Add dashboard filters & drilldown + async chart job UX (Steps 5–6)

[rad1092]

Motivation

• Improve dashboard usability by making KPI/insight discovery faster with filters and drilldown so users can quickly inspect evidence behind insights.
• Support large/multi-file visualizations by introducing an asynchronous chart job workflow with polling and retry to avoid blocking the UI.
• Surface consistent user-facing errors and detailed technical details from the backend so the frontend can rely on a stable error contract.

Description

• Frontend: extended bitnet_tools/ui/index.html, bitnet_tools/ui/app.js, and bitnet_tools/ui/styles.css to add an intent input + intent action suggestions, dashboard filters (file/column/type), an insight list with clickable items, and a drilldown evidence panel that renders JSON evidence.
• Frontend: implemented structured insight extraction (buildStructuredInsights), filter rendering, insight list rendering, drilldown view, and mode/intent routing to wire quick/advanced flows.
• Async charts: added chart job controls in the multi-CSV panel (startChartsJob / retryChartsJob) with server submission to /api/charts/jobs, polling (pollChartJobOnce / startChartPolling), lifecycle status rendering, and automatic retry enablement on failure.
• Backend: added Handler._error_payload helper and updated GET/POST error responses to return { "error": <msg>, "error_detail": <detail> } for a stable client/server error shape.

Testing

• Ran unit tests with pytest -q and all tests passed (26 passed).
• Launched the UI with python -m bitnet_tools.cli ui --host 0.0.0.0 --port 8765 and ran a Playwright smoke script that exercised dashboard rendering, filters, drilldown, and chart-job UX, producing a screenshot at artifacts/ui-step5-6-dashboard-chartjob.png.
• Verified manual flows in the running UI: multi-analyze → render dashboard → filter/inspect insights → start/retry chart job polling behaved as expected in the smoke run.

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Exclude retry button from global busy-state toggling

toggleBusy(false) re-enables every target in its list, including retryChartsJobBtn, so the retry button becomes clickable after any completed request (analyze/run/multi/chart start), even when no chart job has failed. This overrides the explicit disabled = true set in startChartsJob/retryChartsJob and lets users trigger duplicate chart submissions while a previous job is still running or already succeeded.

Useful? React with 👍 / 👎.

[chatgpt-codex-connector]

Treat not_found chart-job status as terminal failure

The polling handler only stops on done or failed, but the backend can return status: "not_found" for missing jobs (e.g., after a server restart), so this path keeps polling forever and never reports a terminal error state. In that scenario the UI burns repeated requests and does not clearly recover unless the user manually intervenes.

Useful? React with 👍 / 👎.