Issue #7 called out four problems with the QuickLook preview iOS
recipients see when they open a `.honeydue` invite (e.g. via AirDrop or
Save to Files). All four fixed here.
1. Filename: keep spaces and apostrophes
`HoneyDueShareCodec.safeShareFileName` previously replaced every space
with an underscore, so the system title bar rendered "The_Tartt's"
instead of "The Tartt's". Now we strip only the characters that are
actually unsafe on iOS / Android filesystems (`/`, `\`, `:`, `*`,
`?`, `"`, `<`, `>`, `|`, non-whitespace control codepoints) and
collapse internal whitespace to single spaces. Locked in with six
new commonTest cases.
2. Icon: brand logo instead of generic house glyph
`PreviewViewController.updateUIForResidence` was using
`UIImage(systemName: "house.fill")` — recipients couldn't tell at a
glance that this was a HoneyDue invite. The honeyDue app logo
(Assets.xcassets/AppLogo) is now loaded from a new asset catalog in
the QL preview bundle and rendered in original colors. SF Symbol
fallback retained for any asset-load failure.
3. Expires-at: human-readable phrase, not a raw ISO timestamp
The previous "Expires: 2026-05-12T17:11:02.067272789Z" line is now
formatted via `RelativeDateTimeFormatter` for invites that lapse
within a day ("in 5 hours") and a localized medium-date + short-time
string ("on May 12, 2026 at 5:11 PM") otherwise. Already-expired
links render "expired 2 hours ago". Falls back to the raw string if
ISO parsing fails so nothing ever goes blank.
4. Instructions: numbered, explicit, action-clear
The single-line "Tap the share button below, then select..." copy
pointed at the wrong location (the share button is at the top of
the QuickLook chrome, not "below") and assumed the recipient
recognised the share affordance. Replaced with a three-step list.
Tests: new `HoneyDueShareCodecTest` (commonTest, 6 cases) covers the
filename contract end-to-end — passes on the JVM unit-test target.
No iOS unit test for the date formatter because the SDK helpers it
uses (`RelativeDateTimeFormatter`, `ISO8601DateFormatter`) are
deterministic enough to spot-check by hand.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Trey T