# Latest Windows release

## v0.6.37 — 2026-11-04

## Changes
- Image clipboard history capture runs in KSwitcher.Screenshot.exe, so Windows clipboard image allocations are released when the helper exits. The configured size limit, privacy exclusions and original clipboard formats are preserved.
- Automatic and uncached manual history OCR run in the same helper executable, in a separate short-lived process. Only encrypted requests and recognized text cross the process boundary. Windows OCR and optional Tesseract remain supported; profile changes and shutdown cancel background work, and deleted entries are not recreated by late results.
- Consecutive duplicate detection uses SHA-256 fingerprints stored inside the encrypted index. Exact payloads, image representations and decoded pixels can be compared without loading the previous record. Old entries acquire fingerprints on first comparison; pins and cached OCR are preserved. This does not introduce global deduplication.
- Copying text after an image no longer loads the previous image just to rule out a duplicate. Settings, shortcuts and defaults are unchanged. Keep all three executables together.

## Validation
Staged build: dictionary equivalence for 140,939 words, 105 sync checks, wheel batching, 313 native checks, 559 input checks, screenshot UI/PNG/notification registration, 48 updater checks and updater progress UI. Windows OCR tests cover helper equivalence, cancellation, failure, encrypted temporary-file cleanup, persisted background search and unchanged clipboard. Optional Tesseract and clipboard-capture integration are also verified.

Three controlled OCR comparisons used the same image and settings: retained private working set in the isolated test process fell by about 0.8 MiB. Combined parent/helper peak RAM did not fall (about 55.6 versus 56.6 MiB); the large peak is now outside the resident process and disappears when the helper exits. A separate live screenshot test finished at 4.41 MiB private working set in the main application. These observations are not fixed memory limits or guarantees for another machine/workload.

## Upgrade
Choose **Update** in the tray menu. Legacy v0.3.0–v0.4.1 clients first receive the v0.4.2 compatibility bridge, then the current full release. v0.2.3 and earlier require manual installation.
For manual installation, exit KSwitcher, close screenshot editors and extract the entire ZIP into its installation folder. Keep personal `data/` and customized dictionaries.

Download **KSwitcher-win-x64.zip** with **SHA256SUMS.txt**. Keep all three executables together. The package contains no personal settings, credentials or clipboard history.

Publish stable `release-vX.Y.Z` tags matching the executable version. Keep `v0.4.2` as the last legacy tag.