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feat: add chat summary tab in the right sidebar and per-chat cost endpoint (#26649)

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Stacked on #26657 (the persisted whole-chat summary backend). Base
branch is `chat-summary-62j9`; review/merge that first.

Adds a reusable `ChatSummary` component.

The summary text is the persisted whole-chat summary (`chat.summary`)
introduced by #26657. It is generated asynchronously and may be `null`
until the first summary is produced, in which case the popover renders a
muted empty state. Live updates arrive via that PR's
`chat_summary_change` watch event, which is already merged into the chat
caches.

Cost is served by a new per-chat endpoint, `GET
/api/experimental/chats/{chat}/cost`, which rolls up assistant-message
cost across a chat's root and child (subagent) chats and is authorized
like the other `{chat}` routes (read on the chat, 404 otherwise).

Visual and interaction coverage lives in `ChatSummary.stories.tsx` and
`ChatSummaryPopover.stories.tsx` (including populated-summary,
empty-state, and cost-loading cases).

---------

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Jaayden Halko
2026-07-27 10:05:05 +01:00
committed by GitHub
co-authored by Cursor
parent 88c7304e0b
commit 6f2011af88
38 changed files with 1744 additions and 87 deletions
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coderd/database/queries/chats.sql
+42 -1
View File
@@ -2198,7 +2198,7 @@ SELECT
OR cm.cache_creation_tokens IS NOT NULL
OR cm.cache_read_tokens IS NOT NULL
)
)::bigint AS unpriced_message_count,
)::bigint AS unpriced_messages_having_usage_count,
COALESCE(SUM(cm.input_tokens), 0)::bigint AS total_input_tokens,
COALESCE(SUM(cm.output_tokens), 0)::bigint AS total_output_tokens,
COALESCE(SUM(cm.cache_read_tokens), 0)::bigint AS total_cache_read_tokens,
@@ -2295,6 +2295,47 @@ FROM chat_costs cc
LEFT JOIN chats rc ON rc.id = cc.root_chat_id
ORDER BY cc.total_cost_micros DESC;
-- name: GetChatModelUsageCostByChatID :one
-- Assistant-message cost rolled up over the requested chat's subtree: the
-- chat itself plus every descendant reachable through parent_chat_id. A
-- root chat therefore reports its whole tree, while a subagent chat
-- reports only its own spend plus any nested subagents it spawned.
WITH RECURSIVE target AS (
SELECT @chat_id::uuid AS chat_id
), subtree AS (
SELECT chat_id AS id FROM target
UNION ALL
SELECT c.id
FROM chats c
JOIN subtree s ON c.parent_chat_id = s.id
), costs AS (
SELECT
COALESCE(SUM(cm.total_cost_micros), 0)::bigint AS total_cost_micros,
COUNT(*) FILTER (
WHERE cm.total_cost_micros IS NOT NULL
)::bigint AS priced_message_count,
COUNT(*) FILTER (
WHERE cm.total_cost_micros IS NULL
AND (
cm.input_tokens IS NOT NULL
OR cm.output_tokens IS NOT NULL
OR cm.reasoning_tokens IS NOT NULL
OR cm.cache_creation_tokens IS NOT NULL
OR cm.cache_read_tokens IS NOT NULL
)
)::bigint AS unpriced_messages_having_usage_count
FROM chat_messages cm
JOIN subtree s ON s.id = cm.chat_id
WHERE cm.role = 'assistant'
)
SELECT
t.chat_id,
costs.total_cost_micros,
costs.priced_message_count,
costs.unpriced_messages_having_usage_count
FROM target t
CROSS JOIN costs;
-- name: GetChatCostPerUser :many
-- Deployment-wide per-user cost rollup within a date range.
-- Only counts assistant-role messages.