ae0b23df3f
Add per-agent sprint handoff docs (Sonnet/Codex/opencode) mapping the 1-week sprint's two goals to concrete Vikunja tasks. Kept in repo root (docs/ is gitignored). Includes hanging Lsp4jDiagnosticsRunner change + its live-proof test. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Rdo9fe7SujNVeyZA8YkpkD