feat: enhance debug interaction logs

[tu11aa]

Summary

• Richer logging: Added call type (read/write), duration tracking, decoded results, and detailed error capture to history entries
• Search & filter: Search by function name + filter chips (All/Read/Write/Success/Error) on the history pane
• Export & clear: Export filtered history as JSON or CSV, clear history per contract
• Improved modal: Shows call type badge, duration, gas used, decoded result section, collapsible error details, and copy-to-clipboard

Files changed

• services/store/history.ts — Extended HistoryEntry type with callType, decodedResult, gasUsed, duration, errorDetails
• ReadOnlyFunctionForm.tsx — Async read with duration tracking, decoded result capture, error handling
• WriteOnlyFunctionForm.tsx — Duration tracking, error details capture
• history/DebugHistory.tsx — Search bar, filter chips, export JSON/CSV, clear button, R/W badges
• history/HistoryModal.tsx — Richer detail display, copy entry as JSON

Test plan

• Trigger read calls and verify history logs with decoded result and duration
• Trigger write calls and verify history logs with tx hash and duration
• Trigger failing calls and verify error details are captured
• Test search filtering by function name
• Test filter chips (Read, Write, Success, Error) individually and combined
• Export as JSON and CSV, verify file contents
• Clear history and verify it resets
• Open modal and verify all new fields display correctly
• Click "Copy" in modal and verify JSON is copied to clipboard