Version 5.9 - #76

- Import [Sphere 10 Pascal Framework](https://github.com/HermanSchoenfeld/PascalFramework) for caching, concurrency and scoped resources.
- Add per-key and bulk-fetch caching with expiration, invalidation, eviction and synchronized access.
- Add read/write locking with recursive writes, upgradeable reads, timeouts and automatic lock scopes.
- Add cleanup scopes, collection helpers, typed data sources and UTF-8 file text; standardize String APIs and document public types.

- Add Single/Auto/Manual paging with a compact mode button, accurate row counts and scroll resets.
- Reuse complete results when resizing and report completion once per fetched page.
- Add rounded-spoke loading cards, retain rows during updates and fix completion, cancellation, errors, parenting and empty selections.
- Keep wizard windows stationary, retain inputs and allow validation and completion retries.
- Keep generic refresh throttling independent and expose TThrottledEventMode at unit scope.

- Fetch account-key index ranges in one traversal and correct unsigned account-number and price comparisons.
- Handle empty binary values safely during serialization and cryptographic conversion.

- Publish structured progress and synchronization events; reproduce existing display and log messages in their consumers.
- Keep synchronization active through batch gaps and received-block processing; network-off stops new downloads while received work finishes.
- Allow concurrent mempool reads with a self-contained core read/write lock.
- Defer pending reconciliation during catch-up; retain valid indexes and bulk-build rejected-operation results.
- Add pending restore progress and cancellation, bulk marker cleanup and byte-identical buffered saving.
- Flush pending changes on shutdown and replace files atomically, preserving the previous package on I/O failure.
- Reconnect peers and recover safebox downloads after disconnection; log completed chunks at Info.
- Join network/download workers, drain termination callbacks during confirmed shutdown and preserve miner-job snapshots during replies.

- Restore classic wallet key filtering during synchronization and apply pending balances after reconciliation.
- Add cancellable account/history workers and join active filters before classic wallet shutdown.

- Complete send, purchase, sale, key-change and payload wizards with validated operations and explicit wallet unlock ownership.
- Add batch-change approval for skipped accounts, charge only changed accounts and offer custom fees with an optional single payer.
- Restore advanced operations and the RAW/multioperation workbench; merge missing signatures without bypassing validation.
- Use bounded, scrollable operation confirmation and result dialogs.
- Reuse mining keys during startup and selection; rotate only after a mined block when configured.
- Validate private/watch-only key import and backup restoration.

- Load startup data and resolve account keys on cancellable workers; publish selected totals and history bindings after completed queries.
- Refresh main-wallet selections immediately outside node synchronization; suspend grid queries throughout synchronization.
- Add account-index paging, cached history queries, cancellable wallet totals and a bounded account cache that survives safebox replacement.
- Limit Recent Operations to 2,016/8,640 blocks for 7/30 days; search all available history for Maximum and cancel obsolete selections.
- Use bounded visible-row snapshots and cancellable workers for Explorer filters, history, totals and type statistics; fix My Accounts/key filters.
- Restore account/block explorers, RPC tools, message history and language settings; add Block Explorer refresh/reset and click-only operation details.
- Share cached committed counts/timestamps between footer and synchronization view without data/status polling; marshal key notifications to the UI.
- Show dashes until totals first load; show Wallet Keys padlocks in every state.
- Align footer buttons, retain full icon height and correct unsigned key hashes and PASC balances.
- Anchor header/footer controls, preserve modeless focus and fix banner transparency and splash/synchronization flicker.
- Keep startup height fixed with horizontal resizing; restore normal constraints/maximization afterward and join startup/grid workers before shutdown.

- Build the experimental wallet with Delphi/VCL and Lazarus/FPC using paired form resources and conversion tools.
- Add Win32/Win64 Debug/Release targets with separate compiler outputs; keep the Delphi executable in src beside OpenSSL without build events.
- Embed application/tray icons and set application and wallet executable versions to 5.9.0.0.
- Update GNU gettext and regular-expression compatibility for Delphi.

- Document wallet features, Sphere 10 Pascal Framework and Delphi/Lazarus build and test commands.
- Add runners for unit and isolated native regression tests covering shared components, operations, classic wallet, synchronization, loading and shutdown.