chore: snapshot WIP previo + flow 0008 + 7 sub-issues (0112-0119)

Snapshot de WIP acumulado de sesiones previas antes de merge wave 1
del flow 0008 (kanban_cpp + agent_runner_api + DoD schema).

Incluye:
- dev/flows/0008-kanban-cpp-and-agent-workflows.md
- dev/issues/0112-0119*.md (7 sub-issues)
- WIP previo en cmd/fn/doctor.go, registry/*, modules/, cpp/, etc.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

cpp/functions/viz/kpi_card.h

@@ -10,9 +10,18 @@
 //   - Optional icon (Tabler glyph) + label (small, muted) on top row
 //   - Value (large font)
 //   - Delta badge (green TI_TRENDING_UP / red TI_TRENDING_DOWN)
-//   - Sparkline of history
+//   - Sparkline of history (auto Y by default; fixed Y in overload v1.4)
 
 void kpi_card(const char* label, float value, float delta_percent,
               const float* history = nullptr, int history_count = 0,
               const char* format = "%.1f",
               const char* icon = nullptr);
+
+// Fixed Y-scale variant (v1.4): el sparkline interno usa [y_min, y_max]
+// absolutos. Util para metricas con dominio conocido (CPU%/RAM% -> 0,100)
+// donde la comparacion visual entre cards exige misma escala.
+void kpi_card(const char* label, float value, float delta_percent,
+              const float* history, int history_count,
+              float y_min, float y_max,
+              const char* format = "%.1f",
+              const char* icon = nullptr);