feat(cli): ludic deps --writes warns about writes through a local alias

A local bound straight from another module's global (let t =
thing_cur), or from such a local, is followed within its function, and
a write through its field or element is listed as a warning after the
counted writes. A reference from a function's result is not followed.
Reseed.

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

examples/modules/tangle/a/index.ludic

@@ -7,3 +7,7 @@ export function a_run() -> int {
 export function a_two() -> int {
   return 2
 }
+export function a_bump() -> void {
+  let r = b_rec
+  r.n = r.n + 1
+}

examples/modules/tangle/b/index.ludic

@@ -1,6 +1,10 @@
 # b/index.ludic - uses a back: a and b are a cycle
 module b
 export var b_count: int = 0
+export property Tally {
+  n: int = 0
+}
+export var b_rec: Tally = new Tally
 export function b_run() -> int {
   return a_two() + c_one()
 }