feat!: Split site into public and private sections

Moved the Copper Chronicle and resume into a private git submodule
(src/private), visible only to authenticated users. Added a lock symbol
to the mdbook sidebar for restricted sections. Reorganized nginx/nix
configuration files into a dedicated folder. Removed one-line descriptions
from the menu. Reduced custom CSS to better align the main website's theme
with mdbook's native styling. Personalized the index and blog introduction
pages.

src/recipes/breakfast/README.md

@@ -0,0 +1,8 @@
+# Breakfast Recipes
+
+Morning meals to start your day.
+
+- [German Pancakes (Crepes)](german-pancakes.md)
+- [Pancake, Fried Ham, Runny Egg, & Avocado](pancake-fried-ham-runny-egg-avocado.md)
+- [Egg Scramble with Sweet Potato, Black Bean, & Ground Beef](egg-scramble-sweet-potato-black-bean-ground-beef.md)
+- [Protein Purple Potato Pancakes (Proplto Cakes)](protein-purple-potato-pancakes.md)

src/recipes/breakfast/egg-scramble-sweet-potato-black-bean-ground-beef.md

@@ -0,0 +1,16 @@
+*Source: Abby*
+
+## Ingredients
+- Eggs
+- Ground beef
+- Sweet potato, diced
+- Black beans
+- Green enchilada sauce
+- Onions
+- Seasonings (cumin, chili powder)
+
+## Instructions
+1. Cook ground beef with onions and seasonings.
+2. Add diced sweet potato, cook until tender.
+3. Add black beans and enchilada sauce, heat through.
+4. Scramble eggs in the mixture.

src/recipes/breakfast/german-pancakes.md

@@ -0,0 +1,15 @@
+*Source: Abby*
+
+## Ingredients
+- Eggs
+- Milk
+- Flour
+- Butter
+- Salt
+- Vanilla extract (optional)
+
+## Instructions
+1. Blend eggs, milk, flour, and salt until smooth.
+2. Heat butter in a pan, pour thin layer of batter.
+3. Cook until edges lift, flip and cook other side.
+4. Serve with jam, cream, or savory fillings.

src/recipes/breakfast/pancake-fried-ham-runny-egg-avocado.md

@@ -0,0 +1,17 @@
+*Source: Abby*
+
+## Description
+A hearty breakfast stack.
+
+## Ingredients
+- Pancake batter
+- Ham slices
+- Eggs
+- Avocado
+- Butter for cooking
+
+## Assembly
+1. Cook pancake as base.
+2. Fry ham until crispy.
+3. Fry egg to desired doneness.
+4. Stack: pancake, ham, egg, sliced avocado on top.

src/recipes/breakfast/protein-purple-potato-pancakes.md

@@ -0,0 +1,17 @@
+*Source: Matt*
+
+## Ingredients
+- Purple potatoes, cooked and mashed
+- Eggs
+- Protein powder (vanilla or unflavored)
+- Oat flour
+- Baking powder
+- Cinnamon
+- Salt
+- Milk
+
+## Instructions
+1. Mix mashed purple potatoes with eggs.
+2. Add protein powder, oat flour, baking powder, cinnamon, salt.
+3. Add milk to desired consistency.
+4. Cook on griddle like regular pancakes.