fix(spec): regenerate spec-changes.json after the main merge

上一个合并提交用集合合并解决 spec-changes.json 的冲突,但该文件是
对象数组而非字符串数组,集合合并退化成「取变了的那一侧」,丢掉了
main 侧 #3355 的 object-managed-by-system-to-system-data 条目,
check:spec-changes 因此报 stale。

改为真的跑 gen:spec-changes(+ gen:upgrade-guide 确认无漂移)。
现三条条目齐备:retry-policy-converged、
object-managed-by-system-to-system-data、
job-retry-policy-constraints-tightened。

check:spec-changes / check:upgrade-guide / check:skill-docs 均绿。

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01M9uWvoEp9CoLzYjNExj9sL

Author: os-zhuang

packages/spec/spec-changes.json

@@ -247,6 +247,12 @@
         "to": "retry policy unified across job.retryPolicy and try_catch retry: base delay 'retryDelayMs' → 'backoffMs', and the pre-17 job defaults (maxRetries 3, backoffMultiplier 2) written out explicitly now that the merged default is 0 / 1 (#4661)",
         "conversionId": "retry-policy-converged",
         "toMajor": 17
+      },
+      {
+        "surface": "object.managedBy",
+        "to": "object managedBy 'system' → 'system-data' (#3355 — ADR-0103's residual bucket named the engine-owned half v16 had already moved out to `engine-owned`; the rename leaves the name describing what the bucket actually holds: admin/user-writable platform data)",
+        "conversionId": "object-managed-by-system-to-system-data",
+        "toMajor": 17
       }
     ],
     "migrated": [
@@ -786,6 +792,12 @@
           "to": "retry policy unified across job.retryPolicy and try_catch retry: base delay 'retryDelayMs' → 'backoffMs', and the pre-17 job defaults (maxRetries 3, backoffMultiplier 2) written out explicitly now that the merged default is 0 / 1 (#4661)",
           "conversionId": "retry-policy-converged",
           "toMajor": 17
+        },
+        {
+          "surface": "object.managedBy",
+          "to": "object managedBy 'system' → 'system-data' (#3355 — ADR-0103's residual bucket named the engine-owned half v16 had already moved out to `engine-owned`; the rename leaves the name describing what the bucket actually holds: admin/user-writable platform data)",
+          "conversionId": "object-managed-by-system-to-system-data",
+          "toMajor": 17
         }
       ],
       "migrated": [