Outline: tibco-apigee-migration-workbench Feasibility Analysis

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• The validation gap is the long pole: without a way to confirm behavioral equivalence, "migration done" is a confidence score, not a fact — the doc will name this bluntly and propose the least-bad options.

• Model routing is a cost-reduction lever, not just a performance choice — routing simple policies to lightweight models keeps the per-migration cost tractable at 600 APIs.

• Corpus cold start is a real bootstrapping problem: the first 20 migrations must be heavily human-reviewed not just for quality but to build the ground truth that later automation depends on.