feat(webapp): improve adjacent runs navigation and timeline performance #3910

Job	Run time
e2e / 🧪 CLI v3 tests (windows-latest - pnpm)	4m 14s
typecheck / typecheck	5m 39s
units / packages / 🧪 Unit Tests: Packages (1, 1)	5m 5s
e2e / 🧪 CLI v3 tests (windows-latest - npm)	3m 29s
e2e / 🧪 CLI v3 tests (ubuntu-latest - npm)	1m 51s
e2e / 🧪 CLI v3 tests (ubuntu-latest - pnpm)	1m 50s
units / webapp / 🧪 Unit Tests: Webapp (5, 8)	6m 44s
units / webapp / 🧪 Unit Tests: Webapp (4, 8)	3m 33s
units / webapp / 🧪 Unit Tests: Webapp (1, 8)	6m 8s
units / webapp / 🧪 Unit Tests: Webapp (2, 8)	3m 46s
units / internal / 🧪 Unit Tests: Internal (2, 8)	4m 53s
units / webapp / 🧪 Unit Tests: Webapp (7, 8)	2m 8s
units / webapp / 🧪 Unit Tests: Webapp (8, 8)	2m 36s
units / internal / 🧪 Unit Tests: Internal (3, 8)	4m 31s
units / internal / 🧪 Unit Tests: Internal (7, 8)	4m 4s
units / webapp / 🧪 Unit Tests: Webapp (3, 8)	5m 35s
units / internal / 🧪 Unit Tests: Internal (4, 8)	4m 57s
units / internal / 🧪 Unit Tests: Internal (6, 8)	3m 25s
units / internal / 🧪 Unit Tests: Internal (1, 8)	5m 31s
units / internal / 🧪 Unit Tests: Internal (5, 8)	4m 27s
units / webapp / 🧪 Unit Tests: Webapp (6, 8)	5m 56s
units / internal / 🧪 Unit Tests: Internal (8, 8)	2m 39s
units / packages / 📊 Merge Reports	25s
units / internal / 📊 Merge Reports	21s
units / webapp / 📊 Merge Reports	44s
	1h 34m 31s

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