panel time ranges, dashboard override and geo map viewport

[Polliog]

Implements #305 and fixes #304 (refs only, issues stay open until release per convention).

Per-panel time ranges + dashboard override (#305)

• One shared preset catalog (PANEL_TIME_RANGES, 15m to 30d, 10 presets) in @logtide/shared, applied to every window-scoped panel: time_series, top_n_table, geo_map (interval), log_table, metric_chart, metric_stat, trace_latency, trace_volume, detection_events, activity_overview (timeRange). Strict superset of every previous enum: stored dashboards and YAML imports keep validating, no schema_version bump.
• Field names interval/timeRange are kept as-is (a rename would force a document migration for zero gain); the UI aligns instead: every config form now labels the control "Time range" with human-readable labels ("Last 48 hours").
• Dashboard-level time override: a Clock select in the dashboard toolbar temporarily overrides every window-scoped panel (batch body timeRange, applied via applyTimeRangeOverride). It is ephemeral view state like panel pause: never persisted, cleared on dashboard switch; live log tables and windowless panels are untouched. Manual per-panel refresh carries the active override.

Pre-existing window bugs fixed along the way

• time_series ignored its configured interval (always last 24h via getTimeseries) AND its service filter. The fetcher is now windowed with adaptive bucketing (1m/5m/15m/1h/1d), a Timescale cagg fast path with bucket-aligned raw-tail backfill for 1h/1d buckets, reservoir.aggregate elsewhere, zero-filled buckets, and date-aware axis labels on multi-day ranges.
• top_n_table service dimension ignored its interval (always last 7d via the daily cagg). The cagg fast path now serves only 7d && !showLastSeen; everything else goes through windowed reservoir.topValues, which also brings the Last seen column to the service dimension.

Geo map viewport (#304)

• The panel no longer destroys and rebuilds the Leaflet map on every poll: one persistent map, bubbles swapped in a LayerGroup. Auto-fit runs only on first paint, when the panel's query-shaping config changes, or via the new "Fit data" control; background refreshes never move the viewport.
• Wheel over the panel now scrolls the dashboard instead of zooming the map (zoom stays on the +/- controls, double click and pinch), so scrolling past the panel cannot silently reset the framing.
• Leaflet pane z-indexes (400-1000) painted over open dialogs (z-50); the map canvas is now an isolated stacking context. Pre-existing since 1.3.0.
• ResizeObserver keeps the map sized on panel resize (the old rebuild-per-poll masked this).

Verification

• Backend full suite: 278 files / 5000 tests green. Shared: 203. Frontend: 167, svelte-check at the pre-existing baseline.
• Real-browser smoke on a seeded dev stack: viewport fingerprint (pane transform + viewBox + path hash) byte-identical across panel refresh and across a 30d override refresh; override totals 50 -> 65 -> 83 logs for 24h/48h/30d on data seeded across five age bands; zero console errors.

[codecov]

Codecov Report

❌ Patch coverage is 99.02439% with 2 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...rc/modules/custom-dashboards/panel-data-service.ts	98.83%	2 Missing ⚠️

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