go: Phase 7 generics closed — types 102/102, +30 cleared, total 556/556 [shapes-static-types-bidirectional]

Canonical generic functions: Map, Filter, Reduce, First end-to-end
type-check + run. Plus 20+ typer-only shape tests covering Apply,
Compose, ToMap, Swap, Box, Triple, ToSlice, Take, Send, Fill, Eq,
Values, Pair, Inspect, etc. Index synth (slice/array/map →
element type) added to typer.

v0 limitations stamped in tests: SX `/` is float (no int mod
emulation), `var r []T` indistinguishable from unbound, single-name
constraints opaque (no type-set arithmetic).

Shape locked in: "the parser recognizes shapes, the validator
recognizes roles." Same AST + different role-validators = different
guest semantics. Diary documents this as the lemma the kit should
extract — three deliverables (binding-groups, control-flow sentinels,
index synthesis) now all instantiate it.

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

lib/go/scoreboard.json

@@ -1,12 +1,12 @@
 {
   "language": "go",
-  "total_pass": 527,
-  "total": 527,
+  "total_pass": 556,
+  "total": 556,
   "suites": [
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     {"name":"parse","pass":179,"total":179,"status":"ok"},
-    {"name":"types","pass":77,"total":77,"status":"ok"},
-    {"name":"eval","pass":102,"total":102,"status":"ok"},
+    {"name":"types","pass":102,"total":102,"status":"ok"},
+    {"name":"eval","pass":106,"total":106,"status":"ok"},
     {"name":"runtime","pass":40,"total":40,"status":"ok"},
     {"name":"stdlib","pass":0,"total":0,"status":"pending"},
     {"name":"e2e","pass":0,"total":0,"status":"pending"}