The application the design describes: Flask + SQLite, Plex for library data,
Tautulli for watch history, report-only.
Structure follows the design's seams. providers/ splits MediaProvider from
HistoryProvider, because on this network library data and watch data live on
different machines and Jellyfin later will have no Tautulli equivalent.
scoring.py implements the reclaim score twice - as a SQL expression for the
live grid (weights change on every slider drag, so storing it would mean
rewriting thousands of rows per drag) and in Python for CSV export and tests,
with a property test over 500 generated rows asserting the two agree.
rules.py compiles saved views to parameterized SQL through a field/operator
whitelist; nothing user-supplied is ever interpolated.
Three properties are enforced by test rather than asserted in prose:
- Ingest is idempotent. Three consecutive full scans leave every count and
every byte total unchanged. A scanner that double-counts produces a report
that looks plausible and is wrong.
- Keep marks survive Plex reassigning every rating key in the library. They
are keyed on content GUID, scoped per library so the Movies and 4K Movies
copies of the same film mark independently.
- Every config variable the app reads is declared in docker-compose.yml, so
a variable set in Portainer can never silently do nothing.
Also found and fixed while verifying against a fake Plex+Tautulli pair:
executescript() commits the pending transaction, so migrations needed their
BEGIN/COMMIT inside the script; replaceChildren() renders null as the literal
text "null"; a hash-only URL change does not reload the document, so deep
links needed a hashchange listener; and SQLite ROUND rounds half away from
zero where Python rounds half to even.
73 tests, no live server required.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GVbG48GAXfCZatcmX123Ra
Tautulli stays local-network-only, so nothing off the LAN can check this
design against real data. tools/probe.py closes that gap from the inside:
GET requests only, standard library only, credentials redacted from all
output including error messages.
It answers open questions 1-4 in one run — Tautulli's coverage horizon,
the finished/partial/abandoned split across real plays, whether successive
plays are being grouped, library shapes and sizes, multi-version items,
and path roots by size. It also runs the pms_identifier cross-check from
section 4.11.
tools/mockserver.py mocks both APIs so the probe is testable without a live
server. Verified against it: the happy path, Tautulli absent, Tautulli
unreachable, Tautulli erroring, Plex unreachable, and an identifier
mismatch. Credential redaction confirmed in every error path.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GVbG48GAXfCZatcmX123Ra
