Pure mechanical cleanup of accumulated drift in files outside the
HLS-content-hash branch's main change set. No behavior change.
- `cargo fmt` on every previously-misformatted file
(`ai/insight_generator.rs`, `database/knowledge_dao.rs`,
`faces.rs`, `knowledge.rs`, `libraries.rs`).
- `cargo clippy --fix`:
- `needless_borrow`: `&library` → `library` in `handlers/image.rs`
(two sites in the photo-listing path).
- Manual clippy pass for warnings clippy emits but can't auto-apply:
- `field_reassign_with_default` in `database/reconcile.rs::run` —
consolidated into a struct-literal initializer.
- `needless_range_loop` in `database/knowledge_dao.rs::union_perceptual_tags`
— inner `for b in (a+1)..indices.len() { let ib = indices[b]; ... }`
becomes `for &ib in &indices[a + 1..] { ... }`.
- Doc-list indentation: continuation lines under nested bullets in
`database/mod.rs::get_memories_in_window` and
`database/knowledge_dao.rs::build_entity_graph` realigned to the
list-item content column.
Deliberately not touched (each deserves its own focused commit, with
testing, rather than getting bundled into a sweep):
- 4× `deprecated count_distinct` in `faces.rs` — diesel API migration
to `AggregateExpressionMethods::aggregate_distinct` may shift result
types; needs verification against the existing stats queries.
- `await_holding_lock` in `knowledge.rs:807` — `std::sync::Mutex` held
across `ollama.generate(...).await`. Genuine concurrency bug; fix
requires understanding the surrounding flow before just dropping
the guard.
- 2× `type_complexity` in `database/mod.rs` — cosmetic, would need a
`type` alias and corresponding callers updated.
- Dead `total_deleted` on `library_maintenance::GcStats` and
`file_scan::enumerate_indexable_files` — both are public surface
retained for future use; deletion is a separate decision.
All 707 tests still pass. Release build clean.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Branch B of the multi-library data-model rollout. tagged_photo and
photo_insights now follow the bytes (content_hash), not the path,
matching the policy pinned in CLAUDE.md "Multi-library data model".
Branch A's availability probe and EXIF scoping land first; this
branch builds on top.
Migration (2026-05-01-000000_hash_keyed_derived_data)
Adds nullable content_hash columns to tagged_photo and photo_insights,
with partial indexes on the non-null subset to keep the index small
during the transitional window. The migration backfills from
image_exif:
* tagged_photo joins on rel_path alone (no library_id available);
* photo_insights joins on (library_id, rel_path), unambiguous.
Rows whose image_exif hash isn't known yet stay null and the runtime
reconciliation pass populates them as the hash backlog drains.
Insert-time population
TagDao::tag_file looks up image_exif.content_hash by rel_path before
inserting; the hash is written into the new column.
InsightDao::store_insight does the same scoped to (library_id,
rel_path). Caller-supplied hash on InsertPhotoInsight wins; otherwise
the DAO does the lookup. Both paths fall back to None if the hash
isn't known yet — reconciliation backfills.
Reconciliation (database/reconcile.rs)
Three idempotent passes the watcher runs once per tick after the
per-library backfill loop:
1. tagged_photo NULL hashes → populate from image_exif by rel_path.
2. photo_insights NULL hashes → populate by (library_id, rel_path).
3. photo_insights scalar merge — when multiple is_current rows
share a content_hash, keep the earliest generated_at as
current; demote the rest. Demoted rows keep their data so
/insights/history is unaffected; only the "current" pointer
narrows to one per hash.
No filesystem dependency, so reconcile doesn't need the availability
gate; runs every tick. Logs once when something changed, debug
otherwise.
Tags are set-valued under the policy (union on read, already
DISTINCT in queries), so there is no analogous tag-collapse pass —
duplicate (tag_id, content_hash) rows across libraries are
harmless.
Read paths are unchanged in this branch — lookup_tags_batch's
existing rel_path-via-hash-sibling expansion still produces the
correct merge. A follow-up can simplify reads to use the new column
directly for performance.
Tests: 217 pass (212 pre-existing + 5 new in reconcile covering
NULL-fill, hash-not-yet-known no-op, library scoping on insights,
earliest-wins collapse, idempotency).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Cameron Cordes