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TT_BREAK and TT_NEXT were already tokenised; this wires them up:
- _program(): guard statement loop with ct == CONTROL_NONE so a break/next
flag set inside a loop body stops block execution and propagates upward
- _control(): add TT_BREAK and TT_NEXT cases that set CONTROL_BREAK /
CONTROL_NEXT on p_interpret->ct and return immediately
- while/until loop: replace the commented-out switch with active if/else
logic that clears the flag and either stops iteration (break) or lets
the loop re-evaluate its condition (next)
Add examples/break_next.fy to exercise both keywords in while and until
loops; expected output: 5 / 12 / 7.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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