fix(mine_report): only absorb multi-line continuations while brackets are unbalanced The multi-line parser fix (85cdded) absorbed ANY non-matching line after a finding, so a stray line following a COMPLETE finding (e.g. build chatter leaking to stdout) was folded into its message instead of counted — breaking mine_report's selftest ("expected 1 unparsed, got 0"), the lint-job failure on the last two pushes. Track the running bracket balance of the finding's message: a real multi-line lambda body leaves it unbalanced, a complete finding is balanced. Absorb continuation lines only while unbalanced; once balanced, a further non-matching line is stray drift again. Both selftests green (mine_report 8/8, oracle_compare 19/19); the multi-line ScreenToGif findings still parse and a trailing stray line is still counted.#29