feat(validation): introduce field validation timestamp

[lwih]

No description provided.

[tristanrobert]

✅ Snyk checks have passed. No issues have been found so far.

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✅	Open Source Security	0	0	0	0	0 issues

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[github-actions]

Coverage Report for frontend

Status	Category	Percentage	Covered / Total
🔵	Lines	65.14% (🎯 40%)	3095 / 4751
🔵	Statements	63.46% (🎯 40%)	3306 / 5209
🔵	Functions	55.11% (🎯 40%)	1066 / 1934
🔵	Branches	56.95% (🎯 40%)	1343 / 2358

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
frontend/src/v2/features/mission-target/components/ui/mission-target-title.tsx	100%	93.75%	100%	100%

Generated in workflow #4469 for commit 3e0a6dd by the Vitest Coverage Report Action