feat: delete thin facade pass-throughs and break service→shim circular imports (RFC #20) #55

Job	Run time
Detect changed paths	6s
Lint — parser-core	52s
Security — bandit + safety	43s
Lint — parser-free	0s
Build Docker image (PR validation)	0s
Lint — workflow files	0s
Test parser-free	0s
CI Pass	3s
Test parser-core (Python ${{ matrix.python-version }})	-1s
Dispatch downstream CI (bankstatements)	-1s
	1m 42s

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