Finch 1.0.0

A small, fast programming language on LLVM with C-like syntax.

- Lexer, recursive-descent parser, single-pass type checker + LLVM IR codegen, O2 pipeline
- Types: int/float/bool/char/str, sized i8..u64/f32/f64, pointers ptr[T] with addr()/.value/null
- Functions (fn ... -> T), if/else, while, for..in, break/continue, Go-style operator precedence
- Implicit conversions only when lossless; literals adapt to their target type
- Runtime checks for division by zero, MIN/-1 and null .value
- C interop: import "header.h" via libclang, link "lib" with pkg-config, link-error advice
- Human-readable errors with source excerpts
- Test suite (34 tests), examples, docs for beginners/technicians/engineers in English and Polish

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

examples/window.fn

@@ -0,0 +1,34 @@
+// A window that slowly changes color. Needs GLFW and OpenGL
+// (on Nix they are in shell.nix: run this inside nix-shell).
+import "GLFW/glfw3.h"
+import "GL/gl.h"
+import "math.h"
+link "glfw"
+link "GL"
+
+fn main() {
+    if glfwInit() == 0 {
+        print("could not start GLFW")
+        return
+    }
+
+    window := glfwCreateWindow(800, 600, "Finch", null, null)
+    if window == null {
+        print("could not open a window")
+        glfwTerminate()
+        return
+    }
+    glfwMakeContextCurrent(window)
+
+    while glfwWindowShouldClose(window) == 0 {
+        t := glfwGetTime()
+        glClearColor(f32(sin(t) * 0.5 + 0.5), 0.3, 0.6, 1.0)
+        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
+
+        glfwSwapBuffers(window)
+        glfwPollEvents()
+    }
+
+    glfwDestroyWindow(window)
+    glfwTerminate()
+}