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Author	SHA1	Message	Date
mikhail	1c735b124a	refactor: DFS solver → matrix-based linear algebra (MathNet.Numerics) ... - Rewrite ProductionSolver: system of linear equations A×x=b via LU/QR decomposition - Add ResourceClassifier: classify resources as target/intermediate/raw - Add RecipeMatrixBuilder: build coefficient matrix and RHS vector - Add DI container (Microsoft.Extensions.DependencyInjection) in CLI - Fix resource flow calculation (RecipeRate is total, not per-machine) - Fix recipes.json: moduleCategory → machineCategory (recipe #19) - Update tests: 30 tests covering solver, classifier, matrix builder - Update README: document matrix model, architecture, principles	2026-07-02 14:46:14 +03:00
mikhail	a8c9808062	fix: resolve 3 critical ProductionSolver bugs ... - Bug #1: CalculateExecution now filters product by targetResourceId instead of blindly taking .First() — fixes multi-product recipes - Bug #2: Replace visited HashSet with recipeOutput tracker — allows re-processing when demand increases (double targets on same resource) - Bug #3: Clamp effectiveSpeed to MinEffectiveSpeed (0.05) floor — prevents division by zero with heavy productivity module stacks Also: switch from Stack (DFS) to Queue (BFS) for more predictable resolution order; add 4 regression tests (24 total, all green)	2026-07-02 13:27:43 +03:00
mikhail	29507813e5	chore: add FactorioCalc.sln to src/	2026-07-02 13:16:59 +03:00
mikhail	eae7c066d1	feat: Factorio Space Age Production Calculator ... - Domain: immutable entities (Resource, Recipe, Machine, Module, etc.) - Data: JSON recipe repository (34 resources, 26 recipes, Space Age) - Solver: DFS-based production planner with module support - Reporting: Console, JSON, Excel exporters - CLI: solve/list commands with Spectre.Console - Tests: 20 unit tests (xUnit) all passing - Tech: C# .NET 10, MathNet.Numerics, ClosedXML Model: GPT-4.1 (OpenAI) — executed by pi coding agent	2026-07-02 13:08:25 +03:00