Minor Changes

• e31e5d8d: Offer dashboard tile alerts for Terraform import. clickhouse_clickstack_alert gained source = "tile" with dashboard_id/tile_id in provider 3.28.0, so the bulk export and the per-alert menu now include tile alerts instead of skipping every alert that is not a saved-search one. A file carrying a tile alert asks for >= 3.28.0 and explains the hand edit its generated config needs; an export without one still installs on 3.25.x. A tile alert is withheld when its tile has a blank or duplicated name — the provider's tile_ids map is keyed by tile name and omits those, so the alert could only be pinned to a literal id the next dashboard apply can re-mint — or when its dashboard is provisioned, since ProvisionDashboardsTask rewrites those tiles wholesale. Both decisions are made server-side, on the import manifest and on the alerts listing, because neither response carries a dashboard's sibling tile names.

• f007c37f: Add a context-aware getting-started checklist to the sidebar for recently-created teams. After the setup steps (connect ClickHouse, add data) complete, a second phase tracks product-usage milestones persisted per user on user.onboardingData: exploring data, building a dashboard, setting up an alert, and using the MCP server. Completion is recorded server-side so it counts from the UI, the external REST API v2, or an MCP tool; the card can be dismissed and reappears if a new task is added to the registry.

• 3876d6b9: Fill the metric name select from the table's primary index, so it populates almost immediately instead of waiting on an aggregation over the data. On a source reporting ~4,900 gauge metrics the first options appear in ~30ms rather than ~770ms, and they stream in progressively rather than arriving all at once. A small spinner replaces the dropdown chevron while more are still on the way.

  The picker now has two modes. Browsing streams MetricName out of the sparse primary index via the mergeTreeIndex table function — one row per granule mark instead of a full column scan. Because the index only records the value at each granule boundary, that list is a subset, weighted towards metrics that actually carry data (index-visible metrics have a median ~32k datapoints against ~14 for the rest). Typing switches to the exhaustive, relevance-ranked GROUP BY search, so any metric the index omitted is still reachable by name. The placeholder reads "Search metrics..." to invite that.

  Two details that matter in use: while the first search for a pattern is in flight the browse list is held and filtered client-side, so the options never blank out mid-keystroke; and the dropdown's render cap is raised to 500 to match the server-side page size, so a search that is not reported as truncated is fully renderable.

  Browsing falls back to the exhaustive listing when the index cannot be read at all — a server older than 24.2, a Distributed or non-MergeTree metric table, or a schema whose primary key omits MetricName — so no deployment loses the picker.

  Metadata gains streamDistinctIndexValues, an async generator generic over table and column, so any primary-key column (ServiceName, for instance) can be listed the same way. streamToAsyncIterator moves from packages/app's session code into common-utils beside the ClickHouse client, and a new useStreamingQuery hook accumulates an async iterable into a React Query cache entry, publishing partial results on a throttle.

• 972634d2: Report the whole alert condition in the {{sourceQuery}} webhook template variable. It read only a chart's top-level where, so an alert defined by a per-series aggCondition — a common shape — still rendered empty. The variable now reports every part of the condition the alert query actually applies: a chart's where plus the aggCondition of the series the alert reads, and a saved search's where plus its pinned filters. A chart's pinned filters are deliberately excluded, since a tile or inline alert does not apply them. The value is truncated at 2000 characters.

  Editing an alert off a between or outside comparator now clears the stored thresholdMax instead of leaving the old bound on the document, where it was also served by the alerts APIs and would advertise a range that no longer fires. Webhook templates already guarded against this on read.

  The webhook form's variable list and the API's fallback body template both derive from one list in common-utils, which buildWebhookTemplateVariables is typed against, so a variable cannot be added without appearing in both places. The "Send test" payload carries a sample value for every variable, so a body template can be checked before an alert fires.

  The documented guard for an optional number is now {{#unless (eq thresholdMax undefined)}} rather than {{#if thresholdMax}}, which treats a legitimate bound of 0 as absent.

Patch Changes

• 482d2cb0: feat: Paginate the alerts page

• 5311d63c: fix: give incident.io webhooks a body incident.io accepts

  An incident.io webhook saved without a body was sent the generic {"text": ...} payload, which has neither of the two fields incident.io requires, so every delivery was rejected and no alert was ever raised. It now gets an incident.io payload carrying a deduplication key that is stable across a firing and its resolve, so incident.io closes the alert it opened, plus the alert id, status, condition and evaluation window in metadata for routing. The webhook body editor and its list of template variables are also available when incident.io is the selected service, not only for Generic, so the payload can be tailored to an alert source's configured fields.

• 96ac6b1b: fix: disable per-part subcolumn size calculation on ClickHouse 26.3+

  ClickHouse 26.3 turned on allow_calculating_subcolumns_sizes_for_merge_tree_reading by default, which makes PREWHERE planning fetch per-part sizes for every map key a query references. On SharedMergeTree that is one S3 GET per (key × active part), it runs before any row is read, and max_execution_time does not interrupt it. Queries referencing many attribute keys — the LLM dashboard reads ~64 — could spend minutes in planning. Queries now send the setting as 0 when the server supports it.

• 84c67f4b: fix: show only the delivery time in an alert's notification duration

  The notification duration on an alert's evaluation list was timing everything an alert does once it decides to fire: building the message title and links, querying the log lines that go in the body, rendering the template, and then delivering it. That made the column read in seconds while the webhook underneath it answered in milliseconds — the column and its own per-target breakdown disagreed, and the figure was dominated by work that has nothing to do with how fast the notification target responded. It now times the delivery alone. Evaluations already recorded keep their old figure and will read high.

• cfacdbe5: feat: relative date ranges for dashboards can now be saved

• 806d242e: feat: page and filter GET /alerts server-side

• f7ae72c2: refactor: Extract PromQL functions, PromqlExpressionEditor, and ChartSeriesControls

• b1e48b99: fix: Quote column identifiers when opening row details

• 78a33ba4: feat: Allow configuring dashboard filters as required

• bef61fbc: feat: Scope tags endpoint by resource type

• b4840573: feat: Optionally apply the dashboard's filter selections to the tile editor preview