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fix: harden troop processing race conditions (#98) (#138)

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Emerson Freitas
2026-03-17 15:13:14 -03:00
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parent bf9e48d5cf
commit a7bdac8392
4 changed files with 62 additions and 22 deletions
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CHANGELOG.md
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@@ -6,6 +6,19 @@ Format inspired by Keep a Changelog and Semantic Versioning principles.
## [Unreleased]
### Fixed
- Troop duplication race-condition hardening for issue #98.
- `sendunitsComplete()` now uses atomic per-record movement claim (`proc = 1` only when current worker owns the row) before processing reinforcements.
- `returnunitsComplete()` now uses the same atomic claim flow for returning troops and canceled-settler returns.
- `sendSettlersComplete()` now claims movement rows atomically before processing settle/return outcomes.
### Security and Safety
- Added idempotent A2B request claiming in troop send flow to prevent duplicate processing from concurrent/replayed submissions.
- Introduced `claimA2b()` in database layer and consumed it in `sendTroops()` before any troop/resource mutation.
### Changed
- Movement completion status updates for the hardened flows are now claim-first (atomic) instead of late batch marking.
## [2026-03-14] - Stability, PHP 8, Docker and Installer Hardening
### Added