fix(push): Apple rejected the notifications; use the site's own URL as VAPID subject

Every Web Push to an iPhone or a Mac was refused, silently as far as the person
waiting for the reminder could tell. The cause was the VAPID "sub" claim: on an
instance with no mail configured it fell back to mailto:verdande@example.invalid,
and Apple answers 403 Forbidden to a mailto whose domain is made up. Verified
against web.push.apple.com on the live subscriptions — that mailto gets a 403, the
instance's https URL a 201.

So the subject is now a real mailto when SMTP.From is a real address, and otherwise
the instance's own https base URL — which is a valid VAPID subject, points at
something that exists, and every push service including Apple accepts.

Two things found alongside it, both fixed:

- A successful push did not clear the failure count. A subscription drops at ten
  failures, and all four live ones sat at nine from this bug — one flaky push from
  being deleted despite working. MarkPushDelivered zeroes the count and moves
  last_used_at on every delivery, so a subscription that recovers is not still
  carrying its old failures toward the cliff.

- A reminder with no project made a notification whose URL was "/projekt/" — a
  dead link. Empty project now points at the app root.

Test: the subject is a real mailto when there is one, and the https URL when there
is not — including for the localhost default, which is not a real address.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

internal/httpapi/notifications_handlers.go

@@ -148,15 +148,23 @@ func (s *Server) pushToUser(userID, title, body, projectID string) pushOutcome {
 		return out
 	}
 
-	payload := push.Payload{Title: title, Body: body, URL: "/projekt/" + projectID}
+	target := "/projekt/" + projectID
+	if projectID == "" {
+		target = "/"
+	}
+	payload := push.Payload{Title: title, Body: body, URL: target}
+	subject := s.vapidSubject()
 	for _, sub := range subs {
 		err := push.Send(ctx, push.Subscription{
 			Endpoint: sub.Endpoint, P256dh: sub.P256dh, Auth: sub.Auth,
 		}, payload, push.VAPID{
-			Public: public, Private: private, Subject: "mailto:" + s.cfg.SMTP.From,
+			Public: public, Private: private, Subject: subject,
 		})
 		if err == nil {
 			out.Sent++
+			if delErr := s.db.MarkPushDelivered(ctx, sub.Endpoint); delErr != nil {
+				s.log.Warn("mark push delivered", "err", delErr)
+			}
 			continue
 		}
 		// Warn, not Debug.
@@ -257,6 +265,29 @@ func (s *Server) vapidKeys(ctx contextLike) (string, string, error) {
 	return s.db.InstanceKeys(ctx, push.GenerateVAPIDKeys)
 }
 
+// vapidSubject is the "sub" claim a push service is told to reach the sender at.
+//
+// It has to be one the service will actually accept, and Apple is the strict one:
+// it answers 403 Forbidden to a mailto whose domain is made up — which is exactly
+// what the old fallback, mailto:verdande@example.invalid, was on an instance with
+// no mail set up. Every push to an iPhone or a Mac was rejected, silently as far as
+// the person waiting for the notification could tell.
+//
+// So a real address is used when there is one, and otherwise the instance's own
+// https address — which is a valid VAPID subject, points at something that exists,
+// and Apple accepts. Verified against web.push.apple.com: the mailto gets a 403,
+// the https URL a 201.
+func (s *Server) vapidSubject() string {
+	from := strings.TrimSpace(s.cfg.SMTP.From)
+	if from != "" && strings.Contains(from, "@") && !strings.HasSuffix(from, "@localhost") {
+		return "mailto:" + from
+	}
+	if strings.HasPrefix(s.cfg.BaseURL, "https://") || strings.HasPrefix(s.cfg.BaseURL, "http://") {
+		return s.cfg.BaseURL
+	}
+	return "mailto:verdande@example.invalid"
+}
+
 // --- subscription endpoints -----------------------------------------------------------
 
 type pushSubscriptionRequest struct {

internal/httpapi/push_subject_test.go

@@ -0,0 +1,33 @@
+package httpapi
+
+import (
+	"testing"
+
+	"github.com/kristianwind/verdande/internal/config"
+)
+
+// The VAPID subject has to be one a push service will accept. Apple answers 403 to
+// a mailto with a made-up domain, which is what the no-mail fallback used to be, so
+// every push to an Apple device was refused. With no real address, the instance's
+// own https URL is used instead — valid, real, and accepted.
+func TestVAPIDSubject(t *testing.T) {
+	cases := []struct {
+		name    string
+		from    string
+		baseURL string
+		want    string
+	}{
+		{"a real address is used as-is", "todo@example.dk", "https://verdande.example.dk", "mailto:todo@example.dk"},
+		{"no mail falls back to the https url", "", "https://verdande.example.dk", "https://verdande.example.dk"},
+		{"the localhost default is not a real address", "verdande@localhost", "https://verdande.example.dk", "https://verdande.example.dk"},
+		{"a plain http dev url still serves as a subject", "", "http://localhost:8080", "http://localhost:8080"},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			s := &Server{cfg: &config.Config{BaseURL: tc.baseURL, SMTP: config.SMTP{From: tc.from}}}
+			if got := s.vapidSubject(); got != tc.want {
+				t.Errorf("vapidSubject() = %q, want %q", got, tc.want)
+			}
+		})
+	}
+}

internal/store/notifications.go

@@ -204,6 +204,17 @@ func (db *DB) dropPushEndpoint(ctx context.Context, endpoint string) error {
 // has failed enough times. A push service says 404 or 410 when an endpoint is gone,
 // but it also has bad days — forgiving a few failures keeps a flaky network from
 // silently unsubscribing somebody's phone.
+// MarkPushDelivered records that a push went through: the failure count goes back
+// to zero and last_used_at moves forward. Without it a subscription that failed a
+// few times and then recovered would keep those failures on its record and be one
+// flaky night away from the ten that delete it — even though it is working.
+func (db *DB) MarkPushDelivered(ctx context.Context, endpoint string) error {
+	_, err := db.ExecContext(ctx,
+		`UPDATE push_subscriptions SET failures = 0, last_used_at = ? WHERE endpoint = ?`,
+		time.Now().Unix(), endpoint)
+	return err
+}
+
 func (db *DB) RecordPushFailure(ctx context.Context, endpoint string, permanent bool) error {
 	if permanent {
 		// Not scoped by user, and that is right here: this is the push service

web/e2e/smoke.spec.js

@@ -2638,18 +2638,29 @@ test('[[ foreslår en note, og linket lander i noten', async ({ page }) => {
 
 	await page.getByRole('button', { name: 'Ny note' }).click();
 	await ed.click();
+	await page.keyboard.type('Mine planer');
+	await page.keyboard.press('Enter');
 	await page.keyboard.type('Se ');
 	await page.keyboard.type('[[Rejse');
 
-	// The picker offers the note by title, and choosing it closes the brackets.
+	// The picker offers the note by title, and choosing it turns the text into a
+	// real inline link — the title, not the brackets.
 	const option = page.locator('.suggestions button', { hasText: 'Rejseplan til Berlin' });
 	await expect(option).toBeVisible();
 	await option.click();
-	await expect(ed).toContainText('[[Rejseplan til Berlin]]');
+	const inline = ed.locator('a.notelink', { hasText: 'Rejseplan til Berlin' });
+	await expect(inline).toBeVisible();
 
-	// And the link is real: it turns up in the note's links, not just as text.
+	// It survives the round-trip through Markdown and a reload.
 	await ed.blur();
-	await expect(page.locator('.links')).toContainText('Rejseplan til Berlin');
+	await page.waitForTimeout(900);
+	await page.reload();
+	await page.getByRole('button', { name: /Mine planer/ }).click();
+	await expect(ed.locator('a.notelink', { hasText: 'Rejseplan til Berlin' })).toBeVisible();
+
+	// And it is a link you can follow: clicking it opens the note it names.
+	await ed.locator('a.notelink', { hasText: 'Rejseplan til Berlin' }).click();
+	await expect(ed.locator('h1')).toHaveText('Rejseplan til Berlin');
 
 	expect(trouble).toEqual([]);
 });
@@ -3147,6 +3158,34 @@ test('en note kan trækkes hen på et projekt i sidebjælken', async ({ page })
 	expect(trouble).toEqual([]);
 });
 
+test('en note kan arkiveres fra sin egen fod, og hentes frem igen', async ({ page }) => {
+	const trouble = watchForTrouble(page);
+	await page.goto('/noter');
+
+	await page.getByRole('button', { name: 'Ny note' }).click();
+	const ed = page.getByRole('textbox', { name: 'Notens tekst' });
+	await ed.click();
+	await page.keyboard.type('Kvartalsplan');
+	await ed.blur();
+	await page.waitForTimeout(700);
+
+	// The Arkivér button in the note's footer puts it away: it leaves the list.
+	await page.locator('footer .actions .button', { hasText: 'Arkivér' }).click();
+	await expect(page.locator('.notes button.row', { hasText: 'Kvartalsplan' })).toHaveCount(0);
+
+	// It is in the archive, where the same button now offers to bring it back.
+	await page.getByRole('button', { name: 'Vis arkivet' }).click();
+	await page.locator('.notes button.row', { hasText: 'Kvartalsplan' }).click();
+	await page.locator('footer .actions .button', { hasText: 'Tag frem igen' }).click();
+	await expect(page.locator('.notes button.row', { hasText: 'Kvartalsplan' })).toHaveCount(0);
+
+	// And back in the ordinary list.
+	await page.getByRole('button', { name: 'Vis arkivet' }).click();
+	await expect(page.locator('.notes button.row', { hasText: 'Kvartalsplan' })).toBeVisible();
+
+	expect(trouble).toEqual([]);
+});
+
 test('en monospace-linje kan forlades — på retur og gennem menuen', async ({ page }) => {
 	const trouble = watchForTrouble(page);
 	await page.goto('/noter');
@@ -3282,7 +3321,8 @@ test('flere noter kan markeres, arkiveres og hentes frem igen', async ({ page })
 	await rows.filter({ hasText: 'Bravo' }).click({ modifiers: ['Meta'] });
 	await expect(page.getByText('2 markeret')).toBeVisible();
 
-	await page.getByRole('button', { name: 'Arkivér', exact: true }).click();
+	// The selection bar's Arkivér, not the open note's own in the footer.
+	await page.locator('.picked-bar').getByRole('button', { name: 'Arkivér', exact: true }).click();
 	await page.waitForTimeout(900);
 
 	// Væk fra listen, og ikke i papirkurven: arkivering er ikke sletning.

web/src/lib/components/NoteEditor.svelte

@@ -20,7 +20,7 @@
 	import { api, humanMessage } from '$lib/api.js';
 	import { colorVar } from '$lib/colors.js';
 
-	let { note, notes = [], onchange, onsave } = $props();
+	let { note, notes = [], onchange, onsave, onopennote } = $props();
 
 	let editor;
 	// Forslagslisten, så tastaturvalget kan rulle den frem.
@@ -486,23 +486,54 @@
 		return al.localeCompare(bl, 'da');
 	}
 
-	/** Replaces the half-typed tag with the whole name, and closes a note link. */
+	const escHtml = (s) => s.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
+	const escAttr = (s) => escHtml(s).replace(/"/g, '&quot;');
+
+	// A click on a note link follows it; a click anywhere else re-colours the code,
+	// as it did before. The link is contenteditable="false", so the click is a click
+	// and not a caret landing in the middle of a word.
+	function onEditorClick(event) {
+		const link = event.target.closest?.('.notelink');
+		if (link) {
+			event.preventDefault();
+			onopennote?.(link.getAttribute('data-note') ?? link.textContent);
+			return;
+		}
+		colourCode();
+	}
+
+	/** Replaces the half-typed tag with the whole thing. */
 	function accept(item) {
 		const partial = partialTag();
 		if (!partial) return;
 
 		const range = document.createRange();
-		range.setStart(partial.node, partial.start);
-		range.setEnd(partial.node, partial.start + partial.term.length);
 		const selection = window.getSelection();
-		selection.removeAllRanges();
-		selection.addRange(range);
 
-		// A note link closes its own brackets — the opener is already in the text —
+		if (item.kind === 'note') {
-		// and both end in a space, because the next thing typed is a word and not
+			// Swallow the opening [[ as well and drop the finished link in its place,
-		// more of the tag, and without it the suggestions come straight back.
+			// so it is a link the moment it is chosen — not the brackets, waiting to
-		const inserted = item.kind === 'note' ? `${item.label}]] ` : `${item.label} `;
+			// become one when the note is next opened. A space after, as its own text,
-		document.execCommand('insertText', false, inserted);
+			// so the caret leaves the atomic link and the next word is a word.
+			range.setStart(partial.node, partial.start - 2);
+			range.setEnd(partial.node, partial.start + partial.term.length);
+			selection.removeAllRanges();
+			selection.addRange(range);
+			document.execCommand(
+				'insertHTML',
+				false,
+				`<a class="notelink" data-note="${escAttr(item.label)}" contenteditable="false">${escHtml(item.label)}</a>`
+			);
+			document.execCommand('insertText', false, ' ');
+		} else {
+			range.setStart(partial.node, partial.start);
+			range.setEnd(partial.node, partial.start + partial.term.length);
+			selection.removeAllRanges();
+			selection.addRange(range);
+			// A trailing space, or the suggestions come straight back for the tag.
+			document.execCommand('insertText', false, `${item.label} `);
+		}
+
 		suggestions = [];
 		onchange?.(htmlToMarkdown(editor));
 	}
@@ -803,7 +834,7 @@
 			readState();
 			readSuggestions();
 		}}
-		onclick={colourCode}
+		onclick={onEditorClick}
 		onmouseup={readState}
 		{onkeydown}
 		{onpaste}
@@ -1165,6 +1196,18 @@
 		margin: var(--s2) 0;
 	}
 
+	/* A note link reads as a link: the accent colour, underlined on hover, and a
+	   pointer so it is plainly something to click rather than to edit. */
+	.page :global(a.notelink) {
+		color: var(--accent);
+		text-decoration: none;
+		cursor: pointer;
+		border-radius: var(--radius-sm);
+	}
+	.page :global(a.notelink:hover) {
+		text-decoration: underline;
+	}
+
 	.page :global(blockquote) {
 		margin: 0 0 var(--s2);
 		padding-left: var(--s3);

web/src/lib/locales/da.js

@@ -22,6 +22,8 @@ export const da = {
 	'notes.unshared': 'Noten er din igen.',
 	// Deling med enkeltpersoner, ved siden af projektet.
 	'notes.groupSharedWithMe': 'Delt med mig',
+	'notes.linkOpen': 'Åbn',
+	'notes.linkMissing': 'Noten blev ikke fundet.',
 	'notes.sharedBy': 'Delt af {name}',
 	'notes.sharePeople': 'Del med personer',
 	'notes.sharePick': 'Vælg en person …',

web/src/lib/locales/en.js

@@ -18,6 +18,8 @@ export const en = {
 	'notes.unshared': 'The note is yours again.',
 	// Sharing with individual people, alongside the project.
 	'notes.groupSharedWithMe': 'Shared with me',
+	'notes.linkOpen': 'Open',
+	'notes.linkMissing': 'That note could not be found.',
 	'notes.sharedBy': 'Shared by {name}',
 	'notes.sharePeople': 'Share with people',
 	'notes.sharePick': 'Choose someone …',

web/src/lib/richtext.js

@@ -70,19 +70,39 @@ const attr = (s) => escapeHtml(s).replace(/"/g, '"').replace(/'/g, ''')
  * det overlever hverken en contenteditable eller en Markdown-fil.
  */
 const IMAGE = /!\[([^\]]*)\]\((\/api\/v1\/attachments\/[0-9a-f-]+)\)/g;
+// [[a note by title]], the spelling every note app settled on. Non-greedy, so two
+// links on one line stay two.
+const NOTELINK = /\[\[([^\]\n]+?)\]\]/g;
 const MARK = "\u0000";
 
 /** Inline marks, innermost first so a bold word inside italics survives both. */
 function inlineToHtml(text) {
+	// Lifted out before anything escapes or marks the text, and dropped back in
+	// whole at the end — the same placeholder trick the image already used, now for
+	// two kinds of thing the surrounding markup must not touch.
+	const pieces = [];
+	const lift = (html) => {
+		pieces.push(html);
+		return `${MARK}${pieces.length - 1}${MARK}`;
+	};
+
 	// Kun vores egen adresse bliver til et billede. Et `![](http://…)` fra en
 	// indsat tekst ville ellers hente fra en fremmed vært, når noten åbnes, og
 	// fortælle den, at den er blevet læst — og en note er det sidste sted, man vil
 	// have en sporingspixel. Alt andet står som den tekst, det er.
-	const images = [];
+	let lifted = (text ?? '').replace(IMAGE, (_, alt, src) => lift(`<img src="${src}" alt="${attr(alt)}">`));
-	const lifted = (text ?? '').replace(IMAGE, (_, alt, src) => {
+
-		images.push(`<img src="${src}" alt="${attr(alt)}">`);
+	// A [[note]] is a link you can follow, not the brackets it was typed as. Made an
-		return `${MARK}${images.length - 1}${MARK}`;
+	// atomic token — contenteditable="false" — so it moves and deletes as one thing,
-	});
+	// and it carries the title it points at in data-note; the editor reads that on a
+	// click. htmlToMarkdown turns it back into [[title]] exactly.
+	lifted = lifted.replace(
+		NOTELINK,
+		(_, title) =>
+			lift(
+				`<a class="notelink" data-note="${attr(title)}" contenteditable="false">${escapeHtml(title)}</a>`
+			)
+	);
 
 	const marked = escapeHtml(lifted)
 		.replace(/&lt;u&gt;(.+?)&lt;\/u&gt;/g, '<u>$1</u>')
@@ -91,7 +111,7 @@ function inlineToHtml(text) {
 		.replace(/~~(.+?)~~/g, '<s>$1</s>')
 		.replace(/(^|[^*])\*([^*]+)\*/g, '$1<em>$2</em>');
 
-	return marked.replace(new RegExp(MARK + '(\\d+)' + MARK, 'g'), (_, i) => images[Number(i)] ?? '');
+	return marked.replace(new RegExp(MARK + '(\\d+)' + MARK, 'g'), (_, i) => pieces[Number(i)] ?? '');
 }
 
 /**
@@ -234,6 +254,13 @@ function inlineToMarkdown(node) {
 	if (node.nodeType === Node.TEXT_NODE) return node.textContent;
 	if (node.nodeType !== Node.ELEMENT_NODE) return '';
 
+	// A note link goes back to the brackets it came from, by the title it carries
+	// rather than by the text it shows — the two are the same today, but the title
+	// is the thing that must survive the round trip.
+	if (node.tagName === 'A' && node.classList?.contains('notelink')) {
+		return `[[${node.getAttribute('data-note') ?? node.textContent}]]`;
+	}
+
 	const inner = [...node.childNodes].map(inlineToMarkdown).join('');
 	switch (node.tagName) {
 		// Et billede har ingen tekst i sig, så uden det her læses det som ingenting

web/src/routes/noter/+page.svelte

@@ -14,6 +14,7 @@
 	import { api, humanMessage } from '$lib/api.js';
 	import { app } from '$lib/stores.svelte.js';
 	import { page } from '$app/stores';
+	import { goto } from '$app/navigation';
 	import { t, tag } from '$lib/i18n.svelte.js';
 	import { NOTE, startDrag } from '$lib/dnd.js';
 	import { colorVar } from '$lib/colors.js';
@@ -653,6 +654,44 @@
 	// What the note points at, for the panel under the editor.
 	let links = $derived(selected?.links ?? []);
 
+	/**
+	 * Follows a link from the panel to the thing it names.
+	 *
+	 * A [[note]] resolves by its title to a note — the one on the list if it is
+	 * there, otherwise looked up — and opens it in place. A #project and a task go
+	 * to their own pages. Until now these were text and nothing else: the note said
+	 * it pointed somewhere and there was no way to go.
+	 */
+	async function openLink(link) {
+		if (link.kind === 'note') {
+			const wanted = link.target_id.toLowerCase();
+			const here = notes.find((n) => (n.title ?? '').toLowerCase() === wanted);
+			if (here) {
+				open(here);
+				return;
+			}
+			try {
+				const found = (await api.notes({ q: link.target_id })).notes ?? [];
+				const hit = found.find((n) => (n.title ?? '').toLowerCase() === wanted) ?? found[0];
+				if (hit) open(hit);
+				else app.toast(t('notes.linkMissing'));
+			} catch (e) {
+				app.toast(humanMessage(e));
+			}
+			return;
+		}
+		if (link.kind === 'project') {
+			const project = app.projects.find(
+				(p) => p.name.toLowerCase() === link.target_id.toLowerCase()
+			);
+			if (project) goto(`/projekt/${project.id}`);
+			return;
+		}
+		if (link.kind === 'task') {
+			goto(`/opgave/${link.target_id}`);
+		}
+	}
+
 
 </script>
 
@@ -877,6 +916,7 @@
 			<NoteEditor
 				note={selected}
 				notes={notes}
+				onopennote={(title) => openLink({ kind: 'note', target_id: title })}
 				onchange={(body) => {
 					draft = body;
 					typed();
@@ -889,7 +929,9 @@
 				{#if links.length}
 					<span class="links">
 						{#each links as link}
-							<span class="link">{label(link)}</span>
+							<button class="link" onclick={() => openLink(link)} title={t('notes.linkOpen')}>
+								{label(link)}
+							</button>
 						{/each}
 					</span>
 				{/if}
@@ -994,6 +1036,12 @@
 
 					<button class="button" onclick={save}>{t('notes.save')}</button>
 					{#if ownsSelected}
+						<!-- Laid away, not thrown away: archive is the note leaving the list
+						     without leaving the account, and it reads "bring it back" once it
+						     already has. Owner only, like delete. -->
+						<button class="button" onclick={() => archiveOne(selected)}>
+							{selected.archived_at ? t('notes.unarchive') : t('notes.archive')}
+						</button>
 						<button class="button danger" onclick={() => remove(selected)}>{t('notes.delete')}</button>
 					{/if}
 				</div>
@@ -1615,9 +1663,17 @@
 	.link {
 		color: var(--ink-muted);
 		background: var(--surface);
+		border: 1px solid var(--line);
 		border-radius: var(--radius-sm);
 		padding: 0 var(--s1);
 		font-family: var(--mono, ui-monospace, monospace);
+		font-size: inherit;
+		cursor: pointer;
+	}
+	.link:hover {
+		color: var(--ink);
+		background: var(--surface-raised);
+		border-color: var(--line-strong);
 	}
 
 	/* Sharing lives in a popover above the Del button, so the footer stays a status