fix(stats): source heatmap from session_cache instead of stats-cache.json - #7
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…json Claude's /stats command only counts parent JSONL files and rotates them off disk, making the heatmap blind to subagent sessions and older months. Switch to an in-DB aggregate (getDailyActivity) that covers everything Switchboard has indexed — parents and subagents alike. - db.js: add getDailyActivity() — GROUP BY date over session_cache - main.js: add get-stats-from-db IPC handler; rewrite refresh-stats to drop the /stats PTY spawn (now redundant); remove dead runClaude helper - preload.js: expose getStatsFromDb to renderer - public/stats-view.js: consume DB stats; update data-source notice text - test/db-daily-activity.test.js: 6 tests covering aggregation logic and stats-object shape (better-sqlite3 ABI incompatibility with plain node means the SQL path is covered via a pure-JS mirror of the query)
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Problem
The stats heatmap had a large hole between March and April 2026 and was mostly empty before February. Root cause:
claude /statsonly counts parent JSONL files, silently ignoring all subagent sessionsSolution
Source the heatmap directly from
session_cache(Switchboard's own SQLite DB), which already indexes every parent and subagent session and persists them independently of Claude's file rotation.DB counts by month:
All months are now fully visible in the heatmap.
Changes
db.js: addgetDailyActivity()—GROUP BY substr(modified,1,10)oversession_cachemain.js: addget-stats-from-dbIPC handler; rewriterefresh-statsto drop the slow/statsPTY spawn; remove deadrunClaudehelper (~90 lines)preload.js: exposegetStatsFromDbto rendererpublic/stats-view.js: consume DB stats; update data-source notice texttest/db-daily-activity.test.js: 6 tests covering aggregation logic and stats-object shapeTest plan
fetchAndTransformUsage, unchanged)npm testpasses (38/38)