Rename the collection fulfilment method to pickup (spec 0077)

[glennjacobs]

Implements spec 0077 (#2716) — renames the in-store handover vocabulary end to end from "collection"/"collected" to "pickup"/"picked up", matching Shopify's state vocabulary (WooCommerce "Local pickup", Magento "In-Store Pickup").

Note: stacked on #2716 (base: spec/0076-rename-collection-to-pickup), so this diff shows only the implementation. Merge #2716 first; GitHub retargets this PR to 2.x when the spec branch is deleted.

Slice 1 — the rename

• core: Drivers\FulfilmentMethods\Pickup (key pickup); states ReadyForPickup (ready-for-pickup) and PickedUp (picked-up); ShippingOption::$pickup replaces $collect and is stamped as meta['pickup'] by CreateShippingLine; orderCollects() → orderPicksUp(); factory states pickup() / pickedUp(); Cart::getEstimatedShipping() and ValidateCartForOrderCreation read the new flag.
• table-rate-shipping: ShippingMethods\Pickup driver (key pickup), ShippingManager::createPickupDriver(), driver select option.
• lang: key renames in core states.php / fulfilment.php, panel orders.php, admin order.php (16 locales each) and shipping shippingmethod.php (14 locales). Most locales already translated the concept as pickup, so values move with their keys; English values become "Pickup" / "Ready for Pickup" / "Picked Up" / "Mark picked up" / "Picked up at". Fixed literal mistranslations in the shipping driver labels: mn Цуглуулга → Очиж авах, bg Колекция → Получаване на място, fr Collecte → Retrait, pt_BR Coleta → Retirada.
• demo data: the pickup scenario seeds method => 'pickup'.
• tests/docblocks: core/panel/admin/shipping/demo-data suites, the panel vitest fixture, and every docblock mention follow the new vocabulary.

Slice 2 — upgrade path

• New data migration 2026_06_01_000017_rename_collection_shipping_driver rewrites persisted shipping_methods.driver 'collection' → 'pickup' (guarded, one-way, no-op without the table).
• LunarSetList: class rename Lunar\Shipping\Drivers\ShippingMethods\Collection → ...\Pickup; property rename ShippingOption::$collect → $pickup (v1 + v2 class strings).
• New RenameShippingOptionCollectArgRector rewrites the collect: named argument on ShippingOption construction (the parameter kept its position, so positional calls are unaffected).
• Spec open question resolved: v1's CreateShippingLine writes 'meta' => $shippingOption->meta verbatim and never persists the flag (verified against 1.x), so no order-line meta rewrite is needed.

Verification

• vendor/bin/pest --testsuite <s> --parallel for core (1288✓), admin (264✓), panel (936✓), filament (75✓), shipping (103✓), stripe (48✓), search (28✓), upgrade (103✓), demo-data (31✓)
• panel npm test (340✓), npm run type-check, add-on example build
• vendor/bin/phpstan analyse — no errors; vendor/bin/pint --dirty — pass
• translations completeness script — 0 missing, 0 stale across all locales

Existing v2 alpha databases hold stale values per the alpha policy — re-seed (demo data regenerates).

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