From 46e6d94edb3780be07d0a91ef24e10d504578f7a Mon Sep 17 00:00:00 2001
From: miteruzo <miteruzo@naver.com>
Date: Sat, 18 Jul 2026 23:38:16 +0900
Subject: [PATCH] #399

---
 AGENTS.md                                     | 28 +++++++++++++++++--
 frontend/src/lib/postNewQueryState.test.ts    |  8 +++---
 frontend/src/lib/postNewQueryState.ts         |  2 +-
 .../pages/posts/PostImportSourcePage.test.tsx |  2 +-
 4 files changed, 32 insertions(+), 8 deletions(-)

diff --git a/AGENTS.md b/AGENTS.md
index 17e380a..1b27081 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -574,8 +574,32 @@ and layout reuse, follow `frontend/AGENTS.md`.
   wording and placement before implementing it.
 - Do not invent replacement copy when removing unrequested wording.
 - Do not create, modify, or run tests unless the user explicitly asks for
-  test work. When the user asks for tests, keep working and rerun them until
-  they pass or the remaining failure is clearly blocked.
+  test work. When the user asks for tests, keep working within the permitted
+  test-file scope and rerun them until they pass or the remaining failure is
+  clearly blocked.
+- Test-only work includes adding, updating, deleting, reorganising, or fixing
+  SyntaxError in tests. During test-only work, do not modify production code.
+- During test-only work, do not change production constants, behaviour, API
+  contracts, validation, routes, authentication, permissions, UI, copy,
+  dependencies, limits, thresholds, defaults, migrations, schema, or
+  environment settings to satisfy tests.
+- Do not make production code match failing tests, mock assumptions, fixtures,
+  snapshots, old expectations, or stale setup. This includes changing
+  production constants merely because a test expects a different value.
+- If test work reveals a production bug, spec mismatch, or missing behaviour,
+  stop without modifying production code and report: the failing test or
+  discovered issue, the related production file, the actual behaviour, the
+  expected behaviour, and why a production change appears necessary.
+- Modify production code for test failures only when the user explicitly asks
+  for that production change. Do not expand a test task into a production task
+  on your own authority.
+- If the user explicitly asks for both production implementation and test
+  updates, implement production code to the confirmed specification first,
+  then add or update tests to verify that specification. Never roll production
+  behaviour back to satisfy old tests.
+- If it is unclear whether the test or the production implementation is stale,
+  or a test cannot be corrected without changing production code, ask the user
+  instead of guessing.
 
 ## Backend rules
 
diff --git a/frontend/src/lib/postNewQueryState.test.ts b/frontend/src/lib/postNewQueryState.test.ts
index 99dec3e..720dc73 100644
--- a/frontend/src/lib/postNewQueryState.test.ts
+++ b/frontend/src/lib/postNewQueryState.test.ts
@@ -29,15 +29,15 @@ describe ('post new review URL state', () => {
 	.toEqual (['one', 'two'])
   })
 
-  it ('allows at most a 4095-byte request target', () => {
+  it ('allows at most a 6 143 byte request target', () => {
     const baseUrl = 'https://example.com/'
     const baseLength = postNewReviewPathByteLength ([baseUrl])
-    const allowed = `${ baseUrl }${ 'a'.repeat (4_095 - baseLength) }`
+    const allowed = `${ baseUrl }${ 'a'.repeat (6_143 - baseLength) }`
     const denied = `${ allowed }a`
 
-    expect (postNewReviewPathByteLength ([allowed])).toBe (4_095)
+    expect (postNewReviewPathByteLength ([allowed])).toBe (6_143)
     expect (isPostNewReviewPathWithinLimit ([allowed])).toBe (true)
-    expect (postNewReviewPathByteLength ([denied])).toBe (4_096)
+    expect (postNewReviewPathByteLength ([denied])).toBe (6_144)
     expect (isPostNewReviewPathWithinLimit ([denied])).toBe (false)
   })
 })
diff --git a/frontend/src/lib/postNewQueryState.ts b/frontend/src/lib/postNewQueryState.ts
index cf55fd3..86bcb4e 100644
--- a/frontend/src/lib/postNewQueryState.ts
+++ b/frontend/src/lib/postNewQueryState.ts
@@ -1,5 +1,5 @@
 const POST_NEW_REVIEW_PATH_PREFIX = '/posts/new?urls='
-const MAX_POST_NEW_REVIEW_TARGET_BYTES = 4_096
+const MAX_POST_NEW_REVIEW_TARGET_BYTES = 6_144
 
 const textEncoder = new TextEncoder ()
 
diff --git a/frontend/src/pages/posts/PostImportSourcePage.test.tsx b/frontend/src/pages/posts/PostImportSourcePage.test.tsx
index c2d3687..6e28d94 100644
--- a/frontend/src/pages/posts/PostImportSourcePage.test.tsx
+++ b/frontend/src/pages/posts/PostImportSourcePage.test.tsx
@@ -60,7 +60,7 @@ describe ('PostImportSourcePage', () => {
     const input = screen.getByRole ('textbox', { name: '' })
 
     fireEvent.change (input, {
-      target: { value: `https://example.com/${ 'a'.repeat (4_100) }` } })
+      target: { value: `https://example.com/${ 'a'.repeat (6_200) }` } })
 
     expect (screen.getByRole ('button', { name: '次へ' })).toBeDisabled ()
   })