refactor(google-calendar): remove redundant type aliases

The *TypeType re-exports are unnecessary since
consumers can use import type to get the type.

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

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

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

bun.lock

@@ -89,8 +89,8 @@
         "arktype": "^2.1.0",
       },
     },
-    "packages/aris-source-apple-calendar": {
-      "name": "@aris/source-apple-calendar",
+    "packages/aris-source-caldav": {
+      "name": "@aris/source-caldav",
       "version": "0.0.0",
       "dependencies": {
         "@aris/core": "workspace:*",
@@ -144,7 +144,7 @@
 
     "@aris/data-source-weatherkit": ["@aris/data-source-weatherkit@workspace:packages/aris-data-source-weatherkit"],
 
-    "@aris/source-apple-calendar": ["@aris/source-apple-calendar@workspace:packages/aris-source-apple-calendar"],
+    "@aris/source-caldav": ["@aris/source-caldav@workspace:packages/aris-source-caldav"],
 
     "@aris/source-google-calendar": ["@aris/source-google-calendar@workspace:packages/aris-source-google-calendar"],
 

packages/aris-core/src/feed-engine.ts

@@ -177,7 +177,7 @@ export class FeedEngine<TItems extends FeedItem = FeedItem> {
 			items: processedItems,
 			groupedItems,
 			errors: postProcessorErrors,
-		} = await this.applyPostProcessors(items as TItems[], errors)
+		} = await this.applyPostProcessors(items as TItems[], context, errors)
 
 		const result: FeedResult<TItems> = {
 			context,
@@ -294,16 +294,18 @@ export class FeedEngine<TItems extends FeedItem = FeedItem> {
 
 	private async applyPostProcessors(
 		items: TItems[],
+		context: Context,
 		errors: SourceError[],
 	): Promise<{ items: TItems[]; groupedItems: ItemGroup[]; errors: SourceError[] }> {
 		let currentItems = items
 		const allGroupedItems: ItemGroup[] = []
 		const allErrors = [...errors]
+		const boostScores = new Map<string, number>()
 
 		for (const processor of this.postProcessors) {
 			const snapshot = currentItems
 			try {
-				const enhancement = await processor(currentItems)
+				const enhancement = await processor(currentItems, context)
 
 				if (enhancement.additionalItems?.length) {
 					// Post-processors operate on FeedItem[] without knowledge of TItems.
@@ -321,6 +323,12 @@ export class FeedEngine<TItems extends FeedItem = FeedItem> {
 				if (enhancement.groupedItems?.length) {
 					allGroupedItems.push(...enhancement.groupedItems)
 				}
+
+				if (enhancement.boost) {
+					for (const [id, score] of Object.entries(enhancement.boost)) {
+						boostScores.set(id, (boostScores.get(id) ?? 0) + score)
+					}
+				}
 			} catch (err) {
 				const sourceId = processor.name || "anonymous"
 				allErrors.push({
@@ -331,6 +339,12 @@ export class FeedEngine<TItems extends FeedItem = FeedItem> {
 			}
 		}
 
+		// Apply boost reordering: positive-boost first (desc), then zero, then negative (desc).
+		// Stable sort within each tier preserves original relative order.
+		if (boostScores.size > 0) {
+			currentItems = applyBoostOrder(currentItems, boostScores)
+		}
+
 		// Remove stale item IDs from groups and drop empty groups
 		const itemIds = new Set(currentItems.map((item) => item.id))
 		const validGroups = allGroupedItems.reduce<ItemGroup[]>((acc, group) => {
@@ -399,7 +413,7 @@ export class FeedEngine<TItems extends FeedItem = FeedItem> {
 			items: processedItems,
 			groupedItems,
 			errors: postProcessorErrors,
-		} = await this.applyPostProcessors(items as TItems[], errors)
+		} = await this.applyPostProcessors(items as TItems[], this.context, errors)
 
 		const result: FeedResult<TItems> = {
 			context: this.context,
@@ -486,6 +500,47 @@ export class FeedEngine<TItems extends FeedItem = FeedItem> {
 	}
 }
 
+function clamp(value: number, min: number, max: number): number {
+	return Math.min(max, Math.max(min, value))
+}
+
+function applyBoostOrder<T extends FeedItem>(items: T[], boostScores: Map<string, number>): T[] {
+	const positive: T[] = []
+	const neutral: T[] = []
+	const negative: T[] = []
+
+	for (const item of items) {
+		const raw = boostScores.get(item.id)
+		if (raw === undefined || raw === 0) {
+			neutral.push(item)
+		} else {
+			const clamped = clamp(raw, -1, 1)
+			if (clamped > 0) {
+				positive.push(item)
+			} else if (clamped < 0) {
+				negative.push(item)
+			} else {
+				neutral.push(item)
+			}
+		}
+	}
+
+	// Sort positive descending by boost, negative descending (least negative first, most negative last)
+	positive.sort((a, b) => {
+		const aScore = clamp(boostScores.get(a.id) ?? 0, -1, 1)
+		const bScore = clamp(boostScores.get(b.id) ?? 0, -1, 1)
+		return bScore - aScore
+	})
+
+	negative.sort((a, b) => {
+		const aScore = clamp(boostScores.get(a.id) ?? 0, -1, 1)
+		const bScore = clamp(boostScores.get(b.id) ?? 0, -1, 1)
+		return bScore - aScore
+	})
+
+	return [...positive, ...neutral, ...negative]
+}
+
 function buildGraph(sources: FeedSource[]): SourceGraph {
 	const byId = new Map<string, FeedSource>()
 	for (const source of sources) {

packages/aris-core/src/feed-post-processor.test.ts

@@ -209,6 +209,163 @@ describe("FeedPostProcessor", () => {
 		})
 	})
 
+	// =============================================================================
+	// BOOST
+	// =============================================================================
+
+	describe("boost", () => {
+		test("positive boost moves item before non-boosted items", async () => {
+			const engine = new FeedEngine()
+				.register(createWeatherSource([weatherItem("w1", 20), weatherItem("w2", 25)]))
+				.registerPostProcessor(async () => ({ boost: { w2: 0.8 } }))
+
+			const result = await engine.refresh()
+			expect(result.items.map((i) => i.id)).toEqual(["w2", "w1"])
+		})
+
+		test("negative boost moves item after non-boosted items", async () => {
+			const engine = new FeedEngine()
+				.register(createWeatherSource([weatherItem("w1", 20), weatherItem("w2", 25)]))
+				.registerPostProcessor(async () => ({ boost: { w1: -0.5 } }))
+
+			const result = await engine.refresh()
+			expect(result.items.map((i) => i.id)).toEqual(["w2", "w1"])
+		})
+
+		test("multiple boosted items are sorted by boost descending", async () => {
+			const engine = new FeedEngine()
+				.register(
+					createWeatherSource([
+						weatherItem("w1", 20),
+						weatherItem("w2", 25),
+						weatherItem("w3", 30),
+					]),
+				)
+				.registerPostProcessor(async () => ({
+					boost: { w3: 0.3, w1: 0.9 },
+				}))
+
+			const result = await engine.refresh()
+			// w1 (0.9) first, w3 (0.3) second, w2 (no boost) last
+			expect(result.items.map((i) => i.id)).toEqual(["w1", "w3", "w2"])
+		})
+
+		test("multiple processors accumulate boost scores", async () => {
+			const engine = new FeedEngine()
+				.register(createWeatherSource([weatherItem("w1", 20), weatherItem("w2", 25)]))
+				.registerPostProcessor(async () => ({ boost: { w1: 0.3 } }))
+				.registerPostProcessor(async () => ({ boost: { w1: 0.4 } }))
+
+			const result = await engine.refresh()
+			// w1 accumulated boost = 0.7, moves before w2
+			expect(result.items.map((i) => i.id)).toEqual(["w1", "w2"])
+		})
+
+		test("accumulated boost is clamped to [-1, 1]", async () => {
+			const engine = new FeedEngine()
+				.register(
+					createWeatherSource([
+						weatherItem("w1", 20),
+						weatherItem("w2", 25),
+						weatherItem("w3", 30),
+					]),
+				)
+				.registerPostProcessor(async () => ({ boost: { w1: 0.8, w2: 0.9 } }))
+				.registerPostProcessor(async () => ({ boost: { w1: 0.8 } }))
+
+			const result = await engine.refresh()
+			// w1 accumulated = 1.6 clamped to 1, w2 = 0.9 — w1 still first
+			expect(result.items.map((i) => i.id)).toEqual(["w1", "w2", "w3"])
+		})
+
+		test("out-of-range boost values are clamped", async () => {
+			const engine = new FeedEngine()
+				.register(createWeatherSource([weatherItem("w1", 20), weatherItem("w2", 25)]))
+				.registerPostProcessor(async () => ({ boost: { w1: 5.0 } }))
+
+			const result = await engine.refresh()
+			// Clamped to 1, still boosted to front
+			expect(result.items.map((i) => i.id)).toEqual(["w1", "w2"])
+		})
+
+		test("boosting a suppressed item is a no-op", async () => {
+			const engine = new FeedEngine()
+				.register(createWeatherSource([weatherItem("w1", 20), weatherItem("w2", 25)]))
+				.registerPostProcessor(async () => ({
+					suppress: ["w1"],
+					boost: { w1: 1.0 },
+				}))
+
+			const result = await engine.refresh()
+			expect(result.items).toHaveLength(1)
+			expect(result.items[0].id).toBe("w2")
+		})
+
+		test("boosting a nonexistent item ID is a no-op", async () => {
+			const engine = new FeedEngine()
+				.register(createWeatherSource([weatherItem("w1", 20)]))
+				.registerPostProcessor(async () => ({ boost: { nonexistent: 1.0 } }))
+
+			const result = await engine.refresh()
+			expect(result.items).toHaveLength(1)
+			expect(result.items[0].id).toBe("w1")
+		})
+
+		test("items with equal boost retain original relative order", async () => {
+			const engine = new FeedEngine()
+				.register(
+					createWeatherSource([
+						weatherItem("w1", 20),
+						weatherItem("w2", 25),
+						weatherItem("w3", 30),
+					]),
+				)
+				.registerPostProcessor(async () => ({
+					boost: { w1: 0.5, w3: 0.5 },
+				}))
+
+			const result = await engine.refresh()
+			// w1 and w3 have equal boost — original order preserved: w1 before w3
+			expect(result.items.map((i) => i.id)).toEqual(["w1", "w3", "w2"])
+		})
+
+		test("negative boosts preserve relative order among demoted items", async () => {
+			const engine = new FeedEngine()
+				.register(
+					createWeatherSource([
+						weatherItem("w1", 20),
+						weatherItem("w2", 25),
+						weatherItem("w3", 30),
+					]),
+				)
+				.registerPostProcessor(async () => ({
+					boost: { w1: -0.3, w2: -0.3 },
+				}))
+
+			const result = await engine.refresh()
+			// w3 (neutral) first, then w1 and w2 (equal negative) in original order
+			expect(result.items.map((i) => i.id)).toEqual(["w3", "w1", "w2"])
+		})
+
+		test("boost works alongside additionalItems and groupedItems", async () => {
+			const extra = calendarItem("c1", "Meeting")
+
+			const engine = new FeedEngine()
+				.register(createWeatherSource([weatherItem("w1", 20), weatherItem("w2", 25)]))
+				.registerPostProcessor(async () => ({
+					additionalItems: [extra],
+					boost: { c1: 1.0 },
+					groupedItems: [{ itemIds: ["w1", "c1"], summary: "Related" }],
+				}))
+
+			const result = await engine.refresh()
+			// c1 boosted to front
+			expect(result.items[0].id).toBe("c1")
+			expect(result.items).toHaveLength(3)
+			expect(result.groupedItems).toEqual([{ itemIds: ["w1", "c1"], summary: "Related" }])
+		})
+	})
+
 	// =============================================================================
 	// PIPELINE ORDERING
 	// =============================================================================
@@ -333,12 +490,10 @@ describe("FeedPostProcessor", () => {
 				},
 			}
 
-			const engine = new FeedEngine()
-				.register(source)
-				.registerPostProcessor(async () => {
-					callCount++
-					return {}
-				})
+			const engine = new FeedEngine().register(source).registerPostProcessor(async () => {
+				callCount++
+				return {}
+			})
 
 			engine.start()
 
@@ -377,12 +532,10 @@ describe("FeedPostProcessor", () => {
 				},
 			}
 
-			const engine = new FeedEngine()
-				.register(source)
-				.registerPostProcessor(async () => {
-					callCount++
-					return {}
-				})
+			const engine = new FeedEngine().register(source).registerPostProcessor(async () => {
+				callCount++
+				return {}
+			})
 
 			engine.start()
 

packages/aris-core/src/feed-post-processor.ts

@@ -1,3 +1,4 @@
+import type { Context } from "./context"
 import type { FeedItem } from "./feed"
 
 export interface ItemGroup {
@@ -14,10 +15,12 @@ export interface FeedEnhancement {
 	groupedItems?: ItemGroup[]
 	/** Item IDs to remove from the feed */
 	suppress?: string[]
+	/** Map of item ID to boost score (-1 to 1). Positive promotes, negative demotes. */
+	boost?: Record<string, number>
 }
 
 /**
  * A function that transforms feed items and produces enhancement directives.
  * Use named functions for meaningful error attribution.
  */
-export type FeedPostProcessor = (items: FeedItem[]) => Promise<FeedEnhancement>
+export type FeedPostProcessor = (items: FeedItem[], context: Context) => Promise<FeedEnhancement>

packages/aris-source-apple-calendar/src/calendar-source.ts

@@ -1,252 +0,0 @@
-import type { ActionDefinition, Context, FeedItemSignals, FeedSource } from "@aris/core"
-
-import { TimeRelevance, UnknownActionError } from "@aris/core"
-import { DAVClient } from "tsdav"
-
-import type {
-	CalendarCredentialProvider,
-	CalendarCredentials,
-	CalendarDAVClient,
-	CalendarEventData,
-	CalendarFeedItem,
-} from "./types.ts"
-
-export interface CalendarSourceOptions {
-	/** Number of additional days beyond today to fetch. Default: 0 (today only). */
-	lookAheadDays?: number
-	/** Optional DAVClient instance for testing. Uses tsdav DAVClient by default. */
-	davClient?: CalendarDAVClient
-}
-
-import { CalendarKey, type CalendarContext } from "./calendar-context.ts"
-import { parseICalEvents } from "./ical-parser.ts"
-
-const ICLOUD_CALDAV_URL = "https://caldav.icloud.com"
-const DEFAULT_LOOK_AHEAD_DAYS = 0
-
-/**
- * A FeedSource that fetches Apple Calendar events via CalDAV.
- *
- * Credentials are provided by an injected CalendarCredentialProvider.
- * The server is responsible for managing OAuth tokens and storage.
- *
- * @example
- * ```ts
- * const source = new CalendarSource(credentialProvider, "user-123")
- * const engine = new FeedEngine()
- * engine.register(source)
- * ```
- */
-export class CalendarSource implements FeedSource<CalendarFeedItem> {
-	readonly id = "aris.apple-calendar"
-
-	private readonly credentialProvider: CalendarCredentialProvider
-	private readonly userId: string
-	private readonly lookAheadDays: number
-	private readonly injectedClient: CalendarDAVClient | null
-	private davClient: CalendarDAVClient | null = null
-	private lastAccessToken: string | null = null
-	private cachedEvents: { time: Date; events: CalendarEventData[] } | null = null
-
-	constructor(
-		credentialProvider: CalendarCredentialProvider,
-		userId: string,
-		options?: CalendarSourceOptions,
-	) {
-		this.credentialProvider = credentialProvider
-		this.userId = userId
-		this.lookAheadDays = options?.lookAheadDays ?? DEFAULT_LOOK_AHEAD_DAYS
-		this.injectedClient = options?.davClient ?? null
-	}
-
-	async listActions(): Promise<Record<string, ActionDefinition>> {
-		return {}
-	}
-
-	async executeAction(actionId: string): Promise<void> {
-		throw new UnknownActionError(actionId)
-	}
-
-	async fetchContext(context: Context): Promise<Partial<Context> | null> {
-		const events = await this.fetchEvents(context)
-		if (events.length === 0) {
-			return {
-				[CalendarKey]: {
-					inProgress: [],
-					nextEvent: null,
-					hasTodayEvents: false,
-					todayEventCount: 0,
-				},
-			}
-		}
-
-		const now = context.time
-		const inProgress = events.filter((e) => !e.isAllDay && e.startDate <= now && e.endDate > now)
-
-		const upcoming = events
-			.filter((e) => !e.isAllDay && e.startDate > now)
-			.sort((a, b) => a.startDate.getTime() - b.startDate.getTime())
-
-		const calendarContext: CalendarContext = {
-			inProgress,
-			nextEvent: upcoming[0] ?? null,
-			hasTodayEvents: events.length > 0,
-			todayEventCount: events.length,
-		}
-
-		return { [CalendarKey]: calendarContext }
-	}
-
-	async fetchItems(context: Context): Promise<CalendarFeedItem[]> {
-		const now = context.time
-		const events = await this.fetchEvents(context)
-		return events.map((event) => createFeedItem(event, now))
-	}
-
-	private async fetchEvents(context: Context): Promise<CalendarEventData[]> {
-		if (this.cachedEvents && this.cachedEvents.time === context.time) {
-			return this.cachedEvents.events
-		}
-
-		const credentials = await this.credentialProvider.fetchCredentials(this.userId)
-		if (!credentials) {
-			return []
-		}
-
-		const client = await this.connectClient(credentials)
-		const calendars = await client.fetchCalendars()
-
-		const { start, end } = computeTimeRange(context.time, this.lookAheadDays)
-
-		const results = await Promise.allSettled(
-			calendars.map(async (calendar) => {
-				const objects = await client.fetchCalendarObjects({
-					calendar,
-					timeRange: {
-						start: start.toISOString(),
-						end: end.toISOString(),
-					},
-				})
-				// tsdav types displayName as string | Record<string, unknown> | undefined
-				// because the XML parser can return an object for some responses
-				const calendarName = typeof calendar.displayName === "string" ? calendar.displayName : null
-				return { objects, calendarName }
-			}),
-		)
-
-		const allEvents: CalendarEventData[] = []
-		for (const result of results) {
-			if (result.status !== "fulfilled") continue
-			const { objects, calendarName } = result.value
-			for (const obj of objects) {
-				if (typeof obj.data !== "string") continue
-
-				const events = parseICalEvents(obj.data, calendarName)
-				for (const event of events) {
-					allEvents.push(event)
-				}
-			}
-		}
-
-		this.cachedEvents = { time: context.time, events: allEvents }
-		return allEvents
-	}
-
-	/**
-	 * Returns a ready-to-use DAVClient. Creates and logs in a new client
-	 * on first call; reuses the existing one on subsequent calls, updating
-	 * credentials if the access token has changed.
-	 */
-	private async connectClient(credentials: CalendarCredentials): Promise<CalendarDAVClient> {
-		if (this.injectedClient) {
-			return this.injectedClient
-		}
-
-		const davCredentials = {
-			tokenUrl: credentials.tokenUrl,
-			refreshToken: credentials.refreshToken,
-			accessToken: credentials.accessToken,
-			expiration: credentials.expiresAt,
-			clientId: credentials.clientId,
-			clientSecret: credentials.clientSecret,
-		}
-
-		if (!this.davClient) {
-			this.davClient = new DAVClient({
-				serverUrl: ICLOUD_CALDAV_URL,
-				credentials: davCredentials,
-				authMethod: "Oauth",
-				defaultAccountType: "caldav",
-			})
-			await this.davClient.login()
-			this.lastAccessToken = credentials.accessToken
-			return this.davClient
-		}
-
-		if (credentials.accessToken !== this.lastAccessToken) {
-			this.davClient.credentials = davCredentials
-			this.lastAccessToken = credentials.accessToken
-		}
-
-		return this.davClient
-	}
-}
-
-function computeTimeRange(now: Date, lookAheadDays: number): { start: Date; end: Date } {
-	const start = new Date(now)
-	start.setUTCHours(0, 0, 0, 0)
-
-	const end = new Date(start)
-	end.setUTCDate(end.getUTCDate() + 1 + lookAheadDays)
-
-	return { start, end }
-}
-
-export function computeSignals(event: CalendarEventData, now: Date): FeedItemSignals {
-	if (event.isAllDay) {
-		return { urgency: 0.3, timeRelevance: TimeRelevance.Ambient }
-	}
-
-	const msUntilStart = event.startDate.getTime() - now.getTime()
-
-	// Event already started
-	if (msUntilStart < 0) {
-		const isInProgress = now.getTime() < event.endDate.getTime()
-		return isInProgress
-			? { urgency: 0.8, timeRelevance: TimeRelevance.Imminent }
-			: { urgency: 0.2, timeRelevance: TimeRelevance.Ambient }
-	}
-
-	// Starting within 30 minutes
-	if (msUntilStart <= 30 * 60 * 1000) {
-		return { urgency: 0.9, timeRelevance: TimeRelevance.Imminent }
-	}
-
-	// Starting within 2 hours
-	if (msUntilStart <= 2 * 60 * 60 * 1000) {
-		return { urgency: 0.7, timeRelevance: TimeRelevance.Upcoming }
-	}
-
-	// Later today
-	const startOfDay = new Date(now)
-	startOfDay.setUTCHours(0, 0, 0, 0)
-	const endOfDay = new Date(startOfDay)
-	endOfDay.setUTCDate(endOfDay.getUTCDate() + 1)
-
-	if (event.startDate.getTime() < endOfDay.getTime()) {
-		return { urgency: 0.5, timeRelevance: TimeRelevance.Upcoming }
-	}
-
-	// Future days
-	return { urgency: 0.2, timeRelevance: TimeRelevance.Ambient }
-}
-
-function createFeedItem(event: CalendarEventData, now: Date): CalendarFeedItem {
-	return {
-		id: `calendar-event-${event.uid}${event.recurrenceId ? `-${event.recurrenceId}` : ""}`,
-		type: "calendar-event",
-		timestamp: now,
-		data: event,
-		signals: computeSignals(event, now),
-	}
-}

packages/aris-source-apple-calendar/src/index.ts

@@ -1,16 +0,0 @@
-export { CalendarKey, type CalendarContext } from "./calendar-context.ts"
-export { CalendarSource, type CalendarSourceOptions } from "./calendar-source.ts"
-export {
-	CalendarEventStatus,
-	AttendeeRole,
-	AttendeeStatus,
-	type CalendarCredentials,
-	type CalendarCredentialProvider,
-	type CalendarDAVClient,
-	type CalendarDAVCalendar,
-	type CalendarDAVObject,
-	type CalendarAttendee,
-	type CalendarAlarm,
-	type CalendarEventData,
-	type CalendarFeedItem,
-} from "./types.ts"

packages/aris-source-caldav/README.md

@@ -0,0 +1,58 @@
+# @aris/source-caldav
+
+A FeedSource that fetches calendar events from any CalDAV server.
+
+## Usage
+
+```ts
+import { CalDavSource } from "@aris/source-caldav"
+
+// Basic auth (Nextcloud, Radicale, Baikal, iCloud, etc.)
+const source = new CalDavSource({
+	serverUrl: "https://caldav.example.com",
+	authMethod: "basic",
+	username: "user",
+	password: "pass",
+	lookAheadDays: 7, // optional, default: 0 (today only)
+	timeZone: "America/New_York", // optional, default: UTC
+})
+
+// OAuth
+const source = new CalDavSource({
+	serverUrl: "https://caldav.provider.com",
+	authMethod: "oauth",
+	accessToken: "...",
+	refreshToken: "...",
+	tokenUrl: "https://provider.com/oauth/token",
+})
+```
+
+### iCloud
+
+Use your Apple ID email as the username and an [app-specific password](https://support.apple.com/en-us/102654):
+
+```ts
+const source = new CalDavSource({
+	serverUrl: "https://caldav.icloud.com",
+	authMethod: "basic",
+	username: "you@icloud.com",
+	password: "<app-specific-password>",
+})
+```
+
+## Testing
+
+```bash
+bun test
+```
+
+### Live test
+
+`bun run test:live` connects to a real CalDAV server and prints all events to the console. It prompts for:
+
+- **CalDAV server URL** — e.g. `https://caldav.icloud.com`
+- **Username** — your account email
+- **Password** — your password (or app-specific password for iCloud)
+- **Look-ahead days** — how many days beyond today to fetch (default: 0)
+
+The script runs both `fetchContext` and `fetchItems`, printing the calendar context (in-progress events, next event, today's count) followed by each event with its title, time, location, signals, and attendees.

packages/aris-source-caldav/package.json

@@ -1,11 +1,12 @@
 {
-	"name": "@aris/source-apple-calendar",
+	"name": "@aris/source-caldav",
 	"version": "0.0.0",
 	"type": "module",
 	"main": "src/index.ts",
 	"types": "src/index.ts",
 	"scripts": {
-		"test": "bun test ."
+		"test": "bun test .",
+		"test:live": "bun run scripts/test-live.ts"
 	},
 	"dependencies": {
 		"@aris/core": "workspace:*",

packages/aris-source-caldav/scripts/test-live.ts

@@ -0,0 +1,62 @@
+/**
+ * Live test script for CalDavSource.
+ *
+ * Usage:
+ *   bun run test-live.ts
+ */
+
+import { CalDavSource } from "../src/index.ts"
+
+const serverUrl = prompt("CalDAV server URL:")
+const username = prompt("Username:")
+const password = prompt("Password:")
+const lookAheadRaw = prompt("Look-ahead days (default 0):")
+
+if (!serverUrl || !username || !password) {
+	console.error("Server URL, username, and password are required.")
+	process.exit(1)
+}
+
+const lookAheadDays = Number(lookAheadRaw) || 0
+
+const source = new CalDavSource({
+	serverUrl,
+	authMethod: "basic",
+	username,
+	password,
+	lookAheadDays,
+})
+
+const context = { time: new Date() }
+
+console.log(`\nFetching from ${serverUrl} as ${username} (lookAheadDays=${lookAheadDays})...\n`)
+
+const contextResult = await source.fetchContext(context)
+const items = await source.fetchItems(context)
+
+console.log("=== Context ===")
+console.log(JSON.stringify(contextResult, null, 2))
+
+console.log(`\n=== Feed Items (${items.length}) ===`)
+for (const item of items) {
+	console.log(`\n--- ${item.data.title} ---`)
+	console.log(`  ID:         ${item.id}`)
+	console.log(`  Calendar:   ${item.data.calendarName ?? "(unknown)"}`)
+	console.log(`  Start:      ${item.data.startDate.toISOString()}`)
+	console.log(`  End:        ${item.data.endDate.toISOString()}`)
+	console.log(`  All-day:    ${item.data.isAllDay}`)
+	console.log(`  Location:   ${item.data.location ?? "(none)"}`)
+	console.log(`  Status:     ${item.data.status ?? "(none)"}`)
+	console.log(`  Urgency:    ${item.signals?.urgency}`)
+	console.log(`  Relevance:  ${item.signals?.timeRelevance}`)
+	if (item.data.attendees.length > 0) {
+		console.log(`  Attendees:  ${item.data.attendees.map((a) => a.name ?? a.email).join(", ")}`)
+	}
+	if (item.data.description) {
+		console.log(`  Desc:       ${item.data.description.slice(0, 100)}`)
+	}
+}
+
+if (items.length === 0) {
+	console.log("(no events found in the time window)")
+}

packages/aris-source-caldav/src/caldav-source.test.ts

@@ -6,16 +6,14 @@ import { readFileSync } from "node:fs"
 import { join } from "node:path"
 
 import type {
-	CalendarCredentialProvider,
-	CalendarCredentials,
-	CalendarDAVCalendar,
-	CalendarDAVClient,
-	CalendarDAVObject,
-	CalendarEventData,
+	CalDavDAVCalendar,
+	CalDavDAVClient,
+	CalDavDAVObject,
+	CalDavEventData,
 } from "./types.ts"
 
-import { CalendarKey } from "./calendar-context.ts"
-import { CalendarSource, computeSignals } from "./calendar-source.ts"
+import { CalDavSource, computeSignals } from "./caldav-source.ts"
+import { CalDavCalendarKey } from "./calendar-context.ts"
 
 function loadFixture(name: string): string {
 	return readFileSync(join(import.meta.dir, "..", "fixtures", name), "utf-8")
@@ -25,36 +23,16 @@ function createContext(time: Date): Context {
 	return { time }
 }
 
-const mockCredentials: CalendarCredentials = {
-	accessToken: "mock-access-token",
-	refreshToken: "mock-refresh-token",
-	expiresAt: Date.now() + 3600000,
-	tokenUrl: "https://appleid.apple.com/auth/token",
-	clientId: "com.example.aris",
-	clientSecret: "mock-secret",
-}
-
-class NullCredentialProvider implements CalendarCredentialProvider {
-	async fetchCredentials(_userId: string): Promise<CalendarCredentials | null> {
-		return null
-	}
-}
-
-class MockCredentialProvider implements CalendarCredentialProvider {
-	async fetchCredentials(_userId: string): Promise<CalendarCredentials | null> {
-		return mockCredentials
-	}
-}
-
-class MockDAVClient implements CalendarDAVClient {
+class MockDAVClient implements CalDavDAVClient {
 	credentials: Record<string, unknown> = {}
 	fetchCalendarsCallCount = 0
-	private calendars: CalendarDAVCalendar[]
-	private objectsByCalendarUrl: Record<string, CalendarDAVObject[]>
+	lastTimeRange: { start: string; end: string } | null = null
+	private calendars: CalDavDAVCalendar[]
+	private objectsByCalendarUrl: Record<string, CalDavDAVObject[]>
 
 	constructor(
-		calendars: CalendarDAVCalendar[],
-		objectsByCalendarUrl: Record<string, CalendarDAVObject[]>,
+		calendars: CalDavDAVCalendar[],
+		objectsByCalendarUrl: Record<string, CalDavDAVObject[]>,
 	) {
 		this.calendars = calendars
 		this.objectsByCalendarUrl = objectsByCalendarUrl
@@ -62,54 +40,57 @@ class MockDAVClient implements CalendarDAVClient {
 
 	async login(): Promise<void> {}
 
-	async fetchCalendars(): Promise<CalendarDAVCalendar[]> {
+	async fetchCalendars(): Promise<CalDavDAVCalendar[]> {
 		this.fetchCalendarsCallCount++
 		return this.calendars
 	}
 
 	async fetchCalendarObjects(params: {
-		calendar: CalendarDAVCalendar
+		calendar: CalDavDAVCalendar
 		timeRange: { start: string; end: string }
-	}): Promise<CalendarDAVObject[]> {
+	}): Promise<CalDavDAVObject[]> {
+		this.lastTimeRange = params.timeRange
 		return this.objectsByCalendarUrl[params.calendar.url] ?? []
 	}
 }
 
-describe("CalendarSource", () => {
-	test("has correct id", () => {
-		const source = new CalendarSource(new NullCredentialProvider(), "user-1")
-		expect(source.id).toBe("aris.apple-calendar")
+function createSource(client: MockDAVClient, lookAheadDays?: number): CalDavSource {
+	return new CalDavSource({
+		serverUrl: "https://caldav.example.com",
+		authMethod: "basic",
+		username: "user",
+		password: "pass",
+		davClient: client,
+		lookAheadDays,
 	})
+}
 
-	test("returns empty array when credentials are null", async () => {
-		const source = new CalendarSource(new NullCredentialProvider(), "user-1")
-		const items = await source.fetchItems(createContext(new Date("2026-01-15T12:00:00Z")))
-		expect(items).toEqual([])
+describe("CalDavSource", () => {
+	test("has correct id", () => {
+		const client = new MockDAVClient([], {})
+		const source = createSource(client)
+		expect(source.id).toBe("aris.caldav")
 	})
 
 	test("returns empty array when no calendars exist", async () => {
 		const client = new MockDAVClient([], {})
-		const source = new CalendarSource(new MockCredentialProvider(), "user-1", {
-			davClient: client,
-		})
+		const source = createSource(client)
 		const items = await source.fetchItems(createContext(new Date("2026-01-15T12:00:00Z")))
 		expect(items).toEqual([])
 	})
 
 	test("returns feed items from a single calendar", async () => {
-		const objects: Record<string, CalendarDAVObject[]> = {
+		const objects: Record<string, CalDavDAVObject[]> = {
 			"/cal/work": [{ url: "/cal/work/event1.ics", data: loadFixture("single-event.ics") }],
 		}
 		const client = new MockDAVClient([{ url: "/cal/work", displayName: "Work" }], objects)
-		const source = new CalendarSource(new MockCredentialProvider(), "user-1", {
-			davClient: client,
-		})
+		const source = createSource(client)
 
 		const items = await source.fetchItems(createContext(new Date("2026-01-15T12:00:00Z")))
 
 		expect(items).toHaveLength(1)
-		expect(items[0]!.type).toBe("calendar-event")
-		expect(items[0]!.id).toBe("calendar-event-single-event-001@test")
+		expect(items[0]!.type).toBe("caldav-event")
+		expect(items[0]!.id).toBe("caldav-event-single-event-001@test")
 		expect(items[0]!.data.title).toBe("Team Standup")
 		expect(items[0]!.data.location).toBe("Conference Room A")
 		expect(items[0]!.data.calendarName).toBe("Work")
@@ -118,7 +99,7 @@ describe("CalendarSource", () => {
 	})
 
 	test("returns feed items from multiple calendars", async () => {
-		const objects: Record<string, CalendarDAVObject[]> = {
+		const objects: Record<string, CalDavDAVObject[]> = {
 			"/cal/work": [{ url: "/cal/work/event1.ics", data: loadFixture("single-event.ics") }],
 			"/cal/personal": [
 				{
@@ -134,9 +115,7 @@ describe("CalendarSource", () => {
 			],
 			objects,
 		)
-		const source = new CalendarSource(new MockCredentialProvider(), "user-1", {
-			davClient: client,
-		})
+		const source = createSource(client)
 
 		const items = await source.fetchItems(createContext(new Date("2026-01-15T12:00:00Z")))
 
@@ -154,7 +133,7 @@ describe("CalendarSource", () => {
 	})
 
 	test("skips objects with non-string data", async () => {
-		const objects: Record<string, CalendarDAVObject[]> = {
+		const objects: Record<string, CalDavDAVObject[]> = {
 			"/cal/work": [
 				{ url: "/cal/work/event1.ics", data: loadFixture("single-event.ics") },
 				{ url: "/cal/work/bad.ics", data: 12345 },
@@ -162,9 +141,7 @@ describe("CalendarSource", () => {
 			],
 		}
 		const client = new MockDAVClient([{ url: "/cal/work", displayName: "Work" }], objects)
-		const source = new CalendarSource(new MockCredentialProvider(), "user-1", {
-			davClient: client,
-		})
+		const source = createSource(client)
 
 		const items = await source.fetchItems(createContext(new Date("2026-01-15T12:00:00Z")))
 		expect(items).toHaveLength(1)
@@ -172,13 +149,11 @@ describe("CalendarSource", () => {
 	})
 
 	test("uses context time as feed item timestamp", async () => {
-		const objects: Record<string, CalendarDAVObject[]> = {
+		const objects: Record<string, CalDavDAVObject[]> = {
 			"/cal/work": [{ url: "/cal/work/event1.ics", data: loadFixture("single-event.ics") }],
 		}
 		const client = new MockDAVClient([{ url: "/cal/work", displayName: "Work" }], objects)
-		const source = new CalendarSource(new MockCredentialProvider(), "user-1", {
-			davClient: client,
-		})
+		const source = createSource(client)
 
 		const now = new Date("2026-01-15T12:00:00Z")
 		const items = await source.fetchItems(createContext(now))
@@ -186,16 +161,14 @@ describe("CalendarSource", () => {
 	})
 
 	test("assigns signals based on event proximity", async () => {
-		const objects: Record<string, CalendarDAVObject[]> = {
+		const objects: Record<string, CalDavDAVObject[]> = {
 			"/cal/work": [
 				{ url: "/cal/work/event1.ics", data: loadFixture("single-event.ics") },
 				{ url: "/cal/work/allday.ics", data: loadFixture("all-day-event.ics") },
 			],
 		}
 		const client = new MockDAVClient([{ url: "/cal/work", displayName: "Work" }], objects)
-		const source = new CalendarSource(new MockCredentialProvider(), "user-1", {
-			davClient: client,
-		})
+		const source = createSource(client)
 
 		// 2 hours before the event at 14:00
 		const items = await source.fetchItems(createContext(new Date("2026-01-15T12:00:00Z")))
@@ -210,7 +183,7 @@ describe("CalendarSource", () => {
 	})
 
 	test("handles calendar with non-string displayName", async () => {
-		const objects: Record<string, CalendarDAVObject[]> = {
+		const objects: Record<string, CalDavDAVObject[]> = {
 			"/cal/weird": [
 				{
 					url: "/cal/weird/event1.ics",
@@ -222,16 +195,14 @@ describe("CalendarSource", () => {
 			[{ url: "/cal/weird", displayName: { _cdata: "Weird Calendar" } }],
 			objects,
 		)
-		const source = new CalendarSource(new MockCredentialProvider(), "user-1", {
-			davClient: client,
-		})
+		const source = createSource(client)
 
 		const items = await source.fetchItems(createContext(new Date("2026-01-15T12:00:00Z")))
 		expect(items[0]!.data.calendarName).toBeNull()
 	})
 
 	test("handles recurring events with exceptions", async () => {
-		const objects: Record<string, CalendarDAVObject[]> = {
+		const objects: Record<string, CalDavDAVObject[]> = {
 			"/cal/work": [
 				{
 					url: "/cal/work/recurring.ics",
@@ -240,9 +211,7 @@ describe("CalendarSource", () => {
 			],
 		}
 		const client = new MockDAVClient([{ url: "/cal/work", displayName: "Work" }], objects)
-		const source = new CalendarSource(new MockCredentialProvider(), "user-1", {
-			davClient: client,
-		})
+		const source = createSource(client)
 
 		const items = await source.fetchItems(createContext(new Date("2026-01-15T08:00:00Z")))
 
@@ -260,13 +229,11 @@ describe("CalendarSource", () => {
 	})
 
 	test("caches events within the same refresh cycle", async () => {
-		const objects: Record<string, CalendarDAVObject[]> = {
+		const objects: Record<string, CalDavDAVObject[]> = {
 			"/cal/work": [{ url: "/cal/work/event1.ics", data: loadFixture("single-event.ics") }],
 		}
 		const client = new MockDAVClient([{ url: "/cal/work", displayName: "Work" }], objects)
-		const source = new CalendarSource(new MockCredentialProvider(), "user-1", {
-			davClient: client,
-		})
+		const source = createSource(client)
 
 		const context = createContext(new Date("2026-01-15T12:00:00Z"))
 
@@ -277,15 +244,52 @@ describe("CalendarSource", () => {
 		expect(client.fetchCalendarsCallCount).toBe(1)
 	})
 
-	test("refetches events for a different context time", async () => {
-		const objects: Record<string, CalendarDAVObject[]> = {
+	test("uses timezone for time range when provided", async () => {
+		const objects: Record<string, CalDavDAVObject[]> = {
 			"/cal/work": [{ url: "/cal/work/event1.ics", data: loadFixture("single-event.ics") }],
 		}
 		const client = new MockDAVClient([{ url: "/cal/work", displayName: "Work" }], objects)
-		const source = new CalendarSource(new MockCredentialProvider(), "user-1", {
+
+		// 2026-01-15T22:00:00Z = 2026-01-16T09:00:00 in Australia/Sydney (AEDT, UTC+11)
+		const source = new CalDavSource({
+			serverUrl: "https://caldav.example.com",
+			authMethod: "basic",
+			username: "user",
+			password: "pass",
 			davClient: client,
+			timeZone: "Australia/Sydney",
 		})
 
+		await source.fetchItems(createContext(new Date("2026-01-15T22:00:00Z")))
+
+		// "Today" in Sydney is Jan 16, so start should be Jan 15 13:00 UTC (midnight Jan 16 AEDT)
+		expect(client.lastTimeRange).not.toBeNull()
+		expect(client.lastTimeRange!.start).toBe("2026-01-15T13:00:00.000Z")
+		// End should be Jan 16 13:00 UTC (midnight Jan 17 AEDT) — 1 day window
+		expect(client.lastTimeRange!.end).toBe("2026-01-16T13:00:00.000Z")
+	})
+
+	test("defaults to UTC midnight when no timezone provided", async () => {
+		const objects: Record<string, CalDavDAVObject[]> = {
+			"/cal/work": [{ url: "/cal/work/event1.ics", data: loadFixture("single-event.ics") }],
+		}
+		const client = new MockDAVClient([{ url: "/cal/work", displayName: "Work" }], objects)
+		const source = createSource(client)
+
+		await source.fetchItems(createContext(new Date("2026-01-15T22:00:00Z")))
+
+		expect(client.lastTimeRange).not.toBeNull()
+		expect(client.lastTimeRange!.start).toBe("2026-01-15T00:00:00.000Z")
+		expect(client.lastTimeRange!.end).toBe("2026-01-16T00:00:00.000Z")
+	})
+
+	test("refetches events for a different context time", async () => {
+		const objects: Record<string, CalDavDAVObject[]> = {
+			"/cal/work": [{ url: "/cal/work/event1.ics", data: loadFixture("single-event.ics") }],
+		}
+		const client = new MockDAVClient([{ url: "/cal/work", displayName: "Work" }], objects)
+		const source = createSource(client)
+
 		await source.fetchItems(createContext(new Date("2026-01-15T12:00:00Z")))
 		await source.fetchItems(createContext(new Date("2026-01-15T13:00:00Z")))
 
@@ -294,11 +298,12 @@ describe("CalendarSource", () => {
 	})
 })
 
-describe("CalendarSource.fetchContext", () => {
-	test("returns empty context when credentials are null", async () => {
-		const source = new CalendarSource(new NullCredentialProvider(), "user-1")
+describe("CalDavSource.fetchContext", () => {
+	test("returns empty context when no calendars exist", async () => {
+		const client = new MockDAVClient([], {})
+		const source = createSource(client)
 		const ctx = await source.fetchContext(createContext(new Date("2026-01-15T12:00:00Z")))
-		const calendar = contextValue(ctx as Context, CalendarKey)
+		const calendar = contextValue(ctx as Context, CalDavCalendarKey)
 
 		expect(calendar).toBeDefined()
 		expect(calendar!.inProgress).toEqual([])
@@ -308,34 +313,30 @@ describe("CalendarSource.fetchContext", () => {
 	})
 
 	test("identifies in-progress events", async () => {
-		const objects: Record<string, CalendarDAVObject[]> = {
+		const objects: Record<string, CalDavDAVObject[]> = {
 			"/cal/work": [{ url: "/cal/work/event1.ics", data: loadFixture("single-event.ics") }],
 		}
 		const client = new MockDAVClient([{ url: "/cal/work", displayName: "Work" }], objects)
-		const source = new CalendarSource(new MockCredentialProvider(), "user-1", {
-			davClient: client,
-		})
+		const source = createSource(client)
 
 		// 14:30 is during the 14:00-15:00 event
 		const ctx = await source.fetchContext(createContext(new Date("2026-01-15T14:30:00Z")))
-		const calendar = contextValue(ctx as Context, CalendarKey)
+		const calendar = contextValue(ctx as Context, CalDavCalendarKey)
 
 		expect(calendar!.inProgress).toHaveLength(1)
 		expect(calendar!.inProgress[0]!.title).toBe("Team Standup")
 	})
 
 	test("identifies next upcoming event", async () => {
-		const objects: Record<string, CalendarDAVObject[]> = {
+		const objects: Record<string, CalDavDAVObject[]> = {
 			"/cal/work": [{ url: "/cal/work/event1.ics", data: loadFixture("single-event.ics") }],
 		}
 		const client = new MockDAVClient([{ url: "/cal/work", displayName: "Work" }], objects)
-		const source = new CalendarSource(new MockCredentialProvider(), "user-1", {
-			davClient: client,
-		})
+		const source = createSource(client)
 
 		// 12:00 is before the 14:00 event
 		const ctx = await source.fetchContext(createContext(new Date("2026-01-15T12:00:00Z")))
-		const calendar = contextValue(ctx as Context, CalendarKey)
+		const calendar = contextValue(ctx as Context, CalDavCalendarKey)
 
 		expect(calendar!.inProgress).toHaveLength(0)
 		expect(calendar!.nextEvent).not.toBeNull()
@@ -343,16 +344,14 @@ describe("CalendarSource.fetchContext", () => {
 	})
 
 	test("excludes all-day events from inProgress and nextEvent", async () => {
-		const objects: Record<string, CalendarDAVObject[]> = {
+		const objects: Record<string, CalDavDAVObject[]> = {
 			"/cal/work": [{ url: "/cal/work/allday.ics", data: loadFixture("all-day-event.ics") }],
 		}
 		const client = new MockDAVClient([{ url: "/cal/work", displayName: "Work" }], objects)
-		const source = new CalendarSource(new MockCredentialProvider(), "user-1", {
-			davClient: client,
-		})
+		const source = createSource(client)
 
 		const ctx = await source.fetchContext(createContext(new Date("2026-01-15T12:00:00Z")))
-		const calendar = contextValue(ctx as Context, CalendarKey)
+		const calendar = contextValue(ctx as Context, CalDavCalendarKey)
 
 		expect(calendar!.inProgress).toHaveLength(0)
 		expect(calendar!.nextEvent).toBeNull()
@@ -361,19 +360,17 @@ describe("CalendarSource.fetchContext", () => {
 	})
 
 	test("counts all events including all-day in todayEventCount", async () => {
-		const objects: Record<string, CalendarDAVObject[]> = {
+		const objects: Record<string, CalDavDAVObject[]> = {
 			"/cal/work": [
 				{ url: "/cal/work/event1.ics", data: loadFixture("single-event.ics") },
 				{ url: "/cal/work/allday.ics", data: loadFixture("all-day-event.ics") },
 			],
 		}
 		const client = new MockDAVClient([{ url: "/cal/work", displayName: "Work" }], objects)
-		const source = new CalendarSource(new MockCredentialProvider(), "user-1", {
-			davClient: client,
-		})
+		const source = createSource(client)
 
 		const ctx = await source.fetchContext(createContext(new Date("2026-01-15T12:00:00Z")))
-		const calendar = contextValue(ctx as Context, CalendarKey)
+		const calendar = contextValue(ctx as Context, CalDavCalendarKey)
 
 		expect(calendar!.todayEventCount).toBe(2)
 		expect(calendar!.hasTodayEvents).toBe(true)
@@ -383,7 +380,7 @@ describe("CalendarSource.fetchContext", () => {
 describe("computeSignals", () => {
 	const now = new Date("2026-01-15T12:00:00Z")
 
-	function makeEvent(overrides: Partial<CalendarEventData>): CalendarEventData {
+	function makeEvent(overrides: Partial<CalDavEventData>): CalDavEventData {
 		return {
 			uid: "test-uid",
 			title: "Test",
@@ -482,4 +479,29 @@ describe("computeSignals", () => {
 		})
 		expect(computeSignals(event2h1m, now).urgency).toBe(0.5)
 	})
+
+	test("cancelled events get urgency 0.1 regardless of timing", () => {
+		const event = makeEvent({
+			status: "cancelled",
+			startDate: new Date("2026-01-15T12:20:00Z"), // would be 0.9 if not cancelled
+		})
+		const signals = computeSignals(event, now)
+		expect(signals.urgency).toBe(0.1)
+		expect(signals.timeRelevance).toBe(TimeRelevance.Ambient)
+	})
+
+	test("uses timezone for 'later today' boundary", () => {
+		// now = 2026-01-15T12:00:00Z = 2026-01-15T21:00:00 JST (UTC+9)
+		// event at 2026-01-15T15:30:00Z = 2026-01-16T00:30:00 JST — next day in JST
+		const event = makeEvent({
+			startDate: new Date("2026-01-15T15:30:00Z"),
+		})
+
+		// Without timezone: UTC day ends at 2026-01-16T00:00:00Z, event is before that → "later today"
+		expect(computeSignals(event, now).urgency).toBe(0.5)
+
+		// With Asia/Tokyo: local day ends at 2026-01-15T15:00:00Z (midnight Jan 16 JST),
+		// event is after that → "future days"
+		expect(computeSignals(event, now, "Asia/Tokyo").urgency).toBe(0.2)
+	})
 })

packages/aris-source-caldav/src/caldav-source.ts

@@ -0,0 +1,348 @@
+import type { ActionDefinition, Context, FeedItemSignals, FeedSource } from "@aris/core"
+
+import { TimeRelevance, UnknownActionError } from "@aris/core"
+import { DAVClient } from "tsdav"
+
+import type { CalDavDAVClient, CalDavEventData, CalDavFeedItem } from "./types.ts"
+import { CalDavEventStatus } from "./types.ts"
+
+import { CalDavCalendarKey, type CalendarContext } from "./calendar-context.ts"
+import { parseICalEvents } from "./ical-parser.ts"
+
+// -- Source options --
+
+interface CalDavSourceBaseOptions {
+	serverUrl: string
+	/** Number of additional days beyond today to fetch. Default: 0 (today only). */
+	lookAheadDays?: number
+	/** IANA timezone for determining "today" (e.g. "America/New_York"). Default: UTC. */
+	timeZone?: string
+	/** Optional DAV client for testing. */
+	davClient?: CalDavDAVClient
+}
+
+interface CalDavSourceBasicAuthOptions extends CalDavSourceBaseOptions {
+	authMethod: "basic"
+	username: string
+	password: string
+}
+
+interface CalDavSourceOAuthOptions extends CalDavSourceBaseOptions {
+	authMethod: "oauth"
+	accessToken: string
+	refreshToken: string
+	tokenUrl: string
+	expiration?: number
+	clientId?: string
+	clientSecret?: string
+}
+
+export type CalDavSourceOptions = CalDavSourceBasicAuthOptions | CalDavSourceOAuthOptions
+
+const DEFAULT_LOOK_AHEAD_DAYS = 0
+
+/**
+ * A FeedSource that fetches calendar events from any CalDAV server.
+ *
+ * Supports Basic auth (username/password) and OAuth (access token + refresh token).
+ * The server URL is provided at construction time.
+ *
+ * @example
+ * ```ts
+ * // Basic auth (self-hosted servers)
+ * const source = new CalDavSource({
+ *   serverUrl: "https://nextcloud.example.com/remote.php/dav",
+ *   authMethod: "basic",
+ *   username: "user",
+ *   password: "pass",
+ * })
+ *
+ * // OAuth (cloud providers)
+ * const source = new CalDavSource({
+ *   serverUrl: "https://caldav.provider.com",
+ *   authMethod: "oauth",
+ *   accessToken: "...",
+ *   refreshToken: "...",
+ *   tokenUrl: "https://provider.com/oauth/token",
+ * })
+ * ```
+ */
+export class CalDavSource implements FeedSource<CalDavFeedItem> {
+	readonly id = "aris.caldav"
+
+	private options: CalDavSourceOptions | null
+	private readonly lookAheadDays: number
+	private readonly timeZone: string | undefined
+	private readonly injectedClient: CalDavDAVClient | null
+	private clientPromise: Promise<CalDavDAVClient> | null = null
+	private cachedEvents: { time: Date; events: CalDavEventData[] } | null = null
+	private pendingFetch: { time: Date; promise: Promise<CalDavEventData[]> } | null = null
+
+	constructor(options: CalDavSourceOptions) {
+		this.options = options
+		this.lookAheadDays = options.lookAheadDays ?? DEFAULT_LOOK_AHEAD_DAYS
+		this.timeZone = options.timeZone
+		this.injectedClient = options.davClient ?? null
+	}
+
+	async listActions(): Promise<Record<string, ActionDefinition>> {
+		return {}
+	}
+
+	async executeAction(actionId: string): Promise<void> {
+		throw new UnknownActionError(actionId)
+	}
+
+	async fetchContext(context: Context): Promise<Partial<Context> | null> {
+		const events = await this.fetchEvents(context)
+		if (events.length === 0) {
+			return {
+				[CalDavCalendarKey]: {
+					inProgress: [],
+					nextEvent: null,
+					hasTodayEvents: false,
+					todayEventCount: 0,
+				},
+			}
+		}
+
+		const now = context.time
+		const active = events.filter((e) => e.status !== CalDavEventStatus.Cancelled)
+		const inProgress = active.filter((e) => !e.isAllDay && e.startDate <= now && e.endDate > now)
+
+		const upcoming = active
+			.filter((e) => !e.isAllDay && e.startDate > now)
+			.sort((a, b) => a.startDate.getTime() - b.startDate.getTime())
+
+		const calendarContext: CalendarContext = {
+			inProgress,
+			nextEvent: upcoming[0] ?? null,
+			hasTodayEvents: events.length > 0,
+			todayEventCount: events.length,
+		}
+
+		return { [CalDavCalendarKey]: calendarContext }
+	}
+
+	async fetchItems(context: Context): Promise<CalDavFeedItem[]> {
+		const now = context.time
+		const events = await this.fetchEvents(context)
+		return events.map((event) => createFeedItem(event, now, this.timeZone))
+	}
+
+	private fetchEvents(context: Context): Promise<CalDavEventData[]> {
+		if (this.cachedEvents && this.cachedEvents.time === context.time) {
+			return Promise.resolve(this.cachedEvents.events)
+		}
+
+		// Deduplicate concurrent fetches for the same context.time reference
+		if (this.pendingFetch && this.pendingFetch.time === context.time) {
+			return this.pendingFetch.promise
+		}
+
+		const promise = this.doFetchEvents(context).finally(() => {
+			if (this.pendingFetch?.promise === promise) {
+				this.pendingFetch = null
+			}
+		})
+
+		this.pendingFetch = { time: context.time, promise }
+		return promise
+	}
+
+	private async doFetchEvents(context: Context): Promise<CalDavEventData[]> {
+		const client = await this.connectClient()
+		const calendars = await client.fetchCalendars()
+
+		const { start, end } = computeTimeRange(context.time, this.lookAheadDays, this.timeZone)
+
+		const results = await Promise.allSettled(
+			calendars.map(async (calendar) => {
+				const objects = await client.fetchCalendarObjects({
+					calendar,
+					timeRange: {
+						start: start.toISOString(),
+						end: end.toISOString(),
+					},
+				})
+				// tsdav types displayName as string | Record<string, unknown> | undefined
+				const calendarName = typeof calendar.displayName === "string" ? calendar.displayName : null
+				return { objects, calendarName }
+			}),
+		)
+
+		const allEvents: CalDavEventData[] = []
+		for (const result of results) {
+			if (result.status === "rejected") {
+				console.warn("[aris.caldav] Failed to fetch calendar:", result.reason)
+				continue
+			}
+			const { objects, calendarName } = result.value
+			for (const obj of objects) {
+				if (typeof obj.data !== "string") continue
+
+				const events = parseICalEvents(obj.data, calendarName)
+				for (const event of events) {
+					allEvents.push(event)
+				}
+			}
+		}
+
+		this.cachedEvents = { time: context.time, events: allEvents }
+		return allEvents
+	}
+
+	private connectClient(): Promise<CalDavDAVClient> {
+		if (this.injectedClient) {
+			return Promise.resolve(this.injectedClient)
+		}
+
+		if (!this.clientPromise) {
+			this.clientPromise = this.createAndLoginClient().catch((err) => {
+				this.clientPromise = null
+				throw err
+			})
+		}
+
+		return this.clientPromise
+	}
+
+	private async createAndLoginClient(): Promise<CalDavDAVClient> {
+		const opts = this.options
+		if (!opts) {
+			throw new Error("CalDavSource options have already been consumed")
+		}
+
+		let client: CalDavDAVClient
+
+		if (opts.authMethod === "basic") {
+			client = new DAVClient({
+				serverUrl: opts.serverUrl,
+				credentials: {
+					username: opts.username,
+					password: opts.password,
+				},
+				authMethod: "Basic",
+				defaultAccountType: "caldav",
+			})
+		} else {
+			client = new DAVClient({
+				serverUrl: opts.serverUrl,
+				credentials: {
+					tokenUrl: opts.tokenUrl,
+					refreshToken: opts.refreshToken,
+					accessToken: opts.accessToken,
+					expiration: opts.expiration,
+					clientId: opts.clientId,
+					clientSecret: opts.clientSecret,
+				},
+				authMethod: "Oauth",
+				defaultAccountType: "caldav",
+			})
+		}
+
+		await client.login()
+		this.options = null
+		return client
+	}
+}
+
+function computeTimeRange(
+	now: Date,
+	lookAheadDays: number,
+	timeZone?: string,
+): { start: Date; end: Date } {
+	const start = startOfDay(now, timeZone)
+	const end = new Date(start.getTime() + (1 + lookAheadDays) * 24 * 60 * 60 * 1000)
+	return { start, end }
+}
+
+/**
+ * Returns midnight (start of day) as a UTC Date.
+ * When timeZone is provided, "midnight" is local midnight in that timezone
+ * converted to UTC. Otherwise, UTC midnight.
+ */
+function startOfDay(date: Date, timeZone?: string): Date {
+	if (!timeZone) {
+		const d = new Date(date)
+		d.setUTCHours(0, 0, 0, 0)
+		return d
+	}
+
+	// Extract the local year/month/day in the target timezone
+	const parts = new Intl.DateTimeFormat("en-CA", {
+		timeZone,
+		year: "numeric",
+		month: "2-digit",
+		day: "2-digit",
+	}).formatToParts(date)
+
+	const year = Number(parts.find((p) => p.type === "year")!.value)
+	const month = Number(parts.find((p) => p.type === "month")!.value)
+	const day = Number(parts.find((p) => p.type === "day")!.value)
+
+	// Binary-search-free approach: construct a UTC date at the local date's noon,
+	// then use the timezone offset at that moment to find local midnight in UTC.
+	const noonUtc = Date.UTC(year, month - 1, day, 12, 0, 0)
+	const noonLocal = new Date(noonUtc).toLocaleString("sv-SE", { timeZone, hour12: false })
+	// sv-SE locale formats as "YYYY-MM-DD HH:MM:SS" which Date can parse
+	const noonLocalMs = new Date(noonLocal + "Z").getTime()
+	const offsetMs = noonLocalMs - noonUtc
+
+	return new Date(Date.UTC(year, month - 1, day) - offsetMs)
+}
+
+export function computeSignals(
+	event: CalDavEventData,
+	now: Date,
+	timeZone?: string,
+): FeedItemSignals {
+	if (event.status === CalDavEventStatus.Cancelled) {
+		return { urgency: 0.1, timeRelevance: TimeRelevance.Ambient }
+	}
+
+	if (event.isAllDay) {
+		return { urgency: 0.3, timeRelevance: TimeRelevance.Ambient }
+	}
+
+	const msUntilStart = event.startDate.getTime() - now.getTime()
+
+	// Event already started
+	if (msUntilStart < 0) {
+		const isInProgress = now.getTime() < event.endDate.getTime()
+		return isInProgress
+			? { urgency: 0.8, timeRelevance: TimeRelevance.Imminent }
+			: { urgency: 0.2, timeRelevance: TimeRelevance.Ambient }
+	}
+
+	// Starting within 30 minutes
+	if (msUntilStart <= 30 * 60 * 1000) {
+		return { urgency: 0.9, timeRelevance: TimeRelevance.Imminent }
+	}
+
+	// Starting within 2 hours
+	if (msUntilStart <= 2 * 60 * 60 * 1000) {
+		return { urgency: 0.7, timeRelevance: TimeRelevance.Upcoming }
+	}
+
+	// Later today (using local day boundary when timeZone is set)
+	const todayStart = startOfDay(now, timeZone)
+	const endOfDay = new Date(todayStart.getTime() + 24 * 60 * 60 * 1000)
+
+	if (event.startDate.getTime() < endOfDay.getTime()) {
+		return { urgency: 0.5, timeRelevance: TimeRelevance.Upcoming }
+	}
+
+	// Future days
+	return { urgency: 0.2, timeRelevance: TimeRelevance.Ambient }
+}
+
+function createFeedItem(event: CalDavEventData, now: Date, timeZone?: string): CalDavFeedItem {
+	return {
+		id: `caldav-event-${event.uid}${event.recurrenceId ? `-${event.recurrenceId}` : ""}`,
+		type: "caldav-event",
+		timestamp: now,
+		data: event,
+		signals: computeSignals(event, now, timeZone),
+	}
+}

packages/aris-source-caldav/src/calendar-context.ts

@@ -2,23 +2,23 @@ import type { ContextKey } from "@aris/core"
 
 import { contextKey } from "@aris/core"
 
-import type { CalendarEventData } from "./types.ts"
+import type { CalDavEventData } from "./types.ts"
 
 /**
  * Calendar context for downstream sources.
  *
- * Provides a snapshot of the user's upcoming events so other sources
+ * Provides a snapshot of the user's upcoming CalDAV events so other sources
  * can adapt (e.g. a commute source checking if there's a meeting soon).
  */
 export interface CalendarContext {
 	/** Events happening right now */
-	inProgress: CalendarEventData[]
+	inProgress: CalDavEventData[]
 	/** Next upcoming event, if any */
-	nextEvent: CalendarEventData | null
+	nextEvent: CalDavEventData | null
 	/** Whether the user has any events today */
 	hasTodayEvents: boolean
 	/** Total number of events today */
 	todayEventCount: number
 }
 
-export const CalendarKey: ContextKey<CalendarContext> = contextKey("calendar")
+export const CalDavCalendarKey: ContextKey<CalendarContext> = contextKey("caldavCalendar")

packages/aris-source-caldav/src/ical-parser.ts

@@ -3,20 +3,20 @@ import ICAL from "ical.js"
 import {
 	AttendeeRole,
 	AttendeeStatus,
-	CalendarEventStatus,
-	type CalendarAlarm,
-	type CalendarAttendee,
-	type CalendarEventData,
+	CalDavEventStatus,
+	type CalDavAlarm,
+	type CalDavAttendee,
+	type CalDavEventData,
 } from "./types.ts"
 
 /**
  * Parses a raw iCalendar string and extracts all VEVENT components
- * into CalendarEventData objects.
+ * into CalDavEventData objects.
  *
  * @param icsData - Raw iCalendar string from a CalDAV response
  * @param calendarName - Display name of the calendar this event belongs to
  */
-export function parseICalEvents(icsData: string, calendarName: string | null): CalendarEventData[] {
+export function parseICalEvents(icsData: string, calendarName: string | null): CalDavEventData[] {
 	const jcal = ICAL.parse(icsData)
 	const comp = new ICAL.Component(jcal)
 	const vevents = comp.getAllSubcomponents("vevent")
@@ -29,7 +29,7 @@ export function parseICalEvents(icsData: string, calendarName: string | null): C
 function parseVEvent(
 	vevent: InstanceType<typeof ICAL.Component>,
 	calendarName: string | null,
-): CalendarEventData {
+): CalDavEventData {
 	const event = new ICAL.Event(vevent)
 
 	return {
@@ -50,15 +50,15 @@ function parseVEvent(
 	}
 }
 
-function parseStatus(raw: string | null): CalendarEventStatus | null {
+function parseStatus(raw: string | null): CalDavEventStatus | null {
 	if (!raw) return null
 	switch (raw.toLowerCase()) {
 		case "confirmed":
-			return CalendarEventStatus.Confirmed
+			return CalDavEventStatus.Confirmed
 		case "tentative":
-			return CalendarEventStatus.Tentative
+			return CalDavEventStatus.Tentative
 		case "cancelled":
-			return CalendarEventStatus.Cancelled
+			return CalDavEventStatus.Cancelled
 		default:
 			return null
 	}
@@ -81,22 +81,25 @@ function parseOrganizer(
 	return value.replace(/^mailto:/i, "")
 }
 
-function parseAttendees(properties: unknown[]): CalendarAttendee[] {
+function parseAttendees(properties: unknown[]): CalDavAttendee[] {
 	if (properties.length === 0) return []
 
-	return properties.map((prop) => {
+	return properties.flatMap((prop) => {
+		if (!prop || typeof prop !== "object" || !("getFirstValue" in prop)) return []
 		const p = prop as InstanceType<typeof ICAL.Property>
 		const value = asStringOrNull(p.getFirstValue())
 		const cn = asStringOrNull(p.getParameter("cn"))
 		const role = asStringOrNull(p.getParameter("role"))
 		const partstat = asStringOrNull(p.getParameter("partstat"))
 
-		return {
-			name: cn,
-			email: value ? value.replace(/^mailto:/i, "") : null,
-			role: parseAttendeeRole(role),
-			status: parseAttendeeStatus(partstat),
-		}
+		return [
+			{
+				name: cn,
+				email: value ? value.replace(/^mailto:/i, "") : null,
+				role: parseAttendeeRole(role),
+				status: parseAttendeeStatus(partstat),
+			},
+		]
 	})
 }
 
@@ -130,7 +133,7 @@ function parseAttendeeStatus(raw: string | null): AttendeeStatus | null {
 	}
 }
 
-function parseAlarms(vevent: InstanceType<typeof ICAL.Component>): CalendarAlarm[] {
+function parseAlarms(vevent: InstanceType<typeof ICAL.Component>): CalDavAlarm[] {
 	const valarms = vevent.getAllSubcomponents("valarm")
 	if (!valarms || valarms.length === 0) return []
 

packages/aris-source-caldav/src/index.ts

@@ -0,0 +1,15 @@
+export { CalDavCalendarKey, type CalendarContext } from "./calendar-context.ts"
+export { CalDavSource, type CalDavSourceOptions } from "./caldav-source.ts"
+export { parseICalEvents } from "./ical-parser.ts"
+export {
+	AttendeeRole,
+	AttendeeStatus,
+	CalDavEventStatus,
+	type CalDavAlarm,
+	type CalDavAttendee,
+	type CalDavDAVCalendar,
+	type CalDavDAVClient,
+	type CalDavDAVObject,
+	type CalDavEventData,
+	type CalDavFeedItem,
+} from "./types.ts"

packages/aris-source-caldav/src/types.ts

@@ -1,30 +1,16 @@
 import type { FeedItem } from "@aris/core"
 
-// -- Credential provider --
+// -- Event status --
 
-export interface CalendarCredentials {
-	accessToken: string
-	refreshToken: string
-	/** Unix timestamp in milliseconds when the access token expires */
-	expiresAt: number
-	tokenUrl: string
-	clientId: string
-	clientSecret: string
-}
-
-export interface CalendarCredentialProvider {
-	fetchCredentials(userId: string): Promise<CalendarCredentials | null>
-}
-
-// -- Feed item types --
-
-export const CalendarEventStatus = {
+export const CalDavEventStatus = {
 	Confirmed: "confirmed",
 	Tentative: "tentative",
 	Cancelled: "cancelled",
 } as const
 
-export type CalendarEventStatus = (typeof CalendarEventStatus)[keyof typeof CalendarEventStatus]
+export type CalDavEventStatus = (typeof CalDavEventStatus)[keyof typeof CalDavEventStatus]
+
+// -- Attendee types --
 
 export const AttendeeRole = {
 	Chair: "chair",
@@ -43,21 +29,25 @@ export const AttendeeStatus = {
 
 export type AttendeeStatus = (typeof AttendeeStatus)[keyof typeof AttendeeStatus]
 
-export interface CalendarAttendee {
+export interface CalDavAttendee {
 	name: string | null
 	email: string | null
 	role: AttendeeRole | null
 	status: AttendeeStatus | null
 }
 
-export interface CalendarAlarm {
+// -- Alarm --
+
+export interface CalDavAlarm {
 	/** ISO 8601 duration relative to event start, e.g. "-PT15M" */
 	trigger: string
 	/** e.g. "DISPLAY", "AUDIO" */
 	action: string
 }
 
-export interface CalendarEventData extends Record<string, unknown> {
+// -- Event data --
+
+export interface CalDavEventData extends Record<string, unknown> {
 	uid: string
 	title: string
 	startDate: Date
@@ -66,36 +56,38 @@ export interface CalendarEventData extends Record<string, unknown> {
 	location: string | null
 	description: string | null
 	calendarName: string | null
-	status: CalendarEventStatus | null
+	status: CalDavEventStatus | null
 	url: string | null
 	organizer: string | null
-	attendees: CalendarAttendee[]
-	alarms: CalendarAlarm[]
+	attendees: CalDavAttendee[]
+	alarms: CalDavAlarm[]
 	recurrenceId: string | null
 }
 
-export type CalendarFeedItem = FeedItem<"calendar-event", CalendarEventData>
+// -- Feed item --
+
+export type CalDavFeedItem = FeedItem<"caldav-event", CalDavEventData>
 
 // -- DAV client interface --
 
-export interface CalendarDAVObject {
+export interface CalDavDAVObject {
 	data?: unknown
 	etag?: string
 	url: string
 }
 
-export interface CalendarDAVCalendar {
+export interface CalDavDAVCalendar {
 	displayName?: string | Record<string, unknown>
 	url: string
 }
 
-/** Subset of DAVClient used by CalendarSource. */
-export interface CalendarDAVClient {
+/** Subset of tsdav's DAVClient used by CalDavSource. */
+export interface CalDavDAVClient {
 	login(): Promise<void>
-	fetchCalendars(): Promise<CalendarDAVCalendar[]>
+	fetchCalendars(): Promise<CalDavDAVCalendar[]>
 	fetchCalendarObjects(params: {
-		calendar: CalendarDAVCalendar
+		calendar: CalDavDAVCalendar
 		timeRange: { start: string; end: string }
-	}): Promise<CalendarDAVObject[]>
+	}): Promise<CalDavDAVObject[]>
 	credentials: Record<string, unknown>
 }

packages/aris-source-google-calendar/src/index.ts

@@ -1,7 +1,6 @@
 export { NextEventKey, type NextEvent } from "./calendar-context"
 export {
 	CalendarFeedItemType,
-	type CalendarFeedItemType as CalendarFeedItemTypeType,
 	type CalendarAllDayFeedItem,
 	type CalendarEventFeedItem,
 	type CalendarFeedItem,
@@ -10,7 +9,6 @@ export { DefaultGoogleCalendarClient } from "./google-calendar-api"
 export { GoogleCalendarSource, type GoogleCalendarSourceOptions } from "./google-calendar-source"
 export {
 	EventStatus,
-	type EventStatus as EventStatusType,
 	type ApiCalendarEvent,
 	type ApiEventDateTime,
 	type CalendarEventData,