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/c_import.fn

@@ -0,0 +1,23 @@
+// Use any C library: import its header and call it.
+import "stdio.h"
+import "math.h"
+import "stdlib.h"
+import "string.h"
+
+fn main() {
+    printf("printf works: %d + %d = %d\n", 2, 3, 2 + 3)
+    puts("so does puts")
+
+    print("sqrt(2) =", sqrt(2))
+    print("pi from math.h:", M_PI)
+    print("strlen(\"finch\") =", strlen("finch"))
+    print("RAND_MAX =", RAND_MAX, "EOF =", EOF)
+
+    // memory from C: malloc gives a ptr, free gives it back
+    ptr[i32] n = malloc(4)
+    n.value = 7
+    print("from the heap:", n.value)
+    free(n)
+
+    fprintf(stderr, "this goes to stderr\n")
+}