 
 		const session = manager.getOrCreate("user-1")
 		const result = await session.engine.refresh()
@@ -107,7 +111,7 @@ describe("UserSessionManager", () => {
 	})
 
 	test("location update via executeAction works", async () => {
-		const manager = new UserSessionManager([() => new LocationSource()])
+		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
 
 		const session = manager.getOrCreate("user-1")
 		await session.engine.executeAction("aris.location", "update-location", {
@@ -122,7 +126,7 @@ describe("UserSessionManager", () => {
 	})
 
 	test("subscribe receives updates after location push", async () => {
-		const manager = new UserSessionManager([() => new LocationSource()])
+		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
 		const callback = mock()
 
 		const session = manager.getOrCreate("user-1")
@@ -142,7 +146,7 @@ describe("UserSessionManager", () => {
 	})
 
 	test("remove stops reactive updates", async () => {
-		const manager = new UserSessionManager([() => new LocationSource()])
+		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
 		const callback = mock()
 
 		const session = manager.getOrCreate("user-1")

apps/aris-backend/src/session/user-session-manager.ts

@@ -1,12 +1,21 @@
+import type { FeedEnhancer } from "../enhancement/enhance-feed.ts"
 import type { FeedSourceProviderInput } from "./feed-source-provider.ts"
+
 import { UserSession } from "./user-session.ts"
 
+export interface UserSessionManagerConfig {
+	providers: FeedSourceProviderInput[]
+	feedEnhancer?: FeedEnhancer | null
+}
+
 export class UserSessionManager {
 	private sessions = new Map<string, UserSession>()
 	private readonly providers: FeedSourceProviderInput[]
+	private readonly feedEnhancer: FeedEnhancer | null
 
-	constructor(providers: FeedSourceProviderInput[]) {
-		this.providers = providers
+	constructor(config: UserSessionManagerConfig) {
+		this.providers = config.providers
+		this.feedEnhancer = config.feedEnhancer ?? null
 	}
 
 	getOrCreate(userId: string): UserSession {
@@ -15,7 +24,7 @@ export class UserSessionManager {
 			const sources = this.providers.map((p) =>
 				typeof p === "function" ? p(userId) : p.feedSourceForUser(userId),
 			)
-			session = new UserSession(sources)
+			session = new UserSession(sources, this.feedEnhancer)
 			this.sessions.set(userId, session)
 		}
 		return session

apps/aris-backend/src/session/user-session.test.ts

@@ -1,11 +1,11 @@
-import type { ActionDefinition, Context, FeedSource } from "@aris/core"
+import type { ActionDefinition, ContextEntry, FeedItem, FeedSource } from "@aris/core"
 
 import { LocationSource } from "@aris/source-location"
 import { describe, expect, test } from "bun:test"
 
 import { UserSession } from "./user-session.ts"
 
-function createStubSource(id: string): FeedSource {
+function createStubSource(id: string, items: FeedItem[] = []): FeedSource {
 	return {
 		id,
 		async listActions(): Promise<Record<string, ActionDefinition>> {
@@ -14,11 +14,11 @@ function createStubSource(id: string): FeedSource {
 		async executeAction(): Promise<unknown> {
 			return undefined
 		},
-		async fetchContext(): Promise<Partial<Context> | null> {
+		async fetchContext(): Promise<readonly ContextEntry[] | null> {
 			return null
 		},
 		async fetchItems() {
-			return []
+			return items
 		},
 	}
 }
@@ -70,3 +70,141 @@ describe("UserSession", () => {
 		expect(location.lastLocation!.lat).toBe(51.5)
 	})
 })
+
+describe("UserSession.feed", () => {
+	test("returns feed items without enhancer", async () => {
+		const items: FeedItem[] = [
+			{
+				id: "item-1",
+				type: "test",
+				timestamp: new Date("2025-01-01T00:00:00.000Z"),
+				data: { value: 42 },
+			},
+		]
+		const session = new UserSession([createStubSource("test", items)])
+
+		const result = await session.feed()
+
+		expect(result.items).toHaveLength(1)
+		expect(result.items[0]!.id).toBe("item-1")
+	})
+
+	test("returns enhanced items when enhancer is provided", async () => {
+		const items: FeedItem[] = [
+			{
+				id: "item-1",
+				type: "test",
+				timestamp: new Date("2025-01-01T00:00:00.000Z"),
+				data: { value: 42 },
+			},
+		]
+		const enhancer = async (feedItems: FeedItem[]) =>
+			feedItems.map((item) => ({ ...item, data: { ...item.data, enhanced: true } }))
+
+		const session = new UserSession([createStubSource("test", items)], enhancer)
+
+		const result = await session.feed()
+
+		expect(result.items).toHaveLength(1)
+		expect(result.items[0]!.data.enhanced).toBe(true)
+	})
+
+	test("caches enhanced items on subsequent calls", async () => {
+		const items: FeedItem[] = [
+			{
+				id: "item-1",
+				type: "test",
+				timestamp: new Date("2025-01-01T00:00:00.000Z"),
+				data: { value: 42 },
+			},
+		]
+		let enhancerCallCount = 0
+		const enhancer = async (feedItems: FeedItem[]) => {
+			enhancerCallCount++
+			return feedItems.map((item) => ({ ...item, data: { ...item.data, enhanced: true } }))
+		}
+
+		const session = new UserSession([createStubSource("test", items)], enhancer)
+
+		const result1 = await session.feed()
+		expect(result1.items[0]!.data.enhanced).toBe(true)
+		expect(enhancerCallCount).toBe(1)
+
+		const result2 = await session.feed()
+		expect(result2.items[0]!.data.enhanced).toBe(true)
+		expect(enhancerCallCount).toBe(1)
+	})
+
+	test("re-enhances after engine refresh with new data", async () => {
+		let currentItems: FeedItem[] = [
+			{
+				id: "item-1",
+				type: "test",
+				timestamp: new Date("2025-01-01T00:00:00.000Z"),
+				data: { version: 1 },
+			},
+		]
+		const source = createStubSource("test", currentItems)
+		// Make fetchItems dynamic so refresh returns new data
+		source.fetchItems = async () => currentItems
+
+		const enhancedVersions: number[] = []
+		const enhancer = async (feedItems: FeedItem[]) => {
+			const version = feedItems[0]!.data.version as number
+			enhancedVersions.push(version)
+			return feedItems.map((item) => ({
+				...item,
+				data: { ...item.data, enhanced: true },
+			}))
+		}
+
+		const session = new UserSession([source], enhancer)
+
+		// First feed triggers refresh + enhancement
+		const result1 = await session.feed()
+		expect(result1.items[0]!.data.version).toBe(1)
+		expect(result1.items[0]!.data.enhanced).toBe(true)
+
+		// Update source data and trigger engine refresh
+		currentItems = [
+			{
+				id: "item-1",
+				type: "test",
+				timestamp: new Date("2025-01-02T00:00:00.000Z"),
+				data: { version: 2 },
+			},
+		]
+		await session.engine.refresh()
+
+		// Wait for subscriber-triggered background enhancement
+		await new Promise((resolve) => setTimeout(resolve, 10))
+
+		// feed() should now serve re-enhanced items with version 2
+		const result2 = await session.feed()
+		expect(result2.items[0]!.data.version).toBe(2)
+		expect(result2.items[0]!.data.enhanced).toBe(true)
+		expect(enhancedVersions).toEqual([1, 2])
+	})
+
+	test("falls back to unenhanced items when enhancer throws", async () => {
+		const items: FeedItem[] = [
+			{
+				id: "item-1",
+				type: "test",
+				timestamp: new Date("2025-01-01T00:00:00.000Z"),
+				data: { value: 42 },
+			},
+		]
+		const enhancer = async () => {
+			throw new Error("enhancement exploded")
+		}
+
+		const session = new UserSession([createStubSource("test", items)], enhancer)
+
+		const result = await session.feed()
+
+		expect(result.items).toHaveLength(1)
+		expect(result.items[0]!.id).toBe("item-1")
+		expect(result.items[0]!.data.value).toBe(42)
+	})
+})

apps/aris-backend/src/session/user-session.ts

@@ -1,24 +1,104 @@
-import { FeedEngine, type FeedSource } from "@aris/core"
+import { FeedEngine, type FeedItem, type FeedResult, type FeedSource } from "@aris/core"
+
+import type { FeedEnhancer } from "../enhancement/enhance-feed.ts"
 
 export class UserSession {
 	readonly engine: FeedEngine
 	private sources = new Map<string, FeedSource>()
+	private readonly enhancer: FeedEnhancer | null
+	private enhancedItems: FeedItem[] | null = null
+	/** The FeedResult that enhancedItems was derived from. */
+	private enhancedSource: FeedResult | null = null
+	private enhancingPromise: Promise<void> | null = null
+	private unsubscribe: (() => void) | null = null
 
-	constructor(sources: FeedSource[]) {
+	constructor(sources: FeedSource[], enhancer?: FeedEnhancer | null) {
 		this.engine = new FeedEngine()
+		this.enhancer = enhancer ?? null
 		for (const source of sources) {
 			this.sources.set(source.id, source)
 			this.engine.register(source)
 		}
+
+		if (this.enhancer) {
+			this.unsubscribe = this.engine.subscribe((result) => {
+				this.invalidateEnhancement()
+				this.runEnhancement(result)
+			})
+		}
+
 		this.engine.start()
 	}
 
+	/**
+	 * Returns the current feed, refreshing if the engine cache expired.
+	 * Enhancement runs eagerly on engine updates; this method awaits
+	 * any in-flight enhancement or triggers one if needed.
+	 */
+	async feed(): Promise<FeedResult> {
+		const cached = this.engine.lastFeed()
+		const result = cached ?? (await this.engine.refresh())
+
+		if (!this.enhancer) {
+			return result
+		}
+
+		// Wait for any in-flight background enhancement to finish
+		if (this.enhancingPromise) {
+			await this.enhancingPromise
+		}
+
+		// Serve cached enhancement only if it matches the current engine result
+		if (this.enhancedItems && this.enhancedSource === result) {
+			return { ...result, items: this.enhancedItems }
+		}
+
+		// Stale or missing — re-enhance
+		await this.runEnhancement(result)
+
+		if (this.enhancedItems) {
+			return { ...result, items: this.enhancedItems }
+		}
+
+		return result
+	}
+
 	getSource<T extends FeedSource>(sourceId: string): T | undefined {
 		return this.sources.get(sourceId) as T | undefined
 	}
 
 	destroy(): void {
+		this.unsubscribe?.()
+		this.unsubscribe = null
 		this.engine.stop()
 		this.sources.clear()
+		this.invalidateEnhancement()
+		this.enhancingPromise = null
+	}
+
+	private invalidateEnhancement(): void {
+		this.enhancedItems = null
+		this.enhancedSource = null
+	}
+
+	private runEnhancement(result: FeedResult): Promise<void> {
+		const promise = this.enhance(result)
+		this.enhancingPromise = promise
+		promise.finally(() => {
+			if (this.enhancingPromise === promise) {
+				this.enhancingPromise = null
+			}
+		})
+		return promise
+	}
+
+	private async enhance(result: FeedResult): Promise<void> {
+		try {
+			this.enhancedItems = await this.enhancer!(result.items)
+			this.enhancedSource = result
+		} catch (err) {
+			console.error("[enhancement] Unexpected error:", err)
+			this.invalidateEnhancement()
+		}
 	}
 }

apps/aris-backend/src/trpc/context.ts

@@ -1,14 +0,0 @@
-import type { FetchCreateContextFnOptions } from "@trpc/server/adapters/fetch"
-
-import { auth } from "../auth/index.ts"
-
-export async function createContext(opts: FetchCreateContextFnOptions) {
-	const session = await auth.api.getSession({ headers: opts.req.headers })
-
-	return {
-		user: session?.user ?? null,
-		session: session?.session ?? null,
-	}
-}
-
-export type Context = Awaited<ReturnType<typeof createContext>>

apps/aris-backend/src/trpc/router.ts

@@ -1,44 +0,0 @@
-import { initTRPC, TRPCError } from "@trpc/server"
-
-import type { UserSessionManager } from "../session/index.ts"
-import type { Context } from "./context.ts"
-
-import { createLocationRouter } from "../location/router.ts"
-
-export type TRPC = ReturnType<typeof createTRPC>
-
-export interface TRPCRouterDeps {
-	sessionManager: UserSessionManager
-}
-
-export function createTRPCRouter({ sessionManager }: TRPCRouterDeps) {
-	const t = createTRPC()
-
-	return t.router({
-		location: createLocationRouter(t, { sessionManager }),
-	})
-}
-
-export type TRPCRouter = ReturnType<typeof createTRPCRouter>
-
-function createTRPC() {
-	const t = initTRPC.context<Context>().create()
-
-	const isAuthed = t.middleware(({ ctx, next }) => {
-		if (!ctx.user || !ctx.session) {
-			throw new TRPCError({ code: "UNAUTHORIZED" })
-		}
-		return next({
-			ctx: {
-				user: ctx.user,
-				session: ctx.session,
-			},
-		})
-	})
-
-	return {
-		router: t.router,
-		procedure: t.procedure.use(isAuthed),
-	}
-}
-

apps/aris-client/app.json

@@ -46,7 +46,97 @@
 					}
 				}
 			],
-			"expo-font"
+			[
+				"expo-font",
+				{
+					"android": {
+						"fonts": [
+							{
+								"fontFamily": "Inter",
+								"fontDefinitions": [
+									{ "path": "./assets/fonts/Inter_100Thin.ttf", "weight": 100 },
+									{ "path": "./assets/fonts/Inter_100Thin_Italic.ttf", "weight": 100, "style": "italic" },
+									{ "path": "./assets/fonts/Inter_200ExtraLight.ttf", "weight": 200 },
+									{ "path": "./assets/fonts/Inter_200ExtraLight_Italic.ttf", "weight": 200, "style": "italic" },
+									{ "path": "./assets/fonts/Inter_300Light.ttf", "weight": 300 },
+									{ "path": "./assets/fonts/Inter_300Light_Italic.ttf", "weight": 300, "style": "italic" },
+									{ "path": "./assets/fonts/Inter_400Regular.ttf", "weight": 400 },
+									{ "path": "./assets/fonts/Inter_400Regular_Italic.ttf", "weight": 400, "style": "italic" },
+									{ "path": "./assets/fonts/Inter_500Medium.ttf", "weight": 500 },
+									{ "path": "./assets/fonts/Inter_500Medium_Italic.ttf", "weight": 500, "style": "italic" },
+									{ "path": "./assets/fonts/Inter_600SemiBold.ttf", "weight": 600 },
+									{ "path": "./assets/fonts/Inter_600SemiBold_Italic.ttf", "weight": 600, "style": "italic" },
+									{ "path": "./assets/fonts/Inter_700Bold.ttf", "weight": 700 },
+									{ "path": "./assets/fonts/Inter_700Bold_Italic.ttf", "weight": 700, "style": "italic" },
+									{ "path": "./assets/fonts/Inter_800ExtraBold.ttf", "weight": 800 },
+									{ "path": "./assets/fonts/Inter_800ExtraBold_Italic.ttf", "weight": 800, "style": "italic" },
+									{ "path": "./assets/fonts/Inter_900Black.ttf", "weight": 900 },
+									{ "path": "./assets/fonts/Inter_900Black_Italic.ttf", "weight": 900, "style": "italic" }
+								]
+							},
+							{
+								"fontFamily": "Source Serif 4",
+								"fontDefinitions": [
+									{ "path": "./assets/fonts/SourceSerif4_200ExtraLight.ttf", "weight": 200 },
+									{ "path": "./assets/fonts/SourceSerif4_200ExtraLight_Italic.ttf", "weight": 200, "style": "italic" },
+									{ "path": "./assets/fonts/SourceSerif4_300Light.ttf", "weight": 300 },
+									{ "path": "./assets/fonts/SourceSerif4_300Light_Italic.ttf", "weight": 300, "style": "italic" },
+									{ "path": "./assets/fonts/SourceSerif4_400Regular.ttf", "weight": 400 },
+									{ "path": "./assets/fonts/SourceSerif4_400Regular_Italic.ttf", "weight": 400, "style": "italic" },
+									{ "path": "./assets/fonts/SourceSerif4_500Medium.ttf", "weight": 500 },
+									{ "path": "./assets/fonts/SourceSerif4_500Medium_Italic.ttf", "weight": 500, "style": "italic" },
+									{ "path": "./assets/fonts/SourceSerif4_600SemiBold.ttf", "weight": 600 },
+									{ "path": "./assets/fonts/SourceSerif4_600SemiBold_Italic.ttf", "weight": 600, "style": "italic" },
+									{ "path": "./assets/fonts/SourceSerif4_700Bold.ttf", "weight": 700 },
+									{ "path": "./assets/fonts/SourceSerif4_700Bold_Italic.ttf", "weight": 700, "style": "italic" },
+									{ "path": "./assets/fonts/SourceSerif4_800ExtraBold.ttf", "weight": 800 },
+									{ "path": "./assets/fonts/SourceSerif4_800ExtraBold_Italic.ttf", "weight": 800, "style": "italic" },
+									{ "path": "./assets/fonts/SourceSerif4_900Black.ttf", "weight": 900 },
+									{ "path": "./assets/fonts/SourceSerif4_900Black_Italic.ttf", "weight": 900, "style": "italic" }
+								]
+							}
+						]
+					},
+					"ios": {
+						"fonts": [
+							"./assets/fonts/Inter_100Thin.ttf",
+							"./assets/fonts/Inter_100Thin_Italic.ttf",
+							"./assets/fonts/Inter_200ExtraLight.ttf",
+							"./assets/fonts/Inter_200ExtraLight_Italic.ttf",
+							"./assets/fonts/Inter_300Light.ttf",
+							"./assets/fonts/Inter_300Light_Italic.ttf",
+							"./assets/fonts/Inter_400Regular.ttf",
+							"./assets/fonts/Inter_400Regular_Italic.ttf",
+							"./assets/fonts/Inter_500Medium.ttf",
+							"./assets/fonts/Inter_500Medium_Italic.ttf",
+							"./assets/fonts/Inter_600SemiBold.ttf",
+							"./assets/fonts/Inter_600SemiBold_Italic.ttf",
+							"./assets/fonts/Inter_700Bold.ttf",
+							"./assets/fonts/Inter_700Bold_Italic.ttf",
+							"./assets/fonts/Inter_800ExtraBold.ttf",
+							"./assets/fonts/Inter_800ExtraBold_Italic.ttf",
+							"./assets/fonts/Inter_900Black.ttf",
+							"./assets/fonts/Inter_900Black_Italic.ttf",
+							"./assets/fonts/SourceSerif4_200ExtraLight.ttf",
+							"./assets/fonts/SourceSerif4_200ExtraLight_Italic.ttf",
+							"./assets/fonts/SourceSerif4_300Light.ttf",
+							"./assets/fonts/SourceSerif4_300Light_Italic.ttf",
+							"./assets/fonts/SourceSerif4_400Regular.ttf",
+							"./assets/fonts/SourceSerif4_400Regular_Italic.ttf",
+							"./assets/fonts/SourceSerif4_500Medium.ttf",
+							"./assets/fonts/SourceSerif4_500Medium_Italic.ttf",
+							"./assets/fonts/SourceSerif4_600SemiBold.ttf",
+							"./assets/fonts/SourceSerif4_600SemiBold_Italic.ttf",
+							"./assets/fonts/SourceSerif4_700Bold.ttf",
+							"./assets/fonts/SourceSerif4_700Bold_Italic.ttf",
+							"./assets/fonts/SourceSerif4_800ExtraBold.ttf",
+							"./assets/fonts/SourceSerif4_800ExtraBold_Italic.ttf",
+							"./assets/fonts/SourceSerif4_900Black.ttf",
+							"./assets/fonts/SourceSerif4_900Black_Italic.ttf"
+						]
+					}
+				}
+			]
 		],
 		"experiments": {
 			"typedRoutes": true,

apps/aris-client/package.json

@@ -16,6 +16,7 @@
 	},
 	"dependencies": {
 		"@expo-google-fonts/inter": "^0.4.2",
+		"@expo-google-fonts/source-serif-4": "^0.4.1",
 		"@expo/vector-icons": "^15.0.3",
 		"@react-navigation/bottom-tabs": "^7.4.0",
 		"@react-navigation/elements": "^2.6.3",

apps/waitlist-website/.dockerignore

@@ -0,0 +1,5 @@
+.react-router
+build
+node_modules
+.env
+README.md

apps/waitlist-website/.gitignore

@@ -0,0 +1,7 @@
+.DS_Store
+.env
+/node_modules/
+
+# React Router
+/.react-router/
+/build/

apps/waitlist-website/Dockerfile

@@ -0,0 +1,22 @@
+FROM oven/bun:1 AS development-dependencies-env
+COPY . /app
+WORKDIR /app
+RUN bun install
+
+FROM oven/bun:1 AS production-dependencies-env
+COPY ./package.json /app/
+WORKDIR /app
+RUN bun install --production
+
+FROM oven/bun:1 AS build-env
+COPY . /app/
+COPY --from=development-dependencies-env /app/node_modules /app/node_modules
+WORKDIR /app
+RUN bun run build
+
+FROM node:20-alpine
+COPY ./package.json /app/
+COPY --from=production-dependencies-env /app/node_modules /app/node_modules
+COPY --from=build-env /app/build /app/build
+WORKDIR /app
+CMD ["npm", "run", "start"]

apps/waitlist-website/README.md

@@ -0,0 +1,87 @@
+# Welcome to React Router!
+
+A modern, production-ready template for building full-stack React applications using React Router.
+
+[![Open in StackBlitz](https://developer.stackblitz.com/img/open_in_stackblitz.svg)](https://stackblitz.com/github/remix-run/react-router-templates/tree/main/default)
+
+## Features
+
+- 🚀 Server-side rendering
+- ⚡️ Hot Module Replacement (HMR)
+- 📦 Asset bundling and optimization
+- 🔄 Data loading and mutations
+- 🔒 TypeScript by default
+- 🎉 TailwindCSS for styling
+- 📖 [React Router docs](https://reactrouter.com/)
+
+## Getting Started
+
+### Installation
+
+Install the dependencies:
+
+```bash
+npm install
+```
+
+### Development
+
+Start the development server with HMR:
+
+```bash
+npm run dev
+```
+
+Your application will be available at `http://localhost:5173`.
+
+## Building for Production
+
+Create a production build:
+
+```bash
+npm run build
+```
+
+## Deployment
+
+### Docker Deployment
+
+To build and run using Docker:
+
+```bash
+docker build -t my-app .
+
+# Run the container
+docker run -p 3000:3000 my-app
+```
+
+The containerized application can be deployed to any platform that supports Docker, including:
+
+- AWS ECS
+- Google Cloud Run
+- Azure Container Apps
+- Digital Ocean App Platform
+- Fly.io
+- Railway
+
+### DIY Deployment
+
+If you're familiar with deploying Node applications, the built-in app server is production-ready.
+
+Make sure to deploy the output of `npm run build`
+
+```
+├── package.json
+├── package-lock.json (or pnpm-lock.yaml, or bun.lockb)
+├── build/
+│   ├── client/    # Static assets
+│   └── server/    # Server-side code
+```
+
+## Styling
+
+This template comes with [Tailwind CSS](https://tailwindcss.com/) already configured for a simple default starting experience. You can use whatever CSS framework you prefer.
+
+---
+
+Built with ❤️ using React Router.

apps/waitlist-website/app/app.css

@@ -0,0 +1,51 @@
+@import url("https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,200..900;1,8..60,200..900&display=swap");
+@import "tailwindcss";
+
+@source "../node_modules/streamdown/dist/*.js";
+
+@theme {
+	--font-sans:
+		"Inter", ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji",
+		"Segoe UI Symbol", "Noto Color Emoji";
+	--font-serif: "Source Serif 4", ui-serif, serif;
+}
+
+:root,
+html,
+body {
+	@apply w-full h-full;
+}
+
+@keyframes popover-in {
+	from {
+		opacity: 0;
+		transform: scale(0.95) translateY(4px);
+	}
+	to {
+		opacity: 1;
+		transform: scale(1) translateY(0);
+	}
+}
+
+@keyframes popover-out {
+	from {
+		opacity: 1;
+		transform: scale(1) translateY(0);
+	}
+	to {
+		opacity: 0;
+		transform: scale(0.95) translateY(4px);
+	}
+}
+
+html,
+body {
+	-webkit-font-smoothing: antialiased;
+	-moz-osx-font-smoothing: grayscale;
+
+	@apply bg-stone-50 dark:bg-stone-900 text-stone-900 dark:text-stone-200 selection:bg-teal-600 dark:selection:bg-teal-500 selection:text-stone-50 dark:selection:text-stone-900;
+
+	@media (prefers-color-scheme: dark) {
+		color-scheme: dark;
+	}
+}

apps/waitlist-website/app/chat/chat-box.tsx

@@ -0,0 +1,117 @@
+import clsx from "clsx"
+import { ArrowUpIcon, FileIcon, ImageIcon, PlusIcon, XIcon } from "lucide-react"
+import { motion, useAnimate } from "motion/react"
+import { useEffect, useRef, useState } from "react"
+import { Button, Menu, MenuItem, MenuTrigger, Popover } from "react-aria-components"
+
+export function ChatBox({
+	className,
+	validate,
+	onSubmit,
+}: {
+	className?: string
+	validate?: (value: string) => boolean
+	onSubmit: (email: string) => void
+	disabled?: boolean
+}) {
+	const [scope, animate] = useAnimate()
+	const [shouldShowInvalid, setShouldShowInvalid] = useState(false)
+	const clearInvalidStateTimeout = useRef<ReturnType<typeof setTimeout> | null>(null)
+
+	useEffect(
+		() => () => {
+			if (clearInvalidStateTimeout.current) {
+				clearTimeout(clearInvalidStateTimeout.current)
+			}
+		},
+		[],
+	)
+
+	function showInvalidState() {
+		animate(scope.current, { x: [0, -6, 6, -4, 4, -2, 2, 0] }, { duration: 0.4, ease: "easeOut" })
+		if (clearInvalidStateTimeout.current) {
+			clearTimeout(clearInvalidStateTimeout.current)
+		}
+		setShouldShowInvalid(true)
+		clearInvalidStateTimeout.current = setTimeout(() => {
+			setShouldShowInvalid(false)
+		}, 500)
+	}
+
+	const onFormSubmit = (e: React.FormEvent<HTMLFormElement>) => {
+		e.preventDefault()
+		const formData = new FormData(e.currentTarget)
+		const email = formData.get("liame")
+		if (typeof email === "string") {
+			const trimmed = email.trim()
+			if (trimmed.length === 0) {
+				showInvalidState()
+			} else if (validate && !validate(trimmed)) {
+				showInvalidState()
+			} else {
+				onSubmit(trimmed)
+				e.currentTarget.reset()
+			}
+		}
+	}
+
+	return (
+		<motion.form
+			ref={scope}
+			onSubmit={onFormSubmit}
+			className={`min-h-20 px-3 pt-2 pb-1.5 flex flex-col justify-between rounded-lg bg-stone-100 dark:bg-stone-800 border border-stone-200 dark:border-stone-700 ${className ?? ""} shadow-xs hover:shadow-sm`}
+		>
+			<input
+				name="liame"
+				className="w-full bg-transparent outline-none focus:outline-none ring-0 focus:ring-0"
+			/>
+			<div className="w-full flex justify-between">
+				<MenuTrigger>
+					<Button className="bg-transparent hover:bg-stone-200 dark:hover:bg-stone-700 active:bg-stone-300 dark:active:bg-stone-600 data-[pressed]:bg-stone-200 dark:data-[pressed]:bg-stone-700 rounded-full flex items-center justify-center p-1 -ml-1.5 active:inset-shadow-sm outline-none transition-transform duration-200 data-[pressed]:rotate-45">
+						<PlusIcon size={16} />
+					</Button>
+					<Popover
+						offset={4}
+						className="origin-bottom-left rounded-lg border border-stone-200 dark:border-stone-700 bg-stone-100 dark:bg-stone-800 shadow-lg p-1 min-w-40 outline-none data-[entering]:animate-[popover-in_150ms_ease-out] data-[exiting]:animate-[popover-out_100ms_ease-in]"
+						placement="top start"
+					>
+						<AttachmentMenu />
+					</Popover>
+				</MenuTrigger>
+				<button
+					type="submit"
+					disabled={shouldShowInvalid}
+					className={clsx(
+						"transition-all rounded-full flex items-center justify-center p-1 -mr-1.5 active:scale-95",
+						shouldShowInvalid
+							? "bg-red-400 hover:bg-red-300 text-stone-200 dark:text-stone-700"
+							: "bg-teal-600 hover:bg-teal-500 active:bg-teal-600 text-stone-200",
+					)}
+				>
+					{shouldShowInvalid ? <XIcon size={16} /> : <ArrowUpIcon size={16} />}
+				</button>
+			</div>
+		</motion.form>
+	)
+}
+
+function AttachmentMenu() {
+	return (
+		<Menu className="outline-none">
+			<MenuItem
+				className="flex items-center gap-2 px-2 py-1 rounded-md cursor-default outline-none hover:bg-stone-200 dark:hover:bg-stone-700 focus:bg-stone-200 dark:focus:bg-stone-700"
+				onAction={() => {}}
+			>
+				<ImageIcon size={14} />
+				Photos
+			</MenuItem>
+			<MenuItem
+				className="flex items-center gap-2 px-2 py-1 rounded-md cursor-default outline-none hover:bg-stone-200 dark:hover:bg-stone-700 focus:bg-stone-200 dark:focus:bg-stone-700"
+				onAction={() => {}}
+			>
+				<FileIcon size={14} />
+				Files
+			</MenuItem>
+		</Menu>
+	)
+}

apps/waitlist-website/app/chat/message.ts

@@ -0,0 +1,66 @@
+export interface UserMessage {
+	role: "user"
+	message: string
+	bubbleLayoutId?: string
+}
+
+export interface SystemMessage {
+	role: "system"
+	message: string
+}
+
+export type Message = UserMessage | SystemMessage
+
+function timeOfDay() {
+	const hours = new Date().getHours()
+	if (hours >= 5 && hours < 12) {
+		return "morning"
+	} else if (hours >= 12 && hours < 18) {
+		return "afternoon"
+	} else if (hours >= 18 && hours < 22) {
+		return "evening"
+	}
+	return "night"
+}
+
+export const INITIAL_MESSAGES: Message[] = [
+	{
+		role: "user",
+		message: "Who are you?",
+	},
+	{
+		role: "system",
+		message: `Hey! I'm **Aelis** — your personal assistant that brings you the right thing, at the right time, in the right place.
+
+- Jubilee line down? I've already found you an alternative route.
+- Dinner reservation at 8? I'll have the restaurant, directions, and the menu ready before you head out.
+
+I learn your routines, anticipate what's next, and surface what matters before you even think to look for it.
+
+I'm not ready yet — [@kennethnym](https://x.com/kennethnym) is still building me. **Drop your email below** and I'll let you know when I'm available.`,
+	},
+]
+
+export function waitListJoinedMessage(email: string): SystemMessage {
+	return {
+		role: "system",
+		message: `Thanks for joining the waitlist! I've sent you a confirmation email.
+I'll send an email to **${email}** when I'm ready.
+
+Have a good ${timeOfDay()}!`,
+	}
+}
+
+export function duplicateEmailMessage(): SystemMessage {
+	return {
+		role: "system",
+		message: `I appreciate your excitement! You are already on the waitlist. When I am ready, I will reach out again. Have a good ${timeOfDay()} :)`,
+	}
+}
+
+export function troubleMessage(): SystemMessage {
+	return {
+		role: "system",
+		message: `I apologize, but I am having trouble adding you to the waitlist. Could you refresh the page and try again please in a moment?`,
+	}
+}

apps/waitlist-website/app/chat/use-fake-streaming.ts

@@ -0,0 +1,23 @@
+import { useEffect, useMemo, useState } from "react"
+
+export function useFakeStreaming(fullContent: string) {
+	const [currentContent, setCurrentContent] = useState("")
+	const [isStreaming, setIsStreaming] = useState(true)
+
+	useEffect(() => {
+		const words = fullContent.split(" ")
+
+		let i = 0
+		const id = setInterval(() => {
+			if (i > words.length) {
+				setIsStreaming(false)
+				clearInterval(id)
+			} else {
+				setCurrentContent(words.slice(0, i).join(" ") + " ")
+				i++
+			}
+		}, 20)
+	}, [fullContent])
+
+	return useMemo(() => ({ currentContent, isStreaming }), [currentContent, isStreaming])
+}

apps/waitlist-website/app/components/animated-logo.tsx

@@ -0,0 +1,168 @@
+import Lottie, { type LottieRef } from "lottie-react"
+import { useEffect, useRef, useState } from "react"
+
+import { useColorScheme } from "~/hooks/use-color-scheme"
+import clickedAnimationDark from "~/lottie/clicked-dark.json"
+import clickedAnimationLight from "~/lottie/clicked-light.json"
+import loadingAnimationDark from "~/lottie/loading-dark.json"
+import loadingAnimationLight from "~/lottie/loading-light.json"
+import startLoadingAnimationDark from "~/lottie/start-loading-dark.json"
+import startLoadingAnimationLight from "~/lottie/start-loading-light.json"
+
+export const AnimatedLogoState = {
+	Idle: "idle",
+	Loading: "loading",
+} as const
+export type AnimatedLogoState = (typeof AnimatedLogoState)[keyof typeof AnimatedLogoState]
+
+interface AnimatedLogoProps {
+	state: AnimatedLogoState
+	className?: string
+}
+
+interface Animation {
+	loop: boolean
+	reverse: boolean
+	sticky: boolean
+	data: unknown
+}
+
+export function AnimatedLogo({ state, className }: AnimatedLogoProps) {
+	const colorScheme = useColorScheme()
+	const [animationQueue, setAnimationQueue] = useState<Animation[]>([])
+	const lottieRef: LottieRef = useRef(null)
+
+	let currentAnimation: Animation
+	let isIdle = false
+	if (animationQueue.length === 0) {
+		isIdle = true
+		currentAnimation = {
+			loop: false,
+			reverse: false,
+			sticky: false,
+			data: colorScheme === "dark" ? startLoadingAnimationDark : startLoadingAnimationLight,
+		}
+	} else {
+		isIdle = false
+		currentAnimation = animationQueue[0]
+	}
+
+	useEffect(() => {
+		if (state === AnimatedLogoState.Loading) {
+			setAnimationQueue((queue) => [
+				...queue,
+				{
+					loop: false,
+					reverse: false,
+					sticky: false,
+					data: colorScheme === "dark" ? startLoadingAnimationDark : startLoadingAnimationLight,
+				},
+				{
+					loop: true,
+					reverse: false,
+					sticky: false,
+					data: colorScheme === "dark" ? loadingAnimationDark : loadingAnimationLight,
+				},
+			])
+		} else if (state === AnimatedLogoState.Idle) {
+			setAnimationQueue((queue) => {
+				const last = queue.at(-1)
+				if (!last) {
+					return []
+				}
+				if (
+					last.loop &&
+					(last.data === loadingAnimationDark || last.data === loadingAnimationLight)
+				) {
+					return [
+						...queue,
+						{
+							loop: false,
+							sticky: false,
+							reverse: false,
+							data: colorScheme === "dark" ? loadingAnimationDark : loadingAnimationLight,
+						},
+						{
+							loop: false,
+							sticky: false,
+							reverse: true,
+							data: colorScheme === "dark" ? startLoadingAnimationDark : startLoadingAnimationLight,
+						},
+					]
+				}
+				return []
+			})
+		}
+	}, [state])
+
+	useEffect(() => {
+		if (!lottieRef.current) {
+			return
+		}
+		if (currentAnimation.reverse) {
+			const frames = lottieRef.current.getDuration(true)
+			if (frames) {
+				lottieRef.current.setDirection(-1)
+				lottieRef.current.goToAndPlay(frames - 1, true)
+			}
+		} else if (!isIdle) {
+			lottieRef.current.setDirection(1)
+			lottieRef.current.play()
+		}
+	}, [currentAnimation])
+
+	function onComplete() {
+		if (animationQueue.length > 0 && !animationQueue[0].sticky) {
+			setAnimationQueue((queue) => queue.slice(1))
+		}
+	}
+
+	function onLoopComplete() {
+		const current = animationQueue[0]
+		const next = animationQueue[1]
+		if (current && next && current.data === next.data && current.loop && !next.loop) {
+			setAnimationQueue((queue) => queue.slice(2))
+		}
+	}
+
+	function onMouseDown() {
+		if (state === AnimatedLogoState.Idle) {
+			setAnimationQueue([
+				{
+					loop: false,
+					sticky: true,
+					reverse: false,
+					data: colorScheme === "dark" ? clickedAnimationDark : clickedAnimationLight,
+				},
+			])
+		}
+	}
+
+	function onMouseUp() {
+		if (state === AnimatedLogoState.Idle) {
+			setAnimationQueue((queue) => [
+				{
+					loop: false,
+					sticky: false,
+					reverse: true,
+					data: colorScheme === "dark" ? clickedAnimationDark : clickedAnimationLight,
+				},
+			])
+		}
+	}
+
+	return (
+		<Lottie
+			lottieRef={lottieRef}
+			autoplay={false}
+			loop={currentAnimation.loop}
+			className={className}
+			animationData={currentAnimation.data}
+			onComplete={onComplete}
+			onLoopComplete={onLoopComplete}
+			onMouseDown={onMouseDown}
+			onMouseUp={onMouseUp}
+			onMouseLeave={onMouseUp}
+		/>
+	)
+}

apps/waitlist-website/app/components/progressive-blur.tsx

@@ -0,0 +1,35 @@
+export function ProgressiveBlur({
+	className,
+	direction = "down",
+}: {
+	className?: string
+	direction?: "down" | "up"
+}) {
+	if (direction === "up") {
+		return (
+			<div className={`pointer-events-none ${className ?? ""}`}>
+				<div className="absolute inset-0 backdrop-blur-[1px] [mask:linear-gradient(rgba(0,0,0,0)_0%,rgba(0,0,0,1)_10%,rgba(0,0,0,1)_20%,rgba(0,0,0,0)_30%)]" />
+				<div className="absolute inset-0 backdrop-blur-[2px] [mask:linear-gradient(rgba(0,0,0,0)_10%,rgba(0,0,0,1)_20%,rgba(0,0,0,1)_40%,rgba(0,0,0,0)_50%)]" />
+				<div className="absolute inset-0 backdrop-blur-[4px] [mask:linear-gradient(rgba(0,0,0,0)_20%,rgba(0,0,0,1)_30%,rgba(0,0,0,1)_50%,rgba(0,0,0,0)_60%)]" />
+				<div className="absolute inset-0 backdrop-blur-[8px] [mask:linear-gradient(rgba(0,0,0,0)_30%,rgba(0,0,0,1)_40%,rgba(0,0,0,1)_60%,rgba(0,0,0,0)_70%)]" />
+				<div className="absolute inset-0 backdrop-blur-[16px] [mask:linear-gradient(rgba(0,0,0,0)_40%,rgba(0,0,0,1)_50%,rgba(0,0,0,1)_70%,rgba(0,0,0,0)_80%)]" />
+				<div className="absolute inset-0 backdrop-blur-[32px] [mask:linear-gradient(rgba(0,0,0,0)_50%,rgba(0,0,0,1)_60%,rgba(0,0,0,1)_80%,rgba(0,0,0,0)_90%)]" />
+				<div className="absolute inset-0 backdrop-blur-[64px] [mask:linear-gradient(rgba(0,0,0,0)_70%,rgba(0,0,0,1)_80%,rgba(0,0,0,1)_100%)]" />
+				<div className="absolute inset-0 bg-linear-to-t from-stone-50 dark:from-stone-900 to-transparent" />
+			</div>
+		)
+	}
+
+	return (
+		<div className={`pointer-events-none ${className ?? ""}`}>
+			<div className="absolute inset-0 backdrop-blur-[64px] [mask:linear-gradient(rgba(0,0,0,1)_0%,rgba(0,0,0,1)_20%,rgba(0,0,0,0)_30%)]" />
+			<div className="absolute inset-0 backdrop-blur-[32px] [mask:linear-gradient(rgba(0,0,0,0)_10%,rgba(0,0,0,1)_20%,rgba(0,0,0,1)_40%,rgba(0,0,0,0)_50%)]" />
+			<div className="absolute inset-0 backdrop-blur-[16px] [mask:linear-gradient(rgba(0,0,0,0)_20%,rgba(0,0,0,1)_30%,rgba(0,0,0,1)_50%,rgba(0,0,0,0)_60%)]" />
+			<div className="absolute inset-0 backdrop-blur-[8px] [mask:linear-gradient(rgba(0,0,0,0)_30%,rgba(0,0,0,1)_40%,rgba(0,0,0,1)_60%,rgba(0,0,0,0)_70%)]" />
+			<div className="absolute inset-0 backdrop-blur-[4px] [mask:linear-gradient(rgba(0,0,0,0)_40%,rgba(0,0,0,1)_50%,rgba(0,0,0,1)_70%,rgba(0,0,0,0)_80%)]" />
+			<div className="absolute inset-0 backdrop-blur-[2px] [mask:linear-gradient(rgba(0,0,0,0)_50%,rgba(0,0,0,1)_60%,rgba(0,0,0,1)_80%,rgba(0,0,0,0)_90%)]" />
+			<div className="absolute inset-0 backdrop-blur-[1px] [mask:linear-gradient(rgba(0,0,0,0)_70%,rgba(0,0,0,1)_80%,rgba(0,0,0,1)_90%,rgba(0,0,0,0)_100%)]" />
+			<div className="absolute inset-0 bg-linear-to-b from-stone-50 dark:from-stone-900 to-transparent" />
+		</div>
+	)
+}

apps/waitlist-website/app/hooks/use-color-scheme.ts

@@ -0,0 +1,27 @@
+import { useEffect, useState } from "react"
+
+export const ColorScheme = {
+	Light: "light",
+	Dark: "dark",
+} as const
+export type ColorScheme = (typeof ColorScheme)[keyof typeof ColorScheme]
+
+export function useColorScheme(): ColorScheme {
+	const [scheme, setScheme] = useState<ColorScheme>(() => {
+		if (typeof window === "undefined") return ColorScheme.Light
+		return window.matchMedia("(prefers-color-scheme: dark)").matches
+			? ColorScheme.Dark
+			: ColorScheme.Light
+	})
+
+	useEffect(() => {
+		const mql = window.matchMedia("(prefers-color-scheme: dark)")
+		const handler = (e: MediaQueryListEvent) => {
+			setScheme(e.matches ? ColorScheme.Dark : ColorScheme.Light)
+		}
+		mql.addEventListener("change", handler)
+		return () => mql.removeEventListener("change", handler)
+	}, [])
+
+	return scheme
+}

apps/waitlist-website/app/lottie/clicked-dark.json

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apps/waitlist-website/app/lottie/clicked-light.json

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apps/waitlist-website/app/lottie/start-loading-light.json

@@ -0,0 +1 @@
+{"fr":60,"h":400,"ip":0,"layers":[{"ind":3,"ty":4,"parent":2,"ks":{},"ip":0,"op":31,"st":0,"shapes":[{"ty":"gr","it":[{"ty":"rc","p":{"a":0,"k":[160,26.75]},"r":{"a":0,"k":0},"s":{"a":0,"k":[336,174.5]}},{"ty":"fl","c":{"a":0,"k":[0,0,0,0]},"o":{"a":0,"k":0}},{"ty":"tr","o":{"a":0,"k":100}}]},{"ty":"gr","it":[{"ty":"el","p":{"a":1,"k":[{"t":0,"s":[160,53],"i":{"x":[1,1],"y":[1,1]},"o":{"x":[0,0],"y":[0,0]}},{"t":5.28,"s":[160,53],"i":{"x":[1,0.001],"y":[1,0.998]},"o":{"x":[0,0.349],"y":[0,0]}},{"t":30,"s":[160,0.5],"h":1}]},"s":{"a":1,"k":[{"t":0,"s":[320,106],"i":{"x":[1,1],"y":[1,1]},"o":{"x":[0,0],"y":[0,0]}},{"t":5.28,"s":[320,106],"i":{"x":[1,0.001],"y":[1,0.998]},"o":{"x":[0,0.349],"y":[0,0]}},{"t":30,"s":[320,1],"h":1}]}},{"ty":"st","c":{"a":0,"k":[0.11,0.098,0.09]},"lc":1,"lj":1,"ml":10,"o":{"a":0,"k":100},"w":{"a":0,"k":16}},{"ty":"tr","o":{"a":0,"k":100}}]}]},{"ind":2,"ty":3,"parent":1,"ks":{"a":{"a":1,"k":[{"t":0,"s":[160,53],"i":{"x":[1,1],"y":[1,1]},"o":{"x":[0,0],"y":[0,0]}},{"t":5.28,"s":[160,53],"i":{"x":[1,0.001],"y":[1,0.998]},"o":{"x":[0,0.349],"y":[0,0]}},{"t":30,"s":[160,0.5],"h":1}]},"p":{"a":0,"k":[200.5,200]},"r":{"a":1,"k":[{"t":0,"s":[-30],"h":1},{"t":5.28,"s":[-30],"i":{"x":0.001,"y":0.998},"o":{"x":0.349,"y":0}},{"t":30,"s":[-90],"h":1}]}},"ip":0,"op":31,"st":0},{"ind":5,"ty":4,"parent":4,"ks":{},"ip":0,"op":31,"st":0,"shapes":[{"ty":"gr","it":[{"ty":"rc","p":{"a":0,"k":[160,26.75]},"r":{"a":0,"k":0},"s":{"a":0,"k":[336,174.5]}},{"ty":"fl","c":{"a":0,"k":[0,0,0,0]},"o":{"a":0,"k":0}},{"ty":"tr","o":{"a":0,"k":100}}]},{"ty":"gr","it":[{"ty":"el","p":{"a":1,"k":[{"t":0,"s":[160,53],"i":{"x":[1,0],"y":[1,0.999]},"o":{"x":[0,0.348],"y":[0,0]}},{"t":30,"s":[160,0.5],"h":1}]},"s":{"a":1,"k":[{"t":0,"s":[320,106],"i":{"x":[1,0],"y":[1,0.999]},"o":{"x":[0,0.348],"y":[0,0]}},{"t":30,"s":[320,1],"h":1}]}},{"ty":"st","c":{"a":0,"k":[0.11,0.098,0.09]},"lc":1,"lj":1,"ml":10,"o":{"a":0,"k":100},"w":{"a":0,"k":16}},{"ty":"tr","o":{"a":0,"k":100}}]}]},{"ind":4,"ty":3,"parent":1,"ks":{"a":{"a":1,"k":[{"t":0,"s":[160,53],"i":{"x":[1,0],"y":[1,0.999]},"o":{"x":[0,0.348],"y":[0,0]}},{"t":30,"s":[160,0.5],"h":1}]},"p":{"a":0,"k":[200.594,200.176]},"r":{"a":1,"k":[{"t":0,"s":[30],"i":{"x":0,"y":0.999},"o":{"x":0.348,"y":0}},{"t":30,"s":[90],"h":1}]}},"ip":0,"op":31,"st":0},{"ind":1,"ty":3,"parent":0,"ks":{},"ip":0,"op":31,"st":0},{"ind":0,"ty":3,"ks":{},"ip":0,"op":31,"st":0}],"meta":{"g":"https://jitter.video"},"op":30,"v":"5.7.4","w":400}

apps/waitlist-website/app/root.tsx

@@ -0,0 +1,88 @@
+import { isRouteErrorResponse, Links, Meta, Outlet, Scripts, ScrollRestoration } from "react-router"
+
+import type { Route } from "./+types/root"
+
+import "./app.css"
+import "streamdown/styles.css"
+
+export const links: Route.LinksFunction = () => [
+	{ rel: "preconnect", href: "https://fonts.googleapis.com" },
+	{
+		rel: "preconnect",
+		href: "https://fonts.gstatic.com",
+		crossOrigin: "anonymous",
+	},
+	{
+		rel: "stylesheet",
+		href: "https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&display=swap",
+	},
+	{
+		rel: "icon",
+		href: "/favicon-light.svg",
+		type: "image/svg+xml",
+		media: "(prefers-color-scheme: light)",
+	},
+	{
+		rel: "icon",
+		href: "/favicon-dark.svg",
+		type: "image/svg+xml",
+		media: "(prefers-color-scheme: dark)",
+	},
+	{
+		rel: "icon",
+		href: "/favicon.ico",
+		sizes: "any",
+	},
+]
+
+export function Layout({ children }: { children: React.ReactNode }) {
+	return (
+		<html lang="en">
+			<head>
+				<meta charSet="utf-8" />
+				<meta name="viewport" content="width=device-width, initial-scale=1" />
+				<Meta />
+				<Links />
+			</head>
+			<body>
+				{children}
+				<ScrollRestoration />
+				<Scripts />
+			</body>
+		</html>
+	)
+}
+
+export default function App() {
+	return <Outlet />
+}
+
+export function ErrorBoundary({ error }: Route.ErrorBoundaryProps) {
+	let message = "Oops!"
+	let details = "An unexpected error occurred."
+	let stack: string | undefined
+
+	if (isRouteErrorResponse(error)) {
+		message = error.status === 404 ? "404" : "Error"
+		details =
+			error.status === 404 ? "The requested page could not be found." : error.statusText || details
+	} else if (import.meta.env.DEV && error && error instanceof Error) {
+		details = error.message
+		stack = error.stack
+	}
+
+	return (
+		<main className="flex flex-col items-center justify-center w-full h-full gap-4">
+			<h1 className="text-6xl font-semibold">{message}</h1>
+			<p className="text-stone-600 dark:text-stone-400">{details}</p>
+			<a href="/" className="mt-4 text-sm underline opacity-50 hover:opacity-75">
+				Back to home
+			</a>
+			{stack && (
+				<pre className="mt-8 w-full max-w-2xl p-4 overflow-x-auto text-xs bg-stone-100 dark:bg-stone-800 rounded-lg">
+					<code>{stack}</code>
+				</pre>
+			)}
+		</main>
+	)
+}

apps/waitlist-website/app/routes.ts

@@ -0,0 +1,6 @@
+import { type RouteConfig, index, route } from "@react-router/dev/routes"
+
+export default [
+	index("routes/home.tsx"),
+	route("privacy", "routes/privacy-policy.tsx"),
+] satisfies RouteConfig

apps/waitlist-website/app/routes/home.tsx

@@ -0,0 +1,395 @@
+import { AnimatePresence, motion } from "motion/react"
+import React, { useEffect, useLayoutEffect, useRef, useState } from "react"
+import { Link, useFetcher } from "react-router"
+import { Resend } from "resend"
+import { Streamdown } from "streamdown"
+
+import { ChatBox } from "~/chat/chat-box"
+import {
+	duplicateEmailMessage,
+	INITIAL_MESSAGES,
+	troubleMessage,
+	waitListJoinedMessage,
+	type Message,
+	type SystemMessage,
+	type UserMessage,
+} from "~/chat/message"
+import { useFakeStreaming } from "~/chat/use-fake-streaming"
+import {
+	AnimatedLogo,
+	AnimatedLogoState,
+	AnimatedLogoState as TAnimatedLogoState,
+} from "~/components/animated-logo"
+import { ProgressiveBlur } from "~/components/progressive-blur"
+
+import type { Route } from "./+types/home"
+
+const PAGE_TITLE = "Aelis - Next Generation AI Assistant"
+const PAGE_DESCRIPTION =
+	"Meet Aelis, a personal assistant that stays one step ahead of your day. Join the waitlist now."
+
+export function meta({}: Route.MetaArgs) {
+	return [
+		{ title: PAGE_TITLE },
+		{
+			name: "description",
+			content: PAGE_DESCRIPTION,
+		},
+		{ property: "og:title", content: PAGE_TITLE },
+		{ property: "og:description", content: PAGE_DESCRIPTION },
+		{ property: "og:image", content: "https://ael.is/social-media-preview.png" },
+		{ property: "og:url", content: "https://ael.is" },
+		{ property: "og:type", content: "website" },
+		{ name: "twitter:card", content: "summary_large_image" },
+		{ name: "twitter:title", content: PAGE_TITLE },
+		{ name: "twitter:description", content: PAGE_DESCRIPTION },
+		{ name: "twitter:image", content: "https://ael.is/social-media-preview.png" },
+	]
+}
+
+const FormError = {
+	Duplicate: "duplicate",
+	Resend: "resend",
+} as const
+
+export async function action({ request }: Route.ActionArgs) {
+	const formData = await request.formData()
+	const email = formData.get("email")
+
+	if (typeof email !== "string" || !isValidEmail(email)) {
+		return { error: "Invalid email" }
+	}
+
+	const resend = new Resend(process.env.RESEND_API_KEY)
+
+	const segmentId = "b80fb036-74a1-4f7d-bca5-2c035b696071"
+
+	const dup = await resend.contacts.get({
+		email,
+	})
+	if (dup.data) {
+		return { error: FormError.Duplicate }
+	}
+
+	const res = await resend.contacts.create({
+		email,
+		segments: [{ id: segmentId }],
+	})
+
+	if (res.error) {
+		console.log("Error adding contact to Resend:", res.error)
+		return { error: FormError.Resend, message: res.error.message }
+	}
+
+	await new Promise((resolve) => setTimeout(resolve, 1000))
+
+	const emailRes = await resend.emails.send({
+		from: "Aelis <no-reply@ael.is>",
+		to: email,
+		template: {
+			id: "waitlist-confirmation",
+		},
+	})
+
+	if (emailRes.error) {
+		// swallow the error since the user is already added to the waitlist, but log it for debugging
+		console.log("Error sending confirmation email:", emailRes.error)
+	}
+
+	return { email }
+}
+
+export default function Home() {
+	const [messages, setMessages] = useState<Message[]>(INITIAL_MESSAGES)
+	const [emailSent, setEmailSent] = useState("")
+	const [isAnimatingSend, setIsAnimatingSend] = useState(false)
+	const [logoState, setLogoState] = useState<TAnimatedLogoState>(AnimatedLogoState.Idle)
+	const chatBoxRef = useRef<HTMLDivElement>(null)
+	const fetcher = useFetcher()
+
+	useEffect(() => {
+		if (fetcher.data?.email && !isAnimatingSend) {
+			setMessages((messages) => [...messages, waitListJoinedMessage(fetcher.data.email)])
+		} else if (fetcher.data?.error) {
+			if (!isAnimatingSend) {
+				let errorMessage: SystemMessage
+				switch (fetcher.data.error) {
+					case FormError.Duplicate:
+						errorMessage = duplicateEmailMessage()
+						break
+					default: {
+						console.error(fetcher.data.error)
+						errorMessage = troubleMessage()
+						break
+					}
+				}
+				setMessages((messages) => [...messages, errorMessage])
+			}
+		}
+	}, [fetcher.data?.email, fetcher.data?.error, isAnimatingSend])
+
+	const insertEmailMessage = (email: string) => {
+		setEmailSent(email)
+		setIsAnimatingSend(true)
+		setLogoState(AnimatedLogoState.Loading)
+		setMessages((messages) => [
+			...messages,
+			{
+				role: "user",
+				message: email,
+				bubbleLayoutId: "test",
+			},
+		])
+
+		fetcher.submit({ email }, { method: "post" })
+	}
+
+	let chatBox: React.ReactNode
+	if (emailSent && isAnimatingSend) {
+		const chatBoxRect = chatBoxRef.current?.getBoundingClientRect()
+		const mainRect = chatBoxRef.current?.offsetParent?.getBoundingClientRect()
+		chatBox = (
+			<MorphingChatBox
+				chatBoxWidth={chatBoxRef.current?.offsetWidth ?? 0}
+				chatBoxHeight={chatBoxRef.current?.offsetHeight ?? 0}
+				chatBoxLeft={(chatBoxRect?.left ?? 0) - (mainRect?.left ?? 0)}
+				chatBoxTop={(chatBoxRect?.top ?? 0) - (mainRect?.top ?? 0)}
+				onAnimationEnd={() => {
+					setIsAnimatingSend(false)
+				}}
+			>
+				{emailSent}
+			</MorphingChatBox>
+		)
+	} else if (!emailSent) {
+		chatBox = (
+			<AnimatePresence>
+				{logoState === AnimatedLogoState.Idle && !emailSent && (
+					<motion.div
+						ref={chatBoxRef}
+						key="test"
+						className="w-full max-w-2xl absolute bottom-12 px-6 md:px-0 flex justify-center z-20"
+						initial={{ y: 100, opacity: 0 }}
+						animate={{ y: 0, opacity: 1 }}
+						transition={{ type: "spring", stiffness: 300, damping: 30, mass: 1.5 }}
+					>
+						<ChatBox
+							className="w-full max-w-2xl"
+							validate={isValidEmail}
+							disabled={fetcher.state === "submitting" || fetcher.state === "loading"}
+							onSubmit={insertEmailMessage}
+						/>
+					</motion.div>
+				)}
+			</AnimatePresence>
+		)
+	} else {
+		chatBox = null
+	}
+
+	return (
+		<main className="relative w-full h-full flex flex-col items-center justify-start gap-4 overflow-hidden">
+			<ProgressiveBlur className="absolute top-0 left-0 right-0 h-24 z-10" />
+			<AnimatedLogo
+				className="absolute top-4 md:top-8 size-10 z-20 cursor-pointer"
+				state={logoState}
+			/>
+			<MessageList
+				messages={messages}
+				showLastMessage={!isAnimatingSend}
+				onMessageStreamStart={() => {
+					setLogoState(AnimatedLogoState.Loading)
+				}}
+				onMessageStreamEnd={() => {
+					setLogoState(AnimatedLogoState.Idle)
+				}}
+			/>
+			{chatBox}
+			<ProgressiveBlur
+				direction="up"
+				className="absolute bottom-0 left-0 right-0 h-24 z-10 pointer-events-none"
+			/>
+			<footer className="absolute bottom-4 z-20">
+				<Link to="/privacy" className="text-xs opacity-50 underline">
+					Privacy policy
+				</Link>
+			</footer>
+		</main>
+	)
+}
+
+function MorphingChatBox({
+	chatBoxWidth,
+	chatBoxHeight,
+	chatBoxLeft,
+	chatBoxTop,
+	onAnimationEnd,
+	children,
+}: React.PropsWithChildren<{
+	chatBoxWidth: number
+	chatBoxHeight: number
+	chatBoxLeft: number
+	chatBoxTop: number
+	onAnimationEnd: () => void
+}>) {
+	const [targetWidth, setTargetWidth] = useState(-1)
+	const [targetHeight, setTargetHeight] = useState(-1)
+	const [targetCoords, setTargetCoords] = useState([0, 0])
+
+	useLayoutEffect(() => {
+		const bubble = document.getElementById("test")
+		if (bubble) {
+			const mainRect = bubble.closest("main")?.getBoundingClientRect()
+			const rect = bubble.getBoundingClientRect()
+			setTargetWidth(bubble.offsetWidth)
+			setTargetHeight(bubble.offsetHeight)
+			setTargetCoords([rect.left - (mainRect?.left ?? 0), rect.top - (mainRect?.top ?? 0)])
+		}
+	}, [])
+
+	if (targetWidth < 0 || targetHeight < 0) {
+		return null
+	}
+
+	return (
+		<motion.div
+			className="absolute rounded-lg bg-stone-100 dark:bg-stone-800 px-4 py-2 border border-stone-200 dark:border-stone-700"
+			initial={{
+				width: chatBoxWidth,
+				height: chatBoxHeight,
+				borderRadius: 8,
+				left: chatBoxLeft,
+				top: chatBoxTop,
+			}}
+			animate={{
+				width: targetWidth,
+				height: targetHeight,
+				borderTopLeftRadius: 100,
+				borderTopRightRadius: 100,
+				borderBottomRightRadius: 24,
+				borderBottomLeftRadius: 100,
+				left: targetCoords[0],
+				top: targetCoords[1],
+			}}
+			transition={{
+				left: { duration: 0.45, ease: [0.05, 0.8, 0.3, 1] },
+				top: { duration: 0.45, ease: [0.3, 0, 0.2, 1] },
+				width: { duration: 0.45, ease: [0.05, 0.8, 0.3, 1] },
+				height: { duration: 0.45, ease: [0.05, 0.8, 0.3, 1] },
+			}}
+			onAnimationComplete={onAnimationEnd}
+		>
+			{children}
+		</motion.div>
+	)
+}
+
+function MessageList({
+	messages,
+	showLastMessage,
+	onMessageStreamStart,
+	onMessageStreamEnd,
+}: {
+	messages: Message[]
+	showLastMessage: boolean
+	onMessageStreamStart: () => void
+	onMessageStreamEnd: () => void
+}) {
+	return (
+		<ul className="w-full flex flex-col gap-8 overflow-auto px-6 pt-20 md:px-0 md:pt-24 pb-34">
+			{messages.map((message, index) => (
+				<li
+					key={index}
+					className={`flex justify-center ${index === messages.length - 1 && !showLastMessage ? "invisible" : ""}`}
+				>
+					<MessageContent
+						message={message}
+						onMessageStreamStart={onMessageStreamStart}
+						onMessageStreamEnd={onMessageStreamEnd}
+					/>
+				</li>
+			))}
+		</ul>
+	)
+}
+
+function MessageContent({
+	message,
+	onMessageStreamStart,
+	onMessageStreamEnd,
+}: {
+	message: Message
+	onMessageStreamStart: () => void
+	onMessageStreamEnd: () => void
+}) {
+	switch (message.role) {
+		case "user":
+			return <UserMessageBubble message={message} />
+		case "system":
+			return (
+				<SystemMessageBubble
+					message={message}
+					onStreamStart={onMessageStreamStart}
+					onStreamEnd={onMessageStreamEnd}
+				/>
+			)
+	}
+}
+
+function UserMessageBubble({ message }: { message: UserMessage }) {
+	return (
+		<div className="w-full max-w-2xl flex justify-end">
+			<div
+				id={message.bubbleLayoutId}
+				className="rounded-[100px_100px_24px_100px] bg-stone-100 dark:bg-stone-800 border border-stone-200 dark:border-stone-700 px-4 py-2"
+			>
+				{message.message}
+			</div>
+		</div>
+	)
+}
+
+function SystemMessageBubble({
+	message,
+	onStreamStart,
+	onStreamEnd,
+}: {
+	message: SystemMessage
+	onStreamStart: () => void
+	onStreamEnd: () => void
+}) {
+	const { currentContent, isStreaming } = useFakeStreaming(message.message)
+	const ref = useRef<HTMLDivElement>(null)
+
+	useEffect(() => {
+		ref.current?.scrollIntoView({ behavior: "smooth", block: "end" })
+	}, [currentContent])
+
+	useEffect(() => {
+		if (isStreaming) {
+			onStreamStart()
+		} else {
+			onStreamEnd()
+		}
+	}, [isStreaming])
+
+	return (
+		<div ref={ref} className="w-full max-w-2xl flex justify-start font-serif text-lg scroll-mb-34">
+			<Streamdown
+				animated={{ animation: "slideUp" }}
+				isAnimating={isStreaming}
+				linkSafety={{ enabled: false }}
+				components={{
+					// @ts-expect-error
+					a: ({ className, ...props }) => <a className={`underline ${className}`} {...props} />,
+				}}
+			>
+				{currentContent}
+			</Streamdown>
+		</div>
+	)
+}
+
+function isValidEmail(value: string): boolean {
+	return /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(value)
+}

apps/waitlist-website/app/routes/privacy-policy.tsx

@@ -0,0 +1,246 @@
+import { Link } from "react-router"
+import { Streamdown } from "streamdown"
+
+import { AnimatedLogo, AnimatedLogoState } from "~/components/animated-logo"
+
+import type { Route } from "./+types/privacy-policy"
+
+export function meta({}: Route.MetaArgs) {
+	return [
+		{ title: "Privacy Policy — Aelis" },
+		{ name: "description", content: "Aelis privacy policy" },
+	]
+}
+
+export default function PrivacyPolicy() {
+	return (
+		<main className="relative max-w-2xl mx-auto px-6 py-16">
+			<Link to="/" className="block w-fit mb-8">
+				<AnimatedLogo className="size-10 pointer-events-none" state={AnimatedLogoState.Idle} />
+			</Link>
+			<Streamdown
+				isAnimating={false}
+				linkSafety={{ enabled: false }}
+				components={{
+					a: ({ className, ...props }) => <a className={`underline ${className}`} {...props} />,
+				}}
+			>
+				{POLICY}
+			</Streamdown>
+			<footer className="mt-16 pt-8 border-t border-stone-200 dark:border-stone-700">
+				<Link to="/" className="text-sm opacity-50 hover:opacity-75 underline">
+					Back to home
+				</Link>
+			</footer>
+		</main>
+	)
+}
+
+const POLICY = `# Privacy Policy
+
+**Last updated:** March 5, 2026
+
+This Privacy Policy describes how **Aelis** ("we", "us", or "our") collects, uses, and protects your personal information when you visit **https://ael.is** or interact with our services.
+
+If you do not agree with this Privacy Policy, please do not use the website.
+
+For any questions, contact: **[kenneth@nym.sh](mailto:kenneth@nym.sh)**
+
+---
+
+## 1. Information We Collect
+
+### Personal Information You Provide
+
+**In Short:** We collect personal information that you provide to us.
+
+We collect personal information that you voluntarily provide when you express interest in our services, contact us, or sign up for the waitlist.
+
+We collect your email address when you sign up for the waitlist so we can notify you when the product launches or provide related updates.
+
+### Personal Information Provided by You
+
+The personal information we collect may include:
+
+* email addresses
+
+You are responsible for ensuring the personal information you provide is accurate and up to date.
+
+### Sensitive Information
+
+We **do not collect or process sensitive personal information**.
+
+### Information From Third Parties
+
+We **do not collect personal information from third parties**.
+
+---
+
+## 2. How We Use Your Information
+
+We process your information for the following purposes:
+
+* To operate and maintain our services
+* To communicate with you about product updates and launch announcements
+* To send administrative information such as policy updates
+* To prevent fraud or abuse
+* To comply with legal obligations
+* To protect someone’s safety when necessary
+
+We only process personal information when we have a valid legal reason to do so.
+
+---
+
+## 3. Legal Bases for Processing (EU / UK)
+
+If you are located in the European Economic Area (EEA) or the United Kingdom, we rely on the following legal bases to process personal information:
+
+### Consent
+
+You have given permission for us to process your personal information for a specific purpose.
+
+### Contract
+
+Processing is necessary to provide services you requested.
+
+### Legal Obligations
+
+Processing is required to comply with applicable laws.
+
+### Vital Interests
+
+Processing is necessary to protect someone's safety.
+
+You may withdraw consent at any time by contacting us.
+
+---
+
+## 4. When and With Whom We Share Personal Information
+
+We may share your personal information in limited situations.
+
+### Service Providers
+
+We may share information with trusted service providers that help us operate our website or manage communications.
+
+### Business Transfers
+
+We may transfer information during negotiations of a merger, sale of assets, financing, or acquisition of our business.
+
+We **do not sell your personal information**.
+
+---
+
+## 5. How Long We Keep Your Information
+
+We retain personal information only as long as necessary to:
+
+* provide services
+* comply with legal obligations
+* resolve disputes
+* enforce agreements
+
+When we no longer need personal information, we delete or anonymize it where possible.
+
+---
+
+## 6. How We Keep Your Information Safe
+
+We implement reasonable technical and organizational safeguards designed to protect personal information.
+
+However, no electronic transmission or storage system is completely secure. We cannot guarantee absolute security.
+
+---
+
+## 7. Information From Minors
+
+Our services are **not intended for individuals under 18 years old**.
+
+We do not knowingly collect personal information from children. If we discover that we have collected such information, we will delete it.
+
+If you believe a child has provided personal information, contact **[kenneth@nym.sh](mailto:kenneth@nym.sh)**.
+
+---
+
+## 8. Your Privacy Rights
+
+Depending on your location, you may have rights regarding your personal information, including:
+
+* the right to access your data
+* the right to correct inaccurate data
+* the right to delete your data
+* the right to restrict processing
+* the right to data portability
+* the right to object to processing
+* the right to withdraw consent
+
+To exercise these rights, submit a request:
+
+https://app.termly.io/dsar/b8633d03-406f-4133-b16e-ded63e893997
+
+Or contact us at **[kenneth@nym.sh](mailto:kenneth@nym.sh)**.
+
+---
+
+## 9. Do Not Track (DNT)
+
+Many browsers include a **Do Not Track (DNT)** feature.
+
+Because there is currently no consistent standard for responding to DNT signals, we do not respond to them.
+
+---
+
+## 10. Global Privacy Control
+
+We recognize **Global Privacy Control (GPC)** signals.
+
+If your browser sends a GPC signal, we treat it as a request to opt out of the sale or sharing of personal information where applicable.
+
+More information: https://globalprivacycontrol.org
+
+---
+
+## 11. Privacy Rights in Other Regions
+
+Additional privacy rights may apply depending on your location, including:
+
+* European Economic Area (EEA)
+* United Kingdom
+* Switzerland
+* Canada
+* United States
+* Australia
+* New Zealand
+
+If you believe we are processing your personal information unlawfully, you may contact your local data protection authority.
+
+---
+
+## 12. Updates to This Privacy Policy
+
+We may update this Privacy Policy from time to time.
+
+When we do, we will update the **Last updated** date at the top of this document.
+
+We encourage users to review this Privacy Policy regularly.
+
+---
+
+## 13. Contact Information
+
+If you have questions or comments about this Privacy Policy, you may contact us:
+
+**Aelis**
+
+Email: **[kenneth@nym.sh](mailto:kenneth@nym.sh)**
+
+---
+
+## 14. Request Access, Update, or Deletion
+
+Depending on applicable law, you may request access to, correction of, or deletion of your personal information.
+
+Email:
+
+**[kenneth@nym.sh](mailto:kenneth@nym.sh)**
+`

apps/waitlist-website/fly.toml

@@ -0,0 +1,22 @@
+# fly.toml app configuration file generated for aelis-waitlist-website on 2026-03-08T01:11:12Z
+#
+# See https://fly.io/docs/reference/configuration/ for information about how to use this file.
+#
+
+app = 'aelis-waitlist-website'
+primary_region = 'lhr'
+
+[build]
+
+[http_service]
+  internal_port = 3000
+  force_https = true
+  auto_stop_machines = 'stop'
+  auto_start_machines = true
+  min_machines_running = 0
+  processes = ['app']
+
+[[vm]]
+  memory = '1gb'
+  cpus = 1
+  memory_mb = 1024

apps/waitlist-website/package.json

@@ -0,0 +1,37 @@
+{
+	"name": "waitlist-website",
+	"private": true,
+	"type": "module",
+	"scripts": {
+		"build": "react-router build",
+		"dev": "react-router dev",
+		"start": "react-router-serve ./build/server/index.js",
+		"typecheck": "react-router typegen && tsc"
+	},
+	"dependencies": {
+		"@react-router/node": "7.12.0",
+		"@react-router/serve": "7.12.0",
+		"clsx": "^2.1.1",
+		"isbot": "^5.1.31",
+		"lottie-react": "^2.4.1",
+		"lucide-react": "^0.577.0",
+		"motion": "^12.35.0",
+		"react": "^19.2.4",
+		"react-aria-components": "^1.16.0",
+		"react-dom": "^19.2.4",
+		"react-router": "7.12.0",
+		"resend": "^6.9.3",
+		"streamdown": "^2.4.0"
+	},
+	"devDependencies": {
+		"@react-router/dev": "7.12.0",
+		"@tailwindcss/vite": "^4.1.13",
+		"@types/node": "^22",
+		"@types/react": "^19.2.7",
+		"@types/react-dom": "^19.2.3",
+		"tailwindcss": "^4.1.13",
+		"typescript": "^5.9.2",
+		"vite": "^7.1.7",
+		"vite-tsconfig-paths": "^5.1.4"
+	}
+}

apps/waitlist-website/public/favicon-dark.svg

@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg width="100%" height="100%" viewBox="0 0 1667 1667" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" xmlns:serif="http://www.serif.com/" style="fill-rule:evenodd;clip-rule:evenodd;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:1.5;"><rect id="dark" x="0" y="0" width="1666.67" height="1666.67" style="fill:none;"/><path d="M943.75,642.086c318.648,183.972 527.874,419.028 466.934,524.581c-60.941,105.552 -369.119,41.885 -687.767,-142.086c-318.649,-183.972 -527.875,-419.029 -466.934,-524.581c60.941,-105.552 369.119,-41.886 687.767,142.086Z" style="fill:none;stroke:#e7e5e4;stroke-width:62.5px;"/><path d="M722.917,642.086c318.648,-183.972 626.826,-247.638 687.767,-142.086c60.94,105.552 -148.286,340.609 -466.934,524.581c-318.648,183.971 -626.826,247.638 -687.767,142.086c-60.941,-105.553 148.285,-340.609 466.934,-524.581Z" style="fill:none;stroke:#e7e5e4;stroke-width:62.5px;"/></svg>

apps/waitlist-website/public/favicon-light.svg

@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg width="100%" height="100%" viewBox="0 0 1667 1667" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" xmlns:serif="http://www.serif.com/" style="fill-rule:evenodd;clip-rule:evenodd;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:1.5;"><rect id="light" x="0" y="0" width="1666.67" height="1666.67" style="fill:none;"/><g id="light1" serif:id="light"><path d="M943.75,642.086c318.648,183.972 527.874,419.028 466.934,524.581c-60.941,105.552 -369.119,41.885 -687.767,-142.086c-318.649,-183.972 -527.875,-419.029 -466.934,-524.581c60.941,-105.552 369.119,-41.886 687.767,142.086Z" style="fill:none;stroke:#1c1917;stroke-width:62.5px;"/><path d="M722.917,642.086c318.648,-183.972 626.826,-247.638 687.767,-142.086c60.94,105.552 -148.286,340.609 -466.934,524.581c-318.648,183.971 -626.826,247.638 -687.767,142.086c-60.941,-105.553 148.285,-340.609 466.934,-524.581Z" style="fill:none;stroke:#1c1917;stroke-width:62.5px;"/></g></svg>

apps/waitlist-website/public/robots.txt

@@ -0,0 +1,4 @@
+User-agent: *
+Allow: /
+
+Sitemap: https://ael.is/sitemap.xml

apps/waitlist-website/public/sitemap.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+	<url>
+		<loc>https://ael.is/</loc>
+	</url>
+	<url>
+		<loc>https://ael.is/privacy</loc>
+	</url>
+</urlset>

apps/waitlist-website/react-router.config.ts

@@ -0,0 +1,7 @@
+import type { Config } from "@react-router/dev/config"
+
+export default {
+	// Config options...
+	// Server-side render by default, to enable SPA mode set this to `false`
+	ssr: true,
+} satisfies Config

apps/waitlist-website/tsconfig.json

@@ -0,0 +1,22 @@
+{
+	"include": ["**/*", "**/.server/**/*", "**/.client/**/*", ".react-router/types/**/*"],
+	"compilerOptions": {
+		"lib": ["DOM", "DOM.Iterable", "ES2022"],
+		"types": ["node", "vite/client"],
+		"target": "ES2022",
+		"module": "ES2022",
+		"moduleResolution": "bundler",
+		"jsx": "react-jsx",
+		"rootDirs": [".", "./.react-router/types"],
+		"baseUrl": ".",
+		"paths": {
+			"~/*": ["./app/*"]
+		},
+		"esModuleInterop": true,
+		"verbatimModuleSyntax": true,
+		"noEmit": true,
+		"resolveJsonModule": true,
+		"skipLibCheck": true,
+		"strict": true
+	}
+}

apps/waitlist-website/vite.config.ts

@@ -0,0 +1,11 @@
+import { reactRouter } from "@react-router/dev/vite"
+import tailwindcss from "@tailwindcss/vite"
+import { defineConfig } from "vite"
+import tsconfigPaths from "vite-tsconfig-paths"
+
+export default defineConfig({
+	plugins: [tailwindcss(), reactRouter(), tsconfigPaths()],
+	ssr: {
+		noExternal: ["lottie-react"],
+	},
+})

docs/architecture-draft.md

@@ -16,8 +16,8 @@ Examples of feed items:
 ## Design Principles
 
 1. **Extensibility**: The core must support different data sources, including third-party sources.
-2. **Separation of concerns**: Core handles data only. UI rendering is a separate system.
-3. **Parallel execution**: Sources run in parallel; no inter-source dependencies.
+2. **Separation of concerns**: Core handles data and UI description. The client is a thin renderer.
+3. **Dependency graph**: Sources declare dependencies on other sources. The engine resolves the graph and runs independent sources in parallel.
 4. **Graceful degradation**: Failed sources are skipped; partial results are returned.
 
 ## Architecture
@@ -25,26 +25,28 @@ Examples of feed items:
 ```
 ┌─────────────────────────────────────────────────────────────┐
 │                         Backend                              │
-│  ┌─────────────┐    ┌─────────────┐    ┌─────────────────┐  │
-│  │  aris-core  │    │   Sources   │    │  UI Registry    │  │
-│  │             │    │  (plugins)  │    │  (schemas from  │  │
-│  │ - Reconciler│◄───│ - Calendar  │    │   third parties)│  │
-│  │ - Context   │    │ - Weather   │    │                 │  │
-│  │ - FeedItem  │    │ - Spotify   │    │                 │  │
-│  └─────────────┘    └─────────────┘    └─────────────────┘  │
-│         │                                      │             │
-│         ▼                                      ▼             │
-│    Feed (data only)                    UI Schemas (JSON)     │
+│  ┌─────────────┐    ┌─────────────┐                         │
+│  │  aris-core  │    │   Sources   │                         │
+│  │             │    │  (plugins)  │                         │
+│  │ - FeedEngine│◄───│ - Calendar  │                         │
+│  │ - Context   │    │ - Weather   │                         │
+│  │ - FeedItem  │    │ - TfL       │                         │
+│  │ - Actions   │    │ - Spotify   │                         │
+│  └─────────────┘    └─────────────┘                         │
+│         │                                                    │
+│         ▼                                                    │
+│    Feed items (data + ui trees + slots)                      │
 └─────────────────────────────────────────────────────────────┘
-                    │                           │
-                    ▼                           ▼
+                    │
+                    ▼ (WebSocket / JSON-RPC)
 ┌─────────────────────────────────────────────────────────────┐
-│                        Frontend                              │
+│                    Client (React Native)                      │
 │  ┌──────────────────────────────────────────────────────┐   │
-│  │  Renderer                                             │   │
-│  │  - Receives feed items                                │   │
-│  │  - Fetches UI schema by item type                     │   │
-│  │  - Renders using json-render or similar               │   │
+│  │  json-render + twrnc component map                    │   │
+│  │  - Receives feed items with ui trees                  │   │
+│  │  - Renders using registered RN components + twrnc     │   │
+│  │  - User interactions trigger source actions           │   │
+│  │  - Bespoke native components for rich interactions    │   │
 │  └──────────────────────────────────────────────────────┘   │
 └─────────────────────────────────────────────────────────────┘
 ```
@@ -54,15 +56,16 @@ Examples of feed items:
 The core is responsible for:
 
 - Defining the context and feed item interfaces
-- Providing a reconciler that orchestrates data sources
+- Providing a `FeedEngine` that orchestrates sources via a dependency graph
 - Returning a flat list of prioritized feed items
+- Routing action execution to the correct source
 
 ### Key Concepts
 
-- **Context**: Time and location (with accuracy) passed to all sources
-- **FeedItem**: Has an ID (source-generated, stable), type, priority, timestamp, and JSON-serializable data
-- **DataSource**: Interface that third parties implement to provide feed items
-- **Reconciler**: Orchestrates sources, runs them in parallel, returns items and any errors
+- **Context**: Time and location (with accuracy) passed to all sources. Sources can contribute to context (e.g., location source provides coordinates, weather source provides conditions).
+- **FeedItem**: Has an ID (source-generated, stable), type, timestamp, JSON-serializable data, optional actions, an optional `ui` tree, and optional `slots` for LLM-fillable content.
+- **FeedSource**: Interface that first and third parties implement to provide context, feed items, and actions. Uses reverse-domain IDs (e.g., `aris.weather`, `com.spotify`).
+- **FeedEngine**: Orchestrates sources respecting their dependency graph, runs independent sources in parallel, returns items and any errors. Routes action execution to the correct source.
 
 ## Data Sources
 
@@ -71,10 +74,13 @@ Key decisions:
 - Sources receive the full context and decide internally what to use
 - Each source returns a single item type (e.g., separate "Calendar Source" and "Location Suggestion Source" rather than a combined "Google Source")
 - Sources live in separate packages, not in the core
+- Sources declare dependencies on other sources (e.g., weather depends on location)
 - Sources are responsible for:
   - Transforming their domain data into feed items
   - Assigning priority based on domain logic (e.g., "event starting in 10 minutes" = high priority)
   - Returning empty arrays when nothing is relevant
+  - Providing a `ui` tree for each feed item
+  - Declaring and handling actions (e.g., RSVP, complete task, play/pause)
 
 ### Configuration
 
@@ -83,28 +89,323 @@ Configuration is passed at source registration time, not per reconcile call. Sou
 ## Feed Output
 
 - Flat list of `FeedItem` objects
-- No UI information (no icons, card types, etc.)
+- Items carry data, an optional `ui` field describing their layout, and optional `slots` for LLM enhancement
 - Items are a discriminated union by `type` field
-- Reconciler sorts by priority; can act as tiebreaker
 
-## UI Rendering (Separate from Core)
+## UI Rendering: Server-Driven UI
 
-The core does not handle UI. For extensible third-party UI:
+The UI for feed items is **server-driven**. Sources describe how their items look using a JSON tree (the `ui` field on `FeedItem`). The client renders these trees using [json-render](https://json-render.dev/) with a registered set of React Native components styled via [twrnc](https://github.com/jaredh159/tailwind-react-native-classnames).
 
-1. Third-party apps register their UI schemas through the backend (UI Registry)
-2. Frontend fetches UI schemas from the backend
-3. Frontend matches feed items to schemas by `type` and renders accordingly
+### How it works
 
-This approach:
+1. Sources return feed items with a `ui` field — a JSON tree describing the card layout using Tailwind class strings.
+2. The client passes a component map to json-render. Each component wraps a React Native primitive and resolves `className` via twrnc.
+3. json-render walks the tree and renders native components. twrnc parses Tailwind classes at runtime — no build step, arbitrary values work.
+4. User interactions (tap, etc.) map to source actions via the `actions` field on `FeedItem`. The client sends action requests to the backend, which routes them to the correct source via `FeedEngine.executeAction()`.
 
-- Keeps the core focused on data
-- Works across platforms (web, React Native)
-- Avoids the need for third parties to inject code into the app
-- Uses a json-render style approach for declarative UI from JSON schemas
+### Styling
 
-Reference: https://github.com/vercel-labs/json-render
+- Sources use Tailwind CSS class strings via the `className` prop (e.g., `"p-4 bg-white dark:bg-black rounded-xl"`).
+- twrnc resolves classes to React Native style objects at runtime. Supports arbitrary values (`mt-[31px]`, `bg-[#eaeaea]`), dark mode (`dark:bg-black`), and platform prefixes (`ios:pt-4 android:pt-2`).
+- Custom colors and spacing are configured via `tailwind.config.js` on the client.
+- No compile-time constraint — all styles resolve at runtime.
+
+### Two tiers of UI
+
+- **Server-driven (default):** Any source can return a `ui` tree. Covers most cards — weather, tasks, alerts, package tracking, news, etc. Simple interactions go through source actions. This is the default path for both first-party and third-party sources.
+- **Bespoke native:** For cards that need rich client interaction (gestures, animations, real-time updates), a native React Native component is registered in the json-render component map and referenced by type. Third parties that need this level of richness work with the ARIS team to get it integrated.
+
+### Why server-driven
+
+- Feed items are inherently server-driven — the data comes from sources on the backend. Attaching the layout alongside the data is a natural extension.
+- Card designs can be updated without shipping an app update.
+- Third-party sources can ship their own UI without bundling anything new into the app.
+
+Reference: https://json-render.dev/
+
+## Feed Items with UI and Slots
+
+> Note: the codebase has evolved since the sections above. The engine now uses a dependency graph with topological ordering (`FeedEngine`, `FeedSource`), not the parallel reconciler described above. The `priority` field is being replaced by post-processing (see the ideas doc). This section describes the UI and enhancement architecture going forward.
+
+Feed items carry an optional `ui` field containing a json-render tree, and an optional `slots` field for LLM-fillable content.
+
+```typescript
+interface FeedItem<TType, TData> {
+  id: string
+  type: TType
+  timestamp: Date
+  data: TData
+  ui?: JsonRenderNode
+  slots?: Record<string, Slot>
+}
+
+interface Slot {
+  /** Tells the LLM what this slot wants — the source writes this */
+  description: string
+  /** LLM-filled text content, null until enhanced */
+  content: string | null
+}
+```
+
+### How it works
+
+The source produces the item with a UI tree and empty slots:
+
+```typescript
+// Weather source produces:
+{
+  id: "weather-current-123",
+  type: "weather-current",
+  data: { temperature: 18, condition: "cloudy" },
+  ui: {
+    component: "VStack",
+    children: [
+      { component: "WeatherHeader", props: { temp: 18, condition: "cloudy" } },
+      { component: "Slot", props: { name: "insight" } },
+      { component: "HourlyChart", props: { hours: [...] } },
+      { component: "Slot", props: { name: "cross-source" } },
+    ]
+  },
+  slots: {
+    "insight": {
+      description: "A short contextual insight about the current weather and how it affects the user's day",
+      content: null
+    },
+    "cross-source": {
+      description: "Connection between weather and the user's calendar events or plans",
+      content: null
+    }
+  }
+}
+```
+
+The LLM enhancement harness fills `content`:
+
+```typescript
+slots: {
+  "insight": {
+    description: "...",
+    content: "Rain after 3pm — grab a jacket before your walk"
+  },
+  "cross-source": {
+    description: "...",
+    content: "Should be dry by 7pm for your dinner at The Ivy"
+  }
+}
+```
+
+The client renders the `ui` tree. When it hits a `Slot` node, it looks up `slots[name].content`. If non-null, render the text. If null, render nothing.
+
+### Separation of concerns
+
+- **Sources** own the UI layout and declare what slots exist with descriptions.
+- **The LLM** fills slot content. It doesn't know about layout or positioning.
+- **The client** renders the UI tree and resolves slots to their content.
+
+Sources define the prompt for each slot via the `description` field. The harness doesn't need to know what slots any source type has — it reads them dynamically from the items.
+
+Each source defines its own slots. The harness handles them automatically — no central registry needed.
+
+## Enhancement Harness
+
+The LLM enhancement harness fills slots and produces synthetic feed items. It runs reactively — triggered by context changes, not by a timer.
+
+### Execution model
+
+```
+FeedEngine.refresh()
+  → sources produce items with ui + empty slots
+         ↓
+Fast path (rule-based post-processors, <10ms)
+  → group, dedup, affinity, time-adjust
+  → merge LAST cached slot fills + synthetic items
+  → return feed to UI immediately
+         ↓
+Background: has context changed since last LLM run?
+  (hash of: item IDs + data + slot descriptions + user memory)
+         ↓
+No  → done, cache is still valid
+Yes → run LLM harness async
+      → fill slots + generate synthetic items
+      → cache result
+      → push updated feed to UI via WebSocket
+```
+
+The user never waits for the LLM. They see the feed instantly with the previous enhancement applied. If the LLM produces new slot content or synthetic items, the feed updates in place.
+
+### LLM input
+
+The harness serializes items with their unfilled slots into a single prompt. Items without slots are excluded. The LLM sees everything at once and fills whatever slots are relevant.
+
+```typescript
+function buildHarnessInput(
+  items: FeedItem[],
+  context: AgentContext,
+): HarnessInput {
+  const itemsWithSlots = items
+    .filter(item => item.slots && Object.keys(item.slots).length > 0)
+    .map(item => ({
+      id: item.id,
+      type: item.type,
+      data: item.data,
+      slots: Object.fromEntries(
+        Object.entries(item.slots!).map(
+          ([name, slot]) => [name, slot.description]
+        )
+      ),
+    }))
+
+  return {
+    items: itemsWithSlots,
+    userMemory: context.preferences,
+    currentTime: new Date().toISOString(),
+  }
+}
+```
+
+The LLM sees:
+
+```json
+{
+  "items": [
+    {
+      "id": "weather-current-123",
+      "type": "weather-current",
+      "data": { "temperature": 18, "condition": "cloudy" },
+      "slots": {
+        "insight": "A short contextual insight about the current weather and how it affects the user's day",
+        "cross-source": "Connection between weather and the user's calendar events or plans"
+      }
+    },
+    {
+      "id": "calendar-event-456",
+      "type": "calendar-event",
+      "data": { "title": "Dinner at The Ivy", "startTime": "19:00", "location": "The Ivy, West St" },
+      "slots": {
+        "context": "Background on this event, attendees, or previous meetings with these people",
+        "logistics": "Travel time, parking, directions to the venue",
+        "weather": "Weather conditions relevant to this event's time and location"
+      }
+    }
+  ],
+  "userMemory": { "commute": "victoria-line", "preference.walking_distance": "1 mile" },
+  "currentTime": "2025-02-26T14:30:00Z"
+}
+```
+
+### LLM output
+
+A flat map of item ID → slot name → text content. Slots left null are unfilled.
+
+```json
+{
+  "slotFills": {
+    "weather-current-123": {
+      "insight": "Rain after 3pm — grab a jacket before your walk",
+      "cross-source": "Should be dry by 7pm for your dinner at The Ivy"
+    },
+    "calendar-event-456": {
+      "context": null,
+      "logistics": "20-minute walk from home — leave by 18:40",
+      "weather": "Rain clears by evening, you'll be fine"
+    }
+  },
+  "syntheticItems": [
+    {
+      "id": "briefing-morning",
+      "type": "briefing",
+      "data": {},
+      "ui": { "component": "Text", "props": { "text": "Light afternoon — just your dinner at 7. Rain clears by then." } }
+    }
+  ],
+  "suppress": [],
+  "rankingHints": {}
+}
+```
+
+### Enhancement manager
+
+One per user, living in the `FeedEngineManager` on the backend:
+
+```typescript
+class EnhancementManager {
+  private cache: EnhancementResult | null = null
+  private lastInputHash: string | null = null
+  private running = false
+
+  async enhance(
+    items: FeedItem[],
+    context: AgentContext,
+  ): Promise<EnhancementResult> {
+    const hash = computeHash(items, context)
+
+    if (hash === this.lastInputHash && this.cache) {
+      return this.cache
+    }
+
+    if (this.running) {
+      return this.cache ?? emptyResult()
+    }
+
+    this.running = true
+    this.runHarness(items, context)
+      .then(result => {
+        this.cache = result
+        this.lastInputHash = hash
+        this.notifySubscribers(result)
+      })
+      .finally(() => { this.running = false })
+
+    return this.cache ?? emptyResult()
+  }
+}
+
+interface EnhancementResult {
+  slotFills: Record<string, Record<string, string | null>>
+  syntheticItems: FeedItem[]
+  suppress: string[]
+  rankingHints: Record<string, number>
+}
+```
+
+### Merging
+
+After the harness runs, the engine merges slot fills into items:
+
+```typescript
+function mergeEnhancement(
+  items: FeedItem[],
+  result: EnhancementResult,
+): FeedItem[] {
+  return items.map(item => {
+    const fills = result.slotFills[item.id]
+    if (!fills || !item.slots) return item
+
+    const mergedSlots = { ...item.slots }
+    for (const [name, content] of Object.entries(fills)) {
+      if (name in mergedSlots && content !== null) {
+        mergedSlots[name] = { ...mergedSlots[name], content }
+      }
+    }
+
+    return { ...item, slots: mergedSlots }
+  })
+}
+```
+
+### Cost control
+
+- **Hash-based cache gate.** Most refreshes reuse the cached result.
+- **Debounce.** Rapid context changes (location updates) settle before triggering a run.
+- **Skip inactive users.** Don't run if the user hasn't opened the app in 2+ hours.
+- **Exclude slotless items.** Only items with slots are sent to the LLM.
+- **Text-only output.** Slots produce strings, not UI trees — fewer output tokens, less variance.
 
 ## Open Questions
 
-- Exact schema format for UI registry
-- How third parties authenticate/register their sources and UI schemas
+- How third parties authenticate/register their sources
+- Exact set of React Native components exposed in the json-render component map
+- Validation/sandboxing of third-party ui trees
+- How synthetic items define their UI (full json-render tree vs. registered component)
+- Should slots support rich content (json-render nodes) in the future, or stay text-only?
+- How to handle slot content that references other items (e.g., "your dinner at The Ivy" linking to the calendar card)

docs/feed-source-actions-spec.md

@@ -125,7 +125,7 @@ interface FeedSource<TItem extends FeedItem = FeedItem> {
 
 ### Changes to FeedItem
 
-One optional field added.
+Optional fields added for actions, server-driven UI, and LLM slots.
 
 ```typescript
 interface FeedItem<
@@ -140,6 +140,12 @@ interface FeedItem<
 
 	/** Actions the user can take on this item. */
 	actions?: readonly ItemAction[]
+
+	/** Server-driven UI tree rendered by json-render on the client. */
+	ui?: JsonRenderNode
+
+	/** Named slots for LLM-fillable content. See architecture-draft.md. */
+	slots?: Record<string, Slot>
 }
 ```
 
@@ -222,6 +228,25 @@ class SpotifySource implements FeedSource<SpotifyFeedItem> {
 					{ actionId: "skip-track" },
 					{ actionId: "like-track", params: { trackId: track.id } },
 				],
+				ui: {
+					type: "View",
+					className: "flex-row items-center p-3 gap-3 bg-white dark:bg-black rounded-xl",
+					children: [
+						{
+							type: "Image",
+							source: { uri: track.albumArt },
+							className: "w-12 h-12 rounded-lg",
+						},
+						{
+							type: "View",
+							className: "flex-1",
+							children: [
+								{ type: "Text", className: "font-semibold text-black dark:text-white", text: track.name },
+								{ type: "Text", className: "text-sm text-gray-500 dark:text-gray-400", text: track.artist },
+							],
+						},
+					],
+				},
 			},
 		]
 	}
@@ -236,6 +261,8 @@ class SpotifySource implements FeedSource<SpotifyFeedItem> {
 4. `FeedSource.listActions()` is a required method returning `Record<string, ActionDefinition>` (empty record if no actions)
 5. `FeedSource.executeAction()` is a required method (no-op for sources without actions)
 6. `FeedItem.actions` is an optional readonly array of `ItemAction`
+6b. `FeedItem.ui` is an optional json-render tree describing server-driven UI
+6c. `FeedItem.slots` is an optional record of named LLM-fillable slots
 7. `FeedEngine.executeAction()` routes to correct source, returns `ActionResult`
 8. `FeedEngine.listActions()` aggregates actions from all sources
 9. Existing tests pass unchanged (all changes are additive)

packages/aris-core/src/context-bridge.ts

@@ -1,8 +1,10 @@
-import type { Context } from "./context"
+import type { ContextEntry } from "./context"
 import type { ContextProvider } from "./context-provider"
 
+import { contextKey } from "./context"
+
 interface ContextUpdatable {
-	pushContextUpdate(update: Partial<Context>): void
+	pushContextUpdate(entries: readonly ContextEntry[]): void
 }
 
 export interface ProviderError {
@@ -54,7 +56,7 @@ export class ContextBridge {
 		this.providers.set(provider.key, provider as ContextProvider)
 
 		const cleanup = provider.onUpdate((value) => {
-			this.controller.pushContextUpdate({ [provider.key]: value })
+			this.controller.pushContextUpdate([[contextKey(provider.key), value]])
 		})
 		this.cleanups.push(cleanup)
 
@@ -67,7 +69,7 @@ export class ContextBridge {
 	 * Returns errors from providers that failed to fetch.
 	 */
 	async refresh(): Promise<RefreshResult> {
-		const updates: Partial<Context> = {}
+		const collected: ContextEntry[] = []
 		const errors: ProviderError[] = []
 
 		const entries = Array.from(this.providers.entries())
@@ -78,7 +80,7 @@ export class ContextBridge {
 		entries.forEach(([key], i) => {
 			const result = results[i]
 			if (result?.status === "fulfilled") {
-				updates[key] = result.value
+				collected.push([contextKey(key), result.value])
 			} else if (result?.status === "rejected") {
 				errors.push({
 					key,
@@ -87,7 +89,7 @@ export class ContextBridge {
 			}
 		})
 
-		this.controller.pushContextUpdate(updates)
+		this.controller.pushContextUpdate(collected)
 
 		return { errors }
 	}

packages/aris-core/src/context.test.ts

@@ -0,0 +1,184 @@
+import { describe, expect, test } from "bun:test"
+
+import type { ContextKey } from "./context"
+
+import { Context, contextKey } from "./context"
+
+interface Weather {
+	temperature: number
+}
+
+interface NextEvent {
+	title: string
+}
+
+const WeatherKey: ContextKey<Weather> = contextKey("aris.weather", "current")
+const NextEventKey: ContextKey<NextEvent> = contextKey("aris.google-calendar", "nextEvent")
+
+describe("Context", () => {
+	describe("get", () => {
+		test("returns undefined for missing key", () => {
+			const ctx = new Context()
+			expect(ctx.get(WeatherKey)).toBeUndefined()
+		})
+
+		test("returns value for exact key match", () => {
+			const ctx = new Context()
+			const weather: Weather = { temperature: 20 }
+			ctx.set([[WeatherKey, weather]])
+
+			expect(ctx.get(WeatherKey)).toEqual(weather)
+		})
+
+		test("distinguishes keys with different parts", () => {
+			const ctx = new Context()
+			ctx.set([
+				[WeatherKey, { temperature: 20 }],
+				[NextEventKey, { title: "Standup" }],
+			])
+
+			expect(ctx.get(WeatherKey)).toEqual({ temperature: 20 })
+			expect(ctx.get(NextEventKey)).toEqual({ title: "Standup" })
+		})
+
+		test("last write wins for same key", () => {
+			const ctx = new Context()
+			ctx.set([[WeatherKey, { temperature: 20 }]])
+			ctx.set([[WeatherKey, { temperature: 25 }]])
+
+			expect(ctx.get(WeatherKey)).toEqual({ temperature: 25 })
+		})
+	})
+
+	describe("find", () => {
+		test("returns empty array when no keys match", () => {
+			const ctx = new Context()
+			expect(ctx.find(WeatherKey)).toEqual([])
+		})
+
+		test("returns exact match as single result", () => {
+			const ctx = new Context()
+			ctx.set([[NextEventKey, { title: "Standup" }]])
+
+			const results = ctx.find(NextEventKey)
+			expect(results).toHaveLength(1)
+			expect(results[0]!.value).toEqual({ title: "Standup" })
+		})
+
+		test("prefix match returns multiple instances", () => {
+			const workKey = contextKey<NextEvent>("aris.google-calendar", "nextEvent", {
+				account: "work",
+			})
+			const personalKey = contextKey<NextEvent>("aris.google-calendar", "nextEvent", {
+				account: "personal",
+			})
+
+			const ctx = new Context()
+			ctx.set([
+				[workKey, { title: "Sprint Planning" }],
+				[personalKey, { title: "Dentist" }],
+			])
+
+			const prefix = contextKey<NextEvent>("aris.google-calendar", "nextEvent")
+			const results = ctx.find(prefix)
+
+			expect(results).toHaveLength(2)
+			const titles = results.map((r) => r.value.title).sort()
+			expect(titles).toEqual(["Dentist", "Sprint Planning"])
+		})
+
+		test("prefix match includes exact match and longer keys", () => {
+			const baseKey = contextKey<NextEvent>("aris.google-calendar", "nextEvent")
+			const instanceKey = contextKey<NextEvent>("aris.google-calendar", "nextEvent", {
+				account: "work",
+			})
+
+			const ctx = new Context()
+			ctx.set([
+				[baseKey, { title: "Base" }],
+				[instanceKey, { title: "Instance" }],
+			])
+
+			const results = ctx.find(baseKey)
+			expect(results).toHaveLength(2)
+		})
+
+		test("does not match keys that share a string prefix but differ at segment boundary", () => {
+			const keyA = contextKey<string>("aris.calendar", "next")
+			const keyB = contextKey<string>("aris.calendar", "nextEvent")
+
+			const ctx = new Context()
+			ctx.set([
+				[keyA, "a"],
+				[keyB, "b"],
+			])
+
+			const results = ctx.find(keyA)
+			expect(results).toHaveLength(1)
+			expect(results[0]!.value).toBe("a")
+		})
+
+		test("object key parts with different property order match", () => {
+			const key1 = contextKey<string>("source", "ctx", { b: 2, a: 1 })
+			const key2 = contextKey<string>("source", "ctx", { a: 1, b: 2 })
+
+			const ctx = new Context()
+			ctx.set([[key1, "value"]])
+
+			// Exact match via get should work regardless of property order
+			expect(ctx.get(key2)).toBe("value")
+
+			// find with the reordered key as prefix should also match
+			const prefix = contextKey<string>("source", "ctx")
+			const results = ctx.find(prefix)
+			expect(results).toHaveLength(1)
+		})
+
+		test("single-segment prefix matches all keys starting with that segment", () => {
+			const ctx = new Context()
+			ctx.set([
+				[contextKey("aris.weather", "current"), { temperature: 20 }],
+				[contextKey("aris.weather", "forecast"), { high: 25 }],
+				[contextKey("aris.calendar", "nextEvent"), { title: "Meeting" }],
+			])
+
+			const results = ctx.find(contextKey("aris.weather"))
+			expect(results).toHaveLength(2)
+		})
+
+		test("does not match shorter keys", () => {
+			const ctx = new Context()
+			ctx.set([[contextKey("aris.weather"), "short"]])
+
+			const results = ctx.find(contextKey("aris.weather", "current"))
+			expect(results).toHaveLength(0)
+		})
+
+		test("numeric key parts match correctly", () => {
+			const ctx = new Context()
+			ctx.set([
+				[contextKey("source", 1, "data"), "one"],
+				[contextKey("source", 2, "data"), "two"],
+			])
+
+			const results = ctx.find(contextKey("source", 1))
+			expect(results).toHaveLength(1)
+			expect(results[0]!.value).toBe("one")
+		})
+	})
+
+	describe("size", () => {
+		test("returns 0 for empty context", () => {
+			expect(new Context().size).toBe(0)
+		})
+
+		test("reflects number of entries", () => {
+			const ctx = new Context()
+			ctx.set([
+				[WeatherKey, { temperature: 20 }],
+				[NextEventKey, { title: "Standup" }],
+			])
+			expect(ctx.size).toBe(2)
+		})
+	})
+})

packages/aris-core/src/context.ts

@@ -1,46 +1,128 @@
 /**
- * Branded type for type-safe context keys.
+ * Tuple-keyed context system inspired by React Query's query keys.
  *
- * Each package defines its own keys with associated value types:
- * ```ts
- * const LocationKey: ContextKey<Location> = contextKey("location")
- * ```
+ * Context keys are arrays that form a hierarchy. Sources write to specific
+ * keys (e.g., ["aris.google-calendar", "nextEvent", { account: "work" }])
+ * and consumers can query by exact match or prefix match to get all values
+ * of a given type across source instances.
  */
-export type ContextKey<T> = string & { __contextValue?: T }
 
-/**
- * Creates a typed context key.
- *
- * @example
- * ```ts
- * interface Location { lat: number; lng: number; accuracy: number }
- * const LocationKey: ContextKey<Location> = contextKey("location")
- * ```
- */
-export function contextKey<T>(key: string): ContextKey<T> {
-	return key as ContextKey<T>
+// -- Key types --
+
+/** A single segment of a context key: string, number, or a record of primitives. */
+export type ContextKeyPart = string | number | Record<string, unknown>
+
+/** A context key is a readonly tuple of parts, branded with the value type. */
+export type ContextKey<T> = readonly ContextKeyPart[] & { __contextValue?: T }
+
+/** Creates a typed context key. */
+export function contextKey<T>(...parts: ContextKeyPart[]): ContextKey<T> {
+	return parts as ContextKey<T>
 }
 
-/**
- * Type-safe accessor for context values.
- *
- * @example
- * ```ts
- * const location = contextValue(context, LocationKey)
- * if (location) {
- *   console.log(location.lat, location.lng)
- * }
- * ```
- */
-export function contextValue<T>(context: Context, key: ContextKey<T>): T | undefined {
-	return context[key] as T | undefined
-}
+// -- Serialization --
 
 /**
- * Arbitrary key-value bag representing the current state.
- * Always includes `time`. Other keys are added by context providers.
+ * Deterministic serialization of a context key for use as a Map key.
+ * Object parts have their keys sorted for stable comparison.
  */
-export interface Context {
+export function serializeKey(key: readonly ContextKeyPart[]): string {
+	return JSON.stringify(key, (_key, value) => {
+		if (value !== null && typeof value === "object" && !Array.isArray(value)) {
+			const sorted: Record<string, unknown> = {}
+			for (const k of Object.keys(value).sort()) {
+				sorted[k] = value[k]
+			}
+			return sorted
+		}
+		return value
+	})
+}
+
+// -- Key matching --
+
+/** Returns true if `key` starts with all parts of `prefix`. */
+function keyStartsWith(key: readonly ContextKeyPart[], prefix: readonly ContextKeyPart[]): boolean {
+	if (key.length < prefix.length) return false
+
+	for (let i = 0; i < prefix.length; i++) {
+		if (!partsEqual(key[i]!, prefix[i]!)) return false
+	}
+
+	return true
+}
+
+/** Recursive structural equality, matching React Query's partialMatchKey approach. */
+function partsEqual(a: unknown, b: unknown): boolean {
+	if (a === b) return true
+	if (typeof a !== typeof b) return false
+	if (a && b && typeof a === "object" && typeof b === "object") {
+		const aKeys = Object.keys(a)
+		const bKeys = Object.keys(b)
+		if (aKeys.length !== bKeys.length) return false
+		return aKeys.every((key) =>
+			partsEqual((a as Record<string, unknown>)[key], (b as Record<string, unknown>)[key]),
+		)
+	}
+	return false
+}
+
+// -- Context store --
+
+/** A single context entry: a key-value pair. */
+export type ContextEntry<T = unknown> = readonly [ContextKey<T>, T]
+
+/**
+ * Mutable context store with tuple keys.
+ *
+ * Supports exact-match lookups and prefix-match queries.
+ * Sources write context in topological order during refresh.
+ */
+export class Context {
 	time: Date
-	[key: string]: unknown
+	private readonly store: Map<string, { key: readonly ContextKeyPart[]; value: unknown }>
+
+	constructor(time: Date = new Date()) {
+		this.time = time
+		this.store = new Map()
+	}
+
+	/** Merges entries into this context. */
+	set(entries: readonly ContextEntry[]): void {
+		for (const [key, value] of entries) {
+			this.store.set(serializeKey(key), { key, value })
+		}
+	}
+
+	/** Exact-match lookup. Returns the value for the given key, or undefined. */
+	get<T>(key: ContextKey<T>): T | undefined {
+		const entry = this.store.get(serializeKey(key))
+		return entry?.value as T | undefined
+	}
+
+	/**
+	 * Prefix-match query. Returns all entries whose key starts with the given prefix.
+	 *
+	 * @example
+	 * ```ts
+	 * // Get all "nextEvent" values across calendar source instances
+	 * const events = context.find(contextKey("nextEvent"))
+	 * ```
+	 */
+	find<T>(prefix: ContextKey<T>): Array<{ key: readonly ContextKeyPart[]; value: T }> {
+		const results: Array<{ key: readonly ContextKeyPart[]; value: T }> = []
+
+		for (const entry of this.store.values()) {
+			if (keyStartsWith(entry.key, prefix)) {
+				results.push({ key: entry.key, value: entry.value as T })
+			}
+		}
+
+		return results
+	}
+
+	/** Returns the number of entries (excluding time). */
+	get size(): number {
+		return this.store.size
+	}
 }