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fix(wallet): safe upgrade backups with time-based retention and guarded file deletion - #994
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- WalletDataIncompatible no longer tells users to remove local wallet data; it asks them to write down recovery phrases and imported keys, move only the .sqlite files aside and keep the secrets folder, whose imported and masternode keys no recovery phrase can restore. - The compatibility bridge backs up only after the staged copy validates, right before the rebuild, and keeps at most one backup per database. - Deterministic upgrade failures are terminal storage-open errors, so they surface instead of being silently retried; busy, disk-full and I/O failures stay retryable. - Removing a wallet or identity, or clearing a network's data, deletes the upgrade backups of det-app.sqlite and the network wallet database. - Upgrade and funding-persist errors name their actual cause (another instance, full disk, or neither) without disk-space or "account" jargon where it does not apply; the two identity-roster variants share one message. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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📝 WalkthroughWalkthroughThe change classifies storage and persistence failures, coordinates upgrade-backup creation and retention, and removes backups during wallet, identity, and network-data cleanup. It also updates recovery guidance and cleanup messages. ChangesUpgrade lifecycle
Priority: ⬆️ High Estimated code review effort: 4 (Complex) | ~45 minutes Change: Bug fix Sequence Diagram(s)sequenceDiagram
participant platform_compatibility
participant upgrade_locked
participant target_validation
participant backup_with_hook_locked
participant Filesystem
platform_compatibility->>upgrade_locked: acquire BackupGuard
upgrade_locked->>target_validation: validate target
target_validation-->>upgrade_locked: validated target
upgrade_locked->>backup_with_hook_locked: create backup
backup_with_hook_locked->>Filesystem: publish snapshot and prune older backups
Merge Risk: 🟡 Moderate · up to Permission failures during migration can still produce misleading incompatible-data recovery instructions, and backups under symlinked directories may exceed the one-snapshot limit. Resolve these issues before merging. Security Architecture ReviewSecurity architecture risk: 🟡 Moderate · up to Backup publication and cleanup now coordinate recovery with data deletion. The change includes safeguards, but a platform-specific file-alias gap and an unverified backup-ownership assumption leave some recovery risk. Retained concerns
Security review detailsSecurity Blast Radius
Security Findings and Attack Paths
Trust Boundaries and Controls
Resilience and Maintainability Implications
Hardening Proposals
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 69.03% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 113 functions across 12 files. (2 skipped: 2 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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⛔ Final review complete — 1 blocking finding(s) (commit 681ddac) · triage: critical |
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Inline comments:
In `@src/wallet_backend/platform_compatibility/mod.rs`:
- Around line 13-15: Update the platform compatibility open flow used by
WalletBackend::new so a terminal SqlitePersister::open or migration failure is
memoized per database, preventing later callers from retrying and creating
additional pre-migration backups. Preserve successful backend storage through
ensure_wallet_backend and distinguish terminal failures from retryable opens.
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CHANGELOG.mddocs/ai-design/2026-09-10-platform-pin/upgrade-notes.mdsrc/backend_task/error.rssrc/backend_task/identity/remove_identity.rssrc/backend_task/mod.rssrc/context/identity_db.rssrc/context/wallet_lifecycle/removal.rssrc/context/wallet_lifecycle/spv.rssrc/context/wallet_lifecycle/tests.rssrc/wallet_backend/identity_ops.rssrc/wallet_backend/platform_compatibility/engine.rssrc/wallet_backend/platform_compatibility/engine/tests.rssrc/wallet_backend/platform_compatibility/mod.rs
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Final validation — Phase 2 only (queue backlog)
The compatibility bridge improves validation and recovery safety, but several failure paths still undermine the PR’s stated backup-retention and deletion guarantees. In particular, recovery guidance can omit committed SQLite WAL data, identity deletion can succeed while retaining sensitive upgrade backups, and upstream or failed-prune backups can accumulate beyond the advertised bound.
🔴 2 blocking | 🟡 3 suggestion(s)
Review provenance
Source: reviewer 1: gpt-6-astra (agent: phase2-reviewer, role: general); reviewer 2: gpt-6-astra (agent: phase2-reviewer, role: rust-quality); final verifier: gpt-6-astra (agent: astra-verifier, role: final-verifier)
- Triage:
criticalbygpt-6-astra(effort low) — The substantial diff changes wallet/platform storage migration behavior, including destructive database rebuilds, backup retention and deletion, and handling of persistent wallet data containing keys, making it an intricate change to a critical storage and key-handling surface. - Phase 1 reviewers: not run (skipped for throughput: 31 PRs queued, above the 10 limit)
- Fresh verifier:
gpt-6-astra— final-verifier; agentastra-verifier - Phase 2 reviewers:
gpt-6-astra— general (completed, effort xhigh); agentphase2-reviewer,gpt-6-astra— rust-quality (completed, effort xhigh); agentphase2-reviewer
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `src/backend_task/error.rs`:
- [BLOCKING] src/backend_task/error.rs:491-493: Recovery guidance can leave committed SQLite WAL data behind
The recovery instructions tell users to move only files ending in `.sqlite`. SQLite WAL mode can keep committed changes in sibling `-wal` and `-shm` files. If those sidecars exist when the user follows these instructions, moving only the main database leaves the WAL data in the original directory, and the rebuilt application can appear to lose wallet or identity state. The guidance must either require closing the previous application and checkpointing the databases before moving them, or explicitly instruct users to move each database together with its `-wal` and `-shm` sidecars.
- [SUGGESTION] src/backend_task/error.rs:491-493: Recovery guidance does not distinguish imported keys from recovery phrases
The message tells users to write down “the recovery phrase of every wallet and every key you imported.” Imported private keys do not have recovery phrases and cannot be re-derived from one. A user following this wording may fail to record an imported key before moving the databases aside. Instruct users separately to record each wallet’s recovery phrase and each imported key.
In `src/context/identity_db.rs`:
- [BLOCKING] src/context/identity_db.rs:1740-1747: Identity deletion reports success when upgrade-backup cleanup fails
The durable pending-cleanup manifest is cleared by `finish_identity_removal_cleanup` before `remove_upgrade_backups()` runs. If backup deletion fails, this code only logs the error and still returns `Ok`, so the identity-removal task reports success while a backup containing the deleted identity remains on disk. Because the manifest has already been cleared, the boot-time cleanup sweep will not retry this deletion. Propagate the cleanup failure as an incomplete deletion or persist a retryable cleanup marker so retained backups cannot silently survive identity removal.
In `src/wallet_backend/platform_compatibility/mod.rs`:
- [SUGGESTION] src/wallet_backend/platform_compatibility/mod.rs:13-16: Upstream pre-migration backups are not bounded or removed
The initial `SqlitePersister::open(config.clone())` can create an upstream `backups/auto/pre-migration-*` snapshot before returning a migration error. Each retry after a deterministic compatibility failure can create another full snapshot, while `remove_backups` only scans DET files matching `.platform-67d4ef3-backup-*.sqlite`. Successful upgrades also leave these upstream snapshots behind. This defeats the PR’s stated at-most-one-backup and deletion guarantees and can grow storage across retries and restarts. Bound or clean up the upstream backup directory, or memoize terminal failures so repeated opens do not create additional snapshots.
In `src/wallet_backend/platform_compatibility/engine.rs`:
- [SUGGESTION] src/wallet_backend/platform_compatibility/engine.rs:279-284: Failed pruning can leave multiple retained upgrade backups
The new backup is kept before older backups are removed, but failures from `remove_file` are only logged. If an older backup is open or otherwise cannot be unlinked, the upgrade still succeeds with both the old and new backups present. Subsequent opens bypass this compatibility bridge after conversion, so pruning is not retried and the implementation does not enforce the advertised one-backup-per-database bound. Surface the pruning failure or persist cleanup state for a later retry.
Keep upstream migration snapshots bounded, validate backup candidates, and preserve pending identity cleanup until backup removal succeeds. Clarify private-key recovery and SQLite sidecar handling. Co-Authored-By: Codex <noreply@openai.com> <sub>🤖 Co-authored by [Claudius the Magnificent](https://github.com/lklimek/claudius) AI Agent</sub>
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Re-review — Final validation — Phase 2 only (queue backlog)
The PR fixes the previously identified recovery-guidance, retention, upstream-backup, and cleanup-reporting issues. Three in-scope reliability gaps remain: crash-left .pending snapshots bypass cleanup, wallet removal skips backup deletion when the backend is unavailable, and storage-error retry classification is incomplete and overly broad.
🔴 2 blocking | 🟡 1 suggestion(s)
Review provenance
Source: reviewer 1: gpt-6-astra (agent: phase2-reviewer, role: general); reviewer 2: gpt-6-astra (agent: phase2-reviewer, role: rust-quality); final verifier: gpt-6-astra (agent: astra-verifier, role: final-verifier)
- Triage:
criticalbygpt-6-astra(effort low) — This is a large, intricate diff that changes wallet storage migration and backup/deletion behavior in src/wallet_backend/platform_compatibility/engine.rs, including recovery and retention of wallet data and private-key-related secrets. - Phase 1 reviewers: not run (skipped for throughput: 13 PRs queued, above the 10 limit)
- Fresh verifier:
gpt-6-astra— final-verifier; agentastra-verifier - Phase 2 reviewers:
gpt-6-astra— general (completed, effort xhigh); agentphase2-reviewer,gpt-6-astra— rust-quality (completed, effort xhigh); agentphase2-reviewer
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These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `src/wallet_backend/platform_compatibility/engine.rs`:
- [BLOCKING] src/wallet_backend/platform_compatibility/engine.rs:355-381: Crash-left .pending snapshots bypass retention and deletion
The backup flow writes a complete verified copy to a `.pending` file before publishing it as `.sqlite`. If the process terminates after the copy is written but before `persist_noclobber` runs, the `NamedTempFile` destructor does not get a chance to remove the file. On the next startup, `backups_in` recognizes only published `.sqlite` bridge backups and upstream `.db` backups, so the stale `.pending` snapshot is ignored by both `retain_one_backup` and `remove_backups`. Removing a wallet, identity, or network can therefore leave the full pre-upgrade database behind indefinitely, violating the PR's at-most-one-backup and deletion-cleanup guarantees across a crash. Include crash-left pending snapshots in startup retention and deletion handling, or otherwise clean them up safely after validating that they are backup artifacts.
- [SUGGESTION] src/wallet_backend/platform_compatibility/engine.rs:53-79: Compatibility retry classification loses SQLite transient error categories
`From<rusqlite::Error>` marks only `DatabaseBusy`, `DatabaseLocked`, and `DiskFull` as retryable. SQLite's `SystemIoFailure` and `OutOfMemory` errors are also transient environmental failures in the upstream storage classification, but they become `UpgradeError::Sqlite` and are treated as terminal by `is_terminal_storage_open_error()`. In the opposite direction, every non-`StorageFull` `std::io::Error` becomes `UpgradeError::Io`, and every `Io` error is considered retryable, including deterministic permission and invalid-input failures. Classify SQLite and OS errors by their actual retry semantics, with explicit retryable storage categories and cause-appropriate user-facing messages.
In `src/context/wallet_lifecycle/removal.rs`:
- [BLOCKING] src/context/wallet_lifecycle/removal.rs:52-89: Wallet removal skips upgrade-backup deletion when the backend is unwired
The new `remove_upgrade_backups()` call is inside `if let Ok(backend) = self.wallet_backend()`. When the backend is unavailable, the wallet is still removed from the in-memory map and the method returns `Ok(())`, but the matching DET and upstream upgrade snapshots are never deleted and no warning is shown. `remove_upgrade_backups()` itself performs filesystem cleanup and does not require the backend, so this placement leaves recoverable wallet history behind during pre-wire or already-shutdown removal. Run independent backup cleanup outside the backend-dependent block; keep only secret-state and upstream-row cleanup conditional on the backend.
Remove pending upgrade snapshots during retention and deletion without pruning an active backup or replacing a published recovery copy. Clean backups when removing a wallet even if its backend is unavailable. Preserve transient storage and memory failures while surfacing deterministic access errors. Co-Authored-By: Codex <noreply@openai.com> <sub>🤖 Co-authored by [Claudius the Magnificent](https://github.com/lklimek/claudius) AI Agent</sub>
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Re-review — Final validation — Phase 2 only (queue backlog)
All eight prior findings are addressed at the reviewed head. Two in-scope issues remain: retention can delete another process's active snapshot, and transient failures during staged storage validation are treated as terminal compatibility failures. These conclusions are based on source inspection; the reported reviewer probes were not rerun.
🔴 2 blocking
Review provenance
Source: reviewer 1: gpt-6-astra (agent: phase2-reviewer, role: general); reviewer 2: gpt-6-astra (agent: phase2-reviewer, role: rust-quality); final verifier: gpt-6-astra (agent: astra-verifier, role: final-verifier)
- Triage:
criticalbygpt-6-astra(effort low) — The intricate changes in src/wallet_backend/platform_compatibility/engine.rs directly alter storage-migration backup publication, retention, and deletion safety, with cross-cutting cleanup and retry behavior affecting recovery guarantees. - Phase 1 reviewers: not run (skipped for throughput: 21 PRs queued, above the 10 limit)
- Fresh verifier:
gpt-6-astra— final-verifier; agentastra-verifier - Phase 2 reviewers:
gpt-6-astra— general (completed, effort xhigh); agentphase2-reviewer,gpt-6-astra— rust-quality (completed, effort xhigh); agentphase2-reviewer
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `src/wallet_backend/platform_compatibility/engine.rs`:
- [BLOCKING] src/wallet_backend/platform_compatibility/engine.rs:366-371: Distinguish abandoned snapshots from actively written pending files
Retention deletes every matching `.pending` file without establishing that its writer has exited. `platform_compatibility::open()` runs this pass before opening the database, so the SQLite writer transaction held by an upgrade cannot protect its snapshot. This is reachable through concurrent CLI initialization: `init_app_context()` opens `det-app.sqlite` before opening the shared secret store. On Unix, a second initialization can therefore unlink the first process's snapshot while `backup()` is writing it; the first process then fails when publishing it with `persist_noclobber()`, aborting an otherwise valid upgrade. The filename, regular-file, and link checks establish which database the snapshot belongs to, but not whether it is abandoned. Serialize snapshot creation and cleanup with an interprocess guard, or otherwise establish writer abandonment before removing pending files. Add a regression test that runs retention while a snapshot is actively being written.
In `src/backend_task/mod.rs`:
- [BLOCKING] src/backend_task/mod.rs:237-242: Preserve retryable causes from staged storage validation
The new terminal-error branch treats every `UpgradeError::TypedValidation` as non-retryable, but that variant also wraps resource failures. In `platform_compatibility/mod.rs`, staged database creation, reopening, `load()`, and `load_unowned_identities()` wrap all upstream errors in `TypedValidation`, bypassing the cause-specific `From<rusqlite::Error>` conversion. A disk-full or temporary I/O failure at those boundaries is consequently classified as terminal. `StoragePreparationGate` uses this classifier to remove the "Try again" action, while the error message directs the user to the previous application version rather than addressing the resource problem. Preserve or inspect the concrete `WalletStorageError` and `PersistenceError` causes before classifying the failure, reserving terminal validation errors for schema, decoding, or integrity failures. Add regression cases through these wrappers, not only through the direct SQLite conversion.
Serialize snapshot creation and cleanup across processes. Classify staged validation failures from their typed causes so temporary resource errors retain retry guidance while invalid data stays terminal. Co-Authored-By: Codex <noreply@openai.com> <sub>🤖 Co-authored by [Claudius the Magnificent](https://github.com/lklimek/claudius) AI Agent</sub>
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Actionable comments posted: 2
- 🪄 Fix CodeRabbit comments on this PR
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only still-valid issues, skip the rest with a brief reason, keep changes
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Inline comments:
In `@src/backend_task/error.rs`:
- Around line 2877-2885: Add a retryable-resource cause-chain helper alongside
wallet storage error classification that detects rusqlite DiskFull,
SystemIoFailure, and OutOfMemory errors. Update the
WalletStorageError::Migration mapping after wallet_storage_error_is_in_use and
before the incompatible-data fallback to return WalletStorage for those causes,
while leaving PermissionDenied and ReadOnly mapped through the existing
AccessDenied behavior.
In `@src/wallet_backend/platform_compatibility/engine.rs`:
- Line 291: Update backups_in to record the first validate_backup_file failure
while continuing to scan and collect valid candidates. Ensure remove_backups
removes all collected valid backups before returning the recorded error,
preserving the documented “attempt every file, return the first failure”
behavior.
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CHANGELOG.mddocs/ai-design/2026-09-10-platform-pin/upgrade-notes.mdsrc/backend_task/error.rssrc/context/identity_db.rssrc/context/wallet_lifecycle/removal.rssrc/context/wallet_lifecycle/tests.rssrc/ui/identity/mod.rssrc/wallet_backend/platform_compatibility/engine.rssrc/wallet_backend/platform_compatibility/engine/tests.rssrc/wallet_backend/platform_compatibility/mod.rs
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⚠️ DEGRADED — Re-review — Preliminary review — Phase 1 blocker gate
⚠️ DEGRADED review. The primary review models were unavailable (gpt-6-astraunavailable: All credentials for model gpt-6-astra are cooling down (last error: usage_limit_reached: The usage limit has been reache), so this review ran on stand-in models:gpt-5.6-luna→muse-spark-1.3-contributor,gpt-5.6-sol→muse-spark-1.3-contributor,gpt-5.6-terra→muse-spark-1.3-contributor,gpt-6-astra→muse-spark-1.3-contributor. Both review phases and the independent verifiers still ran, but on weaker models, with Phase 1 capped athigheffort. Treat the verdict as provisional; a full-strength re-review will run on the next push once the primary models are back.
This PR hardens upgrade snapshots and recovery copy, and all ten prior findings verify as fixed. Two new gaps remain: migration opens still map transient resource exhaustion to terminal incompatible-data guidance, and a single invalid backup candidate aborts deletion of all valid snapshots.
Validated blockers were found by the Phase-1 review and confirmed by a fresh verifier. Phase 2 is deferred until a fresh same-head revalidation clears the blocker gate.
🔴 1 blocking | 🟡 1 suggestion(s)
Review provenance
Source: reviewer 1: gemini-3.8-flash-high (agent: phase1-reviewer, role: general); reviewer 2: gemini-3.8-flash-high (agent: phase1-reviewer, role: rust-quality); final verifier: muse-spark-1.3-contributor (standing in for gpt-6-astra) (agent: astra-gate-verifier, role: verifier)
- Degraded mode:
gpt-6-astraunavailable: All credentials for model gpt-6-astra are cooling down (last error: usage_limit_reached: The usage limit has been reache (detected by probe, since 2026-09-18T05:22:01Z); stand-insgpt-5.6-luna→muse-spark-1.3-contributor,gpt-5.6-sol→muse-spark-1.3-contributor,gpt-5.6-terra→muse-spark-1.3-contributor,gpt-6-astra→muse-spark-1.3-contributor; Phase 1 effort capped athigh - Triage:
criticalbymuse-spark-1.3-contributor(standing in forgpt-6-astra) (effort low) — Large (+1313/-71) change that directly modifies storage-migration behavior in src/wallet_backend/platform_compatibility/engine.rs (staged conversion validation, upgrade backup retention/pruning, and recovery guidance). - Phase 1 reviewers:
gemini-3.8-flash-high— general (completed, effort high); agentphase1-reviewer,gemini-3.8-flash-high— rust-quality (completed, effort high); agentphase1-reviewer - Phase 1 model:
gemini-3.8-flash-high— antigravity quota: weekly 100% left, 5h 100% left - Fresh verifier:
muse-spark-1.3-contributor(standing in forgpt-6-astra) — verifier; agentastra-gate-verifier - Phase 2 reviewers: not run (deferred by blocker gate)
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `src/backend_task/error.rs`:
- [BLOCKING] src/backend_task/error.rs:2877-2884: Classify recoverable migration errors as retryable storage failures
from_wallet_storage_open_error routes every WalletStorageError::Migration not matched by wallet_storage_error_is_in_use (Busy/Locked only) to WalletDataIncompatible. Refinery migrations can fail with transient rusqlite causes such as DiskFull, SystemIoFailure, or OutOfMemory, which validation_error already treats as retryable. Mapping them to WalletDataIncompatible shows alarming evacuate-the-database guidance and, because is_terminal_storage_open_error marks WalletDataIncompatible terminal, halts the cold-boot retry bridge even after disk space is freed. Inspect the migration source chain for those SQLite codes and map them to WalletStorage, as validation_error does.
In `src/wallet_backend/platform_compatibility/engine.rs`:
- [SUGGESTION] src/wallet_backend/platform_compatibility/engine.rs:290-293: Scanning backup candidates aborts before removing valid snapshots
backups_in calls validate_backup_file(&entry.path(), path)? eagerly, so one invalid candidate (directory, symlink, hard link, or live-DB alias matching the backup pattern) returns Err immediately. remove_backups calls backups(path)? before its removal loop, so it aborts without deleting any valid snapshots, contradicting its documented contract to attempt every file and return the first failure. Collect valid candidates while recording the first validation error so valid backups are still removed before reporting the failure.
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⚠️ DEGRADED — Re-review — Final validation — Phase 2 only (queue backlog)
⚠️ DEGRADED review. The primary review models were unavailable (gpt-6-astraunavailable: All credentials for model gpt-6-astra are cooling down (last error: usage_limit_reached: The usage limit has been reache), so this review ran on stand-in models:gpt-5.6-luna→muse-spark-1.3-contributor,gpt-5.6-sol→muse-spark-1.3-contributor,gpt-5.6-terra→muse-spark-1.3-contributor,gpt-6-astra→muse-spark-1.3-contributor. Both review phases and the independent verifiers still ran, but on weaker models, with Phase 1 capped athigheffort. Treat the verdict as provisional; a full-strength re-review will run on the next push once the primary models are back.
This upgrade-backup hardening is a real improvement, but three defects still hold: one invalid scan candidate blocks all deletions, recoverable migration resource failures report as terminal incompatible-data, and a single prune failure leaves multiple snapshots on disk.
🔴 1 blocking | 🟡 2 suggestion(s)
3 carried-forward finding(s) already raised on this PR; not re-posting as new inline comments.
Review provenance
Source: reviewer 1: muse-spark-1.3-contributor (standing in for gpt-6-astra) (agent: phase2-reviewer, role: general); reviewer 2: muse-spark-1.3-contributor (standing in for gpt-6-astra) (agent: phase2-reviewer, role: rust-quality); final verifier: muse-spark-1.3-contributor (standing in for gpt-6-astra) (agent: astra-verifier, role: final-verifier)
- Degraded mode:
gpt-6-astraunavailable: All credentials for model gpt-6-astra are cooling down (last error: usage_limit_reached: The usage limit has been reache (detected by probe, since 2026-09-20T20:45:34Z); stand-insgpt-5.6-luna→muse-spark-1.3-contributor,gpt-5.6-sol→muse-spark-1.3-contributor,gpt-5.6-terra→muse-spark-1.3-contributor,gpt-6-astra→muse-spark-1.3-contributor; Phase 1 effort capped athigh - Triage:
criticalbymuse-spark-1.3-contributor(standing in forgpt-6-astra) (effort low) — Large (+1313/-71) change alters staged conversion and backup retention in src/wallet_backend/platform_compatibility/engine.rs, directly changing storage-migration safety. - Phase 1 reviewers: not run (skipped for throughput: 28 PRs queued, above the 10 limit)
- Fresh verifier:
muse-spark-1.3-contributor(standing in forgpt-6-astra) — final-verifier; agentastra-verifier - Phase 2 reviewers:
muse-spark-1.3-contributor(standing in forgpt-6-astra) — general (completed, effort xhigh); agentphase2-reviewer,muse-spark-1.3-contributor(standing in forgpt-6-astra) — rust-quality (completed, effort xhigh); agentphase2-reviewer
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `src/wallet_backend/platform_compatibility/engine.rs`:
- [SUGGESTION] src/wallet_backend/platform_compatibility/engine.rs:289-293: Scanning backup candidates aborts before removing valid snapshots
(existing thread: https://github.com/dashpay/dash-evo-tool/pull/994#discussion_r4051685499)
backups_in() calls validate_backup_file(&entry.path(), path)? at line 291 inside the directory scan, so a single name-matching directory, symlink, hard link, or live-database alias returns Err before any valid snapshot is collected. remove_backups() then propagates that error from backups(path)? at line 446 before its attempt-every-file loop runs, leaving every valid snapshot on disk. That contradicts the documented contract on remove_backups to attempt every file and return the first failure.
- [SUGGESTION] src/wallet_backend/platform_compatibility/engine.rs:432-437: Failed pruning can leave multiple retained upgrade backups
(existing thread: https://github.com/dashpay/dash-evo-tool/pull/994#discussion_r4017700677)
retain_one_backup_locked() evicts old snapshots with remove_backup(&backup, path)? in a loop, so the first deletion failure returns immediately and leaves the remaining older snapshots plus the newest on disk. That breaks the at-most-one-snapshot invariant until a later prune succeeds, while remove_backups() next to it already uses the correct attempt-every-file pattern. The same early-? pattern in backup_with_hook_locked() has the same effect when publishing a new snapshot.
In `src/backend_task/error.rs`:
- [BLOCKING] src/backend_task/error.rs:2891-2898: Classify recoverable migration errors as retryable storage failures
(existing thread: https://github.com/dashpay/dash-evo-tool/pull/994#discussion_r4051685496)
from_wallet_storage_open_error() maps every WalletStorageError::Migration except Busy/Locked to terminal WalletDataIncompatible. A migration chain carrying rusqlite DiskFull, SystemIoFailure, or OutOfMemory is recoverable by freeing space or retrying, but the user gets incompatible-data move-aside guidance. This is also inconsistent with the staged-upgrade path, which already treats those codes as retryable. Route exactly those three cause codes to WalletStorage and leave PermissionDenied/ReadOnly on the existing path.
…w-blocking-findings
A wallet-storage migration that fails on SQLite DiskFull, SystemIoFailure or OutOfMemory is recoverable by freeing the resource and retrying, but it was classified as terminal WalletDataIncompatible, showing move-the- databases-aside guidance and stopping the cold-boot retry bridge. Route those causes to the generic retryable WalletStorage variant; access failures (PermissionDenied, ReadOnly) keep their existing classification. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
remove_backups aborted on the first backup candidate that failed validation (directory, symlink, hard link, live-database alias), leaving every valid snapshot of the removed wallet on disk. Deletion now scans tolerantly, removes all valid snapshots and then reports the first rejection. Retention and publication keep the strict fail-fast scan. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Re-review — Final validation — Phase 2 only (queue backlog)
Verified the complete diff at 14f08fb and confirmed that all 12 prior findings are fixed. One non-blocking durability issue remains: backup deletion can be acknowledged before its directory changes are durable, allowing the cleanup manifest to be retired prematurely. The 43 exercised targeted tests passed; one additional external-fixture test self-skipped, and formatting and whitespace checks passed with the worktree unchanged.
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Review provenance
Source: reviewer 1: gpt-6-astra (agent: phase2-reviewer, role: general); reviewer 2: gpt-6-astra (agent: phase2-reviewer, role: rust-quality); reviewer 3: gpt-6-astra (agent: phase2-reviewer, role: general); reviewer 4: gpt-6-astra (agent: phase2-reviewer, role: rust-quality); final verifier: gpt-6-astra (agent: astra-verifier, role: final-verifier)
- Triage:
criticalbygpt-6-astra(effort low) — The diff substantially changes storage migration safety in src/wallet_backend/platform_compatibility/engine.rs, including backup publication ordering, retention, filesystem validation and deletion, alongside cross-cutting cleanup retries and migration failure handling. - Phase 1 reviewers: not run (skipped for throughput: 20 PRs queued, above the 10 limit)
- Fresh final gate: an independent Phase-2 review ran after iterative findings were reconciled
- Fresh verifier:
gpt-6-astra— final-verifier; agentastra-verifier - Phase 2 reviewers:
gpt-6-astra— general (completed, effort xhigh); agentphase2-reviewer,gpt-6-astra— rust-quality (completed, effort xhigh); agentphase2-reviewer,gpt-6-astra— general (completed, effort xhigh); agentphase2-reviewer,gpt-6-astra— rust-quality (completed, effort xhigh); agentphase2-reviewer
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `src/wallet_backend/platform_compatibility/engine.rs`:
- [SUGGESTION] src/wallet_backend/platform_compatibility/engine.rs:476-481: Make backup deletion durable before retiring the cleanup manifest
Successful remove_file calls do not guarantee that directory-entry deletions survive power loss. After this function returns Ok, finish_identity_removal_cleanup deletes the persistent cleanup manifest, but neither path synchronizes the affected backup directories. The manifest deletion can therefore persist while an unlink in backups/auto does not, leaving a snapshot containing removed identity data without a manifest to retry its deletion. Startup retention does not close this gap because it deliberately keeps one published snapshot. Synchronize the affected parent directories before reporting successful cleanup, and propagate synchronization failures through the existing incomplete-cleanup path. Add a fault-injection regression showing that a directory-sync failure preserves the manifest.
…w-blocking-findings
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…oval Identity removal no longer deletes storage-upgrade backups. The persisted per-identity cleanup marker, the captured backup scope, and the named-backup removal helpers are gone, along with their retry logic and tests. Removing an identity keeps the vault key manifest cleanup unchanged. Upgrade backups now expire after a configurable retention period, 90 days by default. Retention covers bridge snapshots, upstream pre-migration snapshots, and legacy data.db migration backups. A backup's age is taken from the later of its modification time and the timestamp in its name, so a reset or skewed signal can only delay deletion. Pruning runs once both databases have opened successfully, at startup and whenever the user changes the setting. An expired snapshot is removed only after the data it protects has opened successfully. The policy lives under its own app k/v key, det:upgrade_backup_retention:v1. It is not a field in the positional AppSettings blob, so older builds and existing installs still decode their settings. An unreadable policy deletes nothing. Settings gains an Upgrade Backups section where the user can change the period (1 to 3650 days) or keep backups forever. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Removing a wallet no longer deletes upgrade backups. Each backup copies a whole database, including the data of the other wallets, so deleting it with a single wallet destroys recovery snapshots the remaining wallets still depend on. Time-based retention decides when backups are removed. Clearing a network's data still deletes them. Replace the wallet-removal deletion tests with tests asserting the backups survive removal, with and without a wallet backend. Drop the test for the cleanup-failure warning, since removal no longer attempts that cleanup. Update the CHANGELOG, the upgrade notes, and user stories WAL-007/WAL-034. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Address QA findings on time-based upgrade-backup retention: - Settings asks for a danger-mode confirmation before saving a stricter policy (shorter period, or turning deletion on), because that deletes backups immediately. The saved result reports how many backups were deleted and shows it in a banner. - The form treats a policy as saved only once the backend confirms it. A failed save restores the previous inputs instead of showing a policy that was never persisted. An unreadable setting is shown as not loaded (nothing is deleted), and an explicit Save Setting button repairs it. - Legacy backup pruning refuses a symlinked or non-directory `backups` path, and counts a backup deleted concurrently by another prune as handled instead of failing. - Correct the user-story wording: a change applies right away only to shared and current-network backups. - Add tests for the ensure_wallet_backend prune wiring, for skipping the prune when the wallet open fails, for both branches of handle_update_backup_retention, and for rejecting malformed upstream timestamps. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
…usy frames Fix three issues found in QA of the retention settings form: - Results and errors of UpdateBackupRetention now go to the network chooser screen, as ClearNetworkDatabase results already do, rather than to whichever screen is visible. Navigating away while a save is in flight no longer leaves the form disabled or loses the result banner. - Ticking "Delete old upgrade backups automatically" no longer saves on its own. The user picks the period and then applies it with "Turn On Automatic Deletion". The confirmation shows the period the user chose instead of the 90-day default, so choosing 365 days never deletes backups that are 90 to 365 days old. - A save is queued and emitted only on a frame with no other screen action, and is marked in flight only once emitted. Another action on the same frame, such as the SDK reinit after DAPI discovery, can no longer overwrite the save and leave the form waiting forever. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
All production file deletions now go through a new `utils::file_deletion::delete_file` (plus `delete_tree`, which unlinks each file through it). Before anything is unlinked, the chokepoint makes sure the target is a regular file. It then checks a hard deny-list by name: det-app.sqlite, data.db, every network's wallet and shielded DB, *.pwsvault, .env and *.premigration, each with its -wal/-shm/-journal sidecars. The same deny-list is checked again by canonical location and inode, which catches `..`, symlink, case and hard-link aliases. After that come a link-count check and the scope of the caller's `DeletionIntent`. - Backup: upgrade-engine and legacy data.db backup retention (legacy pruning now gets the live-DB and hard-link checks the engine already had) - NetworkClear: confined to spv/<network>/ and its lock, used by the SPV cache clear and the retired shielded-file cleanup - Log: rotated `<stem>.<ts>.log` files; works before AppContext exists The deliberate exceptions (tempfile self-cleanup, atomic renames) carry a comment at the call site. A sentinel test runs retention, wallet removal, identity removal, log rotation and a full testnet network clear against a data dir holding every network's databases, and asserts that every untargeted file is byte-identical afterwards. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
… chokepoint Published upgrade snapshots are now deleted only by the user's time-based retention: opening a database removes just crash-left `.pending` copies and byte-identical duplicates of a newer snapshot of the same migration (size check, then a streamed comparison), so "Keep forever" keeps every distinct snapshot while repeated failed upgrades no longer pile up copies. Retention is one global policy for every database in the data directory (app database and every network's wallet database, plus legacy data.db backups) and always keeps the newest backup of each database, whatever its age or the clock. A database whose lifecycle lock is held is skipped, and one without backups is not locked at all. A network clear removes only that network's wallet backups; det-app.sqlite backups stay under retention. Deletion chokepoint: Backup intents allow only the exact backup name grammar of their database; delete_tree scope-checks every directory and walks iteratively; a network clear unlinks symlinked SPV entries without following them; Windows refuses alias-prone names; clippy.toml disallows raw fs remove calls. One shared prune helper, one storage-failure classifier, shared file-name constants, a single rotated-log grammar. UI: out-of-range retention days stay visible with an error instead of being clamped and saved, singular confirmation copy, the form re-syncs on arrival so a lost result cannot wedge it, and cleanup failures carry details. Docs (CHANGELOG, WAL-034, upgrade notes, AGENTS.md) describe the new behaviour. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
… holds `flock` belongs to the open file description, and a child forked by any thread of this process shares that description until it execs. A lifecycle lock that was just released could therefore still look held, so an open or backup failed with a retryable "storage unavailable" error whenever another thread spawned a process at that moment (seen as a CI flake in platform_compatibility_failed_publication_keeps_previous_snapshot). Contended locks are now retried for a 500 ms grace period before reporting WouldBlock. A regression test re-acquires the lock while processes spawn alongside; it fails without the grace period. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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…open copies The retention floor could keep an empty or truncated newest file while deleting the only complete snapshot. The floor is now the newest backup that passes a cheap structural SQLite check (magic, page size, file size covering every page the header claims, no hot rollback journal), for bridge, upstream and legacy backups alike. If nothing passes, the newest file is still kept. The floor no longer trusts a skewable clock alone: backups dated more than a day in the future do not displace one dated in the past, and the upstream snapshot of the latest migration (a clock-independent order) is kept too. The failed-open bound test depended on the umask: with a group-writable temp dir upstream refused the open before snapshotting, so it passed locally but failed in CI, where upstream writes a real pre-migration copy per failed open. It now uses an owner-only data dir and asserts that the real copies collapse to one. Also: one SPV directory helper, typed scan-classification errors, a shared lifecycle-lock path helper, truthful and shared cleanup-retry wording, and stale comments fixed. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The retention check treated an unreadable backup as unusable, so a read error on the newest snapshot handed the floor to an older copy and let the newest one expire. Usability is now three-way: usable, unusable, or undetermined. Undetermined covers a file that cannot be read (also reported, so the pass retries) and a complete-looking file with a non-empty rollback journal beside it. Undetermined backups are never deleted automatically and never displace the newest usable one. Legacy data.db backups are now written to a pending file, synced and renamed without overwriting, so a crash cannot leave a torn copy under a backup name. The clock-skew limit is documented and pinned by a test: a future-dated backup stops being de-preferred once real time reaches its date. WAL-034, the CHANGELOG and the upgrade notes now mention the no-usable-backup fallback. Also: misplaced doc comment and test in error.rs, and the SPV root directory now comes from one helper. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A legacy data.db backup interrupted before its rename left a `<backup name>.<random>.pending` file that nothing ever removed. Every retention pass now sweeps such copies, whatever the policy, once they are more than a day old (so a copy still being written is left alone). Only the exact temporary-name grammar qualifies, and the deletion chokepoint's legacy allow-list accepts that grammar and nothing looser. WAL-034 now states the accepted clock limit instead of promising the floor holds whatever the system clock does. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Legacy backup names have one-second resolution, and the non-clobbering publish returned AlreadyExists when a backup of the same second existed, aborting startup through backup_db. The copy is now published under the next free second (up to 60 tries), which keeps the data_backup_<ts> grammar and the chokepoint allow-list, never overwrites an existing backup, and leaves no temporary copy behind. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Every production boot path (GUI `AppState::boot_inputs`, det-cli/headless `mcp::server`) opens an existing `data.db` read-only and calls `Database::initialize` only for a fresh file, so `backup_db` and `legacy_backups::write_backup` never ran outside tests. Remove `backup_db`, `write_backup` with its collision retry, the `.pending` unpublished-copy scheme (`is_pending_backup_name`, `sweep_pending`, its retention call and the chokepoint allow-list branch) and their tests. The `.pending` scheme never shipped, so no user has such files to sweep. Time-based retention of existing `backups/data_backup_*.db` files left by older versions stays, including the name grammar, the usability floor and the chokepoint allow-list for those names. The legacy migration ladder is kept for the migration-fixture tests. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
…w-blocking-findings
Keep each retention/floor/classification invariant proven once at the right level instead of re-asserting it at three or four layers: - drop engine/legacy/retention floor and clock tests already covered by backup_prune unit tests; keep the unreadable-copy case - one table-driven StorageFailure test plus one mapping test per consumer - merge overlapping backup-retention form tests - add a bridge_backup_path test helper for hand-built fixture names - compute a backup's creation time in one place (backup_prune::created_at) - drop the always-true selection filter from remove_backups - trim internal docs to present state Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Open-time tidying logs and continues before and after the open; the current-database probe that let a strict tidy block upgrades is gone. - The backup scan skips symlinks and directories and leaves every other refusal (live database, hard links) to the deletion chokepoint; only the lifecycle lock file keeps its own symlink/hard-link guard. - Backup removal syncs only the directories it actually deleted from. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A backup-named hard link (e.g. to the live database) looked like a complete, newest snapshot, so it could become the retention floor and let the real newest backup expire. The backup scan now skips files with more than one link, as it already skips symlinks and directories. Also stop pinning SQLITE_PERM/SQLITE_READONLY migration failures as terminal in the resource-error test; their mapping is not settled here. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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The chokepoint and its test suite are genuinely solid, but six MEDIUM findings trip must-fix gates: the branch's own headline "never treat a hard-linked file as an upgrade backup" fix only covers one of three sites and only on Unix, a new lock file can permanently brick opening wallet data with a misleading disk-space message, a permission-denied error gets misrouted into a terminal recovery-phrase eulogy, the new incompatible-data message is a jargon-stuffed wall of text, a destructive confirmation dialog can silently fail to delete what it promised, and removing a wallet now keeps at least one backup of its data forever with no disclosure. REQUEST_CHANGES — close the gaps this branch was supposed to close before it ships.
13 finding(s) posted: 5 inline, 8 in this body.
Findings outside the diff or deferred
- PROJ-001 · MEDIUM — Retention save sets its own banner in the screen, contradicting ScreenLike's docs and its neighbour in app.rs —
/home/runner/work/dash-evo-tool/dash-evo-tool/src/ui/network_chooser_screen.rs:2027-2044, /home/runner/work/dash-evo-tool/dash-evo-tool/src/app.rs:2949-2977, /home/runner/work/dash-evo-tool/dash-evo-tool/src/ui/mod.rs:842-849
Two adjacent match arms in app.rs, same job, opposite division of labor — one lets AppState own the banner like the docs say, the other has the screen freelancing its own. Pick a lane before the next contributor copies the wrong example.
- PROJ-002 · MEDIUM — A UI-only banner string lives in backend_task/error.rs and near-duplicates the TaskError it shadows —
/home/runner/work/dash-evo-tool/dash-evo-tool/src/backend_task/error.rs:113, /home/runner/work/dash-evo-tool/dash-evo-tool/src/backend_task/error.rs:1193-1205, /home/runner/work/dash-evo-tool/dash-evo-tool/src/ui/network_chooser_screen.rs:1385-1398, /home/runner/work/dash-evo-tool/dash-evo-tool/src…
A UI banner string is moonlighting in backend_task/error.rs with no TaskError variant to its name, paraphrasing the error sitting two lines away. Delete the duplicate and derive the banner from the TaskError you're already holding.
- PROJ-003 · MEDIUM · BLOCKING — Confirmation dialog and WAL-034 promise backups are "deleted now"; the handler skips pruning entirely before the wallet backend is wired —
/home/runner/work/dash-evo-tool/dash-evo-tool/src/backend_task/system_task/mod.rs:66-90, /home/runner/work/dash-evo-tool/dash-evo-tool/src/ui/network_chooser_screen.rs:1400-1409, /home/runner/work/dash-evo-tool/dash-evo-tool/docs/user-stories.md:142
The confirmation dialog swears backups are 'deleted now.' The handler just... doesn't, if the wallet backend isn't wired yet — which is exactly the state right after launch, the most likely time someone visits Settings. That's a promise this PR can't currently cash.
- PROJ-004 · MEDIUM — New clippy.toml is not in any workflow path filter, so a change to it alone ships unlinted —
/home/runner/work/dash-evo-tool/dash-evo-tool/clippy.toml:1-9, /home/runner/work/dash-evo-tool/dash-evo-tool/.github/workflows/clippy.yml:10-16, /home/runner/work/dash-evo-tool/dash-evo-tool/AGENTS.md:60
clippy.toml is the entire enforcement mechanism for your prized deletion chokepoint, and it's invisible to every CI workflow path filter. A typo in the deny-list ships with zero verification. Add it to the filter list before it becomes a very quiet incident.
- PROJ-005 · MEDIUM — Two new modules land outside the DET Module Placement Policy AGENTS.md just extended —
/home/runner/work/dash-evo-tool/dash-evo-tool/AGENTS.md:117, /home/runner/work/dash-evo-tool/dash-evo-tool/src/utils/backup_prune.rs:1-30, /home/runner/work/dash-evo-tool/dash-evo-tool/src/database/legacy_backups.rs:1-70
Four new modules, one module-placement-policy update. backup_prune.rs and legacy_backups.rs land outside the very policy this PR bothered to amend. Either extend the policy or relocate the code — not both silently unaddressed.
- RUST-001 · MEDIUM — BackupRetentionForm renders egui without the Component pattern, and its two buttons are the only unstyled ones in the screen —
/home/runner/work/dash-evo-tool/dash-evo-tool/src/ui/network_chooser_screen.rs:1587-1660, /home/runner/work/dash-evo-tool/dash-evo-tool/src/ui/network_chooser_screen.rs:1624-1627
BackupRetentionForm is 250+ lines of unstyled egui with its own private outbox mechanism nothing else in the codebase uses, sporting the only two bare ui.button calls in the file. It works, but it's not playing by the house component rules.
- RUST-002 · MEDIUM · BLOCKING — WalletDataIncompatible's Display is a 590-character six-sentence instruction block with SQLite sidecar jargon —
/home/runner/work/dash-evo-tool/dash-evo-tool/src/backend_task/error.rs:502-512, /home/runner/work/dash-evo-tool/dash-evo-tool/src/app/reconcilers.rs:690-706
WalletDataIncompatible's new message is a genuine improvement over almost nuking the vault — and also a 590-character wall of .sqlite-wal/.sqlite-shm jargon instructing users to hand-transcribe private keys, in direct violation of this repo's own no-jargon error rules. Trim it, and move the recovery steps somewhere a scared user can actually process them.
- RUST-003 · MEDIUM — Retention's database list omits the per-network shielded database the chokepoint explicitly protects —
/home/runner/work/dash-evo-tool/dash-evo-tool/src/context/wallet_lifecycle/retention.rs:18-27, /home/runner/work/dash-evo-tool/dash-evo-tool/src/utils/file_deletion.rs:274-280, /home/runner/work/dash-evo-tool/dash-evo-tool/src/context/wallet_lifecycle/removal.rs:81-91
The deletion deny-list knows the per-network shielded database exists; the retention/prune list forgot it. If upstream ever snapshots it, those backups outlive every retention setting and survive a network clear. At minimum, leave a comment saying the omission is deliberate.
🤖 Co-authored by Claudius the Magnificent AI Agent
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| pub fn from_wallet_storage_open_error( | ||
| source: platform_wallet_storage::WalletStorageError, | ||
| ) -> Self { |
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SEC-001 · MEDIUM · BLOCKING — A permission-denied / read-only migration failure still gets the terminal "move your .sqlite files aside" guidance
A permission hiccup and you're already handing the user a six-step 'write down your recovery phrases' eulogy? AccessDenied deserves the same dignified retry path StorageFull got — right now it's misclassified as terminal, and your own last commit admits the mapping isn't settled. Fix the classification before this ships.
| /// Delete the retained compatibility-upgrade backups of this network's wallet | ||
| /// database, which copy the wallet and identity history a network clear wipes. | ||
| /// | ||
| /// The shared app database's backups also hold other networks' data, so they are | ||
| /// left to time-based retention. Filesystem cleanup is available even when the | ||
| /// wallet backend could not be opened. Removing a single wallet or identity never | ||
| /// calls this: those backups also hold other wallets' data. | ||
| pub(crate) fn remove_upgrade_backups(&self) -> Result<(), TaskError> { | ||
| crate::wallet_backend::platform_compatibility::remove_backups( | ||
| &crate::wallet_backend::wallet_database_path(self.data_dir(), self.network), | ||
| ) | ||
| .map_err(|source| TaskError::FileSystem { source }) | ||
| } |
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SEC-002 · MEDIUM · BLOCKING — Removing a wallet or identity now retains copies of its xpubs, addresses and history for up to the retention period
Removing a wallet used to remove its backups too; now at least one copy of its xpubs/address history sticks around forever via the retention floor, and nobody tells the user. 'Remove wallet' quietly became 'remove wallet, mostly, eventually, for some of it.' Add a purge control or say so out loud in the removal flow.
| #[cfg(unix)] | ||
| { | ||
| use std::os::unix::fs::MetadataExt; | ||
| match metadata.nlink() { | ||
| 1 => {} | ||
| // Unlinked by a concurrent deletion between lookup and stat. | ||
| 0 => return Err(std::io::ErrorKind::NotFound.into()), | ||
| _ => return Err(refused(|path| DeletionRefused::HardLinked { path })), | ||
| } | ||
| } |
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SEC-003 · MEDIUM · BLOCKING — The hard-link defence is Unix-only: on Windows a backup-named hard link can still poison the retention floor
The headline commit of this whole PR — 'never treat a hard-linked file as an upgrade backup' — only patches one of three enumeration sites, and only on Unix. Windows users and the legacy data.db scanner get to keep enjoying the exact bug this branch exists to kill. Finish the job everywhere it applies.
| pub(crate) fn is_terminal_storage_open_error(error: &TaskError) -> bool { | ||
| matches!( | ||
| error, | ||
| match error { | ||
| TaskError::WalletDataTooNew { .. } | ||
| | TaskError::WalletDataIncompatible { .. } | ||
| | TaskError::WalletDataFolderInsecure { .. } | ||
| ) | ||
| | TaskError::WalletDataIncompatible { .. } | ||
| | TaskError::WalletDataFolderInsecure { .. } => true, | ||
| TaskError::PlatformDatabaseUpgrade { source } => !source.is_retryable(), | ||
| _ => false, | ||
| } | ||
| } |
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SEC-004 · MEDIUM — WalletStorageInUse is non-terminal, so its "close the other session" message is logged-and-discarded on the wallet-task path
WalletStorageInUse's nice 'close the other session' message gets logged and thrown away on the ensure_wallet_backend path — the one place someone running two instances would actually see it. Wire it into the terminal-error list, or it's dead code with good intentions.
| fn check_lock_file(lock: &Path) -> std::io::Result<()> { | ||
| if is_single_link_file(&std::fs::symlink_metadata(lock)?) { | ||
| Ok(()) | ||
| } else { | ||
| Err(std::io::Error::other( | ||
| "Upgrade lock path is not a single-link regular file", | ||
| )) | ||
| } | ||
| } | ||
|
|
||
| pub(super) fn backup_lock(path: &Path) -> std::io::Result<BackupGuard> { | ||
| let Some(lock_path) = backup_lock_path(path) else { | ||
| return Err(std::io::ErrorKind::InvalidInput.into()); | ||
| }; | ||
| let mut options = std::fs::File::options(); | ||
| options.read(true).write(true).create_new(true); | ||
| #[cfg(unix)] | ||
| { | ||
| use std::os::unix::fs::OpenOptionsExt; | ||
| options.mode(0o600); | ||
| } | ||
| let file = match options.open(&lock_path) { | ||
| Ok(file) => file, | ||
| Err(error) if error.kind() == std::io::ErrorKind::AlreadyExists => { | ||
| check_lock_file(&lock_path)?; | ||
| std::fs::File::options() | ||
| .read(true) | ||
| .write(true) | ||
| .open(&lock_path)? | ||
| } | ||
| // A missing parent has no snapshots to clean up. | ||
| Err(error) if error.kind() == std::io::ErrorKind::NotFound => { | ||
| return Ok(BackupGuard { | ||
| path: path.to_owned(), | ||
| _file: None, | ||
| }); | ||
| } | ||
| Err(error) => return Err(error), | ||
| }; | ||
| lock_with_grace(&file)?; | ||
| // Keep the pathname stable: unlinking it could let contenders lock different files. | ||
| Ok(BackupGuard { | ||
| path: path.to_owned(), | ||
| _file: Some(file), | ||
| }) | ||
| } |
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SEC-005 · MEDIUM · BLOCKING — The new lifecycle lock file is an undeletable single point of failure with a misleading error message
New lock file, new brick: a corrupted or hard-linked .platform-upgrade.lock permanently blocks opening wallet data, the chokepoint refuses to delete it, and the error message blames disk space. That's a self-inflicted 'can't start the app' bug wearing a misdirection costume.
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Re-review — Final validation — Phase 1 + Phase 2
One recovery-safety blocker remains: legacy backups and Windows backup scanning still allow hard-linked aliases to become retention floors, permitting deletion of independent recovery copies. The revised removal and housekeeping design resolves or supersedes all 21 prior findings; additional suggestions address contention messages, the future-date contract, and two independently reproduced macOS test failures. Focused compatibility, retention-floor, migration-classification, and cleanup checks otherwise passed at the exact head.
🔴 1 blocking | 🟡 4 suggestion(s)
1 finding(s) not shown inline (the lines are not part of this PR's diff)
🟡 Suggestion: Surface wallet-storage contention instead of discarding it during task dispatch
src/backend_task/mod.rs:1215-1227
The new WalletStorageInUse and retryable PlatformDatabaseUpgrade errors are excluded from is_terminal_storage_open_error, so this gate logs and discards them. The dispatched wallet task then continues without a backend and fails with WalletBackendNotYetWired rather than displaying the specific instruction to close the competing session. Lifecycle-lock contention follows the same path through WalletStorageNotReady. Return the initialization error to the currently dispatched task while preserving its non-terminal classification for future cold-boot retries. Adding contention to the terminal list, as one proposed fix suggests, would incorrectly disable that retry behavior.
source: muse-spark-1.3-contributor (phase1-reviewer: general, rust-quality); gpt-6.1-sol (phase2-reviewer: general)
Review provenance
Source: reviewer 1: muse-spark-1.3-contributor (agent: phase1-reviewer, role: general); reviewer 2: muse-spark-1.3-contributor (agent: phase1-reviewer, role: rust-quality); reviewer 3: gpt-6.1-sol (agent: phase2-reviewer, role: general); reviewer 4: gpt-6.1-sol (agent: phase2-reviewer, role: rust-quality); final verifier: gpt-6.1-sol (agent: sol-verifier, role: final-verifier)
- Triage:
criticalbygpt-6.1-sol(effort low) — The large, intricate diff directly changes storage migration and recovery behavior in src/wallet_backend/platform_compatibility/engine.rs, including staged conversion validation, original-database backups, and backup cleanup, meeting both the complexity and critical-surface criteria. - Phase 1 reviewers:
muse-spark-1.3-contributor— general (completed, effort xhigh); agentphase1-reviewer,muse-spark-1.3-contributor— rust-quality (completed, effort xhigh); agentphase1-reviewer - Phase 1 model:
muse-spark-1.3-contributor— not quota-gated; passed overgemini-3.8-flash-high(antigravity below 15% reserve: weekly 13% left, 5h 100% left),glm-5.3-flash(not used above high effort; tier asks max) - Fresh verifier:
gpt-6.1-sol— final-verifier; agentsol-verifier - Phase 2 reviewers:
gpt-6.1-sol— general (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— rust-quality (completed, effort xhigh); agentphase2-reviewer
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `src/database/legacy_backups.rs`:
- [BLOCKING] src/database/legacy_backups.rs:63-70: Reject hard-linked candidates before selecting the retention floor
The legacy scanner rejects non-regular entries but accepts hard links. A correctly named hard link to live data.db therefore passes the SQLite-header check and can become the newest usable retention floor. Pruning skips that floor before invoking the deletion chokepoint, then deletes an older independent recovery snapshot; the chokepoint cannot prevent this loss. The same problem remains for bridge and upstream backups on Windows because engine::is_single_link_file returns true for every non-Unix regular file, and the chokepoint's link-count check is also Unix-only. Enforce the single-link invariant before floor selection in every scanner, including Windows, and add legacy and Windows regressions proving that a live-database alias cannot displace an independent snapshot.
- [SUGGESTION] src/database/legacy_backups.rs:54-58: Serialize the legacy backup scan and prune
Unlike bridge and upstream retention, legacy retention runs without a shared lifecycle lock. The metadata-check, unlink, and deletion-count sequence is therefore not serialized across network contexts. At this exact head on macOS, concurrent_legacy_backup_prunes_do_not_fail failed with 14 reported deletions for nine removable files. Ignoring NotFound does not establish exactly-once counting on this platform, so the production retention report can overcount and the new regression fails. Hold a shared per-database lock across enumeration, floor selection, and deletion.
In `src/backend_task/mod.rs`:
- [SUGGESTION] src/backend_task/mod.rs:1215-1227: Surface wallet-storage contention instead of discarding it during task dispatch
The new WalletStorageInUse and retryable PlatformDatabaseUpgrade errors are excluded from is_terminal_storage_open_error, so this gate logs and discards them. The dispatched wallet task then continues without a backend and fails with WalletBackendNotYetWired rather than displaying the specific instruction to close the competing session. Lifecycle-lock contention follows the same path through WalletStorageNotReady. Return the initialization error to the currently dispatched task while preserving its non-terminal classification for future cold-boot retries. Adding contention to the terminal list, as one proposed fix suggests, would incorrectly disable that retry behavior.
In `src/utils/file_deletion/tests.rs`:
- [SUGGESTION] src/utils/file_deletion/tests.rs:532-537: Keep the deep-tree fixture within platform path limits
One thousand one-character directory components still produce a path longer than 2,000 bytes, exceeding macOS's supported path length. The focused test at this exact head failed during create_dir_all with OS error 63, "File name too long", before delete_tree was exercised. Choose a depth within the platform's path budget, including the temporary-directory prefix and leaf filename, so the test validates iterative deletion rather than failing while constructing its fixture.
In `src/utils/backup_prune.rs`:
- [SUGGESTION] src/utils/backup_prune.rs:132-136: Align the future-date retention contract with the 24-hour tolerance
The implementation deliberately trusts creation times up to 24 hours after now, and floor_resists_clock_skew explicitly tests that a copy one minute in the future wins the time floor. However, upgrade-notes.md and the PR description promise that a future-dated copy cannot displace a past copy until its date arrives. For legacy backups, which have no migration-sequence floor, the current behavior can delete an expired past recovery copy while retaining the future-dated one. Either use now as the trust boundary or document the intentional 24-hour exception consistently; the existing test demonstrates that this is a contract mismatch, not an untested accident.
Out-of-scope follow-up suggestions (3)
These are valid observations, but they are outside this PR's scope and should be handled in separate issues or author/maintainer-requested PRs rather than blocking this review.
- Complete permission and read-only migration guidance in the assigned follow-up — PermissionDenied and ReadOnly migration causes still fall through to WalletDataIncompatible instead of receiving permission-specific guidance. The base revision already mapped all Migration failures to that variant, and this PR's resource-classification changes do not newly introduce or worsen the access-denied path. The maintainer explicitly assigned this concrete guidance issue to stacked PR #1020.
- Follow-up: Complete PR #1020 with typed permission/read-only migration tests and appropriate guidance on both storage-opening paths.
- Resolve permitted ancestor symlinks in compatibility-engine SQLite opens — The compatibility engine still opens source and staged databases with SQLITE_OPEN_NOFOLLOW using unresolved ancestor paths. This can reject ordinary macOS /var/folders paths during an upgrade, although header-only retention validation now follows permitted ancestors correctly. The same unresolved SQLite opens are present at the PR base, so this is a concrete pre-existing upgrade-path issue rather than a regression from the new retention behavior.
- Follow-up: Track a separate fix that resolves permitted ancestor symlinks before compatibility-engine SQLite opens while continuing to reject symlinks at database entries.
- Keep permission and read-only migration failures out of incompatible-data guidance — Out of scope for this review: the base already routed Migration failures to WalletDataIncompatible, and the current resource guard leaves the access-denied behavior unchanged. The concrete remaining issue is retained as an internal follow-up for the explicitly assigned stacked PR #1020, not as a blocker here.
- Follow-up: Consider creating a separate issue or author/maintainer-requested PR for this.
| let path = entry.path(); | ||
| if std::fs::symlink_metadata(&path).is_ok_and(|metadata| !metadata.is_file()) { | ||
| continue; | ||
| } | ||
| candidates.push(crate::utils::backup_prune::Candidate { | ||
| created: crate::utils::backup_prune::created_at(&path, Some(named)), | ||
| path, | ||
| sequence: None, |
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🔴 Blocking: Reject hard-linked candidates before selecting the retention floor
The legacy scanner rejects non-regular entries but accepts hard links. A correctly named hard link to live data.db therefore passes the SQLite-header check and can become the newest usable retention floor. Pruning skips that floor before invoking the deletion chokepoint, then deletes an older independent recovery snapshot; the chokepoint cannot prevent this loss. The same problem remains for bridge and upstream backups on Windows because engine::is_single_link_file returns true for every non-Unix regular file, and the chokepoint's link-count check is also Unix-only. Enforce the single-link invariant before floor selection in every scanner, including Windows, and add legacy and Windows regressions proving that a live-database alias cannot displace an independent snapshot.
source: muse-spark-1.3-contributor (phase1-reviewer: general, rust-quality); gpt-6.1-sol (phase2-reviewer: rust-quality)
| let Some(directory) = backup_directory(data_dir)? else { | ||
| return Ok(0); | ||
| }; | ||
| let mut candidates = Vec::new(); | ||
| for entry in std::fs::read_dir(&directory)? { |
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🟡 Suggestion: Serialize the legacy backup scan and prune
Unlike bridge and upstream retention, legacy retention runs without a shared lifecycle lock. The metadata-check, unlink, and deletion-count sequence is therefore not serialized across network contexts. At this exact head on macOS, concurrent_legacy_backup_prunes_do_not_fail failed with 14 reported deletions for nine removable files. Ignoring NotFound does not establish exactly-once counting on this platform, so the production retention report can overcount and the new regression fails. Hold a shared per-database lock across enumeration, floor selection, and deletion.
source: gpt-6.1-sol (phase2-reviewer: rust-quality)
| // Short components keep the full path within OS limits. | ||
| let mut deepest = root.clone(); | ||
| for _ in 0..1000 { | ||
| deepest.push("d"); | ||
| } | ||
| std::fs::create_dir_all(&deepest).unwrap(); |
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🟡 Suggestion: Keep the deep-tree fixture within platform path limits
One thousand one-character directory components still produce a path longer than 2,000 bytes, exceeding macOS's supported path length. The focused test at this exact head failed during create_dir_all with OS error 63, "File name too long", before delete_tree was exercised. Choose a depth within the platform's path budget, including the temporary-directory prefix and leaf filename, so the test validates iterative deletion rather than failing while constructing its fixture.
source: gpt-6.1-sol (phase2-reviewer: rust-quality)
| let latest_trusted = now.checked_add(FUTURE_TOLERANCE); | ||
| let by_time = eligible() | ||
| .max_by_key(|(_, backup)| { | ||
| let trusted = latest_trusted.is_none_or(|latest| backup.created <= latest); | ||
| (trusted, backup.created, &backup.path) |
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🟡 Suggestion: Align the future-date retention contract with the 24-hour tolerance
The implementation deliberately trusts creation times up to 24 hours after now, and floor_resists_clock_skew explicitly tests that a copy one minute in the future wins the time floor. However, upgrade-notes.md and the PR description promise that a future-dated copy cannot displace a past copy until its date arrives. For legacy backups, which have no migration-sequence floor, the current behavior can delete an expired past recovery copy while retaining the future-dated one. Either use now as the trust boundary or document the intentional 24-hour exception consistently; the existing test demonstrates that this is a contract mismatch, not an untested accident.
source: gpt-6.1-sol (phase2-reviewer: general, rust-quality)
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Summary
Wallet storage upgrades keep recoverable snapshots, give safe recovery guidance when old data cannot be opened, and expire old upgrade backups on a user-controlled schedule. Every on-disk file deletion in the app now goes through one guarded chokepoint.
User story
As a wallet owner, I want upgrades to keep my recovery options, old backups to be cleaned up on a schedule I control, and a guarantee that cleanup never touches my live wallet data.
Scenario
det-app.sqlite, every network's wallet database, and legacydata.dbbackups. The newest complete backup of each database is always kept (checked from the SQLite header, never by opening it); unreadable copies are never deleted automatically. A copy dated in the future by a fast clock is not treated as newest until that date arrives.det-app.sqlitestay under retention.Detailed discussion
.pendingfiles and snapshots byte-identical to a newer one of the same migration; legacydata.dbbackups are written durably (temp file, fsync, no-clobber rename) and abandoned temp copies older than a day are swept, so repeated failed opens cannot pile up copies and Keep forever keeps every distinct snapshot.src/utils/file_deletion.rs::delete_file/delete_treeis the single deletion path. Each call names aDeletionIntent(Backup, NetworkClear, Log). Checks: regular file (symlinks are unlinked only under NetworkClear, never followed); a deny-list of live databases, the secrets vault,.envand.premigrationfiles (by name and, on Unix, by device/inode);nlink == 1; exact backup-name allow-list and directory scope per intent. On Windows, names that could alias another file are refused.clippy.tomldisallows directremove_file/remove_dir*calls; the few exceptions carry a reasoned#[expect].flockheld by a just-released guard can briefly look held while another thread forks a child.Validation
.., symlink, symlinked-directory, hard-link, scope and deep-tree cases.now100 years ahead, and concurrent prunes. Mutating the age and newest-backup logic makes these tests fail.platform_compatibilitymodule passes 10/10 runs at 16 threads.cargo clippy --all-features --all-targets -- -D warningspass locally; full CI runs on this PR..envwere unchanged.🤖 Generated with Claude Code
Summary by CodeRabbit
New Features
Bug Fixes
Documentation
PR Hygiene ·
681ddacAGENTS.md,CHANGELOG.md,clippy.tomland 38 more) — lklimekWhen every box is checked the
PR Hygienecheck passes and this can merge.