P18.a-d Diff0
Before 5211acfe95a0c6d82a60e2524b5e46b47fe67a3e
After bb35b941115a0a9f818e8512eebe67c29ee68355
Threshold: ZERO omitted events, ZERO payload tolerances, ZERO unexpected per-stream order changes. Object keys sorted; arrays and every duplicate/null/optional value preserved.

NOT_COMPARABLE_TO_BASE: The targeted updateCachedRemoteStatus tracer span is not reached by the base full-cache writers. These are four head scheduler captures, with acknowledged trigger and completed local refresh, against the matrix oracle.
Declared oracle: All four return B/null and zero counts from consistent latest cache; prove trigger reached and local refresh finished. Base full-cache writers do not end the targeted updateCachedRemoteStatus span, so this exact tracer trigger does not exist there. Timeouts are not before evidence.
HEAD OBSERVATIONS (no fabricated base):
{
  "observers": [
    {
      "events": [
        {
          "_tag": "snapshot",
          "local": {
            "branchChanges": {
              "baseRef": "origin/main",
              "deletions": 0,
              "insertions": 1
            },
            "hasPrimaryRemote": true,
            "hasWorkingTreeChanges": false,
            "isDefaultRef": true,
            "isRepo": true,
            "refName": "A",
            "workingTree": {
              "deletions": 0,
              "files": [],
              "insertions": 0
            }
          },
          "remote": null
        },
        {
          "_tag": "remoteUpdated",
          "remote": {
            "aheadCount": 0,
            "aheadOfDefaultCount": 1,
            "behindCount": 0,
            "hasUpstream": true,
            "pr": {
              "baseRef": "main",
              "headRef": "A",
              "number": 613,
              "state": "open",
              "title": "Fixture A",
              "url": "https://github.com/proof-audit/status-fixture/pull/613"
            }
          }
        },
        {
          "_tag": "remoteUpdated",
          "remote": null
        },
        {
          "_tag": "localUpdated",
          "local": {
            "branchChanges": {
              "baseRef": "origin/main",
              "deletions": 0,
              "insertions": 1
            },
            "hasPrimaryRemote": true,
            "hasWorkingTreeChanges": false,
            "isDefaultRef": false,
            "isRepo": true,
            "refName": "B",
            "workingTree": {
              "deletions": 0,
              "files": [],
              "insertions": 0
            }
          }
        }
      ],
      "observer": "P18-autoPull/P18-autoPull/passive-1"
    },
    {
      "events": [
        {
          "_tag": "snapshot",
          "local": {
            "branchChanges": {
              "baseRef": "origin/main",
              "deletions": 0,
              "insertions": 1
            },
            "hasPrimaryRemote": true,
            "hasWorkingTreeChanges": false,
            "isDefaultRef": false,
            "isRepo": true,
            "refName": "B",
            "workingTree": {
              "deletions": 0,
              "files": [],
              "insertions": 0
            }
          },
          "remote": null
        }
      ],
      "observer": "P18-autoPull/P18-autoPull/reconnect/response-reread"
    },
    {
      "events": [
        {
          "_tag": "snapshot",
          "local": {
            "branchChanges": {
              "baseRef": "origin/main",
              "deletions": 0,
              "insertions": 1
            },
            "hasPrimaryRemote": true,
            "hasWorkingTreeChanges": false,
            "isDefaultRef": true,
            "isRepo": true,
            "refName": "A",
            "workingTree": {
              "deletions": 0,
              "files": [],
              "insertions": 0
            }
          },
          "remote": null
        },
        {
          "_tag": "remoteUpdated",
          "remote": {
            "aheadCount": 0,
            "aheadOfDefaultCount": 1,
            "behindCount": 2,
            "hasUpstream": true,
            "pr": {
              "baseRef": "main",
              "headRef": "A",
              "number": 613,
              "state": "open",
              "title": "Fixture A",
              "url": "https://github.com/proof-audit/status-fixture/pull/613"
            }
          }
        },
        {
          "_tag": "remoteUpdated",
          "remote": null
        },
        {
          "_tag": "localUpdated",
          "local": {
            "branchChanges": {
              "baseRef": "origin/main",
              "deletions": 0,
              "insertions": 1
            },
            "hasPrimaryRemote": true,
            "hasWorkingTreeChanges": false,
            "isDefaultRef": false,
            "isRepo": true,
            "refName": "B",
            "workingTree": {
              "deletions": 0,
              "files": [],
              "insertions": 0
            }
          }
        }
      ],
      "observer": "P18-autoPullFailure/P18-autoPullFailure/passive-1"
    },
    {
      "events": [
        {
          "_tag": "snapshot",
          "local": {
            "branchChanges": {
              "baseRef": "origin/main",
              "deletions": 0,
              "insertions": 1
            },
            "hasPrimaryRemote": true,
            "hasWorkingTreeChanges": false,
            "isDefaultRef": false,
            "isRepo": true,
            "refName": "B",
            "workingTree": {
              "deletions": 0,
              "files": [],
              "insertions": 0
            }
          },
          "remote": null
        }
      ],
      "observer": "P18-autoPullFailure/P18-autoPullFailure/reconnect/response-reread"
    },
    {
      "events": [
        {
          "_tag": "snapshot",
          "local": {
            "branchChanges": {
              "baseRef": "origin/main",
              "deletions": 0,
              "insertions": 1
            },
            "hasPrimaryRemote": true,
            "hasWorkingTreeChanges": false,
            "isDefaultRef": false,
            "isRepo": true,
            "refName": "A",
            "workingTree": {
              "deletions": 0,
              "files": [],
              "insertions": 0
            }
          },
          "remote": null
        },
        {
          "_tag": "remoteUpdated",
          "remote": null
        },
        {
          "_tag": "localUpdated",
          "local": {
            "branchChanges": {
              "baseRef": "origin/main",
              "deletions": 0,
              "insertions": 1
            },
            "hasPrimaryRemote": true,
            "hasWorkingTreeChanges": false,
            "isDefaultRef": false,
            "isRepo": true,
            "refName": "B",
            "workingTree": {
              "deletions": 0,
              "files": [],
              "insertions": 0
            }
          }
        }
      ],
      "observer": "P18-getStatus/P18-getStatus/passive-1"
    },
    {
      "events": [
        {
          "_tag": "snapshot",
          "local": {
            "branchChanges": {
              "baseRef": "origin/main",
              "deletions": 0,
              "insertions": 1
            },
            "hasPrimaryRemote": true,
            "hasWorkingTreeChanges": false,
            "isDefaultRef": false,
            "isRepo": true,
            "refName": "B",
            "workingTree": {
              "deletions": 0,
              "files": [],
              "insertions": 0
            }
          },
          "remote": null
        }
      ],
      "observer": "P18-getStatus/P18-getStatus/reconnect/response-reread"
    },
    {
      "events": [
        {
          "_tag": "snapshot",
          "local": {
            "branchChanges": {
              "baseRef": "origin/main",
              "deletions": 0,
              "insertions": 1
            },
            "hasPrimaryRemote": true,
            "hasWorkingTreeChanges": false,
            "isDefaultRef": false,
            "isRepo": true,
            "refName": "A",
            "workingTree": {
              "deletions": 0,
              "files": [],
              "insertions": 0
            }
          },
          "remote": null
        },
        {
          "_tag": "remoteUpdated",
          "remote": {
            "aheadCount": 0,
            "aheadOfDefaultCount": 1,
            "behindCount": 0,
            "hasUpstream": true,
            "pr": {
              "baseRef": "main",
              "headRef": "A",
              "number": 613,
              "state": "open",
              "title": "Fixture A",
              "url": "https://github.com/proof-audit/status-fixture/pull/613"
            }
          }
        },
        {
          "_tag": "remoteUpdated",
          "remote": null
        },
        {
          "_tag": "localUpdated",
          "local": {
            "branchChanges": {
              "baseRef": "origin/main",
              "deletions": 0,
              "insertions": 1
            },
            "hasPrimaryRemote": true,
            "hasWorkingTreeChanges": false,
            "isDefaultRef": false,
            "isRepo": true,
            "refName": "B",
            "workingTree": {
              "deletions": 0,
              "files": [],
              "insertions": 0
            }
          }
        }
      ],
      "observer": "P18-refreshStatus/P18-refreshStatus/passive-1"
    },
    {
      "events": [
        {
          "_tag": "snapshot",
          "local": {
            "branchChanges": {
              "baseRef": "origin/main",
              "deletions": 0,
              "insertions": 1
            },
            "hasPrimaryRemote": true,
            "hasWorkingTreeChanges": false,
            "isDefaultRef": false,
            "isRepo": true,
            "refName": "B",
            "workingTree": {
              "deletions": 0,
              "files": [],
              "insertions": 0
            }
          },
          "remote": null
        }
      ],
      "observer": "P18-refreshStatus/P18-refreshStatus/reconnect/response-reread"
    }
  ]
}