feat!: Move graph_key to AIConfigTracker instantiation

[jsonbailey]

Summary

• Removes graph_key as an optional parameter from all LDAIConfigTracker tracking methods
• Adds graph_key as an optional parameter to LDAIConfigTracker.__init__() — set once at construction, included automatically in all emitted events
• agent_graph() now uses the internal __evaluate_agent() path when fetching node configs, passing the graph key so each node tracker is born with graph_key set
• Fixes a variable shadowing bug in agent_graph() where the comprehension variable key shadowed the outer key parameter

Breaking Change

graph_key has been removed from all LDAIConfigTracker tracking methods. Pass it to the constructor instead:

# Before
tracker.track_duration(500, graph_key="my-graph")

# After
tracker = LDAIConfigTracker(..., graph_key="my-graph")
tracker.track_duration(500)

Test plan

• All existing tracker tests updated to pass graph_key at construction
• New test: test_agent_graph_node_trackers_have_graph_key verifies node trackers carry the parent graph key
• Run full test suite in dev container

🤖 Generated with Claude Code

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Note

Medium Risk
This is a breaking API change that touches core telemetry emission paths for agent graphs across providers; mistakes could drop graphKey correlation or alter metrics payloads.

Overview
Breaking change: LDAIConfigTracker no longer accepts graph_key on individual track_* calls; graphKey is now set once via LDAIConfigTracker(..., graph_key=...) and automatically included in emitted config-level events.

Updates LangGraph and OpenAI agent-graph runners/callbacks to stop threading the graph tracker into per-node metric flushes/tool-call tracking, and changes LDAIClient.agent_graph() to instantiate node trackers with the parent graph key (also fixing a comprehension variable shadowing bug). Tests are updated accordingly and a new test asserts graph node trackers carry the graph key.

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