zc: untyped local const, c precedence for && and ||, import fixes for every module

const name = value; inside a function declares a local constant that takes
the initializer's type. the let quick fix now writes a bare const.

the self-hosted compiler bound || tighter than &&, unlike zc0 and the
readme. no existing source mixed them without parentheses, so only new
code was affected.

missing-name diagnostics and their quick fixes now search every module:
rt, core, run, loaded files, and std, icon and actor scanned from source,
including static groups (std.Text.itoa). typos suggest module exports
(putc -> rt.put_c) and get a change-to fix.

1 files changed, 11 insertions, 0 deletions

diff --git a/tests/programs/const_local.zc b/tests/programs/const_local.zc
new file mode 100644
index 0000000..83c423c
--- /dev/null
+++ b/tests/programs/const_local.zc
@@ -0,0 +1,11 @@
+// a local const without a type takes its initializer's type and can't be written.
+include rt;
+fn main() {
+	const k = 6, j = k * 7;
+	const half = 2.5;
+	const name = "zc";
+	int typed = j;
+	rt.put_n(k); rt.put_c(32); rt.put_n(typed); rt.put_c(32);
+	if (half > 2.0) rt.put_s(name);
+	rt.put_c(10);
+}