merge: dev/next-development into main

fix: reuse qlib cache when runtime is unavailable

merge: dev/next-development into main

feat: add equity technical charts and harden intraday data

fix: resolve RSS fetch timeout and add RSSHub frontend config

merge: dev/next-development into main

feat: persist development runserver logs

fix: add fetch fallback on equity detail page

fix: repair observer collaboration form

merge: dev/next-development into main

chore: ignore generated validation artifacts

chore: add latest validation reports

fix: harden security scan and playwright db cleanup

test: expand api edge coverage and guardrails

fix: tighten share visibility and architecture guardrails