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>

tests/run/functions.fn

@@ -0,0 +1,28 @@
+fn fib(int n) -> int {
+    if n < 2 {
+        return n
+    }
+    return fib(n - 1) + fib(n - 2)
+}
+
+fn later() -> int {
+    return defined_below()
+}
+
+fn defined_below() -> int {
+    return 42
+}
+
+fn greet(str who) {
+    if who == "" {
+        return
+    }
+    print("hi", who)
+}
+
+fn main() {
+    print(fib(20))
+    print(later())
+    greet("")
+    greet("finch")
+}