[oddharsh]

Every control in the desktop shell carries a title, which buys the OS tooltip: one line, in the system font, after a delay nobody chose. Windows itself was richer than that. An Explorer infotip named a folder's contents ("Size: 110 MB / Folders: … / Files: …"), the tray's tooltips were live readouts, the clock's was the full date, and the ToolTip control put a line under a field saying what it wanted before you got it wrong.

holding/infotip.js draws those two shapes in Luna, on: taskbar app buttons, tray icons, the clock, the sound toggle, the Start orb, desktop icons, title-bar controls, and any form field carrying a tip.

What it says, and where each line comes from

Nothing is decorative and nothing is guessed. A row with no value is dropped rather than filled in, the same rule the photo tooltip's EXIF rows follow.

surface	rows	source
taskbar pin	Type / Contains N pages / Status: Running	nav.js's own destination table; the pressed state the taskbar already paints
desktop icon	Type / Target / Contains N notes / Opens	the href, plus posts.json for Notepad
tray	Colo / From / Transport, Firewall, Build / Latest	the same whoareyou.json + updates.json their click-balloons fetch — one fetch per page, shared
clock	the full date + zone	the clock
field	one line	the field's own title

How it treats title

It re-draws the attribute rather than replacing it: emptied on the way in, restored on the way out. AT still reads it at focus, and a page with JS off keeps the native tooltip. [data-tip] is the explicit opt-in for a control that never had a native one. Stashing lives in the module and not in the loader on purpose — a loader that stripped titles itself would leave them stripped if the module never arrived.

Field tips land on the three /coffee inputs, both /lens address bars, and /search.

hoist.js

Gains Windows' two delays, both defaulting OFF so the content surfaces (photos, tracks, the Run preview) keep the instant show they were tuned for:

• openMs — 400ms cold dwell (XP's SPI_GETMOUSEHOVERTIME), skipped while a tip is already up, which is XP's reshow behaviour and what makes sweeping a row of buttons feel instant.
• autopopMs — 6s, which also covers the one dismissal a pointer cannot: a cursor that leaves the viewport for another window fires no pointerout.

The dwell is also what hides the lazy load, since the import runs during the wait.

Cost

1,713 B brotli, loaded on the first chrome hover, never on a coarse pointer. nav.js grew 1.1 KB minified and owns the target selector, passing it to the module — two copies is how a loader and its module come to disagree about what has a tip. Derivation (the page counting) sits on the lazy side for the same reason.

/nav.js's route-oracle ceiling goes 50,000 → 65,000. It is a did-the-build-minify tripwire rather than a byte budget, and a 241-byte gap turns it into one that fails on whichever unrelated change happens to cross it. A readable nav.js is ~98 KB, so it still catches the bypass it exists for; perf-budget.mjs is where a real budget belongs.

Verified

pnpm run build, 212 contract tests (3 new), perf-budget green, routes:check 122/122, cal's 59 tests, typecheck. Exercised in a browser against wrangler dev: pin, tray, clock, desktop icon, and field tips all render with live data, and a field's title is confirmed restored after the pointer leaves.

Content tooltips too (second commit)

The rule is the short one now: any [title] is an infotip, wherever it lives. The shell-only list meant the promise was kept in the chrome and broken two inches lower, on the citation links and demo controls that had titles all along. What the shell selectors still buy is the title-LESS chrome (the clock has no attribute to read) and the families whose card is built from live state.

A titled link that leaves the site gets the shortcut treatment — the title stays the tip, and Target names the host, path trimmed to ~46 chars with a visible ellipsis (darko.audio/2018/04/dial-m-for-multi-bit-schi…). The host is the decision; a 70-character slug wrapped over three lines is not, and a silently shortened URL in a tooltip about where a link goes is the one dishonesty this surface cannot afford. Same-origin links keep the bare line. An untitled link still gets nothing.

Four richer surfaces are skipped by name: tooltip.js's photos/tracks/artists/car links, /lens's glossary terms, serendipity's event covers. .lx-term is the sharp one — those ship a title as their no-JS fallback and lens.js strips it once its own surface is live, so without the skip a race between two lazy modules would decide whether you got the glossary card or a flat line. Verified: hovering a lens term opens its own card and the infotip module never loads.

Two consequences worth naming:

• "What was hovered" is now one function, passed from nav.js to the module. The skip list made the rule too big to keep honestly in two places.
• nav.js retires its loader listeners once the module starts. With the selector matching every titled element, leaving them attached would cost a second closest() walk per pointerover for the rest of the session, on a path that fires at every element boundary.

Escaping is now load-bearing, because some of those strings are not ours (/inbox carries webmention titles; /around and /reading carry crawled text). Measured in a browser: a title holding <img src=x onerror=alert(1)> renders as text and creates no element. A contract test pins every interpolation to esc().

Re-verified: build, 214 contract tests (5 new), perf-budget green, routes:check 122/122. nav.js minified is 49,866 B.

🤖 Generated with Claude Code

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Status	Name	Latest Commit	Updated (UTC)
✅ Deployment successful! View logs	aadhar-sh	99ec663	Aug 11 2026, 10:44 AM

[github-actions]

Wire-size diff vs merge base

d98bcc4 → d830a46

Brotli q11, the quality the edge serves. Every number here is deterministic:
an unchanged file produces no row. Advisory — this check fails on nothing.

Client assets

Total Brotli: 60.97 KiB → 63.56 KiB (+2.59 KiB, +4.2%) across 13 files, 5 changed.

file	base	head	Δ
infotip.js	—	1.88 KiB	new
nav.js	13.44 KiB	13.84 KiB	+0.40 KiB (+3.0%)
luna.css	8.88 KiB	9.04 KiB	+0.16 KiB (+1.8%)
hoist.js	0.89 KiB	1.03 KiB	+0.14 KiB (+15.3%)
tooltip.js	2.59 KiB	2.60 KiB	+0.01 KiB (+0.5%)

Pages

Total Brotli: 476.77 KiB → 476.63 KiB (-0.14 KiB, -0.0%) across 46 files, 41 changed.

No single file moved by 0.13 KiB or more.

_{Plus 41 files under the 0.13 KiB floor, net -0.14 KiB — usually content-hash churn in /a/ references, counted in the total above.}

Worker bundle

269.18 KiB → 269.52 KiB gzip (+0.34 KiB, +0.1%)

Largest module deltas (raw bytes in bundle):

file	base	head	Δ
.build/cal/src/templates.js	18.23 KiB	18.70 KiB	+0.46 KiB (+2.5%)
.build/holding/_worker.js/lens.js	151.33 KiB	151.52 KiB	+0.19 KiB (+0.1%)
.build/holding/_worker.js/search.js	4.96 KiB	5.05 KiB	+0.09 KiB (+1.9%)

Dictionary deltas (pd/)

134 → 134 deltas, 405.30 KiB → 405.54 KiB (+0.24 KiB).