feat: key wallet manager (step 2)

[QuantumExplorer]

Summary by CodeRabbit

• New Features

  • extensive work on key wallet manager and key wallet.

• Documentation

  • New guides for Unified SDK, wallet management, testing, terminal blocks, UTXO rollback, and project setup.

• Tests

  • Extensive unit, integration, performance, security, and C-based test suites.

• Chores

  • Expanded workspace members and dependency overrides; updated ignore rules.

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Walkthrough

Adds new crates dash-network, dash-network-ffi, dash-spv, and dash-spv-ffi to the workspace. Introduces extensive FFI layers (C/Swift via UniFFI and cbindgen), documentation, examples, tests, and utilities. Implements SPV features (bloom filters, chain tips/work, ChainLocks, terminal blocks). Updates repo docs, .gitignore, and root Cargo workspace/patch.

Changes

Cohort / File(s)	Change summary
Workspace & Patch Cargo.toml	Expands [workspace] members to include dash-network, dash-network-ffi, key-wallet*, dash-spv, dash-spv-ffi. Adds crates-io patch for blsful (git rev pin).
Repo Meta & Docs README.md, CLAUDE.md, UNIFIED_SDK.md, TEST_SUMMARY.md, TODOS.md, run_integration_tests.md, .gitignore	Documentation additions for SDK/FFI/unified iOS usage, testing, todos; README updates (wallet, MSRV 1.80, supported versions). Broad .gitignore expansion.
Dash Network Core dash-network/Cargo.toml, dash-network/README.md, dash-network/src/lib.rs	New crate providing Network enum, magic bytes, activation heights, Display/FromStr, optional serde/bincode.
Dash Network FFI (UniFFI) dash-network-ffi/* (Cargo.toml, build.rs, src/dash_network.udl, src/lib.rs, src/dash_network_ffi.swift, src/dash_network_ffiFFI.h, src/dash_network_ffiFFI.modulemap, uniffi-bindgen.rs, README.md)	New UniFFI-based bindings for Network/NetworkInfo with Swift/C headers, initialization, error bridging, and generation pipeline.
SPV Core Crate dash-spv/* (Cargo.toml, README.md, CLAUDE.md, docs/*, data/mainnet/mod.rs, data/testnet/mod.rs, examples/*, src/bloom/*, src/chain/chain_*, src/chain/chainlock_*)	New SPV library: bloom filter builder/manager/stats/utils+tests; chain tips/work; ChainLock manager+tests; terminal blocks data loaders; examples for sync/reorg/tests; docs for terminal blocks and UTXO rollback.
SPV FFI Crate (C ABI) dash-spv-ffi/* (Cargo.toml, build.rs, cbindgen.toml, include/dash_spv_ffi.h, README.md, src/{callbacks,client,config,error,lib,platform_integration,types,utils,wallet}.rs, tests/**, examples/basic_usage.c, tests/c_tests/*)	New FFI surface for SPV client: config, client lifecycle, sync, events, mempool, wallet types, errors, utilities; autogenerated C header; extensive Rust and C tests and Makefile.
Data/Test Artifacts block_with_pro_reg_tx.data	Appends hex-encoded serialized block containing ProRegTx.

Sequence Diagram(s)

sequenceDiagram
  participant CApp as C/Swift App
  participant FFI as dash-spv-ffi
  participant SPV as dash-spv Client
  participant Net as Network
  participant Store as Storage

  CApp->>FFI: client_new(config)
  FFI->>SPV: create Client (runtime)
  CApp->>FFI: client_start()
  FFI->>SPV: start()
  SPV->>Net: connect/handshake
  SPV->>Net: sync headers/filters/masternodes
  loop Sync progress
    SPV-->>FFI: progress/events
    FFI-->>CApp: callbacks (block/tx/balance)
  end
  CApp->>FFI: client_sync_to_tip()
  FFI->>SPV: sync_to_tip()
  SPV->>Store: persist state
  CApp->>FFI: client_stop()
  FFI->>SPV: stop()

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Estimated code review effort

🎯 5 (Critical) | ⏱️ ~90+ minutes

Possibly related PRs

• feat: dash-spv-ffi #76: Introduces dash-spv-ffi crate and FFI scaffolding similar to this PR’s SPV FFI additions.
• feat: initial implementation of SPV client in rust-dashcode #75: Establishes the dash-spv crate; this PR extends it with bloom, chain management, data, and examples.
• refactor: split key wallet #74: Adds dash-network and key-wallet crates/bindings; overlaps with this PR’s workspace expansion and FFI splits.

Suggested reviewers

• ogabrielides
• pankcuf
• PastaPastaPasta

Poem

A rabbit taps keys with a gentle thrum,
New crates sprout up—oh look how they’ve come!
SPV hops, FFI sings,
Network magic spreads its wings.
Blooming filters, ChainLocks tight—
We ship by moon and code by night. 🐇✨

✨ Finishing Touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feat/keywalletmanager2

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