feat: replace flat context with tuple-keyed store

Context keys are now tuples instead of strings, inspired by
React Query's query keys. This prevents context collisions
when multiple instances of the same source type are registered.

Sources write to structured keys like
["aris.google-calendar", "nextEvent", { account: "work" }]
and consumers can query by prefix via context.find().

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

.github/workflows/build-waitlist-website.yml

@@ -1,42 +0,0 @@
-name: Build waitlist website
-
-on:
-  push:
-    branches: [master]
-    paths:
-      - apps/waitlist-website/**
-      - .github/workflows/build-waitlist-website.yml
-
-  workflow_dispatch:
-
-env:
-  REGISTRY: cr.nym.sh
-  IMAGE_NAME: aelis-waitlist-website
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Log in to container registry
-        uses: docker/login-action@v3
-        with:
-          registry: ${{ env.REGISTRY }}
-          username: ${{ secrets.REGISTRY_USERNAME }}
-          password: ${{ secrets.REGISTRY_PASSWORD }}
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Build and push
-        uses: docker/build-push-action@v6
-        with:
-          context: apps/waitlist-website
-          push: true
-          tags: |
-            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
-            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ github.sha }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max

.github/workflows/test.yml

@@ -21,4 +21,4 @@ jobs:
         run: bun install --frozen-lockfile
 
       - name: Run tests
-        run: bun run test
+        run: bun test

.ona/automations.yaml

@@ -1,8 +1,8 @@
 services:
   expo:
     name: Expo Dev Server
-    description: Expo development server for aelis-client
+    description: Expo development server for aris-client
     triggeredBy:
       - postDevcontainerStart
     commands:
-      start: cd apps/aelis-client && ./scripts/run-dev-server.sh
+      start: cd apps/aris-client && ./scripts/run-dev-server.sh

AGENTS.md

@@ -2,7 +2,7 @@
 
 ## Project
 
-AELIS is an AI-powered personal assistant that aggregates data from various sources into a contextual feed. Monorepo with `packages/` (shared libraries) and `apps/` (applications).
+ARIS is an AI-powered personal assistant that aggregates data from various sources into a contextual feed. Monorepo with `packages/` (shared libraries) and `apps/` (applications).
 
 ## Commands
 

README.md

@@ -1,4 +1,4 @@
-# aelis
+# aris
 
 To install dependencies:
 
@@ -8,14 +8,14 @@ bun install
 
 ## Packages
 
-### @aelis/source-tfl
+### @aris/source-tfl
 
 TfL (Transport for London) feed source for tube, overground, and Elizabeth line alerts.
 
 #### Testing
 
 ```bash
-cd packages/aelis-source-tfl
+cd packages/aris-source-tfl
 bun run test
 ```
 

apps/aelis-backend/src/engine/http.test.ts

@@ -1,315 +0,0 @@
-import type { ActionDefinition, ContextEntry, FeedItem, FeedSource } from "@aelis/core"
-
-import { contextKey } from "@aelis/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[] = [],
-	contextEntries: readonly ContextEntry[] | null = null,
-): FeedSource {
-	return {
-		id,
-		async listActions(): Promise<Record<string, ActionDefinition>> {
-			return {}
-		},
-		async executeAction(): Promise<unknown> {
-			return undefined
-		},
-		async fetchContext(): Promise<readonly ContextEntry[] | null> {
-			return contextEntries
-		},
-		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",
-				sourceId: "test",
-				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",
-				sourceId: "test",
-				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")
-	})
-})
-
-describe("GET /api/context", () => {
-	const weatherKey = contextKey("aelis.weather", "weather")
-	const weatherData = { temperature: 20, condition: "Clear" }
-	const contextEntries: readonly ContextEntry[] = [[weatherKey, weatherData]]
-
-	// The mock auth middleware always injects this hardcoded user ID
-	const mockUserId = "k7Gx2mPqRvNwYs9TdLfA4bHcJeUo1iZn"
-
-	function buildContextApp(userId?: string) {
-		const manager = new UserSessionManager({
-			providers: [() => createStubSource("weather", [], contextEntries)],
-		})
-		const app = buildTestApp(manager, userId)
-		const session = manager.getOrCreate(mockUserId)
-		return { app, session }
-	}
-
-	test("returns 401 without auth", async () => {
-		const manager = new UserSessionManager({ providers: [] })
-		const app = buildTestApp(manager)
-
-		const res = await app.request('/api/context?key=["aelis.weather","weather"]')
-
-		expect(res.status).toBe(401)
-	})
-
-	test("returns 400 when key param is missing", async () => {
-		const { app } = buildContextApp("user-1")
-
-		const res = await app.request("/api/context")
-
-		expect(res.status).toBe(400)
-		const body = (await res.json()) as { error: string }
-		expect(body.error).toContain("key")
-	})
-
-	test("returns 400 when key is invalid JSON", async () => {
-		const { app } = buildContextApp("user-1")
-
-		const res = await app.request("/api/context?key=notjson")
-
-		expect(res.status).toBe(400)
-		const body = (await res.json()) as { error: string }
-		expect(body.error).toContain("key")
-	})
-
-	test("returns 400 when key is not an array", async () => {
-		const { app } = buildContextApp("user-1")
-
-		const res = await app.request('/api/context?key="string"')
-
-		expect(res.status).toBe(400)
-		const body = (await res.json()) as { error: string }
-		expect(body.error).toContain("key")
-	})
-
-	test("returns 400 when key contains invalid element types", async () => {
-		const { app } = buildContextApp("user-1")
-
-		const res = await app.request("/api/context?key=[true,null,[1,2]]")
-
-		expect(res.status).toBe(400)
-		const body = (await res.json()) as { error: string }
-		expect(body.error).toContain("key")
-	})
-
-	test("returns 400 when key is an empty array", async () => {
-		const { app } = buildContextApp("user-1")
-
-		const res = await app.request("/api/context?key=[]")
-
-		expect(res.status).toBe(400)
-		const body = (await res.json()) as { error: string }
-		expect(body.error).toContain("key")
-	})
-
-	test("returns 400 when match param is invalid", async () => {
-		const { app } = buildContextApp("user-1")
-
-		const res = await app.request('/api/context?key=["aelis.weather"]&match=invalid')
-
-		expect(res.status).toBe(400)
-		const body = (await res.json()) as { error: string }
-		expect(body.error).toContain("match")
-	})
-
-	test("returns exact match with match=exact", async () => {
-		const { app, session } = buildContextApp("user-1")
-		await session.engine.refresh()
-
-		const res = await app.request('/api/context?key=["aelis.weather","weather"]&match=exact')
-
-		expect(res.status).toBe(200)
-		const body = (await res.json()) as { match: string; value: unknown }
-		expect(body.match).toBe("exact")
-		expect(body.value).toEqual(weatherData)
-	})
-
-	test("returns 404 with match=exact when only prefix would match", async () => {
-		const { app, session } = buildContextApp("user-1")
-		await session.engine.refresh()
-
-		const res = await app.request('/api/context?key=["aelis.weather"]&match=exact')
-
-		expect(res.status).toBe(404)
-	})
-
-	test("returns prefix match with match=prefix", async () => {
-		const { app, session } = buildContextApp("user-1")
-		await session.engine.refresh()
-
-		const res = await app.request('/api/context?key=["aelis.weather"]&match=prefix')
-
-		expect(res.status).toBe(200)
-		const body = (await res.json()) as {
-			match: string
-			entries: Array<{ key: unknown[]; value: unknown }>
-		}
-		expect(body.match).toBe("prefix")
-		expect(body.entries).toHaveLength(1)
-		expect(body.entries[0]!.key).toEqual(["aelis.weather", "weather"])
-		expect(body.entries[0]!.value).toEqual(weatherData)
-	})
-
-	test("default mode returns exact match when available", async () => {
-		const { app, session } = buildContextApp("user-1")
-		await session.engine.refresh()
-
-		const res = await app.request('/api/context?key=["aelis.weather","weather"]')
-
-		expect(res.status).toBe(200)
-		const body = (await res.json()) as { match: string; value: unknown }
-		expect(body.match).toBe("exact")
-		expect(body.value).toEqual(weatherData)
-	})
-
-	test("default mode falls back to prefix when no exact match", async () => {
-		const { app, session } = buildContextApp("user-1")
-		await session.engine.refresh()
-
-		const res = await app.request('/api/context?key=["aelis.weather"]')
-
-		expect(res.status).toBe(200)
-		const body = (await res.json()) as {
-			match: string
-			entries: Array<{ key: unknown[]; value: unknown }>
-		}
-		expect(body.match).toBe("prefix")
-		expect(body.entries).toHaveLength(1)
-		expect(body.entries[0]!.value).toEqual(weatherData)
-	})
-
-	test("returns 404 when neither exact nor prefix matches", async () => {
-		const { app, session } = buildContextApp("user-1")
-		await session.engine.refresh()
-
-		const res = await app.request('/api/context?key=["nonexistent"]')
-
-		expect(res.status).toBe(404)
-		const body = (await res.json()) as { error: string }
-		expect(body.error).toBe("Context key not found")
-	})
-})

apps/aelis-backend/src/engine/http.ts

@@ -1,118 +0,0 @@
-import type { Context, Hono } from "hono"
-
-import { contextKey } from "@aelis/core"
-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)
-	app.get("/api/context", inject, authSessionMiddleware, handleGetContext)
-}
-
-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,
-		})),
-	})
-}
-
-function handleGetContext(c: Context<Env>) {
-	const keyParam = c.req.query("key")
-	if (!keyParam) {
-		return c.json({ error: 'Invalid or missing "key" parameter: must be a JSON array' }, 400)
-	}
-
-	let parsed: unknown
-	try {
-		parsed = JSON.parse(keyParam)
-	} catch {
-		return c.json({ error: 'Invalid or missing "key" parameter: must be a JSON array' }, 400)
-	}
-
-	if (!Array.isArray(parsed) || parsed.length === 0 || !parsed.every(isContextKeyPart)) {
-		return c.json({ error: 'Invalid or missing "key" parameter: must be a JSON array' }, 400)
-	}
-
-	const matchParam = c.req.query("match")
-	if (matchParam !== undefined && matchParam !== "exact" && matchParam !== "prefix") {
-		return c.json({ error: 'Invalid "match" parameter: must be "exact" or "prefix"' }, 400)
-	}
-
-	const user = c.get("user")!
-	const sessionManager = c.get("sessionManager")
-	const session = sessionManager.getOrCreate(user.id)
-	const context = session.engine.currentContext()
-	const key = contextKey(...parsed)
-
-	if (matchParam === "exact") {
-		const value = context.get(key)
-		if (value === undefined) {
-			return c.json({ error: "Context key not found" }, 404)
-		}
-		return c.json({ match: "exact", value })
-	}
-
-	if (matchParam === "prefix") {
-		const entries = context.find(key)
-		if (entries.length === 0) {
-			return c.json({ error: "Context key not found" }, 404)
-		}
-		return c.json({ match: "prefix", entries })
-	}
-
-	// Default: single find() covers both exact and prefix matches
-	const entries = context.find(key)
-	if (entries.length === 0) {
-		return c.json({ error: "Context key not found" }, 404)
-	}
-
-	// If exactly one result with the same key length, treat as exact match
-	if (entries.length === 1 && entries[0]!.key.length === parsed.length) {
-		return c.json({ match: "exact", value: entries[0]!.value })
-	}
-
-	return c.json({ match: "prefix", entries })
-}
-
-/** Validates that a value is a valid ContextKeyPart (string, number, or plain object of primitives). */
-function isContextKeyPart(value: unknown): boolean {
-	if (typeof value === "string" || typeof value === "number") {
-		return true
-	}
-	if (typeof value === "object" && value !== null && !Array.isArray(value)) {
-		return Object.values(value).every(
-			(v) => typeof v === "string" || typeof v === "number" || typeof v === "boolean",
-		)
-	}
-	return false
-}

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

@@ -1,51 +0,0 @@
-import type { FeedItem } from "@aelis/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/aelis-backend/src/enhancement/llm-client.ts

@@ -1,71 +0,0 @@
-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/aelis-backend/src/enhancement/merge.test.ts

@@ -1,151 +0,0 @@
-import type { FeedItem } from "@aelis/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",
-		sourceId: "test",
-		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/aelis-backend/src/enhancement/merge.ts

@@ -1,48 +0,0 @@
-import type { FeedItem } from "@aelis/core"
-
-import type { EnhancementResult } from "./schema.ts"
-
-const ENHANCEMENT_SOURCE_ID = "aelis.enhancement"
-
-/**
- * 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,
-			sourceId: ENHANCEMENT_SOURCE_ID,
-			type: synthetic.type,
-			timestamp: currentTime,
-			data: { text: synthetic.text },
-		})
-	}
-
-	return merged
-}

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

@@ -1,170 +0,0 @@
-import type { FeedItem } from "@aelis/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",
-		sourceId: "test",
-		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/aelis-backend/src/enhancement/prompt-builder.ts

@@ -1,218 +0,0 @@
-import type { FeedItem } from "@aelis/core"
-
-import { CalDavFeedItemType } from "@aelis/source-caldav"
-import { CalendarFeedItemType } from "@aelis/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/aelis-backend/src/enhancement/prompts/system.txt

@@ -1,21 +0,0 @@
-You are AELIS, 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/aelis-backend/src/enhancement/schema.test.ts

@@ -1,176 +0,0 @@
-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/aelis-backend/src/enhancement/schema.ts

@@ -1,89 +0,0 @@
-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/aelis-backend/src/server.ts

@@ -1,67 +0,0 @@
-import { LocationSource } from "@aelis/source-location"
-import { Hono } from "hono"
-
-import { registerAuthHandlers } from "./auth/http.ts"
-import { mockAuthSessionMiddleware, requireSession } from "./auth/session-middleware.ts"
-import { createFeedEnhancer } from "./enhancement/enhance-feed.ts"
-import { createLlmClient } from "./enhancement/llm-client.ts"
-import { registerFeedHttpHandlers } from "./engine/http.ts"
-import { registerLocationHttpHandlers } from "./location/http.ts"
-import { UserSessionManager } from "./session/index.ts"
-import { WeatherSourceProvider } from "./weather/provider.ts"
-
-function main() {
-	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 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" }))
-
-	const isDev = process.env.NODE_ENV !== "production"
-	const authSessionMiddleware = isDev ? mockAuthSessionMiddleware("dev-user") : requireSession
-
-	if (!isDev) {
-		registerAuthHandlers(app)
-	}
-
-	registerFeedHttpHandlers(app, {
-		sessionManager,
-		authSessionMiddleware,
-	})
-	registerLocationHttpHandlers(app, { sessionManager })
-
-	return app
-}
-
-const app = main()
-
-export default {
-	port: 3000,
-	fetch: app.fetch,
-}

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

@@ -1,216 +0,0 @@
-import type { ActionDefinition, ContextEntry, FeedItem, FeedSource } from "@aelis/core"
-
-import { LocationSource } from "@aelis/source-location"
-import { describe, expect, test } from "bun:test"
-
-import { UserSession } from "./user-session.ts"
-
-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
-		},
-	}
-}
-
-describe("UserSession", () => {
-	test("registers sources and starts engine", async () => {
-		const session = new UserSession([createStubSource("test-a"), createStubSource("test-b")])
-
-		const result = await session.engine.refresh()
-
-		expect(result.errors).toHaveLength(0)
-	})
-
-	test("getSource returns registered source", () => {
-		const location = new LocationSource()
-		const session = new UserSession([location])
-
-		const result = session.getSource<LocationSource>("aelis.location")
-
-		expect(result).toBe(location)
-	})
-
-	test("getSource returns undefined for unknown source", () => {
-		const session = new UserSession([createStubSource("test")])
-
-		expect(session.getSource("unknown")).toBeUndefined()
-	})
-
-	test("destroy stops engine and clears sources", () => {
-		const session = new UserSession([createStubSource("test")])
-
-		session.destroy()
-
-		expect(session.getSource("test")).toBeUndefined()
-	})
-
-	test("engine.executeAction routes to correct source", async () => {
-		const location = new LocationSource()
-		const session = new UserSession([location])
-
-		await session.engine.executeAction("aelis.location", "update-location", {
-			lat: 51.5,
-			lng: -0.1,
-			accuracy: 10,
-			timestamp: new Date(),
-		})
-
-		expect(location.lastLocation).toBeDefined()
-		expect(location.lastLocation!.lat).toBe(51.5)
-	})
-})
-
-describe("UserSession.feed", () => {
-	test("returns feed items without enhancer", async () => {
-		const items: FeedItem[] = [
-			{
-				id: "item-1",
-				sourceId: "test",
-				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",
-				sourceId: "test",
-				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",
-				sourceId: "test",
-				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",
-				sourceId: "test",
-				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",
-				sourceId: "test",
-				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",
-				sourceId: "test",
-				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/aelis-backend/src/session/user-session.ts

@@ -1,104 +0,0 @@
-import { FeedEngine, type FeedItem, type FeedResult, type FeedSource } from "@aelis/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[], 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/aelis-client/src/api/auth-middleware.ts

@@ -1,6 +0,0 @@
-import { ApiRequestMiddleware } from "./client"
-
-export const authMiddleware: ApiRequestMiddleware = (_url, init) => {
-	// TODO: placeholder auth middleware
-	return init
-}

apps/aelis-client/src/api/client.ts

@@ -1,39 +0,0 @@
-import { createContext, useContext } from "react"
-
-export type ApiRequestMiddleware = (
-	url: Parameters<typeof fetch>[0],
-	init: RequestInit,
-) => RequestInit
-
-export class ApiClient {
-	private readonly baseUrl: string
-	private readonly middlewares: readonly ApiRequestMiddleware[]
-
-	static noop = new ApiClient({ baseUrl: "" })
-
-	constructor({
-		baseUrl,
-		middlewares = [],
-	}: {
-		baseUrl: string
-		middlewares?: ApiRequestMiddleware[]
-	}) {
-		this.baseUrl = baseUrl
-		this.middlewares = middlewares
-	}
-
-	async request<T>(...[url, init = {}]: Parameters<typeof fetch>): Promise<[Response, T]> {
-		const finalInit = this.middlewares.reduce(
-			(prevInit, middleware) => middleware(url, prevInit),
-			init,
-		)
-		return fetch(this.baseUrl ? new URL(url.toString(), this.baseUrl) : url, finalInit).then((res) =>
-			Promise.all([Promise.resolve(res), res.json()]),
-		)
-	}
-}
-
-export const ApiClientContext = createContext(ApiClient.noop)
-export function useApiClient() {
-	return useContext(ApiClientContext)
-}

apps/aelis-client/src/app/_layout.tsx

@@ -1,65 +0,0 @@
-import "react-native-reanimated"
-import { QueryClient, QueryClientProvider } from "@tanstack/react-query"
-import { Stack } from "expo-router"
-import { StatusBar } from "expo-status-bar"
-import React from "react"
-import { useColorScheme } from "react-native"
-import tw, { useDeviceContext } from "twrnc"
-
-import { authMiddleware } from "@/api/auth-middleware"
-import { ApiClient, ApiClientContext } from "@/api/client"
-
-const queryClient = new QueryClient()
-const apiClient = new ApiClient({
-	baseUrl: process.env.EXPO_PUBLIC_API_BASE_URL ?? "",
-	middlewares: [authMiddleware],
-})
-
-export default function RootLayout() {
-	useDeviceContext(tw)
-
-	const colorScheme = useColorScheme()
-	const headerBg = colorScheme === "dark" ? "#1c1917" : "#f5f5f4"
-	const headerTint = colorScheme === "dark" ? "#e7e5e4" : "#1c1917"
-
-	return (
-		<ContextProvider>
-			<Stack
-				screenOptions={{
-					headerShown: false,
-					contentStyle: { backgroundColor: headerBg },
-				}}
-			>
-				<Stack.Screen
-					name="components/index"
-					options={{
-						headerShown: true,
-						title: "Components",
-						headerStyle: { backgroundColor: headerBg },
-						headerTintColor: headerTint,
-						headerShadowVisible: false,
-					}}
-				/>
-				<Stack.Screen
-					name="components/[name]"
-					options={{
-						headerShown: true,
-						title: "",
-						headerStyle: { backgroundColor: headerBg },
-						headerTintColor: headerTint,
-						headerShadowVisible: false,
-					}}
-				/>
-			</Stack>
-			<StatusBar style="auto" />
-		</ContextProvider>
-	)
-}
-
-function ContextProvider({ children }: React.PropsWithChildren) {
-	return (
-		<QueryClientProvider client={queryClient}>
-			<ApiClientContext value={apiClient}>{children}</ApiClientContext>
-		</QueryClientProvider>
-	)
-}

apps/aelis-client/src/app/components/[name].tsx

@@ -1,48 +0,0 @@
-import { useLocalSearchParams, useNavigation } from "expo-router"
-import { useEffect } from "react"
-import { ScrollView, View } from "react-native"
-import tw from "twrnc"
-
-import { buttonShowcase } from "@/components/ui/button.showcase"
-import { feedCardShowcase } from "@/components/ui/feed-card.showcase"
-import { monospaceTextShowcase } from "@/components/ui/monospace-text.showcase"
-import { sansSerifTextShowcase } from "@/components/ui/sans-serif-text.showcase"
-import { serifTextShowcase } from "@/components/ui/serif-text.showcase"
-import { type Showcase } from "@/components/showcase"
-import { SansSerifText } from "@/components/ui/sans-serif-text"
-
-const showcases: Record<string, Showcase> = {
-	button: buttonShowcase,
-	"feed-card": feedCardShowcase,
-	"serif-text": serifTextShowcase,
-	"sans-serif-text": sansSerifTextShowcase,
-	"monospace-text": monospaceTextShowcase,
-}
-
-export default function ComponentDetailScreen() {
-	const { name } = useLocalSearchParams<{ name: string }>()
-	const navigation = useNavigation()
-	const showcase = showcases[name]
-
-	useEffect(() => {
-		if (showcase) {
-			navigation.setOptions({ title: showcase.title })
-		}
-	}, [navigation, showcase])
-
-	if (!showcase) {
-		return (
-			<View style={tw`bg-stone-100 dark:bg-stone-900 flex-1 items-center justify-center`}>
-				<SansSerifText>Component not found</SansSerifText>
-			</View>
-		)
-	}
-
-	const ShowcaseComponent = showcase.component
-
-	return (
-		<ScrollView style={tw`bg-stone-100 dark:bg-stone-900 flex-1`} contentContainerStyle={tw`px-5 pb-10 pt-4 gap-6`}>
-			<ShowcaseComponent />
-		</ScrollView>
-	)
-}

apps/aelis-client/src/app/components/index.tsx

@@ -1,37 +0,0 @@
-import { Link } from "expo-router"
-import { FlatList, Pressable, View } from "react-native"
-import tw from "twrnc"
-
-import { SansSerifText } from "@/components/ui/sans-serif-text"
-
-const components = [
-	{ name: "button", label: "Button" },
-	{ name: "feed-card", label: "FeedCard" },
-	{ name: "serif-text", label: "SerifText" },
-	{ name: "sans-serif-text", label: "SansSerifText" },
-	{ name: "monospace-text", label: "MonospaceText" },
-] as const
-
-export default function ComponentsScreen() {
-	return (
-		<View style={tw`flex-1`}>
-			<View style={tw`mx-4 mt-4 rounded-xl border border-stone-200 dark:border-stone-800 overflow-hidden`}>
-				<FlatList
-					data={components}
-					keyExtractor={(item) => item.name}
-					scrollEnabled={false}
-					ItemSeparatorComponent={() => (
-						<View style={tw`border-b border-stone-200 dark:border-stone-800`} />
-					)}
-					renderItem={({ item }) => (
-						<Link href={`/components/${item.name}`} asChild>
-							<Pressable style={tw`px-4 py-3`}>
-								<SansSerifText style={tw`text-base`}>{item.label}</SansSerifText>
-							</Pressable>
-						</Link>
-					)}
-				/>
-			</View>
-		</View>
-	)
-}

apps/aelis-client/src/app/index.tsx

@@ -1,28 +0,0 @@
-import { Link } from "expo-router"
-import { Pressable } from "react-native"
-import { SafeAreaView } from "react-native-safe-area-context"
-import tw from "twrnc"
-
-import { Button } from "@/components/ui/button"
-import { FeedCard } from "@/components/ui/feed-card"
-import { MonospaceText } from "@/components/ui/monospace-text"
-import { SansSerifText } from "@/components/ui/sans-serif-text"
-import { SerifText } from "@/components/ui/serif-text"
-
-export default function HomeScreen() {
-	return (
-		<SafeAreaView style={tw`bg-stone-100 dark:bg-stone-900 flex-1 px-5 pt-6 gap-4`}>
-			<FeedCard>
-				<SerifText style={tw`text-4xl`}>Hello world asdsadsa</SerifText>
-				<SansSerifText style={tw`text-4xl font-bold`}>Hello world</SansSerifText>
-				<MonospaceText style={tw`text-4xl`}>asdjsakljdl</MonospaceText>
-				<Button style={tw`self-start`} label="Test" />
-			</FeedCard>
-			<Link href="/components" asChild>
-				<Pressable>
-					<SansSerifText style={tw`text-teal-600`}>View component library</SansSerifText>
-				</Pressable>
-			</Link>
-		</SafeAreaView>
-	)
-}

apps/aelis-client/src/components/showcase.tsx

@@ -1,18 +0,0 @@
-import { View } from "react-native"
-import tw from "twrnc"
-
-import { SansSerifText } from "./ui/sans-serif-text"
-
-export type Showcase = {
-	title: string
-	component: React.ComponentType
-}
-
-export function Section({ title, children }: { title: string; children: React.ReactNode }) {
-	return (
-		<View style={tw`gap-3`}>
-			<SansSerifText style={tw`text-sm text-stone-500 dark:text-stone-400`}>{title}</SansSerifText>
-			{children}
-		</View>
-	)
-}

apps/aelis-client/src/components/ui/button.showcase.tsx

@@ -1,42 +0,0 @@
-import { View } from "react-native"
-import tw from "twrnc"
-
-import { Button } from "./button"
-import { type Showcase, Section } from "../showcase"
-
-function ButtonShowcase() {
-	return (
-		<View style={tw`gap-6`}>
-			<Section title="Default">
-				<Button style={tw`self-start`} label="Press me" />
-			</Section>
-			<Section title="Leading icon">
-				<Button
-					style={tw`self-start`}
-					label="Add item"
-					leadingIcon={<Button.Icon name="plus" />}
-				/>
-			</Section>
-			<Section title="Trailing icon">
-				<Button
-					style={tw`self-start`}
-					label="Next"
-					trailingIcon={<Button.Icon name="arrow-right" />}
-				/>
-			</Section>
-			<Section title="Both icons">
-				<Button
-					style={tw`self-start`}
-					label="Download"
-					leadingIcon={<Button.Icon name="download" />}
-					trailingIcon={<Button.Icon name="chevron-down" />}
-				/>
-			</Section>
-		</View>
-	)
-}
-
-export const buttonShowcase: Showcase = {
-	title: "Button",
-	component: ButtonShowcase,
-}

apps/aelis-client/src/components/ui/button.tsx

@@ -1,43 +0,0 @@
-import Feather from "@expo/vector-icons/Feather"
-import { type PressableProps, Pressable, View } from "react-native"
-import tw from "twrnc"
-
-import { SansSerifText } from "./sans-serif-text"
-
-type FeatherIconName = React.ComponentProps<typeof Feather>["name"]
-
-type ButtonIconProps = {
-	name: FeatherIconName
-}
-
-function ButtonIcon({ name }: ButtonIconProps) {
-	return <Feather name={name} size={18} color={tw.color("text-stone-100 dark:text-stone-200")} />
-}
-
-type ButtonProps = Omit<PressableProps, "children"> & {
-	label: string
-	leadingIcon?: React.ReactNode
-	trailingIcon?: React.ReactNode
-}
-
-export function Button({ style, label, leadingIcon, trailingIcon, ...props }: ButtonProps) {
-	const hasIcons = leadingIcon != null || trailingIcon != null
-
-	const textElement = <SansSerifText style={tw`text-stone-100 dark:text-stone-200 font-medium`}>{label}</SansSerifText>
-
-	return (
-		<Pressable style={[tw`rounded-full bg-teal-600 px-4 py-3 w-fit`, style]} {...props}>
-			{hasIcons ? (
-				<View style={tw`flex-row items-center gap-1.5`}>
-					{leadingIcon}
-					{textElement}
-					{trailingIcon}
-				</View>
-			) : (
-				textElement
-			)}
-		</Pressable>
-	)
-}
-
-Button.Icon = ButtonIcon

apps/aelis-client/src/components/ui/feed-card.showcase.tsx

@@ -1,32 +0,0 @@
-import { View } from "react-native"
-import tw from "twrnc"
-
-import { Button } from "./button"
-import { FeedCard } from "./feed-card"
-import { SansSerifText } from "./sans-serif-text"
-import { SerifText } from "./serif-text"
-import { type Showcase, Section } from "../showcase"
-
-function FeedCardShowcase() {
-	return (
-		<View style={tw`gap-6`}>
-			<Section title="Default">
-				<FeedCard style={tw`p-4`}>
-					<SansSerifText>Card content goes here</SansSerifText>
-				</FeedCard>
-			</Section>
-			<Section title="With mixed content">
-				<FeedCard style={tw`p-4 gap-2`}>
-					<SerifText style={tw`text-xl`}>Title</SerifText>
-					<SansSerifText>Body text inside a feed card.</SansSerifText>
-					<Button style={tw`self-start mt-2`} label="Action" />
-				</FeedCard>
-			</Section>
-		</View>
-	)
-}
-
-export const feedCardShowcase: Showcase = {
-	title: "FeedCard",
-	component: FeedCardShowcase,
-}

apps/aelis-client/src/components/ui/feed-card.tsx

@@ -1,6 +0,0 @@
-import { View, type ViewProps } from "react-native"
-import tw from "twrnc"
-
-export function FeedCard({ style, ...props }: ViewProps) {
-	return <View style={[tw`border border-stone-200 dark:border-stone-800 rounded-lg`, style]} {...props} />
-}

apps/aelis-client/src/components/ui/monospace-text.showcase.tsx

@@ -1,31 +0,0 @@
-import { View } from "react-native"
-import tw from "twrnc"
-
-import { MonospaceText } from "./monospace-text"
-import { type Showcase, Section } from "../showcase"
-
-function MonospaceTextShowcase() {
-	return (
-		<View style={tw`gap-6`}>
-			<Section title="Sizes">
-				<View style={tw`gap-2`}>
-					<MonospaceText style={tw`text-sm`}>Small monospace text</MonospaceText>
-					<MonospaceText style={tw`text-base`}>Base monospace text</MonospaceText>
-					<MonospaceText style={tw`text-xl`}>Extra large monospace text</MonospaceText>
-					<MonospaceText style={tw`text-3xl`}>3XL monospace text</MonospaceText>
-				</View>
-			</Section>
-			<Section title="Code-like usage">
-				<View style={tw`bg-stone-200 dark:bg-stone-800 rounded-lg p-3`}>
-					<MonospaceText style={tw`text-sm`}>{"const x = 42;"}</MonospaceText>
-					<MonospaceText style={tw`text-sm`}>{"console.log(x);"}</MonospaceText>
-				</View>
-			</Section>
-		</View>
-	)
-}
-
-export const monospaceTextShowcase: Showcase = {
-	title: "MonospaceText",
-	component: MonospaceTextShowcase,
-}

apps/aelis-client/src/components/ui/monospace-text.tsx

@@ -1,10 +0,0 @@
-import { Text, type TextProps } from "react-native"
-import tw from "twrnc"
-
-export function MonospaceText({ children, style, ...props }: TextProps) {
-	return (
-		<Text style={[tw`text-stone-800 dark:text-stone-200`, { fontFamily: "Menlo" }, style]} {...props}>
-			{children}
-		</Text>
-	)
-}

apps/aelis-client/src/components/ui/sans-serif-text.showcase.tsx

@@ -1,34 +0,0 @@
-import { View } from "react-native"
-import tw from "twrnc"
-
-import { SansSerifText } from "./sans-serif-text"
-import { type Showcase, Section } from "../showcase"
-
-function SansSerifTextShowcase() {
-	return (
-		<View style={tw`gap-6`}>
-			<Section title="Sizes">
-				<View style={tw`gap-2`}>
-					<SansSerifText style={tw`text-sm`}>Small sans-serif text</SansSerifText>
-					<SansSerifText style={tw`text-base`}>Base sans-serif text</SansSerifText>
-					<SansSerifText style={tw`text-xl`}>Extra large sans-serif text</SansSerifText>
-					<SansSerifText style={tw`text-3xl`}>3XL sans-serif text</SansSerifText>
-				</View>
-			</Section>
-			<Section title="Weights">
-				<View style={tw`gap-2`}>
-					<SansSerifText style={tw`font-light`}>Light weight</SansSerifText>
-					<SansSerifText style={tw`font-normal`}>Normal weight</SansSerifText>
-					<SansSerifText style={tw`font-medium`}>Medium weight</SansSerifText>
-					<SansSerifText style={tw`font-semibold`}>Semibold weight</SansSerifText>
-					<SansSerifText style={tw`font-bold`}>Bold weight</SansSerifText>
-				</View>
-			</Section>
-		</View>
-	)
-}
-
-export const sansSerifTextShowcase: Showcase = {
-	title: "SansSerifText",
-	component: SansSerifTextShowcase,
-}

apps/aelis-client/src/components/ui/sans-serif-text.tsx

@@ -1,10 +0,0 @@
-import { Text, type TextProps } from "react-native"
-import tw from "twrnc"
-
-export function SansSerifText({ children, style, ...props }: TextProps) {
-	return (
-		<Text style={[tw`text-stone-800 dark:text-stone-200`, { fontFamily: "Inter" }, style]} {...props}>
-			{children}
-		</Text>
-	)
-}

apps/aelis-client/src/components/ui/serif-text.showcase.tsx

@@ -1,25 +0,0 @@
-import { View } from "react-native"
-import tw from "twrnc"
-
-import { SerifText } from "./serif-text"
-import { type Showcase, Section } from "../showcase"
-
-function SerifTextShowcase() {
-	return (
-		<View style={tw`gap-6`}>
-			<Section title="Sizes">
-				<View style={tw`gap-2`}>
-					<SerifText style={tw`text-sm`}>Small serif text</SerifText>
-					<SerifText style={tw`text-base`}>Base serif text</SerifText>
-					<SerifText style={tw`text-xl`}>Extra large serif text</SerifText>
-					<SerifText style={tw`text-3xl`}>3XL serif text</SerifText>
-				</View>
-			</Section>
-		</View>
-	)
-}
-
-export const serifTextShowcase: Showcase = {
-	title: "SerifText",
-	component: SerifTextShowcase,
-}

apps/aelis-client/src/components/ui/serif-text.tsx

@@ -1,10 +0,0 @@
-import { Text, type TextProps } from "react-native"
-import tw from "twrnc"
-
-export function SerifText({ children, style, ...props }: TextProps) {
-	return (
-		<Text style={[tw`text-stone-800 dark:text-stone-200`, { fontFamily: "Source Serif 4" }, style]} {...props}>
-			{children}
-		</Text>
-	)
-}

apps/aelis-client/src/feed/queries.ts

@@ -1,13 +0,0 @@
-import { queryOptions } from "@tanstack/react-query"
-
-import { useApiClient } from "@/api/client"
-
-import { FeedItem } from "./types"
-
-export function useFeedQuery() {
-	const api = useApiClient()
-	return queryOptions({
-		queryKey: ["feed"],
-		queryFn: async () => api.request<{ items: FeedItem[] }>("/feed?render=json-render"),
-	})
-}

apps/aelis-client/src/feed/types.ts

@@ -1,5 +0,0 @@
-import { Spec } from "@json-render/core"
-
-export interface FeedItem {
-	ui: Spec
-}

apps/aelis-client/src/json-render/catalog.ts

@@ -1,68 +0,0 @@
-import { defineCatalog } from "@json-render/core"
-import { schema } from "@json-render/react-native/schema"
-import { z } from "zod"
-
-export const catalog = defineCatalog(schema, {
-	components: {
-		View: {
-			props: z.object({
-				style: z.string().nullable(),
-			}),
-			slots: ["default"],
-			description:
-				"Generic layout container. The style prop accepts a twrnc class string (e.g. 'flex-row gap-2 p-4 items-center').",
-			example: { style: "flex-row gap-2 p-4" },
-		},
-		Button: {
-			props: z.object({
-				label: z.string(),
-				leadingIcon: z.string().nullable(),
-				trailingIcon: z.string().nullable(),
-			}),
-			events: ["press"],
-			slots: [],
-			description:
-				"Pressable button with a label and optional Feather icons. Icon values are Feather icon names (e.g. 'plus', 'arrow-right'). Bind on.press to trigger an action.",
-			example: { label: "Add item", leadingIcon: "plus", trailingIcon: null },
-		},
-		FeedCard: {
-			props: z.object({
-				style: z.string().nullable(),
-			}),
-			slots: ["default"],
-			description: "Bordered card container for feed content. The style prop accepts a twrnc class string.",
-			example: { style: "p-4 gap-2" },
-		},
-		SansSerifText: {
-			props: z.object({
-				text: z.string(),
-				style: z.string().nullable(),
-			}),
-			slots: [],
-			description:
-				"Sans-serif text (Inter font). The style prop accepts a twrnc class string for size, weight, color, etc.",
-			example: { text: "Hello world", style: "text-base font-medium" },
-		},
-		SerifText: {
-			props: z.object({
-				text: z.string(),
-				style: z.string().nullable(),
-			}),
-			slots: [],
-			description:
-				"Serif text (Source Serif 4 font). The style prop accepts a twrnc class string for size, color, etc.",
-			example: { text: "Heading", style: "text-xl" },
-		},
-		MonospaceText: {
-			props: z.object({
-				text: z.string(),
-				style: z.string().nullable(),
-			}),
-			slots: [],
-			description:
-				"Monospace text (Menlo font). The style prop accepts a twrnc class string for size, color, etc.",
-			example: { text: "const x = 42", style: "text-sm" },
-		},
-	},
-	actions: {},
-})

apps/aelis-client/src/json-render/index.ts

@@ -1,2 +0,0 @@
-export { catalog } from "./catalog"
-export { registry } from "./registry"

apps/aelis-client/src/json-render/registry.tsx

@@ -1,39 +0,0 @@
-import { defineRegistry } from "@json-render/react-native"
-import { View } from "react-native"
-import tw from "twrnc"
-
-import { Button } from "@/components/ui/button"
-import { FeedCard } from "@/components/ui/feed-card"
-import { MonospaceText } from "@/components/ui/monospace-text"
-import { SansSerifText } from "@/components/ui/sans-serif-text"
-import { SerifText } from "@/components/ui/serif-text"
-
-import { catalog } from "./catalog"
-
-type ButtonIconName = React.ComponentProps<typeof Button.Icon>["name"]
-
-export const { registry } = defineRegistry(catalog, {
-	components: {
-		View: ({ props, children }) => <View style={props.style ? tw`${props.style}` : undefined}>{children}</View>,
-		Button: ({ props, emit }) => (
-			<Button
-				label={props.label}
-				leadingIcon={props.leadingIcon ? <Button.Icon name={props.leadingIcon as ButtonIconName} /> : undefined}
-				trailingIcon={props.trailingIcon ? <Button.Icon name={props.trailingIcon as ButtonIconName} /> : undefined}
-				onPress={() => emit("press")}
-			/>
-		),
-		FeedCard: ({ props, children }) => (
-			<FeedCard style={props.style ? tw`${props.style}` : undefined}>{children}</FeedCard>
-		),
-		SansSerifText: ({ props }) => (
-			<SansSerifText style={props.style ? tw`${props.style}` : undefined}>{props.text}</SansSerifText>
-		),
-		SerifText: ({ props }) => (
-			<SerifText style={props.style ? tw`${props.style}` : undefined}>{props.text}</SerifText>
-		),
-		MonospaceText: ({ props }) => (
-			<MonospaceText style={props.style ? tw`${props.style}` : undefined}>{props.text}</MonospaceText>
-		),
-	},
-})

apps/aris-backend/.env.example

@@ -7,11 +7,6 @@ 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

@@ -1,5 +1,5 @@
 {
-	"name": "@aelis/backend",
+	"name": "@aris/backend",
 	"version": "0.0.0",
 	"type": "module",
 	"main": "src/server.ts",
@@ -9,13 +9,10 @@
 		"test": "bun test src/"
 	},
 	"dependencies": {
-		"@aelis/core": "workspace:*",
-		"@aelis/source-caldav": "workspace:*",
-		"@aelis/source-google-calendar": "workspace:*",
-		"@aelis/source-location": "workspace:*",
-		"@aelis/source-tfl": "workspace:*",
-		"@aelis/source-weatherkit": "workspace:*",
-		"@openrouter/sdk": "^0.9.11",
+		"@aris/core": "workspace:*",
+		"@aris/source-location": "workspace:*",
+		"@aris/source-tfl": "workspace:*",
+		"@aris/source-weatherkit": "workspace:*",
 		"arktype": "^2.1.29",
 		"better-auth": "^1",
 		"hono": "^4",

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

@@ -61,7 +61,7 @@ export async function getSessionFromHeaders(
 }
 
 /**
- * Dev/test middleware that injects a fake user and 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 {
@@ -69,34 +69,8 @@ export function mockAuthSessionMiddleware(userId?: string): AuthSessionMiddlewar
 		if (!userId) {
 			return c.json({ error: "Unauthorized" }, 401)
 		}
-
-		const now = new Date()
-		const expiresAt = new Date(now.getTime() + 7 * 24 * 60 * 60 * 1000)
-
-		const user: AuthUser = {
-			id: "k7Gx2mPqRvNwYs9TdLfA4bHcJeUo1iZn",
-			name: "Dev User",
-			email: "dev@aelis.local",
-			emailVerified: true,
-			image: null,
-			createdAt: now,
-			updatedAt: now,
-		}
-
-		const session: AuthSession = {
-			id: "Wt3FvBpXaQrMhD8sKjE6LcYn0gUz5iRo",
-			userId: "k7Gx2mPqRvNwYs9TdLfA4bHcJeUo1iZn",
-			token: "Vb9CxNfRm2KwQs7TjPeA5dLhYg0UoZi4",
-			expiresAt,
-			ipAddress: "127.0.0.1",
-			userAgent: "aelis-dev",
-			createdAt: now,
-			updatedAt: now,
-		}
-
-		c.set("user", user)
-		c.set("session", session)
-
+		c.set("user", { id: userId } as AuthUser)
+		c.set("session", { id: "mock-session" } as AuthSession)
 		await next()
 	}
 }

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

@@ -0,0 +1,140 @@
+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([])
+		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([() => 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([() => 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([() => 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 +1,41 @@
+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 = session.engine.lastFeed() ?? (await session.engine.refresh())
+
+	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

@@ -45,7 +45,7 @@ async function handleUpdateLocation(c: Context<Env>) {
 	const user = c.get("user")!
 	const sessionManager = c.get("sessionManager")
 	const session = sessionManager.getOrCreate(user.id)
-	await session.engine.executeAction("aelis.location", "update-location", {
+	await session.engine.executeAction("aris.location", "update-location", {
 		lat: result.lat,
 		lng: result.lng,
 		accuracy: result.accuracy,

apps/aris-backend/src/server.ts

@@ -0,0 +1,40 @@
+import { LocationSource } from "@aris/source-location"
+import { Hono } from "hono"
+
+import { registerAuthHandlers } from "./auth/http.ts"
+import { requireSession } from "./auth/session-middleware.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"
+
+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 app = new Hono()
+
+	app.get("/health", (c) => c.json({ status: "ok" }))
+
+	registerAuthHandlers(app)
+	registerFeedHttpHandlers(app, { sessionManager, authSessionMiddleware: requireSession })
+	registerLocationHttpHandlers(app, { sessionManager })
+
+	return app
+}
+
+const app = main()
+
+export default {
+	port: 3000,
+	fetch: app.fetch,
+}

apps/aris-backend/src/session/feed-source-provider.ts

@@ -1,4 +1,4 @@
-import type { FeedSource } from "@aelis/core"
+import type { FeedSource } from "@aris/core"
 
 export interface FeedSourceProvider {
 	feedSourceForUser(userId: string): FeedSource

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

@@ -1,6 +1,6 @@
-import type { WeatherKitClient, WeatherKitResponse } from "@aelis/source-weatherkit"
+import type { WeatherKitClient, WeatherKitResponse } from "@aris/source-weatherkit"
 
-import { LocationSource } from "@aelis/source-location"
+import { LocationSource } from "@aris/source-location"
 import { describe, expect, mock, test } from "bun:test"
 
 import { WeatherSourceProvider } from "../weather/provider.ts"
@@ -12,7 +12,7 @@ const mockWeatherClient: WeatherKitClient = {
 
 describe("UserSessionManager", () => {
 	test("getOrCreate creates session on first call", () => {
-		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
+		const manager = new UserSessionManager([() => 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({ providers: [() => new LocationSource()] })
+		const manager = new UserSessionManager([() => 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({ providers: [() => new LocationSource()] })
+		const manager = new UserSessionManager([() => new LocationSource()])
 
 		const session1 = manager.getOrCreate("user-1")
 		const session2 = manager.getOrCreate("user-2")
@@ -39,19 +39,19 @@ describe("UserSessionManager", () => {
 	})
 
 	test("each user gets independent source instances", () => {
-		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
+		const manager = new UserSessionManager([() => new LocationSource()])
 
 		const session1 = manager.getOrCreate("user-1")
 		const session2 = manager.getOrCreate("user-2")
 
-		const source1 = session1.getSource<LocationSource>("aelis.location")
-		const source2 = session2.getSource<LocationSource>("aelis.location")
+		const source1 = session1.getSource<LocationSource>("aris.location")
+		const source2 = session2.getSource<LocationSource>("aris.location")
 
 		expect(source1).not.toBe(source2)
 	})
 
 	test("remove destroys session and allows re-creation", () => {
-		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
+		const manager = new UserSessionManager([() => 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({ providers: [() => new LocationSource()] })
+		const manager = new UserSessionManager([() => new LocationSource()])
 
 		expect(() => manager.remove("unknown")).not.toThrow()
 	})
 
 	test("accepts function providers", async () => {
-		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
+		const manager = new UserSessionManager([() => new LocationSource()])
 
 		const session = manager.getOrCreate("user-1")
 		const result = await session.engine.refresh()
@@ -77,29 +77,25 @@ describe("UserSessionManager", () => {
 
 	test("accepts object providers", () => {
 		const provider = new WeatherSourceProvider({ client: mockWeatherClient })
-		const manager = new UserSessionManager({
-			providers: [() => new LocationSource(), provider],
-		})
+		const manager = new UserSessionManager([() => new LocationSource(), provider])
 
 		const session = manager.getOrCreate("user-1")
 
-		expect(session.getSource("aelis.weather")).toBeDefined()
+		expect(session.getSource("aris.weather")).toBeDefined()
 	})
 
 	test("accepts mixed providers", () => {
 		const provider = new WeatherSourceProvider({ client: mockWeatherClient })
-		const manager = new UserSessionManager({
-			providers: [() => new LocationSource(), provider],
-		})
+		const manager = new UserSessionManager([() => new LocationSource(), provider])
 
 		const session = manager.getOrCreate("user-1")
 
-		expect(session.getSource("aelis.location")).toBeDefined()
-		expect(session.getSource("aelis.weather")).toBeDefined()
+		expect(session.getSource("aris.location")).toBeDefined()
+		expect(session.getSource("aris.weather")).toBeDefined()
 	})
 
 	test("refresh returns feed result through session", async () => {
-		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
+		const manager = new UserSessionManager([() => new LocationSource()])
 
 		const session = manager.getOrCreate("user-1")
 		const result = await session.engine.refresh()
@@ -111,28 +107,28 @@ describe("UserSessionManager", () => {
 	})
 
 	test("location update via executeAction works", async () => {
-		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
+		const manager = new UserSessionManager([() => new LocationSource()])
 
 		const session = manager.getOrCreate("user-1")
-		await session.engine.executeAction("aelis.location", "update-location", {
+		await session.engine.executeAction("aris.location", "update-location", {
 			lat: 51.5074,
 			lng: -0.1278,
 			accuracy: 10,
 			timestamp: new Date(),
 		})
 
-		const source = session.getSource<LocationSource>("aelis.location")
+		const source = session.getSource<LocationSource>("aris.location")
 		expect(source?.lastLocation?.lat).toBe(51.5074)
 	})
 
 	test("subscribe receives updates after location push", async () => {
-		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
+		const manager = new UserSessionManager([() => new LocationSource()])
 		const callback = mock()
 
 		const session = manager.getOrCreate("user-1")
 		session.engine.subscribe(callback)
 
-		await session.engine.executeAction("aelis.location", "update-location", {
+		await session.engine.executeAction("aris.location", "update-location", {
 			lat: 51.5074,
 			lng: -0.1278,
 			accuracy: 10,
@@ -146,7 +142,7 @@ describe("UserSessionManager", () => {
 	})
 
 	test("remove stops reactive updates", async () => {
-		const manager = new UserSessionManager({ providers: [() => new LocationSource()] })
+		const manager = new UserSessionManager([() => new LocationSource()])
 		const callback = mock()
 
 		const session = manager.getOrCreate("user-1")
@@ -156,7 +152,7 @@ describe("UserSessionManager", () => {
 
 		// Create new session and push location — old callback should not fire
 		const session2 = manager.getOrCreate("user-1")
-		await session2.engine.executeAction("aelis.location", "update-location", {
+		await session2.engine.executeAction("aris.location", "update-location", {
 			lat: 51.5074,
 			lng: -0.1278,
 			accuracy: 10,

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

@@ -1,21 +1,13 @@
-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(config: UserSessionManagerConfig) {
-		this.providers = config.providers
-		this.feedEnhancer = config.feedEnhancer ?? null
+	constructor(providers: FeedSourceProviderInput[]) {
+		this.providers = providers
 	}
 
 	getOrCreate(userId: string): UserSession {
@@ -24,7 +16,7 @@ export class UserSessionManager {
 			const sources = this.providers.map((p) =>
 				typeof p === "function" ? p(userId) : p.feedSourceForUser(userId),
 			)
-			session = new UserSession(sources, this.feedEnhancer)
+			session = new UserSession(sources)
 			this.sessions.set(userId, session)
 		}
 		return session

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

@@ -0,0 +1,72 @@
+import type { ActionDefinition, ContextEntry, 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 {
+	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 []
+		},
+	}
+}
+
+describe("UserSession", () => {
+	test("registers sources and starts engine", async () => {
+		const session = new UserSession([createStubSource("test-a"), createStubSource("test-b")])
+
+		const result = await session.engine.refresh()
+
+		expect(result.errors).toHaveLength(0)
+	})
+
+	test("getSource returns registered source", () => {
+		const location = new LocationSource()
+		const session = new UserSession([location])
+
+		const result = session.getSource<LocationSource>("aris.location")
+
+		expect(result).toBe(location)
+	})
+
+	test("getSource returns undefined for unknown source", () => {
+		const session = new UserSession([createStubSource("test")])
+
+		expect(session.getSource("unknown")).toBeUndefined()
+	})
+
+	test("destroy stops engine and clears sources", () => {
+		const session = new UserSession([createStubSource("test")])
+
+		session.destroy()
+
+		expect(session.getSource("test")).toBeUndefined()
+	})
+
+	test("engine.executeAction routes to correct source", async () => {
+		const location = new LocationSource()
+		const session = new UserSession([location])
+
+		await session.engine.executeAction("aris.location", "update-location", {
+			lat: 51.5,
+			lng: -0.1,
+			accuracy: 10,
+			timestamp: new Date(),
+		})
+
+		expect(location.lastLocation).toBeDefined()
+		expect(location.lastLocation!.lat).toBe(51.5)
+	})
+})

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

@@ -0,0 +1,24 @@
+import { FeedEngine, type FeedSource } from "@aris/core"
+
+export class UserSession {
+	readonly engine: FeedEngine
+	private sources = new Map<string, FeedSource>()
+
+	constructor(sources: FeedSource[]) {
+		this.engine = new FeedEngine()
+		for (const source of sources) {
+			this.sources.set(source.id, source)
+			this.engine.register(source)
+		}
+		this.engine.start()
+	}
+
+	getSource<T extends FeedSource>(sourceId: string): T | undefined {
+		return this.sources.get(sourceId) as T | undefined
+	}
+
+	destroy(): void {
+		this.engine.stop()
+		this.sources.clear()
+	}
+}

apps/aris-backend/src/tfl/provider.ts

@@ -1,4 +1,4 @@
-import { TflSource, type ITflApi } from "@aelis/source-tfl"
+import { TflSource, type ITflApi } from "@aris/source-tfl"
 
 import type { FeedSourceProvider } from "../session/feed-source-provider.ts"
 

apps/aris-backend/src/weather/provider.ts

@@ -1,4 +1,4 @@
-import { WeatherSource, type WeatherSourceOptions } from "@aelis/source-weatherkit"
+import { WeatherSource, type WeatherSourceOptions } from "@aris/source-weatherkit"
 
 import type { FeedSourceProvider } from "../session/feed-source-provider.ts"
 

apps/aris-client/app.json

@@ -1,11 +1,11 @@
 {
 	"expo": {
-		"name": "Aelis",
-		"slug": "aelis-client",
+		"name": "Aris",
+		"slug": "aris-client",
 		"version": "1.0.0",
 		"orientation": "portrait",
 		"icon": "./assets/images/icon.png",
-		"scheme": "aelis",
+		"scheme": "aris",
 		"userInterfaceStyle": "automatic",
 		"newArchEnabled": true,
 		"ios": {
@@ -15,7 +15,7 @@
 				},
 				"ITSAppUsesNonExemptEncryption": false
 			},
-			"bundleIdentifier": "sh.nym.aelis"
+			"bundleIdentifier": "sh.nym.aris"
 		},
 		"android": {
 			"adaptiveIcon": {
@@ -26,7 +26,7 @@
 			},
 			"edgeToEdgeEnabled": true,
 			"predictiveBackGestureEnabled": false,
-			"package": "sh.nym.aelis"
+			"package": "sh.nym.aris"
 		},
 		"web": {
 			"output": "static",