sync: skills and tool contract overhaul from private repo

src/config/skills/calibration.md

@@ -0,0 +1,33 @@
+---
+name: Calibration
+description: "Run periodic check-ins to recalibrate goals, projects, preferences, and graph structure."
+when_to_use: "User asks for a check-in, reset, review, or strategic recalibration."
+when_not_to_use: "Single isolated question with no strategic update needed."
+success_criteria: "Graph reflects current reality: updated hubs, changed priorities, and explicit deltas."
+---
+
+# Calibration
+
+## Objective
+
+Re-anchor the graph to the user's current state.
+
+## Check-in Sequence
+
+1. Review major hub nodes and active project nodes.
+2. Ask what changed: goals, priorities, constraints, beliefs, preferences.
+3. Identify stale nodes and missing nodes.
+4. Propose precise updates: update existing vs create new.
+5. Apply changes with explicit rationale.
+
+## Write Guidance
+
+- Prefer updating existing nodes when continuity matters.
+- Create new nodes for genuine shifts in direction/identity/approach.
+- Add edges that explain evolution (old -> new).
+
+## Output
+
+- What changed
+- What was updated vs newly created
+- What should be reviewed next check-in