Add BunPress guide and pre-E2E quality gates

• 24ab485c0b docs: replace framework manual with LogHQ guide glennmichael123 review this step
• 2e796440ce ci: validate application and documentation builds glennmichael123 review this step
• 138ba99941 test: harden archived log correlation and alerts glennmichael123 review this step
• d1aba3e99b test: add deterministic product state fixtures glennmichael123 review this step
• 2ac86441fe test: add static accessibility contracts glennmichael123 review this step
• 8438ade47d test(ui): validate SSR visual contracts glennmichael123 review this step
• 869ee2300a ci: harden production release validation glennmichael123 review this step
• f4a84301e4 test(sdk): pin ingest wire compatibility glennmichael123 review this step
• 9824fc5d5a fix(ci): update labeler v6 configuration glennmichael123 review this step