feat(ui): Material 3 redesign, cover-photo viewer, About screen

Apply a Material 3 seed-green palette and rounded components across the
home, inventory, quick-add, quantity picker and variety-detail screens.
The full-screen photo viewer can now set any photo as the cover (via
attachment sort order) and delete after confirmation. Lot forms and
packaging surface as choice chips.

Extract About out of Settings into its own screen (app version via
package_info_plus, website link). Add es/en strings for the new lot
types, presentation, home tagline and About. Update Seedees v2 mockups.

apps/app_seeds/lib/i18n/en.i18n.json

@@ -11,14 +11,21 @@
     "comingSoon": "Coming soon"
   },
   "home": {
+    "tagline": "Share and grow local seeds",
     "openMarket": "Open market",
-    "yourInventory": "Your inventory"
+    "openMarketSubtitle": "Browse and exchange",
+    "yourInventory": "Your inventory",
+    "yourInventorySubtitle": "Manage your seeds"
   },
   "photo": {
     "camera": "Take a photo",
-    "gallery": "Choose from gallery"
+    "gallery": "Choose from gallery",
+    "setAsCover": "Set as cover",
+    "isCover": "Cover photo",
+    "deleteConfirm": "Delete this photo?"
   },
   "menu": {
+    "tagline": "your seed bank",
     "inventory": "Inventory",
     "market": "Market",
     "profile": "Your profile",
@@ -33,7 +40,21 @@
     "langEs": "Español",
     "langEn": "English",
     "about": "About",
-    "aboutText": "Local-first, encrypted inventory for traditional seeds. AGPL-3.0."
+    "aboutText": "Local-first, encrypted inventory for traditional seeds. AGPL-3.0.",
+    "aboutOpen": "About Tanemaki"
+  },
+  "about": {
+    "title": "About",
+    "kanji": "種まき",
+    "tagline": "A local-first, decentralized app for managing and sharing traditional seeds and seedlings.",
+    "intro": "Tanemaki (種まき, \"to sow / scatter seeds\" in Japanese; short name Tane, 種 \"seed\") helps people and collectives keep a friendly inventory of their seed bank, decide what they offer, and share it locally — without a central intermediary that could control, censor, or be fined for it. The goal is both practical and political: to support traditional seed varieties and push back against the seed monopoly.",
+    "heritage": "The name honors the old Japanese mutual-aid traditions around rice — yui (shared community labour) and tanomoshi (reciprocity funds) — that inspired the paper Plantare, the \"community currency for seed exchange\" (BAH-Semillero, 2009, CC-BY-SA). Tanemaki is the digital Plantare.",
+    "version": "Version",
+    "license": "License",
+    "licenseValue": "AGPL-3.0",
+    "website": "Website",
+    "openSourceLicenses": "Open-source licenses",
+    "openSourceLicensesSubtitle": "Third-party libraries and their licenses"
   },
   "inventory": {
     "title": "Inventory",
@@ -101,7 +122,20 @@
   },
   "lotType": {
     "seed": "Seeds",
-    "plant": "Plants"
+    "plant": "Plant",
+    "seedling": "Seedling",
+    "tree": "Tree / shrub",
+    "bulb": "Bulb / tuber",
+    "cutting": "Cutting"
+  },
+  "presentation": {
+    "title": "Packaging",
+    "none": "Unspecified",
+    "pot": "Pot",
+    "tray": "Tray",
+    "plug": "Plug",
+    "bareRoot": "Bare-root",
+    "rootBall": "Root-ball"
   },
   "unit": {
     "aFew": "a few",
@@ -127,6 +161,9 @@
     "plant": { "singular": "plant", "plural": "plants" },
     "pot": { "singular": "pot", "plural": "pots" },
     "tray": { "singular": "tray", "plural": "trays" },
+    "seedling": { "singular": "seedling", "plural": "seedlings" },
+    "tree": { "singular": "tree", "plural": "trees" },
+    "cutting": { "singular": "cutting", "plural": "cuttings" },
     "grams": { "singular": "gram", "plural": "grams" },
     "count": { "singular": "seed", "plural": "seeds" }
   }