{
  "taskType": "trace-flow",
  "taskSummary": "Trace request handling from an App Router entry point to route execution for a server-rendered page.",
  "repoId": "https://github.com/vercel/next.js",
  "repoName": "vercel/next.js",
  "generatedAt": "2026-03-29T00:56:34.425Z",
  "keyFiles": [
    {
      "path": "packages/next/src/shared/lib/router/routes/app.ts",
      "reason": "Matches task terms: router, route",
      "importanceScore": 100,
      "relevanceScore": 172
    },
    {
      "path": "packages/next/src/shared/lib/router/router.ts",
      "reason": "Matches task terms: router, route",
      "importanceScore": 100,
      "relevanceScore": 157
    },
    {
      "path": "packages/next/src/export/types.ts",
      "reason": "Matches task terms: router, entry, route, page",
      "importanceScore": 70,
      "relevanceScore": 154
    },
    {
      "path": "packages/next/src/shared/lib/constants.ts",
      "reason": "Matches task terms: entry, point, route, page",
      "importanceScore": 70,
      "relevanceScore": 154
    },
    {
      "path": "packages/next/src/shared/lib/router/utils/index.ts",
      "reason": "Matches task terms: router, route",
      "importanceScore": 79,
      "relevanceScore": 151
    },
    {
      "path": "packages/next/src/client/router.ts",
      "reason": "Matches task terms: router, route",
      "importanceScore": 100,
      "relevanceScore": 148
    }
  ],
  "dependencyHubs": [
    {
      "path": "packages/next/src/shared/lib/isomorphic/path.js",
      "inboundCount": 1079,
      "outboundCount": 1,
      "role": "shared dependency"
    },
    {
      "path": "packages/next/src/server/next.ts",
      "inboundCount": 561,
      "outboundCount": 20,
      "role": "shared dependency"
    },
    {
      "path": "packages/next/cache.js",
      "inboundCount": 212,
      "outboundCount": 6,
      "role": "shared dependency"
    },
    {
      "path": "packages/next/src/shared/lib/router/routes/app.ts",
      "inboundCount": 127,
      "outboundCount": 3,
      "role": "shared dependency"
    },
    {
      "path": "packages/next/src/shared/lib/router/router.ts",
      "inboundCount": 11,
      "outboundCount": 41,
      "role": "orchestrator"
    }
  ],
  "entryPoints": [
    "packages/next/src/shared/lib/router/routes/app.ts",
    "packages/next/src/shared/lib/router/utils/index.ts",
    "packages/next/src/server/lib/incremental-cache/index.ts"
  ],
  "minimalContext": [
    {
      "path": "packages/next/src/shared/lib/router/routes/app.ts",
      "reason": "Matches task terms: router, route",
      "importanceScore": 100,
      "relevanceScore": 172
    },
    {
      "path": "packages/next/src/shared/lib/router/router.ts",
      "reason": "Matches task terms: router, route",
      "importanceScore": 100,
      "relevanceScore": 157
    },
    {
      "path": "packages/next/src/export/types.ts",
      "reason": "Matches task terms: router, entry, route, page",
      "importanceScore": 70,
      "relevanceScore": 154
    },
    {
      "path": "packages/next/src/shared/lib/constants.ts",
      "reason": "Matches task terms: entry, point, route, page",
      "importanceScore": 70,
      "relevanceScore": 154
    }
  ],
  "constraints": [
    "Prefer focused edits around the minimal context before widening scope.",
    "Treat high-fan-in modules as high-blast-radius surfaces.",
    "Confirm entry-point wiring before changing shared dependencies."
  ],
  "unknowns": [
    "Multiple plausible entry points exist, so the exact runtime path may need confirmation."
  ],
  "risks": [
    "Changes near `packages/next/src/shared/lib/router/routes/app.ts` may fan out widely because it is a high fan-in dependency.",
    "The packet includes entry-point files, so wiring regressions may affect a broad surface area."
  ],
  "recommendedNextSteps": [
    "Inspect `packages/next/src/shared/lib/router/routes/app.ts` first.",
    "Read `packages/next/src/shared/lib/router/router.ts` next to confirm the surrounding wiring.",
    "Use `test/e2e/app-dir/app-prefetch/app/invalid-url/from-router-prefetch/page.js` as the first validation target.",
    "Follow the highest-ranked entry point hop by hop before reading leaf modules."
  ],
  "validationTargets": [
    {
      "path": "test/e2e/app-dir/app-prefetch/app/invalid-url/from-router-prefetch/page.js",
      "reason": "Matches task terms: router, route, page"
    },
    {
      "path": "test/e2e/app-dir/parallel-routes-and-interception/app/intercepting-routes-dynamic-prerendered/photos/(.)[id]/page.js",
      "reason": "Matches task terms: route, rendered, page"
    },
    {
      "path": "test/e2e/app-dir/parallel-routes-and-interception/app/intercepting-routes-dynamic-prerendered/photos/[id]/page.js",
      "reason": "Matches task terms: route, rendered, page"
    },
    {
      "path": "test/e2e/app-dir/javascript-urls/app/app/router-prefetch/page.tsx",
      "reason": "Matches task terms: router, route, page"
    },
    {
      "path": "test/e2e/app-dir/javascript-urls/app/app/router-push/page.tsx",
      "reason": "Matches task terms: router, route, page"
    }
  ],
  "artifacts": [
    "task-packet"
  ],
  "confidence": 0.91,
  "details": {
    "startPoints": [
      "packages/next/src/shared/lib/router/routes/app.ts",
      "packages/next/src/shared/lib/router/utils/index.ts",
      "packages/next/src/server/lib/incremental-cache/index.ts"
    ],
    "pathCandidates": [
      "packages/next/src/shared/lib/router/routes/app.ts -> evals/evals/agent-000-app-router-migration-simple/pages/_app.tsx",
      "packages/next/src/shared/lib/router/routes/app.ts -> packages/next/src/server/dev/static-paths-worker.ts",
      "packages/next/src/shared/lib/router/utils/index.ts -> packages/next/src/client/resolve-href.ts",
      "packages/next/src/shared/lib/router/utils/index.ts -> packages/next/src/lib/create-client-router-filter.ts"
    ],
    "branchPoints": [
      "packages/next/src/server/next.ts",
      "packages/next/cache.js",
      "packages/next/src/shared/lib/router/routes/app.ts",
      "packages/next/src/shared/lib/router/router.ts"
    ],
    "sideEffects": [
      "Request/response boundaries may shape the observed behavior."
    ]
  }
}