Tracing functions

NO GREPPING FOR CALL SITES. The graph resolves dispatch; grep resolves text.

Announce: "Using tracedecay:tracing-functions to trace ."

Workflow

Question	Call
Resolve name → node ID first	tracedecay_find_exact_symbol / tracedecay_search (ladder: tracedecay:exploring-code)
Who calls X	tracedecay_callers (max_depth 1–2 first; widen only if unclear)
Many symbols at once	tracedecay_callers_for (node_ids[], one round-trip)
What X calls	tracedecay_callees (resolves trait dispatch; note dispatch_via_trait: true)
Path from A to B	tracedecay_call_chain (from_id, to_id, max_depth)
Every implementor / every body of a method	tracedecay_implementations
Every reference (rename prep)	tracedecay_rename_preview (preview only — nothing renames)
Cycles / hubs	tracedecay_recursion / tracedecay_hotspots / tracedecay_rank

Rules

• Read-only and parallel-safe. Keep depth small first; widen deliberately.
• Truncated with a handle? Narrow depth/target set; tracedecay_retrieve only when the omitted chain is needed.
• Rename is the goal → hand the preview to tracedecay:editing-safely. "What breaks / which tests" → tracedecay:assessing-impact.
• For several independent symbols, scoped read-only subagents (one symbol or direction each, cited node ids); the parent owns the final trace.

If tools are deferred or MCP fails

• Deferred: one ToolSearch call — select:tracedecay_callers,tracedecay_callees,tracedecay_call_chain,tracedecay_find_exact_symbol,tracedecay_rename_preview.
• MCP error: tracedecay tool callers --node-id … etc. (see tracedecay:using-the-cli). Never fall back to grepping call sites.

Deliverable

Do not end without: the caller/callee tree or resolved path with dispatch targets noted, and node IDs for any follow-up skill. Report any tracedecay_metrics: line.