Extract Transaction Types to Constants

[alfieprojectsdev]

Extracted transaction types ('DISPENSE', 'RECEIVE', 'ADJUST') to constants in client/src/constants.ts to improve maintainability and prevent typos. Updated usage in schema, hooks, and components. Verified with linting, build, and frontend verification script.

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PR created automatically by Jules for task 14002782648844284191 started by @alfieprojectsdev

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