fix: bump rust-dashcore to c88264e7 for Android SPV file-lock fix

[QuantumExplorer]

Issue being fixed or feature implemented

Bumps the rust-dashcore pin so the workspace picks up the Android SPV file‑lock fix and two other dash-spv fixes that landed on dev since the current pin.

The headline motivation is dashpay/rust-dashcore#840: on target_os = "android", std::fs::File::try_lock() is a compile‑time Unsupported stub (Android isn't in std's flock cfg list), so dash-spv's lock‑file guard failed fatally and Core/SPV could never start in the Android SDK. rust-dashcore #841 makes the lock degrade gracefully; this bump brings it into the platform. Without it, the KotlinExampleApp (#3999) Core layer is dead on device.

What was done?

Updated the single shared rust-dashcorerev in the workspace [workspace.dependencies] (all 8 crates: dashcore, dash-spv, key-wallet, key-wallet-ffi, key-wallet-manager, dash-network, dash-network-seeds, dashcore-rpc) plus the matching Cargo.lock entries:

afcff1566c81abb0a9cf64b99b0ee675169fddfc → c88264e77f0af05c7a7f45efe72c87572e80a67a

dev is a clean fast‑forward (4 commits, 0 behind) over the old pin. The four commits pulled in:

• feat(wasm-dpp): DashPlatformProtocol tests #841fix(dash-spv): degrade gracefully when advisory file locking is unsupported (Android) — the fix this PR is for.
• chore(drive): temporary disable payout script #835fix(dash-spv): avoid filter sync getting stuck on the first new block after a restart.
• chore(sdk): add eslint #827fix(dash-spv): replaced TARGET_PEERS with already existing max_peers config field — internal to dash-spv; the platform references neither target_peers nor max_peers, so no call‑site changes were needed.
• fix(dashmate): testnet node fails to setup with funding key #838ci: automation fix (no code impact).

Cargo.lock moved only the rust-dashcore‑sourced crates to the new rev; 92 other dependencies are unchanged.

How Has This Been Tested?

• cargo check -p platform-wallet (the primary dash-spv consumer) against the new rev — green; it re-compiled dash-spv / key-wallet / dpp / drive / dash-sdk / platform-wallet against c88264e7 with no errors (Finished dev profile … in 1m00s). Confirms no API drift from the 4 upstream commits.
• No source changes; this is a dependency‑pin bump only. Full builds run in CI.

On the underlying fix: the Android failure this unblocks was reproduced and root‑caused on an API‑35 arm64 emulator against the old pin — starting Core sync threw SPV error: Write failed: Failed to acquire lock: try_lock() not supported, which is exactly the path rust-dashcore#841 makes non‑fatal. Re‑verifying Core SPV start on device with the new pin (rebuild the rs-unified-sdk-jni.so) is the natural follow‑up.

Breaking Changes

None. dash-spv/key-wallet are the client/SPV + wallet layer, not consensus code — this is not a consensus‑breaking change. No public API changes on the platform side (the dash-spv deltas are internal fixes; #827's config‑field rename is not referenced by this repo).

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated relevant unit/integration/functional/e2e tests
• I have added "!" to the title and described breaking changes in the corresponding section if my code contains any
• I have made corresponding changes to the documentation if needed

For repository code-owners and collaborators only

• I have assigned this pull request to a milestone

🤖 Generated with Claude Code

Summary by CodeRabbit

• Chores
  • Updated several workspace dependencies to a newer upstream revision, which may bring compatibility improvements and general maintenance updates.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 2922577a-0918-420d-bb79-0eb68d828d88

📥 Commits

Reviewing files that changed from the base of the PR and between 050bab1 and 7e71dda.

⛔ Files ignored due to path filters (1)

• Cargo.lock is excluded by !**/*.lock

📒 Files selected for processing (1)

• Cargo.toml

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📝 Walkthrough

Walkthrough

Updates the git revision pin for eight rust-dashcore workspace dependencies (dashcore, dash-network-seeds, dash-spv, key-wallet, key-wallet-ffi, key-wallet-manager, dash-network, dashcore-rpc) in Cargo.toml to a newer commit.

Changes

Dependency Revision Update

Layer / File(s)	Summary
Workspace dependency rev bump Cargo.toml	Eight rust-dashcore git dependencies updated from rev afcff1566c81abb0a9cf64b99b0ee675169fddfc to c88264e77f0af05c7a7f45efe72c87572e80a67a.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related PRs

• dashpay/platform#3757: Updates the same workspace rev values for the same set of rust-dashcore crates to a different revision.
• dashpay/platform#3973: Also bumps the same rust-dashcore workspace git-rev pins for the same crate set.
• dashpay/platform#3976: Another rust-dashcore workspace rev bump for the same dependencies, later superseded revision.

Suggested labels:ready for final review

Suggested reviewers:lklimek

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: bumping rust-dashcore to pick up the Android SPV file-lock fix.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/bump-rust-dashcore-android-spv

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[thepastaclaw]

✅ Review complete (commit 7e71dda)

[thepastaclaw]

Code Review

Source: reviewers = Claude Opus and Codex gpt-5.5 for general/ffi-engineer; verifier = Claude Opus; specialists = ffi-engineer.

Pure dependency-pin bump of workspace rust-dashcore crates from afcff156 to c88264e7. Both agents independently verified the four upstream commits are non-consensus SPV/wallet changes with no FFI or API surface impact on this repo. No findings to flag.