feat(web): refine session defaults and chat affordances #6289

Job	Run time
Build Impact	15s
Shell Deploy Scripts	12s
Frontend Build	2m 42s
Rust Build Check (macos-15)	2m 52s
CLI Tests (macos-15)	2m 39s
Rust Build Check (windows-latest)	2m 42s
CLI Tests (ubuntu-latest)	2m 50s
Rust Build Check (ubuntu-latest)	2m 53s
CLI Tests (windows-latest)	2m 42s
Impact-selected Linux / Relay Contract	-1s
DSH Profile Packaging (windows-latest)	-1s
Rust / CLI Validation	6s
	19m 51s

Navigation Menu