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fix(indexer): force build purges stale sessions instead of only clearing index_state

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The skill's `--build` (always a force build) cleared `index_state` and
re-indexed existing files, but never removed rows for transcripts that no
longer exist on disk, so deleted sessions accumulated forever (the dogfood
showed 328 indexed sessions vs 283 current files). A force build is meant to
be a clean rebuild, matching what the app already does.

Drop every derived table (messages, tool_calls, tool_results, sessions,
summaries, subagents, workflows, workflow_agents) in the force path, then
re-index from the current files. `memories` is the durable, human-approved
layer and is never cleared; messages_fts is repopulated by the existing
'rebuild' command in finalize.

Add a test that builds two sessions, deletes one transcript, force-rebuilds,
and asserts the stale session is purged while a seeded memory survives.
Verified the test is discriminating: without the fix it reports
['gone','keep'] instead of ['keep'].

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
tommy0103
2026-07-10 03:18:52 +08:00
co-authored by Claude Opus 4.8
parent 01a390fa10
commit c964653362
2 changed files with 42 additions and 1 deletions
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scripts/indexer.mjs
+8
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@@ -148,6 +148,14 @@ function buildIndex({ force = false } = {}) {
if (force) {
db.prepare("DELETE FROM index_state WHERE jsonl_path != '__last_build__'").run();
// Clearing index_state alone re-indexes existing files but leaves rows for
// files that no longer exist on disk (stale sessions accumulate). A force
// build is a clean rebuild: drop every derived table, then re-index from the
// current files. `memories` is the durable, human-approved layer and is never
// cleared; messages_fts is repopulated by the 'rebuild' command in finalize.
for (const table of ['messages', 'tool_calls', 'tool_results', 'sessions', 'summaries', 'subagents', 'workflows', 'workflow_agents']) {
db.prepare(`DELETE FROM ${table}`).run();
}
}
const files = [