patch: Feature/pkm autodetect (#15)

docs/assets-and-info-apis.md

@@ -22,9 +22,13 @@ Used by `MagicCardPreviewSource` to find a card printing from `name` + `setId`,
 Used by `PokemonSetSource` to fetch all sets. The parser maps `id`, `name`, and `releaseDate` directly into `Set`, then sorts ascending by release date.
 
 **Asset API:** `https://api.pokemontcg.io/v2/cards?q=...`  
-Used by `PokemonCardPreviewSource` to search by `name` plus optional `set.id` and collector number. It extracts `data[0].images.large` first and falls back to `images.small` if needed.
+Used by `PokemonCardPreviewSource` in two ways:
 
-The Pokemon source also normalizes collector numbers before request build. For example, `4/102` is reduced to `4` because the remote query expects only the printed number component.
+1. **Preview lookup (`fetchImageUrl`).** Search by `name` plus optional `set.id` and collector number. The parser takes `data[0].images.large` first and falls back to `images.small` if needed.
+
+2. **Auto-detect print (`detectFirstPrint` / `detectPrintVariants`, Pokémon edit dialog).** Uses the same endpoint with `name:"<name>"` and `set.id:<setId>` only — **no** `number:` clause — plus `select=name,number,rarity,set` and `pageSize=50` so the response stays small. If the set-scoped HTTP request fails, it retries with **`name:` only** and still filters rows in `PokemonCardPreviewSource::parsePrintVariants(...)` by the picker’s **`set.id`** (not the display set name). The dialog passes `card.set.id` into `CardPreviewService::detectPrintVariants(...)` on a worker thread so the modal stays responsive. Each matching `data[]` row whose **card name matches exactly** (case-insensitive) and whose embedded `set.id` equals the chosen set maps to `AutoDetectedPrint::setNo` as the API `number` field only (for example `25`, not `25/185`). `AutoDetectedPrint::rarity` is filled from the card’s `rarity` field but the Pokémon edit dialog does not auto-sync holo or other flags from it. Distinct `(setNo, rarity)` pairs are deduped. When both an exact card name and `set.id` are supplied, an upstream miss returns an error instead of blending unrelated sets from a broader payload. The edit dialog offers **Auto detect** (fills Set # from the first variant), **Next** (cycles distinct `setNo` values when multiple exist), silent prefetch on **Edit** open, and clears cached variants when **Name** or **Set** changes. The Set # field and persisted `PokemonCard::setNo` keep only the printed-number portion; values such as `4/104` are trimmed to `4` on load and save.
+
+The preview path normalizes collector numbers before request build. For example, `4/102` is reduced to `4` because the remote `number:` query expects only the printed-number component.
 
 ## Yu-Gi-Oh! APIs (Yugipedia + YGOPRODeck)
 
@@ -114,6 +118,6 @@ All source types return `Result<T, std::string>` errors so failures cross bounda
 - info API failures (bad set payload, schema mismatch, endpoint/network failure), and
 - asset API failures (query mismatch, no matching card, missing image fields, image download failure).
 
-When previews fail, verify request construction first (name sanitization, number normalization, percent encoding), then verify response shape assumptions: Scryfall (`data`, `image_uris`), Pokemon (`data`, `images.large`/`images.small`), Yu-Gi-Oh! Yugipedia (`query.pages.<id>.imageinfo[0].url` per filename, missing files tagged `"missing": ""`), Yu-Gi-Oh! YGOPRODeck fallback (`data`, `name`, `card_images`). If the UI fallback path succeeds (network card-back and/or bundled PNG), the panel shows the card-back image and the inline label `(image preview unavailable)`; only if every fallback fails does the preview stay empty with status text.
+When previews fail, verify request construction first (name sanitization, number normalization, percent encoding), then verify response shape assumptions: Scryfall (`data`, `image_uris`), Pokemon (`data`, `images.large`/`images.small`; auto-detect also needs `name`, `number`, `rarity`, and `set.id` on each matching row), Yu-Gi-Oh! Yugipedia (`query.pages.<id>.imageinfo[0].url` per filename, missing files tagged `"missing": ""`), Yu-Gi-Oh! YGOPRODeck fallback (`data`, `name`, `card_images`). If the UI fallback path succeeds (network card-back and/or bundled PNG), the panel shows the card-back image and the inline label `(image preview unavailable)`; only if every fallback fails does the preview stay empty with status text.
 
 For Yu-Gi-Oh! specifically, when a printing shows the wrong art compared with Yugipedia’s gallery, debug in this order: (1) verify the candidate list via `YuGiOhCardPreviewSource::buildCandidateFilenames(...)` against the actual file names on Yugipedia’s `Card_Gallery:<Card>` page; (2) confirm the dialog rarity name maps to the expected short code in `ygoRarityShortCode(...)` / `rarityCodeFor(...)` (extend the mapping when a new rarity surfaces); (3) confirm the `firstEdition` flag matches the printed edition stamp — the candidate ordering puts the printed edition first.