Make progress towards History Graph View

[guerler]

Now that #20935 is merged, the foundational tool request infrastructure is available. This issue tracks the implementation of a canonical History Graph API endpoint derived from tool requests.

The goal is to provide a single request endpoint that returns a structured lineage representation for a history. This endpoint will serve as the canonical data source for lineage-related views and higher-level tooling.

Scope

• Derive lineage from tool requests
• Aggregate jobs, input datasets, and output datasets
• Return a normalized graph structure with nodes and edges
• Ensure deterministic ordering and stable identifiers
• Support full history traversal without client-side API traversal

Dependencies

• Tool form submission must consistently populate tool requests with complete input state
• Convert workflow extraction interface to Vue #17506
• Convert FormDisplay to Composition API #21775
• Migrate tool execution request from api/tools to api/jobs #21842
• History Graph API #21932

Related Work

• Add Polaris Dataset Lineage Visualization #21607
  Initial lineage visualization prototype. Work was paused in favor of implementing lineage traversal as core API infrastructure.