Selects the scrape strategy by env: mock when E2E vars are set, live otherwise.
The live strategy owns the long-term token store at BANK_TOKENS_PATH.
Building it touches no file; a malformed override throws here, at startup,
rather than part-way through a scrape.
Selects the scrape strategy by env: mock when E2E vars are set, live otherwise.
The live strategy owns the long-term token store at
BANK_TOKENS_PATH. Building it touches no file; a malformed override throws here, at startup, rather than part-way through a scrape.