Improve DevTools inspection, tracing, and cache diagnostics

[KidkArolis]

Summary

• reset collected DevTools state when the inspected page reloads, retain bounded realtime event history, and surface Feathers socket connection lifecycle events
• improve query inspection with selectable query data, alphabetical ordering, skipped-query filtering, richer timeline rows, and resizable columns
• correlate realtime, reconnect, reconciliation, retry, follow-up, fetch, and cache-update activity into navigable causal traces
• explain whether each query merges locally, reconciles uncertain state, or remains manual, including the classification reasons
• add a normalized entity/cache inspector with query memberships and last-change provenance
• support explicit in-memory JSON edits with ID validation and one-step undo; edits update React and relational views without writing to the server or triggering reconciliation

Verification

• npm run test (349 tests)
• npm run devtools:check
• rebuilt Chrome and Firefox extension artifacts