Conversion:
* Updated the OSS dictionary [975d7d6]
* Updated Zip code data as of 2026-04-03 [3e72fb3]
* Added the circled zero (⓪) to number conversion candidates (#1520) [b18e5de]
* Updated words for font names (#1449) [335c3c9]
* Removed trailing space after small final sigma symbol (#1450) [5154bd8]
* Android: Improved the word prediction feature [40dc336, c692321, cb87ab5]
* Android: Improted the user history prediction feature [7684d80, 3350a19, a8f29ae, c5dd76f]
Features:
* Added support for mathematical functions (sin, cos, etc.) in the calculator rewriter [27710f2]
* Added text sanitizer against ill-formed UTF-8 and ASCII control characters [fa11e0a, 61bdcfc]
* Windows: Supported DPI change in candidate/infolist window (#1481) [fafbde9]
Bug fix:
* Android: Fixed ClearHistory failing to delete candidates with leading spaces [a8f245e]
* Emacs: Fixed candidate overlay collapse when tab-line is enabled (#1507) [0c8acf4]
* Emacs: Fixed backward compatibility for candidate window display in mozc.el (#1427) [891e324]
* macOS: Fixed a failure of application launch [34c3187]
* macOS: Correctly set RGB values for footer border color [0b71173]
Code:
* Removed Singleton class usages (#1461, #1463, #1464, #1465, #1475, #1477, #1478, #1479, #1480, #1490, #1491, #1497, #1498, #1499, #1502, #1509, #1510, #1513, #1514, #1515, #1523)
* Avoided unnecessary string-resizes by using absl::StringResizeAndOverwrite (#1524, #1525) [ff20a11, 6fce2f3]
* Replaced const std::string& with absl::string_view across multiple modules [988fbca, a801e2f, edc7cd0, 99aa820, 8c82922, 7e648b2]
* Refactored candidate view design and renderer styling using RendererStyle and renderer_style.textproto [751df90, be6dd36, 67cede2, afbf1d0]
* Refactored FlatConcurrentCache memory footprint and insert API [c891133, 3a4130b]
* Refactored UserPos cost mapping to generate kPosTypeStringTable dynamically from user_pos.def [53de4e4, 8c190e5, a20e4c1, 70fdb7f]
* Decoupled ImmutableConverter and DictionaryInterface from ConversionRequest and extracted Options [2ee4da3, 6ba80c7, b30921c]
* Refactored ConfigDialog UI layouts and frame mechanisms [4638ce6, c79a760, 895652c, 3c327d8]
* Removed Lemon-based parser for CalculatorRewriter [cb95326, e96c1ba]
* Removed Breakpad integration [1078e63]
* Removed unused ServerLauncher::set_server_program (#1466) [a524a88]
* Removed --timeout/--restricted from renderer (#1494) [be0eb82]
* Removed an optional optimization for uniprocessor (#1501) [5381793]
* Removed zstring_view [61068fe]
* Fixed name shadowing in QtIpcServer constructor (#1486) [8cb8458]
* Used unique service names in renderer_server_test (#1433) [858f8c0]
* Made RendererStyleHandler platform-neutral (#1474) [e4cb300]
* Applied standard code formatter to mac/ and unix/ directories [3024194]
* Linux: Made the default Qt path relative to the workspace root [5d46097]
* Linux: Removed generation of IBus engine XML and moved IBus config textproto to a dedicated file [2c84656, fb22406, dacc0a4]
* macOS: Consolidated ios and macos selections into apple in mozc_select [96c86c0]
* macOS: Made MacStatsConfigUtilImpl stateless (#1496) [5fc301c]
* Windows: Simplified GetDPIScalingFactor for Windows (#1467) [04a1ed3]
* Windows: Always used "en-US" in HResult::ToString() (#1476) [7c1f61c]
* Windows: Fixed MSVC extension warnings in WinAPITestHelper (#1492) [8cb5cc3]
* Windows: Defined NO_SHLWAPI_STRFCNS to not define StrCat (#1508) [fdfcc30]
* Windows: Always evaluate ServerLauncher::server_program() (#1473) [45c33ae]
Build:
* Updated Bazel version to 9.0.2 [3ced4c8]
* Removed git submodules [32be060, 48bbbf7, efaae55]
* Moved src/data/version/mozc_version_template.bzl to src/version.bzl [68d04b2]
* Made //engine:data_loader_test deterministic (#1522) [9afbd98]
* Worked around QTBUG-145239 with a local patch (#1506) [9df9774]
* Removed redundant build options from instructions (#1489) [180ef9f]
* Android: Separated android_util into its own dedicated build target [060b96e]
* Bazel: Made build rules compatible with Bazel 8.6 / 9.0 and updated external dependencies (#1451, #1453, #1454) [6c19ff0, 7cad196, 684c1d4, 979a650]
* Windows: Allowed building Mozc with Visual Studio 2026 (#1495) [b940437]
* Windows: Updated minimum Windows version to 1809 (build 17763) [3792d79]
* Windows: Always used CustomAction to register COM DLLs (#1500) [82dca34]
* Windows: Introduced mozc_win32_resource alias and universal MSI installer build support (#1434) [ecf3825, bab1403, 96bab12]
* Windows: Used ARM64-native Ninja and LLVM binaries (#1382, #1460) [67e9d9e, 430ac03]
* Registered Mozc Starlark macros with build_cleaner [e3e467e]
