cid(review): PASS — 9 gen_*_v0 Go wrappers with conformance tests

Author: CID Agent

.claude/agent-memory/review/MEMORY.md

@@ -10,8 +10,6 @@ Review patterns, quality gate knowledge, and common issues accumulated across CI
 - Java tests are NOT part of `mise run check` or pre-push hooks — must run `mvn test` explicitly
 - Go tests are NOT part of `mise run check` or pre-push hooks — must run
     `cd packages/go && mise exec -- go test ./...` explicitly
-- The advance commit is at HEAD (not HEAD~1) when review runs — use `git diff HEAD~1..HEAD` for the
-    advance diff, not `HEAD~2..HEAD~1` (that's the define-next diff)
 
 ## Common Issues
 
@@ -29,6 +27,8 @@ Review patterns, quality gate knowledge, and common issues accumulated across CI
 - For Java conformance test reviews: verify vector count matches expected (46 total:
     16+5+3+5+3+2+4+3+5), check `mvn test` output for 0 failures, compare structure against Node.js
     conformance tests in `crates/iscc-napi/__tests__/conformance.test.mjs`
+- For Go conformance test reviews: same 46 vector count, check `go test -v` output shows all
+    subtests pass, verify memory helpers handle empty/nil inputs correctly
 - Clippy workspace check is fast (~2s) after initial build — always run it
 - Documentation-only changes (READMEs, markdown): `mise run check` + clippy is sufficient — no need
     to run full test suites since no code was modified
@@ -42,3 +42,5 @@ Review patterns, quality gate knowledge, and common issues accumulated across CI
 - Git log shows iteration numbering resets when a new CID run starts (iteration 12 → iteration 1) —
     this is normal, each `mise run cid:run` starts a new run
 - Go via mise requires `mise exec --` prefix — `go` is not on PATH in all environments
+- The advance commit is at HEAD (not HEAD~1) when the handoff references `HEAD~2..HEAD~1` — use
+    `git diff HEAD~1..HEAD` for the advance diff

.claude/context/handoff.md

@@ -1,40 +1,38 @@
-## 2026-02-25 — Add 9 gen\_\*\_v0 Go wrappers with conformance tests
+## 2026-02-25 — Review of: Add 9 gen\_\*\_v0 Go wrappers with conformance tests
 
-**Done:** Implemented all 9 `gen_*_v0` Go wrappers on `*Runtime` (GenMetaCodeV0, GenTextCodeV0,
-GenImageCodeV0, GenAudioCodeV0, GenVideoCodeV0, GenMixedCodeV0, GenDataCodeV0, GenInstanceCodeV0,
-GenIsccCodeV0) with 4 memory helper functions (writeBytes, writeI32Slice, writeStringArray,
-writeI32ArrayOfArrays) and a shared callStringResult helper. Added conformance tests covering all 46
-vectors from data.json across all 9 functions.
+**Verdict:** PASS
 
-**Files changed:**
+**Summary:** All 9 `Gen*CodeV0` Go wrappers implemented on `*Runtime` with 4 memory helpers
+(`writeBytes`, `writeI32Slice`, `writeStringArray`, `writeI32ArrayOfArrays`) and a shared
+`callStringResult` helper. Conformance tests cover all 46 vectors from data.json across all 9
+functions. Clean, well-structured code with proper error handling and memory cleanup on all paths.
 
-- `packages/go/iscc.go`: Added `encoding/binary` import, 4 memory helpers (writeBytes,
-    writeI32Slice, writeStringArray, writeI32ArrayOfArrays), callStringResult helper, and 9
-    gen\_\*\_v0 public methods. Updated package docstring.
-- `packages/go/iscc_test.go`: Added 9 conformance test functions (TestGenMetaCodeV0 through
-    TestGenIsccCodeV0) with JSON vector parsing helpers. Each function iterates all vectors for its
-    function type using Go subtests.
+**Verification:**
 
-**Verification:** All tests pass:
+- [x] `cd packages/go && CGO_ENABLED=0 go test -v -count=1 ./...` passes — 14 tests pass (5 existing
+    \+ 9 new conformance tests covering 46 vectors)
+- [x] `cd packages/go && go vet ./...` exits 0 — clean
+- [x] All 9 `Gen*CodeV0` methods exist on `*Runtime` type — confirmed in iscc.go
+- [x] Each conformance test vector produces an ISCC string matching expected output from data.json —
+    all 46 subtests pass
+- [x] `mise run check` — all 14 pre-commit hooks pass
+- [x] No quality gate circumvention — no lint suppressions, test skips, or hook weakening in diff
 
-- `cd packages/go && CGO_ENABLED=0 go test -v -count=1 ./...` — 14 tests pass (5 existing + 9 new
-    conformance test functions covering 46 total vectors)
-- `cd packages/go && go vet ./...` — clean
-- `mise run check` — all 14 pre-commit hooks pass
+**Issues found:**
+
+- (none)
 
 **Next:** Add Go CI job in `.github/workflows/ci.yml` to run `go test` and `go vet` in CI. The Go
 module scaffold and all 9 gen functions are complete — CI integration is the natural next step to
-protect against regressions.
+protect against regressions. After CI, consider adding the remaining 12 Tier 1 utility function
+wrappers (text utilities, algorithm primitives, streaming types).
 
 **Notes:**
 
-- Empty slice handling required careful treatment: `iscc_alloc(0)` returns a dangling pointer with
-    alignment 1, which is fine for `*const u8` (bytes) but causes `slice::from_raw_parts` to panic
-    for `*const i32` (requires alignment 4). Fixed `writeI32Slice` to allocate minimum 4 bytes for
-    empty slices, ensuring proper i32 alignment. `writeBytes` uses `iscc_alloc(0)` directly since u8
-    has alignment 1.
-- Meta test vectors with dict values (e.g., `{"some": "object"}`) are JSON-serialized in the Go test
-    before passing to the FFI, matching how the Rust conformance tests handle them.
-- The `writeI32Slice` helper returns 3 values (ptr, allocSize, count) instead of 2, because
-    allocSize may differ from count\*4 when allocating a minimum 4 bytes for empty slices. This
-    ensures correct deallocation.
+- The `allocEntry` type is defined locally in both `writeStringArray` and `writeI32ArrayOfArrays` —
+    minor duplication but acceptable since they're unexported local types. Could be extracted to a
+    package-level type in a future cleanup.
+- Go tests create a new Runtime per test function (not per subtest). This is efficient since wazero
+    module instantiation is the expensive part and subtests share it.
+- The `TextClean` method could be refactored to use `callStringResult` for consistency, but it was
+    pre-existing code and out of scope for this iteration.

.claude/context/iterations.jsonl

@@ -224,3 +224,7 @@
 {"ts":"2026-02-24T23:13:36.197646+00:00","iteration":6,"role":"define-next","status":"OK","turns":30,"cost_usd":1.271421,"duration_s":256.6}
 {"ts":"2026-02-24T23:22:11.856865+00:00","iteration":6,"role":"advance","status":"OK","turns":53,"cost_usd":2.737253,"duration_s":515.7}
 {"ts":"2026-02-24T23:24:40.607790+00:00","iteration":6,"role":"review","status":"PASS","verdict":"PASS"}
+{"ts":"2026-02-24T23:25:25.292912+00:00","iteration":6,"role":"review","status":"OK","turns":35,"cost_usd":1.057327,"duration_s":193.4}
+{"ts":"2026-02-24T23:49:09.727937+00:00","iteration":7,"role":"update-state","status":"OK","turns":24,"cost_usd":0.876271,"duration_s":230.6}
+{"ts":"2026-02-24T23:53:18.683622+00:00","iteration":7,"role":"define-next","status":"OK","turns":26,"cost_usd":1.236589,"duration_s":248.9}
+{"ts":"2026-02-25T00:02:12.051070+00:00","iteration":7,"role":"advance","status":"OK","turns":58,"cost_usd":3.403787,"duration_s":533.4}

.claude/context/learnings.md

@@ -244,6 +244,13 @@ Accumulated knowledge from CID iterations. Each review agent appends findings he
     freed
 - `text_clean` does NOT collapse double spaces within a line — use NFKC ligature normalization
     (e.g., fi ligature U+FB01 → "fi") for test cases instead of space-collapsing expectations
+- WASM i32 alignment: `iscc_alloc(0)` returns a dangling pointer with alignment 1, which panics in
+    `slice::from_raw_parts` for `*const i32` (needs alignment 4). `writeI32Slice` must allocate
+    minimum 4 bytes for empty slices to ensure proper alignment. `writeBytes` (u8) is fine with
+    alignment 1
+- Go conformance test pattern: `json.RawMessage` for deferred parsing + helper functions
+    (`parseBits`, `parseStreamData`, `parseF64Array`, `f64ToI32`, `f64ToByte`). Meta test vectors
+    with dict values need `json.Marshal` to serialize back to string before passing to FFI
 
 ## Publishing