feat: staple library -- seitan, tempeh, firm tofu with yield format profiles

app/staples/seitan.yaml

@@ -0,0 +1,38 @@
+slug: seitan
+name: Seitan (Wheat Meat)
+description: High-protein wheat gluten that mimics the texture of meat. Can be made in bulk and stored in multiple formats.
+dietary_labels: [vegan, high-protein]
+base_ingredients:
+  - vital wheat gluten
+  - nutritional yeast
+  - soy sauce
+  - garlic powder
+  - vegetable broth
+base_method: simmer
+base_time_minutes: 45
+yield_formats:
+  fresh:
+    elements: [Structure, Depth, Richness]
+    shelf_days: 5
+    storage: airtight container, refrigerated in broth
+    methods: [saute, braise, grill, stir-fry]
+    texture: chewy, meaty
+  frozen:
+    elements: [Structure, Depth]
+    shelf_days: 90
+    storage: vacuum-sealed freezer bag
+    methods: [thaw then any method]
+    texture: slightly softer after thaw
+  braised:
+    elements: [Structure, Depth, Seasoning]
+    shelf_days: 4
+    storage: covered in braising liquid, refrigerated
+    methods: [serve directly, slice for sandwiches]
+    texture: tender, falling-apart
+  grilled:
+    elements: [Structure, Aroma, Texture]
+    shelf_days: 3
+    storage: refrigerated, uncovered to maintain crust
+    methods: [slice cold, reheat in pan]
+    texture: crisp exterior, chewy interior
+compatible_styles: [italian, latin, east_asian, eastern_european]

app/staples/tempeh.yaml

@@ -0,0 +1,28 @@
+slug: tempeh
+name: Tempeh
+description: Fermented soybean cake. Dense, nutty, high in protein. Excellent at absorbing marinades.
+dietary_labels: [vegan, high-protein, fermented]
+base_ingredients:
+  - tempeh block (store-bought or homemade from soybeans + starter)
+base_method: steam then marinate
+base_time_minutes: 20
+yield_formats:
+  raw:
+    elements: [Structure, Depth, Richness]
+    shelf_days: 7
+    storage: refrigerated in original packaging or wrapped
+    methods: [steam, crumble, slice]
+    texture: dense, firm
+  marinated:
+    elements: [Structure, Depth, Seasoning, Aroma]
+    shelf_days: 5
+    storage: submerged in marinade, refrigerated
+    methods: [bake, pan-fry, grill]
+    texture: chewy, flavor-dense
+  crumbled:
+    elements: [Structure, Depth, Texture]
+    shelf_days: 3
+    storage: refrigerated, use quickly
+    methods: [saute as ground meat substitute, add to tacos or pasta]
+    texture: crumbly, browned bits
+compatible_styles: [latin, east_asian, mediterranean]

app/staples/tofu_firm.yaml

@@ -0,0 +1,34 @@
+slug: tofu-firm
+name: Firm Tofu
+description: Pressed soybean curd. Neutral flavor, excellent at absorbing surrounding flavors. Freeze-thaw cycle creates meatier texture.
+dietary_labels: [vegan, high-protein]
+base_ingredients:
+  - firm or extra-firm tofu block
+base_method: press (30 min) then prepare
+base_time_minutes: 30
+yield_formats:
+  pressed_raw:
+    elements: [Structure]
+    shelf_days: 5
+    storage: submerged in water, refrigerated, change water daily
+    methods: [cube, slice, crumble]
+    texture: dense, uniform
+  freeze_thawed:
+    elements: [Structure, Texture]
+    shelf_days: 5
+    storage: refrigerated after thawing
+    methods: [squeeze dry, saute, bake]
+    texture: chewy, porous, absorbs marinades deeply
+  baked:
+    elements: [Structure, Texture, Aroma]
+    shelf_days: 4
+    storage: refrigerated, uncovered
+    methods: [add to stir-fry, bowl, salad]
+    texture: crisp exterior, chewy interior
+  silken:
+    elements: [Richness, Structure]
+    shelf_days: 3
+    storage: refrigerated, use within days of opening
+    methods: [blend into sauces, custards, dressings]
+    texture: silky, smooth
+compatible_styles: [east_asian, mediterranean]