[ac-pplx]

Summary

pplx-space-sandbox-portability still rendered SET lists for sandboxes and for its executions and port exposures. The data-store rules forbid that: a statement stays whole at its query site, and only a whole portability boolean predicate may be interpolated. For example, repair::revert_failed_to_suspended built SET {sandbox_assignments}, restore_lease_expires_at = NULL, ..., so the text Postgres received could not be read at the query site.

Merging this:

• Writes each such statement out in full at its query site:
  • sandbox-store: drain, ingest, orphan, pod_tracking, repair, suspend;
  • cluster controller: pod-less drain give-up, started repair and failed-restorable repair stores.
• Builds a statement once in a LazyLock<String> where its only interpolations are portability predicates, or the constant repair row-state guards.
• Splits pod_tracking's started recovery into two whole statements, one per proof shape.
• Leaves the orphan and repair guard fragments interpolated; the reconciler's scans compose the same fragments.
• Deletes the renderers and the types only they used: clear_/write_/publish_clear_or_preserve_current_local_artifact_marker_assignments, suspended_/quarantined_k8s_finalization_sql, SuspendedK8sFinalizationSql, SuspendedTargetNodeAssignment and the execution and port-exposure assignment helpers.
• Changes drain::revert_pod_less_resident_to_suspended to return bool instead of the renderer.
• Updates the doc comments that named deleted functions, including node_local_backup_pending.rs. Deletes the sandbox_writes ratchet's two renderer-call patterns, which match nothing once the renderers are gone, and the comment text about renderers in ARCHITECTURE.toml and architecture-baseline.toml. The statement-head pattern is unchanged and the deleted patterns matched nothing, so no baseline cap changes.

Changed test expectations: none.

Validation

• Byte-identity: I ran the touched crates and their callers against a Postgres with log_statement=all, once on origin/main and once on this head, and compared the statements by sql! module path with the locator line number removed. A temporary test, not committed, ran the two OrphanGuard::LegacyDeleting statements, which no existing test reaches. It compared 18 statement texts and all 18 match exactly:

  • drain pod-less revert (1);
  • ingest::finalize_suspended (1);
  • orphan recover and quarantine, each for PodName, Forgotten and LegacyDeleting (6);
  • pod_tracking ExecutionRetired and FailedRecovery (2);
  • repair started and failed (2);
  • suspend committed-artifact and missing-pod (2);
  • port-exposure reset in both repair stores (2);
  • give-up execution retire and port-exposure reset (2).

  The nine touched modules issued the same 59 distinct statements on both sides. Across the whole log (96,614 statements on the base, 96,647 on the head, 8,042 distinct on each), the only differences were run-generated UUIDs, test database names, prepared-statement names and timestamps.

• Mutation: changing ingest's target_node_id = COALESCE(s.target_node_id, s.active_node_id) to s.target_node_id fails published_state_tests::lifecycle_writers::{ready_backup_projects_suspended_only_out_of_running_and_restoring_lifecycles, suspended_report_projects_only_out_of_running_and_restoring_lifecycles}.

• cargo fmt --all -- --check, scripts/check-rust-error-policy.sh and cargo clippy --workspace --locked --all-targets --all-features -- -D warnings pass. cargo arch reports no findings, also with --base-baseline, --renames and --base-architecture from origin/main.

• SPACE_CI_REQUIRE_TEST_DEPS=1 cargo nextest run --all-features on sandbox-store, sandbox-portability, cluster-controller-server, internal-api-server, api, snapshot-store and snapshot-retention: 4025 passed against a real Postgres, 0 dependency skips. The one skipped test is the ignored opt-in benchmark.

• Kind: a fresh cluster from an earlier revision with the same patch (infra/space/kind/scripts/up.sh, otel telemetry) came up in 514 s. scripts/tests/smoke-kind-typed.sh all, with CI's admin-token and cold-receipt setup, took 4031 s. The native surface passed 42/42. The ECW surface passed 90/91: ecw.guest_mptcp_segments_dropped hit an infrastructure error at sandbox create (guest command readiness timed out, node-mgr probe Unavailable) and passed when rerun once. Six console-UI scenarios were skipped because Playwright/Chromium isn't installed.

• At this head, rebased onto main with the patch unchanged (sorted +/- lines identical): fmt, ci/scripts/run-archcheck.sh (no findings) and workspace clippy -D warnings pass. SPACE_CI_REQUIRE_TEST_DEPS=1 cargo nextest run --all-features on cluster-controller-server, internal-api-server, sandbox-portability and sandbox-store: 1750 passed, 0 skipped. ci/scripts/check-test-durations.py passes, and no test this PR touches takes over 2 s.

Severity and risk

Severity: does not apply; this is a structural cleanup with no behaviour change.

Risk: low. The SQL text is unchanged, so the only risk is in the Rust control flow around it, mainly bool replacing Option<SuspendedK8sFinalizationSql> in the pod-less give-up. Roll back by reverting the commit.

Mixed versions: there is no schema or wire change. Old and new binaries send the same statements, apart from sql! locator comments.

Not covered

The orphan statements (orphan::recover_orphan_to_suspended and orphan::quarantine_orphan) still interpolate the classification guard's FROM items (joined to the active execution for the pod-name guard), its predicate and its FOR UPDATE OF targets, which the reconciler's plan read composes too. quarantine_orphan also picks its artifact predicate per call (TRUE for a legacy deleting row, otherwise the negated restart eligibility). Because the guard varies per call, both statements are still built with format! on every call. Writing them as one whole statement per guard is a separate change. The repair row-state guards stay interpolated as the existing fragments docs/rust/space-conventions.md describes.

AI assistance: Claude Code drafted the code changes, the byte-identity harness and this description.

[ac-pplx]

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Walkthrough

The PR removes sandbox-portability SQL renderers and constructs finalization and recovery statements directly in sandbox-store and repair or drain call sites. It updates the pod-less revert function to return whether a row changed, and updates its caller to handle that result. The sandbox_writes ratchet now matches SQL write statements against sandboxes without counting assignment-renderer calls.

Possibly related PRs

• perplexityai/SPACE#1406: Removes the same sandbox-portability SQL renderers and updates the related query sites and architecture ratchets.
• perplexityai/SPACE#1360: Changes pattern-ratchet comparison behavior for sandbox_writes, which this PR also updates.

Merge Risk: Minimal · up to ec736

This refactors how sandbox finalization and recovery SQL is built and is reported to produce identical statements, so no user-visible behavior change is expected. No concrete defects were found. One commit message marks the PR as preview-only and not to be merged, so confirm that is intended before merging.

Security architecture risk: Low · up to ec736

The reviewed recovery paths preserve identity checks, state-transition guards and transactional cleanup. No new attack path was identified. The internal contract change touches sensitive persistent state, and broader authorization and deployment behavior were not independently verified.

Retained concerns
No architecture-level concerns identified.

Security review details

Security Blast Radius

• observed — The inspected mutations affect a selected sandbox or a batch of node-assigned candidates and their associated execution, exposure and reservation rows. Publication candidate selection binds the reporting node, requires the sandbox’s active-node assignment to match, and locks selected sandbox rows. This establishes a placement-scoped control, not a complete assessment of tenant authorization.

Trust Boundaries and Controls

• observed — The reviewed cached queries interpolate repository-defined predicates and constant guard expressions, while runtime identities and values remain bound parameters. Ingest still requires an exact published execution-identity match before accepting a published artifact. Moving statement construction does not introduce an evidenced path from reported values into SQL structure.

Resilience and Maintainability Implications

• observed — The inspected controller paths preserve failure containment. Drain rechecks eligibility and generation under node, sandbox and execution locks, then commits only after execution retirement, reservation deletion, exposure reset and fossil-state cleanup. Repair callers likewise roll back refused transitions and complete required cleanup before commit. Errors propagate before those commit points.

Pre-merge checks: 4 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Title check		The title accurately describes the SQL rewrite and renderer removal, but it has two prefixes. It starts with [cr-test] instead of the touched area prefix sandbox-store: or a single bracketed area.	Remove [cr-test] and use a single valid prefix, for example: sandbox-store: write the portability assignment renderers' statements whole and delete the renderers.

Passed checks: 4 passed

Check name	Status	Explanation
Description Follows The Pr Template		The description contains all required items: a substantive ## Summary, a ## Validation section with commands and results, a ## Severity and risk section with severity and risk, and an `AI assist…
Bug Fixes Name A Regression Test		PASS. The diff is a structural SQL-renderer removal and statement rewrite. It does not introduce an application behavior fix; the changed files contain no test changes. The validation section also nam…
Weakened Safeguards Are Justified		The diff changes no test files, test assertions, lint settings, CI steps, or known-failure/allowlist entries. It removes two obsolete renderer-call patterns from ARCHITECTURE.toml; the PR descriptio…
Public-Safe Content		No public-safety violation found. The title, description, and diff contain no credentials, tokens, private keys, private links, internal hostnames, cloud IDs, personal absolute paths, production logs,…

Full details: Description Follows The Pr Template

Explanation

The description contains all required items: a substantive ## Summary, a ## Validation section with commands and results, a ## Severity and risk section with severity and risk, and an AI assistance: line stating that Claude Code drafted the code changes, byte-identity harness, and description.

Full details: Bug Fixes Name A Regression Test

Explanation

PASS. The diff is a structural SQL-renderer removal and statement rewrite. It does not introduce an application behavior fix; the changed files contain no test changes. The validation section also names existing lifecycle tests that fail under a targeted mutation and reports the unmutated test suites passing.

Full details: Weakened Safeguards Are Justified

Explanation

The diff changes no test files, test assertions, lint settings, CI steps, or known-failure/allowlist entries. It removes two obsolete renderer-call patterns from ARCHITECTURE.toml; the PR description gives a specific reason: the renderers were deleted and the patterns matched nothing after that change. architecture-baseline.toml changes only the related comment.

Full details: Public-Safe Content

Explanation

No public-safety violation found. The title, description, and diff contain no credentials, tokens, private keys, private links, internal hostnames, cloud IDs, personal absolute paths, production logs, or incident details. The reported Postgres and Kind validation results are test results, not production data.

Recent review info

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Failed pre-merge checks:
- Title check:
Remove `[cr-test]` and use a single valid prefix, for example: `sandbox-store:
write the portability assignment renderers' statements whole and delete the
renderers`.

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• Source mode: Auto
• Repository: perplexityai/SPACE
• Branch: cr-test/1406-v3-head
• File: .coderabbit.yaml
• Commit: ec736bc
• Layers: Repository YAML; Enforced overrides: Organization
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• Run ID: 8d00e042-708b-492c-8b6f-2a089065840e

Commits

Reviewing files that changed from the base of the PR and between d0d1d9f and ec736bc.

Files selected for processing: 13

• ARCHITECTURE.toml
• architecture-baseline.toml
• crates/l30_storage/sandbox/portability/src/lib.rs
• crates/l30_storage/sandbox/store/src/drain.rs
• crates/l30_storage/sandbox/store/src/ingest.rs
• crates/l30_storage/sandbox/store/src/orphan.rs
• crates/l30_storage/sandbox/store/src/pod_tracking.rs
• crates/l30_storage/sandbox/store/src/repair.rs
• crates/l30_storage/sandbox/store/src/suspend.rs
• crates/l40_api/cluster/controller/server/src/failed_restorable_repair/store.rs
• crates/l40_api/cluster/controller/server/src/node_drain/store/pod_less_giveup.rs
• crates/l40_api/cluster/controller/server/src/started_sandbox_repair/store.rs
• crates/l40_api/internal/api/server/src/node_local_backup_pending.rs

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[ac-pplx]

Closing: CodeRabbit configuration test finished; the tested configuration is in #1464.