feat: Claude Code Monitor — lanes, pipelines and a merged workspace
Internal SmartGift build of a Claude Code monitoring dashboard. Lanes: a durable unit of parallel agent work, one per working directory, tracked across session restarts. Managed lanes are git worktrees the dashboard provisions and can reset or remove behind a three-check destroy guard and a counted preflight; adopted lanes are directories you already own and are never destroyable. Pipelines: a lane moves through pipeline stages. A stage the agent declares with evidence renders green; a stage inferred from the tool-event stream renders dashed amber and never counts as done. Detection is forward-only within a 30-minute window, and never writes the declared stage. Workspace: one page at /run with a lane grid, the selected lane's pipeline, and a full Claude console behind a disclosure.
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/**
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* @file scoped-stats.js
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* @description Source-scoped variants of the dashboard's aggregate queries
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* (stats + analytics). When the user restricts the "data scope" to a subset of
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* machines (see server/lib/source-filter.js), the routes call these instead of
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* the cached prepared statements in db.js so EVERY headline number — session /
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* agent / event counts, token totals, cost, daily charts, tool + type
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* distributions — reflects only the chosen sources.
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*
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* These build SQL dynamically (per request) and are used ONLY on the filtered
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* path; the unfiltered default keeps using db.js's prepared statements, so the
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* common zero-config case pays nothing for this feature.
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*
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* Every function takes a non-empty `sources` string array. The predicate is
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* either `source IN (...)` (queries over `sessions`) or a `session_id IN
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* (SELECT id FROM sessions WHERE source IN (...))` subquery (queries over
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* events / agents / token_usage), always via bound parameters.
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*
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* @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
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*/
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/** `?,?,…` for N sources. */
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function ph(sources) {
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return sources.map(() => "?").join(",");
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}
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/** Subquery restricting a `session_id` column to the chosen sources. */
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function sessionSubquery(sources) {
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return `SELECT id FROM sessions WHERE source IN (${ph(sources)})`;
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}
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function statsOverview(db, sources) {
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const sq = sessionSubquery(sources);
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const p = ph(sources);
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const row = db
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.prepare(
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`SELECT
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(SELECT COUNT(*) FROM sessions WHERE source IN (${p})) as total_sessions,
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(SELECT COUNT(*) FROM sessions WHERE status = 'active' AND source IN (${p})) as active_sessions,
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(SELECT COUNT(*) FROM agents WHERE status IN ('working','waiting') AND session_id IN (${sq})) as active_agents,
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(SELECT COUNT(*) FROM agents WHERE session_id IN (${sq})) as total_agents,
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(SELECT COUNT(*) FROM events WHERE session_id IN (${sq})) as total_events`
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)
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.get(...sources, ...sources, ...sources, ...sources, ...sources);
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return row;
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}
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function agentStatusCounts(db, sources) {
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return db
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.prepare(
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`SELECT status, COUNT(*) as count FROM agents WHERE session_id IN (${sessionSubquery(
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sources
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)}) GROUP BY status`
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)
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.all(...sources);
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}
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function sessionStatusCounts(db, sources) {
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return db
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.prepare(
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`SELECT status, COUNT(*) as count FROM sessions WHERE source IN (${ph(sources)}) GROUP BY status`
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)
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.all(...sources);
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}
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function countEventsToday(db, sources, toLocal, toUTC) {
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return db
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.prepare(
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`SELECT COUNT(*) as count FROM events
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WHERE created_at >= datetime('now', ?, 'start of day', ?)
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AND session_id IN (${sessionSubquery(sources)})`
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)
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.get(toLocal, toUTC, ...sources);
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}
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function tokenTotals(db, sources) {
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return db
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.prepare(
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`SELECT
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COALESCE(SUM(input_tokens + baseline_input), 0) as total_input,
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COALESCE(SUM(output_tokens + baseline_output), 0) as total_output,
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COALESCE(SUM(cache_read_tokens + baseline_cache_read), 0) as total_cache_read,
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COALESCE(SUM(cache_write_tokens + baseline_cache_write), 0) as total_cache_write,
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COALESCE(SUM(cache_write_1h_tokens + baseline_cache_write_1h), 0) as total_cache_write_1h,
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COALESCE(SUM(web_search_requests + baseline_web_search), 0) as total_web_search,
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COALESCE(SUM(web_fetch_requests + baseline_web_fetch), 0) as total_web_fetch,
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COALESCE(SUM(code_execution_requests + baseline_code_execution), 0) as total_code_execution
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FROM token_usage WHERE session_id IN (${sessionSubquery(sources)})`
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)
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.get(...sources);
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}
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function toolUsageCounts(db, sources) {
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return db
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.prepare(
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`SELECT tool_name, COUNT(*) as count FROM events
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WHERE tool_name IS NOT NULL AND session_id IN (${sessionSubquery(sources)})
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GROUP BY tool_name ORDER BY count DESC LIMIT 20`
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)
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.all(...sources);
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}
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function dailyEventCounts(db, sources, tzModifier) {
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return db
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.prepare(
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`SELECT DATE(created_at, ?) as date, COUNT(*) as count FROM events
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WHERE created_at >= DATE('now', '-365 days') AND session_id IN (${sessionSubquery(sources)})
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GROUP BY 1 ORDER BY date ASC`
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)
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.all(tzModifier, ...sources);
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}
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function dailySessionCounts(db, sources, tzModifier) {
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return db
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.prepare(
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`SELECT DATE(started_at, ?) as date, COUNT(*) as count FROM sessions
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WHERE started_at >= DATE('now', '-365 days') AND source IN (${ph(sources)})
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GROUP BY 1 ORDER BY date ASC`
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)
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.all(tzModifier, ...sources);
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}
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function agentTypeDistribution(db, sources) {
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return db
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.prepare(
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`SELECT subagent_type, COUNT(*) as count FROM agents
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WHERE type = 'subagent' AND subagent_type IS NOT NULL AND session_id IN (${sessionSubquery(
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sources
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)})
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GROUP BY subagent_type ORDER BY count DESC`
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)
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.all(...sources);
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}
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function totalSubagentCount(db, sources) {
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return db
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.prepare(
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`SELECT COUNT(*) as count FROM agents WHERE type = 'subagent' AND session_id IN (${sessionSubquery(
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sources
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)})`
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)
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.get(...sources);
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}
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function eventTypeCounts(db, sources) {
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return db
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.prepare(
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`SELECT event_type, COUNT(*) as count FROM events
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WHERE session_id IN (${sessionSubquery(sources)})
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GROUP BY event_type ORDER BY count DESC`
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)
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.all(...sources);
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}
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function avgEventsPerSession(db, sources) {
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const sq = sessionSubquery(sources);
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return db
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.prepare(
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`SELECT ROUND(CAST(COUNT(*) AS REAL) /
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MAX(1, (SELECT COUNT(*) FROM sessions WHERE source IN (${ph(sources)}))), 1) as avg
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FROM events WHERE session_id IN (${sq})`
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)
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.get(...sources, ...sources);
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}
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/** token_usage rows joined to their session start date, scoped to sources. */
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function scopedTokenUsageWithDate(db, sources) {
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return db
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.prepare(
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`SELECT tu.*, DATE(s.started_at) as date
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FROM token_usage tu JOIN sessions s ON s.id = tu.session_id
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WHERE s.source IN (${ph(sources)})`
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)
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.all(...sources);
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}
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module.exports = {
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statsOverview,
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agentStatusCounts,
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sessionStatusCounts,
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countEventsToday,
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tokenTotals,
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toolUsageCounts,
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dailyEventCounts,
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dailySessionCounts,
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agentTypeDistribution,
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totalSubagentCount,
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eventTypeCounts,
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avgEventsPerSession,
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scopedTokenUsageWithDate,
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};
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