Codegraph Tmpdir Defaults Gate Review Rejected

recommendation: REJECT

blockers:

• .omo/evidence/codegraph-tmpdir-defaults-code-review.md:4 records only "REJECTED before evidence hygiene fix" and does not provide a final post-fix approving review.
• .omo/evidence/codegraph-tmpdir-defaults-code-review.md:6 documents only trailing-whitespace and stale-artifact blockers; it does not explicitly show the required programming skill-perspective check, remove-ai-slops overfit/slop pass, or coverage for excessive/useless tests, tautological tests, implementation-mirroring tests, deletion-only tests, and unnecessary production extraction/parsing/normalization.

originalIntent: Review the CodeGraph tmpdir exclusion PR from the user's perspective. The expected change is that CodeGraph skips default OS temp roots on all platforms, supports tmpdir injection for tests, preserves exclude-only configuration without an include override, documents excluded_roots/defaults/CODEGRAPH_NO_DAEMON/dead-store GC without machine-local drift, and provides evidence-bound QA.

desiredOutcome: Approve only if the diff, docs, bundled dist, tests, manual QA, and review artifacts all support the requested behavior and the evidence contains the mandatory programming and remove-ai-slops review coverage.

userOutcomeReview: The source diff itself appears scoped to the desired behavior: packages/utils/src/codegraph/exclusion.ts adds a typed tmpdir option and includes the OS temp directory in default excluded roots; packages/omo-codex/README.md documents exclude-only roots, default temp/state exclusions, managed CodeGraph env flags, and dead-store pruning without machine-local docs paths. The generated dist/cli.js and dist/serve.js include the same exclusion change and git diff --summary origin/dev..HEAD shows no mode drift. Focused tests and component tests passed locally. However, approval is blocked because the committed code review artifact does not show the required skill-perspective and overfit/slop review coverage.

checked artifact paths:

• .omo/evidence/20260706-cg-tmpdir/README.md
• .omo/evidence/codegraph-tmpdir-defaults-code-review.md
• .omo/evidence/20260706-cg-tmpdir/green-codegraph-exclusion-test.txt
• .omo/evidence/20260706-cg-tmpdir/green-codegraph-component-tests.txt
• .omo/evidence/20260706-cg-tmpdir/gate-typecheck.txt
• .omo/evidence/20260706-cg-tmpdir/live-sessionstart-proof.json
• .omo/evidence/20260706-cg-tmpdir/live-sessionstart-isolation.txt
• packages/utils/src/codegraph/exclusion.ts
• packages/utils/src/codegraph-exclusion.test.ts
• packages/utils/src/codegraph-workspace.test.ts
• packages/omo-codex/README.md
• packages/omo-codex/plugin/components/codegraph/dist/cli.js
• packages/omo-codex/plugin/components/codegraph/dist/serve.js
• packages/omo-codex/plugin/components/codegraph/src/hook.ts
• packages/omo-codex/plugin/components/codegraph/src/serve.ts

verification performed:

• Loaded omo:remove-ai-slops and omo:programming criteria, including the TypeScript reference.
• Inspected git log --oneline origin/dev..HEAD, git diff --stat, git diff --name-status, source/docs/dist diffs, and committed evidence.
• Ran git diff --check origin/dev..HEAD: exit 0.
• Ran /Users/yeongyu/.bun/bin/bun test packages/utils/src/codegraph-exclusion.test.ts: 3 pass, 0 fail.
• Ran bun test test in packages/omo-codex/plugin/components/codegraph: 53 pass, 0 fail.
• Ran direct slop/overfit pass over the production diff and tests. No direct unresolved slop blocker found in the changed production code or added tests.

exact evidence gaps:

• The code review report is not a final code review of the post-fix state; it is a short note about prior hygiene blockers and their claimed resolution.
• The code review report does not explicitly document the mandatory programming criteria or remove-ai-slops overfit/slop checks. Because final gate rules require rejection when this report coverage is absent, the PR cannot be approved even though focused behavior checks passed.