{
"version": 1,
"status": "seed_fixture",
"placementDecision": "The canonical multi-repo RAG harness lives in ../difflore-test-e2e so it can reuse real fork corpora without bloating this OSS runtime repository. This file is the committed smoke fixture: small, stable, and copied into the external harness as the minimum contract.",
"rules": [
{
"id": "seed/gin-body-limit-413",
"title": "Return 413 for body size limit errors",
"body": "When Gin request bodies exceed the configured limit, return HTTP 413 and keep middleware assertions separate from route assertions.",
"filePatterns": ["**/*gin*_test.go", "**/*middleware*.go"],
"sourceRepo": "gin-gonic/gin"
},
{
"id": "seed/tokio-errgroup-context",
"title": "Propagate cancellation through errgroup contexts",
"body": "When spawning related async work, derive child tasks from the caller context and propagate cancellation instead of using detached background contexts.",
"filePatterns": ["**/*.rs"],
"sourceRepo": "tokio-rs/tokio"
},
{
"id": "seed/router-adapter-boundary",
"title": "Do not import router-core inside adapters",
"body": "Adapter packages must depend on the public adapter boundary and avoid direct router-core imports.",
"filePatterns": ["packages/*adapter*/**/*.ts", "src/adapters/**/*.ts"],
"sourceRepo": "tanstack/router"
},
{
"id": "seed/python-headers-mapping",
"title": "Use Mapping for request headers",
"body": "Python request helper APIs should accept Mapping[str, str] for headers rather than concrete dict so callers can pass immutable or framework-provided mappings.",
"filePatterns": ["**/*.py"],
"sourceRepo": "fastapi/fastapi"
},
{
"id": "seed/npm-publish-dry-run",
"title": "Dry-run package publishing before release",
"body": "Before publishing a package, run the package manager dry-run and inspect included files so generated artifacts and secrets do not ship accidentally.",
"filePatterns": ["package.json", "packages/**/package.json", ".github/workflows/*.yml"],
"sourceRepo": "cli/cli"
}
],
"cases": [
{
"id": "search/gin-body-limit",
"surface": "search_rules",
"query": "body size limit should return the right status in gin middleware tests",
"file": "router/gin_body_limit_test.go",
"intent": "edit failing middleware regression",
"expectedRuleIds": ["seed/gin-body-limit-413"],
"forbiddenRuleIds": ["seed/router-adapter-boundary", "seed/npm-publish-dry-run"],
"metrics": ["recall@3", "precision@3", "first_relevant_rank", "strict_file_match_correctness"],
"rationale": "Pins a same-language strict-file match where HTTP status behavior matters."
},
{
"id": "hook/tokio-cancellation",
"surface": "hook_post_edit",
"query": "spawned async work ignores cancellation",
"file": "crates/runtime/src/task_group.rs",
"intent": "post-edit add cancellation-aware task group",
"expectedRuleIds": ["seed/tokio-errgroup-context"],
"forbiddenRuleIds": ["seed/gin-body-limit-413", "seed/python-headers-mapping"],
"metrics": ["recall@5", "precision@5", "false_positive_rate"],
"rationale": "Covers hook injection where the edit diff, not a direct search query, should recall the rule."
},
{
"id": "search/router-boundary",
"surface": "search_rules",
"query": "adapter imports router-core directly",
"file": "packages/react-router-adapter/src/index.ts",
"intent": "remove direct core dependency from adapter",
"expectedRuleIds": ["seed/router-adapter-boundary"],
"forbiddenRuleIds": ["seed/tokio-errgroup-context"],
"metrics": ["recall@3", "first_relevant_rank", "strict_file_match_correctness"],
"rationale": "Protects repo-boundary rules that are easy to over-generalize."
},
{
"id": "search/python-header-type",
"surface": "search_rules",
"query": "headers parameter should accept immutable mapping",
"file": "fastapi/_compat/headers.py",
"intent": "type annotation cleanup",
"expectedRuleIds": ["seed/python-headers-mapping"],
"forbiddenRuleIds": ["seed/npm-publish-dry-run"],
"metrics": ["recall@3", "precision@3", "first_relevant_rank"],
"rationale": "Covers API typing guidance with language-specific file scope."
},
{
"id": "negative/readme-copy",
"surface": "search_rules",
"query": "rewrite README launch copy for pricing clarity",
"file": "README.md",
"intent": "documentation copy edit",
"expectedRuleIds": [],
"forbiddenRuleIds": [
"seed/gin-body-limit-413",
"seed/tokio-errgroup-context",
"seed/router-adapter-boundary",
"seed/python-headers-mapping",
"seed/npm-publish-dry-run"
],
"metrics": ["false_positive_rate"],
"rationale": "A documentation-only edit should not recall unrelated code-path rules."
}
]
}