feat: Implement peasant pack generation algorithm in PackGeneratorService including slot logic for commons, uncommons, lands, and wildcards, and add related documentation.

docs/development/devlog/2025-12-16-225700_peasant_algorithm.md

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+# Peasant Algorithm Implementation
+
+## Overview
+Implemented the detailed "Peasant" pack generation algorithm in `PackGeneratorService.ts`.
+
+## Changes
+- Updated `buildSinglePack` in `PackGeneratorService.ts` to include specific logic for Peasant rarity mode.
+- Implemented slot-based generation:
+    - Slots 1-6: Commons (Color Balanced)
+    - Slot 7: Common or "The List" (Simulated)
+    - Slots 8-11: Uncommons
+    - Slot 12: Land (20% Foil)
+    - Slot 13: Non-Foil Wildcard (Weighted by rarity)
+    - Slot 14: Foil Wildcard (Weighted by rarity)
+    - Slot 15: Marketing Token
+
+## Notes
+- Used existing helper methods `drawColorBalanced` and `drawUniqueCards`.
+- Simulated "The List" logic using available Common/Uncommon pools as exact "The List" metadata might not be available in standard pools provided to the generator.
+- Wildcard weights follow the specification (~49% C, ~24% U, ~13% R, ~13% M).

docs/development/devlog/2025-12-16-230500_multi_expansion_selection.md

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+# Multi-Expansion Selection
+
+## Objective
+Enhanced the "From Expansion" pack generation feature in the Cube Manager to allow users to select multiple expansions and use a searchable interface.
+
+## Implementation Details
+1.  **Searchable Interface**: Replaced the simple set dropdown with a dedicated set selection UI featuring a search input for fuzzy filtering by set name or code.
+2.  **Multi-Select Capability**: Users can now check multiple sets from the filtered list.
+3.  **Frontend State Refactor**: Migrated `selectedSet` (string) to `selectedSets` (string array) in `CubeManager.tsx`.
+4.  **Fetch Logic Update**: Updated `fetchAndParse` to iterate through all selected sets, fetching card data for each sequentially and combining the results into the parse pool.
+5.  **Generation Logic**: The existing `generateBoosterBox` logic now naturally consumes the combined pool of cards from multiple sets, effectively allowing for "Chaos Drafts" or custom mixed-set environments based on the user's selection.
+
+## Status
+Completed. The Cube Manager UI now supports advanced set selection scenarios.