RefinementService::run | end - {}

Completeness#

#	Plan Item	Status	Evidence
1	`run()` catch block (line 108): replace `JSON.stringify(error)` with `error instanceof Error ? error.message : JSON.stringify(error)`	PASS	`refinement-service.ts`: lines 108 in diff (hunk starting at line 105) show `JSON.stringify(error)` replaced with `error instanceof Error ? error.message : JSON.stringify(error)` in the `run()` catch block
2	`authenticate()` catch block (line 75): same replacement	PASS	`refinement-service.ts`: lines 75 in diff (hunk starting at line 72) show `JSON.stringify(error)` replaced with `error instanceof Error ? error.message : JSON.stringify(error)` in the `authenticate()` catch block

#	Criterion	Status	Evidence
1	`refinement-service.ts` line 108: `JSON.stringify(error)` changed to `error instanceof Error ? error.message : JSON.stringify(error)`	PASS	`applications/agents/packages/cupix-capture-refinement-agent/src/refinement-service.ts`: diff line 108 shows exact replacement from `-logger.error('RefinementService::run
2	`refinement-service.ts` line 75: same change applied	PASS	`applications/agents/packages/cupix-capture-refinement-agent/src/refinement-service.ts`: diff line 75 shows exact replacement from `-logger.error('RefinementService::authenticate
3	Existing logging format (`logger.error('RefinementService::run	end - %s', ...)`) preserved	PASS

No blocking issues found.

The fix is minimal and precisely scoped to the two catch blocks identified in the plan. No unnecessary code was added.
The error instanceof Error ? error.message : JSON.stringify(error) pattern is a standard defensive approach that handles both Error objects and non-Error throwables (e.g., strings, plain objects).
One minor consideration: error.stack would provide more diagnostic detail than error.message alone (includes message + stack trace). However, this is a non-blocking style preference and the plan explicitly specified error.message, so the implementation is correct as written.