go: Phase 9 closed — 12 end-to-end programs, total 609/609 [nothing]

12 canonical Go programs running through the full pipeline (lex +
parse + types + eval + sched + stdlib): sieve-of-Eratosthenes via
boolean slice (modulo-free), linear search, slice reverse, fib(10),
sum-of-squares via generic Map+Reduce, word-freq counter, channel
pipeline (gen→sq→sum), worker pool, bubble sort, sentence-reverse,
Filter+len, Ackermann, defer+recover on div-by-zero.

Each test threads ONE self-contained Go program through go-eval-
program. The v0 limitations chiselled in earlier phases (float
division, sync spawn, type erasure, nil-as-unbound) are now
durable as commit-trail artifacts; e2e variants written to avoid
them where possible. HTTP-ish ping-pong + WaitGroup deferred
(real preemption + sync package needed).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

lib/go/scoreboard.json

@@ -1,7 +1,7 @@
 {
   "language": "go",
-  "total_pass": 597,
-  "total": 597,
+  "total_pass": 609,
+  "total": 609,
   "suites": [
     {"name":"lex","pass":129,"total":129,"status":"ok"},
     {"name":"parse","pass":179,"total":179,"status":"ok"},
@@ -9,6 +9,5 @@
     {"name":"eval","pass":106,"total":106,"status":"ok"},
     {"name":"runtime","pass":40,"total":40,"status":"ok"},
     {"name":"stdlib","pass":41,"total":41,"status":"ok"},
-    {"name":"e2e","pass":0,"total":0,"status":"pending"}
-  ]
+    {"name":"e2e","pass":12,"total":12,"status":"ok"}]
 }