feat: initial scaffold kanban_cpp v0.1.0

C++ ImGui kanban for steering LLM agents. Six panels (Board, Calendar, Dashboard, Agent runs, Worktrees, DoD inspector) wired to registry functions http_request, kpi_card, sparkline, agent_runs_timeline, dod_evidence_panel. Backend Go on :8403 (independent operations.db from kanban_web).
2026-05-18 18:46:09 +02:00
commit a76ec74338
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+-- Deadline opcional por card. Fecha RFC3339 (precision dia o instante).
+-- NULL = sin deadline (default). El frontend muestra countdown hasta la fecha.
+ALTER TABLE cards ADD COLUMN deadline TEXT;
+CREATE INDEX IF NOT EXISTS idx_cards_deadline ON cards(deadline) WHERE deadline IS NOT NULL;