April 2026 monthly summary for wavetermdev/waveterm focusing on clipboard UX improvements and cross-file consistency. Delivered a new Terminal Trim Trailing Whitespace setting to sanitize clipboard content and reduce pasted-noise across common targets. The feature is enabled by default and can be disabled to restore previous behavior. Key changes include the implementation of per-line trailing whitespace trimming for all clipboard copy paths and the exclusion of OSC 52 copies. This resolves long-standing issues where copied terminal text included trailing spaces, especially when pasting into Slack, editors, or other tools. Impact: cleaner clipboard data, improved paste quality, and a more predictable copy experience across copy-on-select, Ctrl+Shift+C, and right-click Copy paths. Aligns UI/config surface with user expectations and reduces post-paste formatting issues. Technologies/skills demonstrated: Go-based settings backend (new TermTrimTrailingWhitespace field, default config), TypeScript frontend changes (termutil.ts, termwrap.ts, term-model.ts) and generated artifacts (metaconsts.go, gotypes.d.ts, schema/settings.json). Demonstrated end-to-end feature work from backend config through frontend behavior, with cross-file impact and generated artifacts. Top-level outcome: improved user experience, reduced support friction due to clipboard formatting, and a cleaner, more maintainable copy feature across the terminal.