Rebalance timeline to arrive Dublin Aug 29 (1 buffer day before game)

Compress Donegal 3→2 days (skip Malin Head), Connemara 3→2 days
(skip Inishbofin), Kerry 3→2 days (Dingle + Skellig/Ring of Kerry).
Cork Aug 27-28, drive to Dublin eve Aug 28, buffer day Aug 29, game Aug 30.
Update all section file date headers and Kerry itinerary.

locations/06h-cork.md

@@ -1,7 +1,7 @@
 # Cork
 
 > **Type:** City stop — between Kerry and Dublin
-> **Dates:** ~Aug 30–31 (2 nights)
+> **Dates:** ~Aug 27–28 (2 nights)
 > **Recommended stay:** 2 days
 > **Best for:** Food scene, rebel history, day trips to Kinsale and Blarney