fix(globe): correct every marker location + stop the card opening on zoom

[Jose-Gael-Cruz-Lopez]

1. Markers were in the wrong place (or missing entirely)

web/lib/listings.ts geocodes via an exact-string GEO lookup that had only 13 entries, then applied a "jitter" to un-stack co-located pins:

lat = geo[0] + (n > 1 ? 0.08 * Math.sin(angle) : 0);   // 0.08° ≈ 9 km

Two consequences:

• 23 in-person listings had no coordinates at all and never rendered on the globe — including every recently-added collegiate event (Troy, Ithaca, Pittsburgh, Miami, Seattle, Vancouver, Providence…). "Toronto, ON" (3 listings) missed purely because the table only had "Toronto, ON, Canada".
• The jitter is ~9 km. With two Cambridge listings, one pin got flung across town into Roslindale — the wrong-location dot in the report.

Fix: added every missing city, and cut the jitter to 0.01° (~1.1 km) — still enough to separate pins at city zoom, but each marker stays inside its real city.

	Before	After
In-person listings on the globe	17	39
Unmapped	23	1
Max displacement from true city centre	~9 km	1.11 km
Cambridge	1 pin in Roslindale	HackMIT 0.00 km, HackHarvard 1.11 km

The single remaining unmapped listing is Arcangel, whose location is literally TBA — correctly left off the map rather than guessed.

Also fixed one un-geocodable entry: Agentic AI Build Week stored the venue string "Galaxy Innovation Park" as its location; it's in Ho Chi Minh City (per the 2026-07-11 verification pass), so it now maps.

2. Clicking a dot popped the detail card

The marker click handler called both flyTo() and setSelected(), so the detail card covered the very map you'd just zoomed into.

Clicking a marker now only flies the camera in. The hover popup still shows status · title · host · location, and the card remains reachable from the Deck / list — <DetailModal /> stays mounted in page-shell + home-client (Deck and Tracker still open it).

Verification

• tsc --noEmit clean · eslint clean
• vitest run — 51 passed
• python -m unittest discover — 48 passed
• util.check_schema — 59 listings valid; README regenerated
• /globe returns 200

🤖 Generated with Claude Code