[treyes133]

What & why

Closes #198: "Some people are just here for the love of the game. Let me turn off the card value views throughout the app so it can be just a collecting mode."

Settings → App → Collecting mode. The rule: no values and no % changes anywhere you browse or file cards. Tools you open to talk about money keep their numbers.

Hidden:

• The tin. The header becomes "312 cards in your tin" with no Portfolio link. Also gone: divider tray values, the divider/Everything plaque value, its performance chart and "Change vs" picker, flip-through values, the "Sold … for $X" caption, and the Highest value sort.
• Every PriceLabel and DeltaBadge (rows, grids, search, set and Pokédex grids, Discover tiles, "In your tin"), via a new \.hidesPrices environment value, so future uses inherit the rule.
• Card screen. The price block, history, "Grade it?" and the paid line go. Art, what the card is, your copies, population and marketplace links stay.
• Scan and add. Scan tray and review totals, the add form's "Holo · $12" labels, sealed values, and the binder lens.
• Discover. The price-defined shelves (Easy adds, Worth a think, Someday, Cheapest in 6 months, Down this week), the "what would you spend?" prompt, and "Chase · $X" → "Chase".
• The Movers tab and the Watching row, which are nothing but price movement.
• The widget shows the card count, with no change or sparkline. WidgetSnapshot.hidesPrices is optional so snapshots already on disk still decode, and the snapshot is republished when the toggle flips.

Kept, explicitly via .keepsPrices(): the wishlist (a target price means nothing without the market beside it), the For Trade list and trade sessions. Printed reports and trade sheets render outside the app's environment and are untouched, as is the catalog browser's price filter (a tool you open on purpose).

Stack (4 of 5). staging ← #201 (% fix) ← #202 (card screen, #197) ← #203 (sort/filter/grid, #193) ← #204 (collecting mode, #198) ← #205 (file all, #199). Merge in order. Merged branches aren't auto-deleted here, so after merging the PR below this one, delete its branch and GitHub retargets this one. If you squash-merge, this branch needs a rebase onto staging first; ask and I'll do it.

Checklist

• Tests pass locally: full iOS suite, 1291 passed / 0 failed / 3 skipped (new: Discover drops price shelves in collecting mode, and the widget snapshot round-trips the field and still decodes old snapshots)
• No secrets, .env, keys, or docs/ contents committed
• Targets staging (feature work), not main directly. Stacked: base is the PR below it until that merges.

⚠️ Not device-verified. It touches about 20 screens. Flip the toggle and walk the tin, a card, Discover, the scanner and the widget. The view-level gating has no unit tests.

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