fix: session store kind column + duplicate error handling

[Salazareo]

No description provided.

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	71.68% 🟰 ±0%	13696 / 19106
🔵	Statements	70.13% ⬇️ -0.01%	14470 / 20631
🔵	Functions	70.39% ⬆️ +0.01%	2259 / 3209
🔵	Branches	59.99% ⬇️ -0.02%	9301 / 15502

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
src/backend/clients/database/SqliteDatabaseClient.ts	47.05% 🟰 ±0%	30.3% 🟰 ±0%	24.13% 🟰 ±0%	47.32% 🟰 ±0%	113, 189, 214-217, 224, 244-246, 256-540, 551-554, 573
src/backend/stores/session/SessionStore.js	76.06% ⬇️ -0.43%	71.48% ⬇️ -1.43%	67.34% ⬆️ +0.68%	77.87% ⬇️ -0.20%	60, 69, 111, 223, 306, 384, 426-428, 478, 496-498, 535, 547-549, 589-640, 747, 753, 759, 812-813, 822, 829-846, 855-861, 864, 878, 883, 956

Generated in workflow #263 for commit 0a1d64f by the Vitest Coverage Report Action