chore: retire remaining convex infrastructure

- move self-hosted Convex infra and root placeholder into recycle

- update architecture docs to remove active infra/convex deployment guidance

- extend local-first Convex guard to block retired infra regressions

scripts/check-local-first-convex-guard.js

@@ -69,6 +69,17 @@ const RETIRED_ROOT_CONVEX_PATHS = [
   },
 ];
 
+const RETIRED_CONVEX_INFRA_PATHS = [
+  {
+    name: "Convex 自托管 infra",
+    pattern: /^infra\/convex(?:\/|$)/,
+  },
+  {
+    name: "根 storage-convex-bridge 占位文件",
+    pattern: /^storage-convex-bridge$/,
+  },
+];
+
 // ─── SQLite 迁移期 forbid ───────────────────────────────────
 // 在 SQLite 控制面迁移阶段（Phase 1-5），新增 Convex 控制面代码
 // （users/workspaces/sessions/policies/audit/outbox/share 等）
@@ -122,6 +133,7 @@ function usage() {
     "",
     `如需保留明确的 cloud/compat 直连，请在同一新增行加入 ${WAIVER}。`,
     "根 convex/ functions 源码已退役；如确需新增显式 cloud/compat Convex functions，应先放到明确的辅助目录并更新 guard。",
+    "infra/convex 自托管基础设施已退役到 recycle；不要重新引回 active 路径。",
     `SQLite 迁移期中新增 Convex 控制面代码（users/workspaces/grants/share 等）需加 ${MIGRATION_PERIOD_WAIVER} 标注迁移例外。`,
   ].join("\n");
 }
@@ -179,6 +191,10 @@ function isRetiredRootConvexPath(filePath) {
   return RETIRED_ROOT_CONVEX_PATHS.some((entry) => entry.pattern.test(filePath));
 }
 
+function isRetiredConvexInfraPath(filePath) {
+  return RETIRED_CONVEX_INFRA_PATHS.some((entry) => entry.pattern.test(filePath));
+}
+
 function isAllowedRuntimeAdapter(filePath) {
   return (
     filePath === "rust/crates/mnote-web/src/transport/convex.rs" ||
@@ -280,6 +296,15 @@ function checkLine(row) {
     ];
   }
 
+  if (isRetiredConvexInfraPath(row.filePath)) {
+    return [
+      {
+        ...row,
+        reason: `${RETIRED_CONVEX_INFRA_PATHS.find((entry) => entry.pattern.test(row.filePath)).name} 已软删除到 recycle；不要重新引回 active 路径或默认启动链路。`,
+      },
+    ];
+  }
+
   if (!isRuntimePath(row.filePath) || isAllowedRuntimeAdapter(row.filePath)) {
     if (!isActiveConvexPath(row.filePath)) {
       return [];
@@ -347,6 +372,16 @@ function runSelfTest() {
       lineNumber: 1,
       text: "  workspaces: defineTable({",
     },
+    {
+      filePath: "infra/convex/docker-compose.yml",
+      lineNumber: 1,
+      text: "services:",
+    },
+    {
+      filePath: "storage-convex-bridge",
+      lineNumber: 1,
+      text: "",
+    },
   ];
   const violations = rows.flatMap(checkLine);
   const labels = violations.map((item) => item.filePath);
@@ -374,6 +409,12 @@ function runSelfTest() {
   if (!labels.includes("convex/workspaces_migration.ts")) {
     throw new Error("self-test 失败：未拦截迁移期新增 Convex 控制面 workspaces 代码");
   }
+  if (!labels.includes("infra/convex/docker-compose.yml")) {
+    throw new Error("self-test 失败：未拦截退役的 Convex infra 回流");
+  }
+  if (!labels.includes("storage-convex-bridge")) {
+    throw new Error("self-test 失败：未拦截根 storage-convex-bridge 占位文件回流");
+  }
   console.log(JSON.stringify({ ok: true, guard: "local-first-convex", selfTest: true }, null, 2));
 }