Closes#1183
## Summary
- Adds `packetStore.hotStartupHours` config key (float64, default 0 =
disabled). When set, `Load()` loads only that many hours of data
synchronously, reducing startup time on large DBs. Background goroutine
fills the remaining `retentionHours` window in daily chunks after
startup completes.
- A background goroutine (`loadBackgroundChunks`) fills the remaining
`retentionHours` window in daily chunks after startup completes.
Analytics indexes are rebuilt once at the end.
- `QueryPackets` and `QueryGroupedPackets` check `oldestLoaded` and fall
back to `db.QueryPackets()` for any query whose `Since`/`Until` predates
the in-memory window — covering days 8–30 permanently (beyond
`retentionHours`) and the background-fill gap during startup.
- `/api/perf` gains `hotStartupHours`, `backgroundLoadComplete`, and
`backgroundLoadProgress` fields inside `packetStore` so operators can
monitor the fill.
### Drive-by fixes
- E2E: added `gotoPackets` navigation helper used across packet-related
tests
- E2E: rewrote stripe assertion to check per-row stripe parity rather
than a fragile computed-style comparison
- E2E: theme test updated to use `#/home` as the initial route (was
`#/`)
- `db.go`: removed the RFC3339→unix-timestamp subquery path in
`buildTransmissionWhere`; `t.first_seen` is now always compared directly
as a string for both RFC3339 and non-RFC3339 inputs
## Configuration
```json
"packetStore": {
"retentionHours": 168,
"hotStartupHours": 24
}
```
`hotStartupHours: 0` (default) preserves existing behavior exactly.
Recommended for large DBs to reduce startup time; set to 0 to disable
(loads full retentionHours at startup, legacy behavior).
## Test plan
- [x] `TestHotStartupConfig_Clamp` — clamping when `hotStartupHours >
retentionHours`
- [x] `TestHotStartupConfig_ZeroIsDisabled` — zero leaves feature
disabled
- [x] `TestHotStartup_LoadsOnlyHotWindow` — only hot-window packets in
memory after `Load()`
- [x] `TestHotStartup_DisabledWhenZero` — all retention packets loaded
when disabled
- [x] `TestHotStartup_loadChunk_AddsOlderData` — chunk merges correctly,
ASC order maintained
- [x] `TestHotStartup_BackgroundFillsToRetention` — background goroutine
fills to `retentionHours`
- [x] `TestHotStartup_ChunkErrorRecovery` — chunk SQL failure logged and
skipped, loop terminates
- [x] `TestHotStartup_SQLFallback_TriggeredForOldDate` — query before
`oldestLoaded` routes to SQL
- [x] `TestHotStartup_SQLFallback_NotTriggeredForRecentDate` — recent
query stays in-memory
- [x] `TestHotStartup_PerfStats` — new fields present in
`GetPerfStoreStats()` (backs the perf endpoint)
- [x] `TestHotStartup_PerfStoreHTTP` — HTTP-level: GET /api/perf returns
`hotStartupHours`, `backgroundLoadComplete`, `backgroundLoadProgress` in
`packetStore`
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---------
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-authored-by: openclaw-bot <bot@openclaw.local>
Co-authored-by: CoreScope Bot <bot@corescope.local>
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