Phase C of the sendunitsComplete() refactor (issue #155).
- handlePrisoners(): extracts the ~100-line block that releases troops
trapped in the defender's traps during a conquest attack (type 3),
sends them home with 25% casualties, repairs destroyed traps, and
returns the HTML fragment for the battle-report trap line.
- buildCombatReport(): extracts the assembly of the $data2 (main report)
and $data_fail (all-attacker-dead fallback) CSV strings, including the
"village destroyed" annotation in $info_cat and the final appending of
$info_trap / $info_troop / $info_hero.
Pure behaviour-preserving extractions — no logic change.
Validated by deterministic A/B harness (infantry, evasion, conquest).
Co-Authored-By: Claude Sonnet 4.6 <[email protected]>