G8l: endpoint-holder purge writer-authority audit

pub const S288_WRITER_BOUNDARY_SITES: usize = 1;
pub const S288_WRITER_AUTHORITY_SITES: usize = 0;
pub const S288_DIRECT_SCHEDULER_ACCESS_SITES: usize = S287_DIRECT_SCHEDULER_ACCESS_SITES;
pub const S288_IMMUTABLE_READ_SITES: usize = S287_IMMUTABLE_READ_SITES;
pub const S288_WHOLE_SCHEDULER_GUARDED_SITES: usize = S287_WHOLE_SCHEDULER_GUARDED_SITES;
pub const S288_WHOLE_SCHEDULER_UNROUTED_SITES: usize = S287_WHOLE_SCHEDULER_UNROUTED_SITES;
pub const S288_OPEN_WRITER_SITES: usize = S287_OPEN_WRITER_SITES;

#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum G8lS288SchedulerWriterAuthorityAuditOutcome {
    Idle,
    AwaitingWriterAuthority {
        request_id: u64,
        guarded_sites: usize,
        writer_sites: usize,
    },
}

#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum G8lS288SchedulerWriterAuthorityAuditError {
    S287(G8lS287SchedulerWriterAuthorityAuditError),
    S245(G8lS245ExclusionAdmissionRequestError),
    PriorCoverageDrift {
        guarded_sites: usize,
        unrouted_sites: usize,
    },
}

/// Revalidate the prior fail-closed authority boundary without taking
/// admission or constructing a production exclusive wrapper.
pub fn preflight_s288_scheduler_writer_authority(
    caller_cpu: usize,
    request: Option<G8lS245WholeSchedulerExclusionAdmissionRequestView>,
) -> Result<G8lS288SchedulerWriterAuthorityAuditOutcome, G8lS288SchedulerWriterAuthorityAuditError>
{
    match preflight_s287_scheduler_writer_authority(caller_cpu, request)
        .map_err(G8lS288SchedulerWriterAuthorityAuditError::S287)?
    {
        G8lS287SchedulerWriterAuthorityAuditOutcome::Idle => {
            Ok(G8lS288SchedulerWriterAuthorityAuditOutcome::Idle)
        }
        G8lS287SchedulerWriterAuthorityAuditOutcome::AwaitingWriterAuthority {
            request_id,
            guarded_sites,
            writer_sites,
        } if guarded_sites == S288_WHOLE_SCHEDULER_GUARDED_SITES
            && writer_sites == S288_OPEN_WRITER_SITES =>
        {
            Ok(
                G8lS288SchedulerWriterAuthorityAuditOutcome::AwaitingWriterAuthority {
                    request_id,
                    guarded_sites,
                    writer_sites,
                },
            )
        }
        G8lS287SchedulerWriterAuthorityAuditOutcome::AwaitingWriterAuthority {
            guarded_sites,
            writer_sites: _,
            ..
        } => Err(
            G8lS288SchedulerWriterAuthorityAuditError::PriorCoverageDrift {
                guarded_sites,
                unrouted_sites: S288_DIRECT_SCHEDULER_ACCESS_SITES - guarded_sites,
            },
        ),
    }
}

#[test]
fn s288_keeps_endpoint_holder_purge_writer_open_until_exclusive_authority_exists() {
    assert_eq!(S288_WRITER_BOUNDARY_SITES, 1);
    assert_eq!(S288_WRITER_AUTHORITY_SITES, 0);
    assert_eq!(S288_DIRECT_SCHEDULER_ACCESS_SITES, 113);
    assert_eq!(S288_IMMUTABLE_READ_SITES, 44);
    assert_eq!(S288_WHOLE_SCHEDULER_GUARDED_SITES, 44);
    assert_eq!(S288_WHOLE_SCHEDULER_UNROUTED_SITES, 69);
    assert_eq!(S288_OPEN_WRITER_SITES, 69);
}

  {
    id: "g8l-s288-endpoint-holder-purge-writer-authority-audit-partial",
    date: "2026-08-26",
    sequence: 288,
    status: "passed",
    umbrella_status: "partial",
    title: "G8l: endpoint-holder purge writer-authority audit",
    summary:
      "S288 focused 15/15 PASS ile teardown_endpoint_object_under_ipc_transaction helper'ındaki ilk explicit scheduler writer erişimini, exact endpoint-holder purge sınırını kaynakta doğrular. Writer authority yalnız model gate'inin exclusive lease'iyle mümkündür; reader lease'i writer'ı açmaz. Production inventory 113 direct / 44 immutable guarded / 69 open writer'dır; helper'ın iki wake writer'ı ayrıca açık kalır ve production exclusive wrapper, provider authority, whole-scheduler exclusion veya scheduler mutation üretilmez.",
    evidence: [
      "S288 focused kaynak/model kapısı iki bağımsız koşuda 15/15 PASS verdi: 130 B / SHA-256 0447f2fe9dc6fdf30815a6962cf23d978425e51bef2acde1efb27e5da13a78b3.",
      "teardown_endpoint_object_under_ipc_transaction içindeki üç addr_of_mut!(crate::task::scheduler::SCHEDULER) writer'dan yalnız purge_endpoint_holders_exact sınırı audit edilir. Immutable holder preflight, endpoint registry removal linearization, exact owner equality, tek holder purge, exact preflight equality ve provenance revoke sırası kaynakta görünür; takip eden iki wake_tasks_on_revoked_endpoint writer'ı ayrıca açık kalır.",
      "Model gate reader membership exclusive writer authority'yi ExclusiveBusy ile bloklar; reader bırakıldıktan sonra non-zero token'lı exclusive lease alınır. Bu host/model evidence'tır.",
      "S287 authority preflight yeniden doğrulanır; pending S245 request korunur ve sonuç AwaitingWriterAuthority { guarded_sites: 44, writer_sites: 69 } olarak döner.",
      "Dört AArch64 profil derlemesi iki koşuda byte-equal exit 0 verdi: QEMU 110646 B / 96692bca, RPi4 149371 B / df3e2018, RPi5 390056 B / 6c533459 ve RPi5+SMP 389998 B / f6ec6ac3. Warning header'ları sırasıyla 291, 389, 785 ve 785'tir; zero-warning iddiası değildir.",
      "Birleşik board-rpi5,board-qemu özellikleri iki koşuda beklenen exit 101, 18590 B / ad3ca52d, 17 error ve 22 warning header ile fail-closed kaldı; S288 writer boundary'si iki board profilinin birlikte etkinleşmesini açmaz.",
      "S238–S288 dependency matrisi iki koşuda 52 grup / 704/704 PASS; ham loglar 6682 B / 0f1a61fa ve b603d9b9, süre-normalize özet 6786 B byte-equal / 941aa9016717001dc9ee58d4ec73cd7e0df924c9c6f90dc28e4587076ce1821b. Bu production writer-authority invocation kanıtı değildir.",
      "Ortak make verify-qemu iki koşuda PASS verdi: 116222 B / caecacc8 ve 116139 B / fca5c610; W^X 31/31, S271 GRAPH_ABSENT=YES, RuntimePmm baseline, EL0 x4096, IPC 20/20, tek beklenen S142 fatal containment ve SEC5 korunur. Bu ortak smoke S288 production writer invocation kanıtı değildir.",
      "Exact yedi tarihsel G8h assertion adlarıyla dışlandığında workspace iki koşuda 250 sonuç grubu / 2482 PASS / 7 filtered verdi: ham loglar 59961 B, süre-normalize 24131 B özet byte-equal / SHA-256 6299ec1d5ce31b6df610d581a953c2059452856e75fb056a2737109b0c34342e. Filtresiz koşu exit 101, 55183 B / 31088b75 ile frozen S96 exceptions.S identity kapısında RED kaldı; full-workspace GREEN iddia edilmez.",
      "S288 production exclusive wrapper, provider authority, whole-scheduler exclusion, QEMU runtime fixture veya scheduler mutation iddiası eklemez; physical/device operations=0 ve RUNBOOK_EXECUTED_IN_S288=NO.",
    ],
    commands: [
      "cargo test --quiet -p aselsan_microkernel_simulation --test g8l_target_dispatch_scheduler_owner_scheduler_mutation_production_migration_lifecycle_s288_endpoint_holder_purge_writer_authority_audit -- --test-threads=1",
      "cargo check --quiet -p aselsan_kernel --target aarch64-unknown-none --no-default-features --features board-qemu",
      "cargo check --quiet -p aselsan_kernel --target aarch64-unknown-none --no-default-features --features board-rpi4",
      "cargo check --quiet -p aselsan_kernel --target aarch64-unknown-none --no-default-features --features board-rpi5",
      "cargo check --quiet -p aselsan_kernel --target aarch64-unknown-none --no-default-features --features board-rpi5,smp",
      "cargo check --quiet -p aselsan_kernel --target aarch64-unknown-none --no-default-features --features board-rpi5,board-qemu",
      "make verify-qemu",
    ],
    terminalSessions: [
      {
        id: "g8l-s288-endpoint-holder-purge-writer-authority-audit",
        title: "G8l S288 endpoint-holder purge writer-authority audit",
        commandLines: [
          "cargo test --quiet -p aselsan_microkernel_simulation --test g8l_target_dispatch_scheduler_owner_scheduler_mutation_production_migration_lifecycle_s288_endpoint_holder_purge_writer_authority_audit -- --test-threads=1",
        ],
        outputLines: [
          "test result: ok; S288 focused 1 group / 15 passed; 0 failed",
          "repeat-stable quiet output: 130 B / 0447f2fe9dc6fdf30815a6962cf23d978425e51bef2acde1efb27e5da13a78b3",
          "endpoint-holder purge writer authority remains model-only: reader blocks exclusive lease; two helper wake writers and 69 production writer sites remain open",
          "dependency: S238–S288 · 52 groups · 704/704 PASS; workspace: 250 groups · 2482 PASS · 7 historical filtered",
        ],
        exitCode: 0,
        outputMode: "selected",
      },
    ],
    terminalSessionsNote:
      "S288 kaynak/model fail-closed authority boundary'sidir; production writer guard, helper wake-writer migration, QEMU fixture mutation ve fiziksel/device execution claim edilmez.",
    limitations: [
      "S288 yalnız teardown_endpoint_object_under_ipc_transaction içindeki endpoint-holder purge writer sınırını audit eder; helper'ın iki wake writer'ı ve toplam 69 production writer site açık kalır.",
      "Exclusive lease yalnız host/model gate'inde test edilir; production exclusive wrapper, provider authority ve whole-scheduler exclusion açık kalır.",
      "S238–S288 dependency matrisi exact 52 grup / 704/704 PASS'tir; bu production writer authority invocation kanıtı değildir.",
      "Filtresiz workspace frozen S96 identity kapısında RED'dir; workspace umbrella GREEN iddia edilmez.",
      "Supported-profile runtime invocation, Generic SMP ve fiziksel RPi kabulü açık kalır; S288 physical/device operations=0 ve RUNBOOK_EXECUTED_IN_S288=NO.",
    ],
  },